crimsonrat | dfa54dc6c171740352006b7125219b1fd9cd1403be4a3440c1ad1acb1b42d37e

Analysis

max time kernel
151s
max time network
129s
platform
windows7_x64
resource
win7-en-20211208
submitted
21-01-2022 23:02

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General

Target

dfa54dc6c171740352006b7125219b1fd9cd1403be4a3440c1ad1acb1b42d37e.exe
Size

387KB
MD5

2a82b0c4a6d1e0b685e15ee159324c28
SHA1

1dd115a3b1e39dca45e07bf44d76bd3f83e624f5
SHA256

dfa54dc6c171740352006b7125219b1fd9cd1403be4a3440c1ad1acb1b42d37e
SHA512

e64676c84a3a7ff8c6a9129a5c9c8fe40ac0287f6c41fe94b3b609b01917d234a032bb19a0be737eabd968714dba38715a4e8016da6ba968f454a0969a4e0e37

Score

10^/10

crimsonrat rat

Malware Config

Signatures

CrimsonRAT Main Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000600000001393d-57.dat	family_crimsonrat
behavioral1/files/0x000600000001393d-56.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
1376	nirtbivaes.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Ladhnara\nirtbivaes.exe	dfa54dc6c171740352006b7125219b1fd9cd1403be4a3440c1ad1acb1b42d37e.exe
File opened for modification	C:\PROGRA~3\Ladhnara\nirtbivaes.exe	dfa54dc6c171740352006b7125219b1fd9cd1403be4a3440c1ad1acb1b42d37e.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 1412 wrote to memory of 1376	1412	dfa54dc6c171740352006b7125219b1fd9cd1403be4a3440c1ad1acb1b42d37e.exe	27
PID 1412 wrote to memory of 1376	1412	dfa54dc6c171740352006b7125219b1fd9cd1403be4a3440c1ad1acb1b42d37e.exe	27
PID 1412 wrote to memory of 1376	1412	dfa54dc6c171740352006b7125219b1fd9cd1403be4a3440c1ad1acb1b42d37e.exe	27

C:\Users\Admin\AppData\Local\Temp\dfa54dc6c171740352006b7125219b1fd9cd1403be4a3440c1ad1acb1b42d37e.exe
"C:\Users\Admin\AppData\Local\Temp\dfa54dc6c171740352006b7125219b1fd9cd1403be4a3440c1ad1acb1b42d37e.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1412
- C:\ProgramData\Ladhnara\nirtbivaes.exe
  "C:\ProgramData\Ladhnara\nirtbivaes.exe"
  2⤵
  - Executes dropped EXE
  PID:1376

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/1376-58-0x0000000000B80000-0x0000000000B82000-memory.dmp

Filesize
8KB

Download
memory/1376-59-0x000007FEEB910000-0x000007FEEC9A6000-memory.dmp

Filesize
16.6MB

Download
memory/1376-60-0x0000000000B86000-0x0000000000BA5000-memory.dmp

Filesize
124KB

Download
memory/1412-54-0x0000000001000000-0x000000000106A000-memory.dmp

Filesize
424KB

Download
memory/1412-55-0x000000001B300000-0x000000001B302000-memory.dmp

Filesize
8KB

Download