Updater.exe Trojan CoinMiner Analysis

Updated 2 years ago

Checked by Malware Check

updater.exe

Technical Analysis

File Name	updater.exe
File Type	PE32+ executable (GUI) x86-64, for MS Windows
Scanner Version	1.0.158.174
Database Version	2024-02-10 21:00:32 UTC

⚠

Trojan.Win64.CoinMiner.sa

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

5,326,104

File Size (bytes)

2024-02-10

Analysis Date

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File Identification

Hash Type	Value	Action
MD5	5f09926fd269ec484401e9efb86c3e26
SHA1	a13058eaecb1be56fac34e11a4d1ca346380699c
SHA256	e39e9317a4945f93217e92e47c3dc17a2424d0dd22c18cb2fe577ae3dd7fa252
SHA512	99a7e6ccb315e579b98bbad24f8630d475fee2c0b9c7612f7e94c4ab10688f3cf3bf6cc1aebc85b7f8ce0c14d4dc72108d2d7331b18d5b679e8daf15631f4aca
ImpHash	203d63d5d9a088e2d84cef737227986b

PE Analysis

Basic Information

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Icon	Hash: ec33e9c521cbb640147e6041cf453e4e Fuzzy: 8ae8e94646f2667c2b94734243825fef dHash: 898d3212564ccd4d
Image Base	`0x140000000`
Entry Point	`0x140001140`
Compilation Time	2024-01-23 11:47:13
Checksum	0x00000000 (Actual: 0x00520632)
OS Version	6.0
PEiD Signatures	`PE32+ executable (GUI) x86-64, for MS Windows`
Digital Signature	The expected hash does not match the digest in SpcInfo
Imports	2 libraries msvcrt, KERNEL32
Exports	0 functions
Resources	2 Resources
Sections	8 Sections

PE Sections

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Name	Virtual Address	Virtual Size	Raw Size	Entropy	Characteristics	MD5
`.text`	`0x00001000`	35,238 bytes	35,328 bytes	6.18 (Normal)	`IMAGE_SCN_CNT_CODE\|IMAGE_SCN_MEM_EXECUTE\|IMAGE_SCN_MEM_READ`	`61E45BDAB4F7AD993B609EB3449E987D`
`.rdata`	`0x0000a000`	11,992 bytes	12,288 bytes	4.70 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`F1B2AA8A2801EFE5B55DBAD859982DC9`
`.data`	`0x0000d000`	5,223,400 bytes	5,215,232 bytes	6.49 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE`	`623B98B71060E40B217CF39C65C296CB`
`.pdata`	`0x00509000`	384 bytes	512 bytes	3.13 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`56947665CC3DF105C866DCA15B3F6B7F`
`.00cfg`	`0x0050a000`	16 bytes	512 bytes	0.15 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`B18C7380298E104ADF73576FA46BCCC1`
`.tls`	`0x0050b000`	16 bytes	512 bytes	0.00 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE`	`BF619EAC0CDF3F68D496EA9344137E8B`
`.rsrc`	`0x0050c000`	49,296 bytes	49,664 bytes	7.96 (Packed/Encrypted)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`BB58BF55629F6C75A590F42729046B22`
`.reloc`	`0x00519000`	120 bytes	512 bytes	1.42 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_DISCARDABLE\|IMAGE_SCN_MEM_READ`	`8D35DC6B73A8835F45783BF89BE743BE`

Entropy Analysis Alert

1 section(s) with high entropy (≥7.5) detected - possible packing/encryption

Resource Analysis

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Total Resources: 2 (49,132 bytes)

Resource Type	Count	Total Size	Percentage
RT_ICON	1	49,112 bytes	100%
RT_GROUP_ICON	1	20 bytes	0%

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 expected hash does not match the digest in SpcInfo

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

Trojan.Win64.CoinMiner.sa Removal

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

Download Anti-Malware

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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