crimsonrat | e60ad9543b873569432bc05cbfc8dd0f72a618f26eb256f15048b820e151846e

Analysis

max time kernel
122s
max time network
146s
platform
windows7_x64
resource
win7-en-20211208
submitted
21/01/2022, 22:57

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General

Target

MoI Operation/MoI Operation.exe
Size

309KB
MD5

2a2088cc646b984cb3d75d18c8708eb5
SHA1

20ceef8731d905794c8d7a14f4ecf9fb5aa29e28
SHA256

5a449782c6d286a5af7fd5cbab5d5d46dd4dd153cbc46e4aeae0ea54f2785980
SHA512

cc23d711d756ca322786d0327b017af5e457b2ac144a03cdff9456164bd58e5dfa0b5ac6df02c9a3d7036cd82a29278eed055357e7080797673aaed95886de1d

Score

10^/10

crimsonrat rat

Malware Config

Signatures

CrimsonRAT Main Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000500000001412c-58.dat	family_crimsonrat
behavioral1/files/0x000500000001412c-59.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
292	nirtbivaes.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~3\Ladhnara\nirtbivaes.exe	MoI Operation.exe
File created	C:\PROGRA~3\Ladhnara\nirtbivaes.exe	MoI Operation.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 WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 292	1368	MoI Operation.exe	27
PID 1368 wrote to memory of 292	1368	MoI Operation.exe	27
PID 1368 wrote to memory of 292	1368	MoI Operation.exe	27

C:\Users\Admin\AppData\Local\Temp\MoI Operation\MoI Operation.exe
"C:\Users\Admin\AppData\Local\Temp\MoI Operation\MoI Operation.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1368
- C:\ProgramData\Ladhnara\nirtbivaes.exe
  "C:\ProgramData\Ladhnara\nirtbivaes.exe"
  2⤵
  - Executes dropped EXE
  PID:292

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/292-60-0x000007FEF2220000-0x000007FEF32B6000-memory.dmp

Filesize
16.6MB

Download
memory/292-62-0x0000000000A26000-0x0000000000A45000-memory.dmp

Filesize
124KB

Download
memory/292-61-0x0000000000A20000-0x0000000000A22000-memory.dmp

Filesize
8KB

Download
memory/1368-55-0x0000000000AB0000-0x0000000000AB2000-memory.dmp

Filesize
8KB

Download
memory/1368-56-0x000007FEF2220000-0x000007FEF32B6000-memory.dmp

Filesize
16.6MB

Download
memory/1368-57-0x0000000000AB6000-0x0000000000AD5000-memory.dmp

Filesize
124KB

Download