Medellin_a64.exe Trojan CobaltStrike Analysis

Updated 2 years ago

Checked by Malware Check

medellin_a64.exe

Technical Analysis

File Name	medellin_a64.exe
File Type	PE32+ executable (GUI) x86-64 (stripped to external PDB), for MS Windows
Scanner Version	1.0.168.174
Database Version	2024-03-02 00:00:14 UTC

⚠

Trojan.Win64.CobaltStrike.tr

Malware family: CobaltStrike

Cobalt Strike is a penetration testing framework that deploys the Beacon agent for system control. While designed for legitimate security testing, it provides command execution, keylogging, file transfer, privilege escalation, and lateral movement capabilities. The tool operates in-memory to avoid disk-based detection and supports multiple communication protocols.

N/A

Detection Rate

19,456

File Size (bytes)

2024-03-02

Analysis Date

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File Identification

Hash Type	Value	Action
MD5	02e9c672ea01108f756a99fce1565d13
SHA1	3bb4fa1d09facebca7020a6ea106349bfe3cd732
SHA256	e537a0e18d56805e3c516ad561030e78cc85164df51ee9a0d4df0f51d83c6806
SHA512	0c3d987bea551145ee1f0b215163dd30ac4f80747cefc4435b9bf745a0bd6692cd547dfcf0e744aa40ad2f42b6ae39fdda41965dba228d3305d7977e55c94bce
ImpHash	147442e63270e287ed57d33257638324

PE Analysis

Basic Information

▼

Image Base	`0x00400000`
Entry Point	`0x004014c0`
Compilation Time	1970-01-01 00:00:00
Checksum	0x0000969b (Actual: 0x0000969b)
OS Version	4.0
PEiD Signatures	`PE32+ executable (GUI) x86-64 (stripped to external PDB), for MS Windows`
Digital Signature	The PE file does not contain a certificate table.
Imports	2 libraries KERNEL32, msvcrt
Exports	0 functions
Resources	0 Resources
Sections	9 Sections

PE Sections

▼

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Characteristics	MD5
`.text`	`0x00001000`	8,360 bytes	8,704 bytes	5.92 (Normal)	`IMAGE_SCN_CNT_CODE\|IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_EXECUTE\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_ALIGN_16BYTES`	`3040BA596609D0F7BA50AC030468B13E`
`.data`	`0x00004000`	1,264 bytes	1,536 bytes	5.82 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE\|IMAGE_SCN_ALIGN_32BYTES`	`609326129F49CDC37213AE90BDFEF8B0`
`.rdata`	`0x00005000`	2,320 bytes	2,560 bytes	4.47 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_ALIGN_32BYTES`	`B02C91451E7ABAD85F4A5BBE48FD6333`
`.pdata`	`0x00006000`	696 bytes	1,024 bytes	2.97 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_ALIGN_4BYTES`	`AD5EC754CF0E204A3A3C39436081F3BC`
`.xdata`	`0x00007000`	568 bytes	1,024 bytes	2.63 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_ALIGN_4BYTES`	`6CE9E303FB86766D702ECB2B174CF348`
`.bss`	`0x00008000`	2,512 bytes	0 bytes	0.00 (Normal)	`IMAGE_SCN_CNT_UNINITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE\|IMAGE_SCN_ALIGN_32BYTES`	`D41D8CD98F00B204E9800998ECF8427E`
`.idata`	`0x00009000`	2,264 bytes	2,560 bytes	3.71 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE\|IMAGE_SCN_ALIGN_4BYTES`	`EC8DEDB62953693CF02784F71F75D547`
`.CRT`	`0x0000a000`	104 bytes	512 bytes	0.27 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE\|IMAGE_SCN_ALIGN_8BYTES`	`52D79E9AECF5D5C3145D3EC54AA197A8`
`.tls`	`0x0000b000`	16 bytes	512 bytes	0.00 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE\|IMAGE_SCN_ALIGN_8BYTES`	`BF619EAC0CDF3F68D496EA9344137E8B`

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.CobaltStrike.tr Removal

Gridinsoft has the capability to identify and eliminate Trojan.Win64.CobaltStrike.tr 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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