crimsonrat | 1a8903d201f01608fba5c48f0f9d6d0546a0534c8af6fa61ecf28b2f484e77fe

Analysis

max time kernel
141s
max time network
159s
platform
windows10_x64
resource
win10-en-20211208
submitted
30/01/2022, 16:10

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General

Target

my fldr for u diensh/my folder for u dinesh.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/0x000500000001ab61-121.dat	family_crimsonrat
behavioral2/files/0x000500000001ab61-122.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
3600	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 3052 wrote to memory of 3600	3052	my folder for u dinesh.exe	68
PID 3052 wrote to memory of 3600	3052	my folder for u dinesh.exe	68

C:\Users\Admin\AppData\Local\Temp\my fldr for u diensh\my folder for u dinesh.exe
"C:\Users\Admin\AppData\Local\Temp\my fldr for u diensh\my folder for u dinesh.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3052
- C:\ProgramData\Rharbwd\ntharprmes.exe
  "C:\ProgramData\Rharbwd\ntharprmes.exe"
  2⤵
  - Executes dropped EXE
  PID:3600

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/3052-119-0x0000000000B60000-0x0000000000B62000-memory.dmp

Filesize
8KB

Download
memory/3052-120-0x0000000000B62000-0x0000000000B64000-memory.dmp

Filesize
8KB

Download
memory/3600-123-0x000002D503320000-0x000002D503C78000-memory.dmp

Filesize
9.3MB

Download
memory/3600-124-0x000002D51ED40000-0x000002D51ED42000-memory.dmp

Filesize
8KB

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