crimsonrat | 0ec4af0779080f9b0b534a6b1b6f1f09ee205cf49a4334046d683d1cce84d3a0

Analysis

max time kernel
139s
max time network
155s
platform
windows10_x64
resource
win10-en-20211208
submitted
30-01-2022 16:29

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General

Target

0ec4af0779080f9b0b534a6b1b6f1f09ee205cf49a4334046d683d1cce84d3a0.exe
Size

1.0MB
MD5

7cf75ee5180b4896f93b762ea0057e04
SHA1

633004d24a7dca046f10e419cd83728fd6be4a77
SHA256

0ec4af0779080f9b0b534a6b1b6f1f09ee205cf49a4334046d683d1cce84d3a0
SHA512

4019a01efd5be0a0aef9708e4c359147efbdb4066da7f2418ea5632686ddaac29247d201b5cf154276d22dad7c7b8d61523cb049bde9bd6048133a06ee4c1eee

Score

10^/10

crimsonrat rat

Malware Config

Signatures

CrimsonRAT Main Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000600000001ab35-118.dat	family_crimsonrat
behavioral2/files/0x000600000001ab35-119.dat	family_crimsonrat

CrimsonRat
Crimson RAT is a malware linked to a Pakistani-linked threat actor.
rat crimsonrat

Executes dropped EXE 1 IoCs

pid	Process
952	rvmthgarna.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	952	rvmthgarna.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 668 wrote to memory of 952	668	0ec4af0779080f9b0b534a6b1b6f1f09ee205cf49a4334046d683d1cce84d3a0.exe	69
PID 668 wrote to memory of 952	668	0ec4af0779080f9b0b534a6b1b6f1f09ee205cf49a4334046d683d1cce84d3a0.exe	69

C:\Users\Admin\AppData\Local\Temp\0ec4af0779080f9b0b534a6b1b6f1f09ee205cf49a4334046d683d1cce84d3a0.exe
"C:\Users\Admin\AppData\Local\Temp\0ec4af0779080f9b0b534a6b1b6f1f09ee205cf49a4334046d683d1cce84d3a0.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:668
- C:\ProgramData\Dharvdv\rvmthgarna.exe
  "C:\ProgramData\Dharvdv\rvmthgarna.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/668-115-0x00000000009F0000-0x00000000009F2000-memory.dmp

Filesize
8KB

Download
memory/668-117-0x00000000009F2000-0x00000000009F4000-memory.dmp

Filesize
8KB

Download
memory/952-120-0x000002A2FD5A0000-0x000002A2FDF48000-memory.dmp

Filesize
9.7MB

Download
memory/952-121-0x000002A2800B0000-0x000002A2800B2000-memory.dmp

Filesize
8KB

Download