crimsonrat | 1a8903d201f01608fba5c48f0f9d6d0546a0534c8af6fa61ecf28b2f484e77fe

Analysis

max time kernel
146s
max time network
161s
platform
windows7_x64
resource
win7-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
behavioral1/files/0x00060000000134d9-58.dat	family_crimsonrat
behavioral1/files/0x00060000000134d9-59.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
2044	ntharprmes.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Rharbwd\ntharprmes.exe	my folder for u dinesh.exe
File opened for modification	C:\PROGRA~3\Rharbwd\ntharprmes.exe	my folder for u dinesh.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 1964 wrote to memory of 2044	1964	my folder for u dinesh.exe	29
PID 1964 wrote to memory of 2044	1964	my folder for u dinesh.exe	29
PID 1964 wrote to memory of 2044	1964	my folder for u dinesh.exe	29

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⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1964
- C:\ProgramData\Rharbwd\ntharprmes.exe
  "C:\ProgramData\Rharbwd\ntharprmes.exe"
  2⤵
  - Executes dropped EXE
  PID:2044

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/1964-55-0x0000000000A70000-0x0000000000A72000-memory.dmp

Filesize
8KB

Download
memory/1964-56-0x000007FEF1F10000-0x000007FEF2FA6000-memory.dmp

Filesize
16.6MB

Download
memory/1964-57-0x0000000000A76000-0x0000000000A95000-memory.dmp

Filesize
124KB

Download
memory/2044-60-0x000007FEF1F10000-0x000007FEF2FA6000-memory.dmp

Filesize
16.6MB

Download
memory/2044-61-0x0000000000930000-0x0000000000932000-memory.dmp

Filesize
8KB

Download
memory/2044-62-0x0000000000936000-0x0000000000955000-memory.dmp

Filesize
124KB

Download