crimsonrat | 6c917faa1a5ea5ae74525ace0c39c4a9208cb48f64372b8cd97c2e6e96a957db

Analysis

max time kernel
141s
max time network
161s
platform
windows10_x64
resource
win10-en-20211208
submitted
30-01-2022 16:09

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General

Target

6c917faa1a5ea5ae74525ace0c39c4a9208cb48f64372b8cd97c2e6e96a957db.exe
Size

1.1MB
MD5

645d2fdc3d638b6e9eeeda9bf7bd332b
SHA1

380150520be6c22ec302d0f89ac1f312a7b2dfa6
SHA256

6c917faa1a5ea5ae74525ace0c39c4a9208cb48f64372b8cd97c2e6e96a957db
SHA512

a1ac538eaf42f522f05c04833d6bdb736489f6c702f5bb74435fcaa5b80241ad9e69a3088e9b16a665d1140cc4d5ba0f8326a6092147b0be93cb9cb705297539

Score

10^/10

crimsonrat rat

Malware Config

Signatures

CrimsonRAT Main Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000200000001ab5b-118.dat	family_crimsonrat
behavioral2/files/0x000200000001ab5b-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
488	ntharprmes.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 2 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 488	2668	6c917faa1a5ea5ae74525ace0c39c4a9208cb48f64372b8cd97c2e6e96a957db.exe	69
PID 2668 wrote to memory of 488	2668	6c917faa1a5ea5ae74525ace0c39c4a9208cb48f64372b8cd97c2e6e96a957db.exe	69

C:\Users\Admin\AppData\Local\Temp\6c917faa1a5ea5ae74525ace0c39c4a9208cb48f64372b8cd97c2e6e96a957db.exe
"C:\Users\Admin\AppData\Local\Temp\6c917faa1a5ea5ae74525ace0c39c4a9208cb48f64372b8cd97c2e6e96a957db.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2668
- C:\ProgramData\Rharbwd\ntharprmes.exe
  "C:\ProgramData\Rharbwd\ntharprmes.exe"
  2⤵
  - Executes dropped EXE
  PID:488

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/488-120-0x000001BB1FFF0000-0x000001BB20948000-memory.dmp

Filesize
9.3MB

Download
memory/488-121-0x000001BB3AE70000-0x000001BB3AE72000-memory.dmp

Filesize
8KB

Download
memory/2668-115-0x00000000026B0000-0x00000000026B2000-memory.dmp

Filesize
8KB

Download
memory/2668-117-0x00000000026B2000-0x00000000026B4000-memory.dmp

Filesize
8KB

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