Default.SFX Trojan CoinMiner Analysis

Updated 2 years ago

Checked by Malware Check

Default.SFX

Technical Analysis

File Name	Default.SFX
File Type	PE32+ executable (GUI) x86-64, for MS Windows
Scanner Version	1.0.182.174
Database Version	2024-07-18 22:00:28 UTC

⚠

Trojan.Win64.CoinMiner.cl

Malware family: CoinMiner

CoinMiner malware utilizes system resources including CPU and RAM for unauthorized cryptocurrency mining. It establishes persistence through startup integration and may use resource management techniques to avoid detection while mining currencies like Monero or Zcash.

N/A

Detection Rate

462,334

File Size (bytes)

2024-07-18

Analysis Date

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File Identification

Hash Type	Value	Action
MD5	979cadae9bfebeb9ccd8a27a9932603e
SHA1	d6f269a423556f42eb0a783c0933525b1b85860a
SHA256	2747374a962d0f297cdd831d26624c35b2191326eb370def14107b5c039bfdb8
SHA512	9b5e2f8080527d97643dfa35ca3f5f36b202f27b54b6d120615fea1a51d7487b373d749753a2c4c36a0e7cca6bc2012cfce3780d7814352ea978dcb90e1f7982
ImpHash	b1c5b1beabd90d9fdabd1df0779ea832

PE Analysis

Basic Information

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Icon	Hash: 8d9da329386d64d6b86a12bd2f986399 Fuzzy: 9043363bfee17e0d508057b9ae7189e9 dHash: 84b4b4d4c4ccccc0
Image Base	`0x140000000`
Entry Point	`0x140032ee0`
Compilation Time	2024-05-12 10:17:07
Checksum	0x00000000 (Actual: 0x0007906a)
OS Version	5.2
PEiD Signatures	`PE32+ executable (GUI) x86-64, for MS Windows`
PDB Path	`D:\Projects\WinRAR\sfx\build\sfxrar64\Release\sfxrar.pdb`
Digital Signature	The PE file does not contain a certificate table.
Imports	3 libraries KERNEL32, OLEAUT32, gdiplus
Exports	0 functions
Resources	28 Resources
Sections	8 Sections

PE Sections

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Name	Virtual Address	Virtual Size	Raw Size	Entropy	Characteristics	MD5
`.text`	`0x00001000`	288,622 bytes	288,768 bytes	6.47 (Normal)	`IMAGE_SCN_CNT_CODE\|IMAGE_SCN_MEM_EXECUTE\|IMAGE_SCN_MEM_READ`	`F06BB06E02377AE8B223122E53BE35C2`
`.rdata`	`0x00048000`	75,972 bytes	76,288 bytes	5.27 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`2DE06D4A6920A6911E64FF20000EA72F`
`.data`	`0x0005b000`	59,228 bytes	6,656 bytes	3.26 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE`	`0DBDB901A7D477980097E42E511A94FB`
`.pdata`	`0x0006a000`	12,396 bytes	12,800 bytes	5.50 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`B0CE0F057741AD2A4EF4717079FA34E9`
`.didat`	`0x0006e000`	864 bytes	1,024 bytes	3.05 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE`	`1FCC7B1D7A02443319F8FCC2BE4CA936`
`_RDATA`	`0x0006f000`	348 bytes	512 bytes	3.34 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`3F331EC50F09BA861BEAF955B33712D5`
`.rsrc`	`0x00070000`	58,208 bytes	58,368 bytes	6.60 (Compressed)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`ADA5628B9441C3D4F775B5C1BE0267EF`
`.reloc`	`0x0007f000`	2,416 bytes	2,560 bytes	5.34 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_DISCARDABLE\|IMAGE_SCN_MEM_READ`	`77A9DDFC47A5650D6EEBBCC823E39532`

Entropy Analysis Alert

1 section(s) with elevated entropy (≥6.5) - possible compression

Resource Analysis

▼

Total Resources: 28 (56,468 bytes)

Resource Type	Count	Total Size	Percentage
PNG	2	8,430 bytes	14.9%
RT_ICON	7	38,113 bytes	67.5%
RT_DIALOG	6	2,916 bytes	5.2%
RT_STRING	11	5,030 bytes	8.9%
RT_GROUP_ICON	1	104 bytes	0.2%
RT_MANIFEST	1	1,875 bytes	3.3%

Certificate Chain Analysis

▼

No Digital Signatures

This file is not digitally signed.

Security Implications:

Cannot verify the publisher's identity
Increased security risk when running this file
May trigger security warnings on some systems

⚠ This file either lacks a digital signature or the certificate chain could not be verified
Exercise caution when executing unsigned files from unknown sources

Certificate Verification Status

The PE file does not contain a certificate table.

Recommendation: Verify the file source and ensure it comes from a trusted publisher.

Trojan.Win64.CoinMiner.cl Removal

Gridinsoft has the capability to identify and eliminate Trojan.Win64.CoinMiner.cl without requiring further user intervention.

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Removal Instructions

Follow these steps to completely remove the threat from your system

1
Get Gridinsoft Anti-Malware — it's a quick 2 MB download that won't slow down your PC.
2
Run the installer gsam-en-install.exe. The setup takes about 2 minutes and doesn't require a restart.
3
The app launches right after installation. You'll see the main dashboard with the scan button front and center.
4
Hit "Standard Scan" — this checks all the spots where malware typically hides: temp folders, browser data, startup programs, and system directories.
5
Once the scan finds this threat, click "Clean Now". The removal usually happens instantly, though some stubborn infections may need a reboot.
6
If you see a restart prompt, go ahead and reboot. This clears any malware that was running in memory and ensures your system starts fresh.

Important: Before You Start

Quick tip: unplug from the internet before scanning. Some malware phones home for instructions or downloads extra payloads when it senses trouble. If the infection is severe, boot into Safe Mode first — it limits what can run and makes cleanup easier.

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