c8eda509fa1c3febed5315c5c13753e62d397025c7eb44cc9b3fc07e51eea67e

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 03:52

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General

Target

2024-04-20_9271a6520b90731ecbd0e4f0a82a0d32_cryptolocker.exe
Size

46KB
MD5

9271a6520b90731ecbd0e4f0a82a0d32
SHA1

de2bf6d5c23bd9417097acb498d07c209f00a690
SHA256

c8eda509fa1c3febed5315c5c13753e62d397025c7eb44cc9b3fc07e51eea67e
SHA512

bf4553337ad57299c442ef58b6410dc4cf00aa6e369b8bcc4ef69949bd08b86375d18a3c822435db61c270d36eef7041528b9cbc9629d4c07ee715567b2ff041
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvccwDFWP:79mqyNhQMOtEvwDpjBzck1W4P

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1944-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e97a-13.dat	CryptoLocker_rule2
behavioral2/memory/1944-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1944-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e97a-13.dat	CryptoLocker_set1
behavioral2/memory/1944-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	2024-04-20_9271a6520b90731ecbd0e4f0a82a0d32_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2536	asih.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 2536	1944	2024-04-20_9271a6520b90731ecbd0e4f0a82a0d32_cryptolocker.exe	87
PID 1944 wrote to memory of 2536	1944	2024-04-20_9271a6520b90731ecbd0e4f0a82a0d32_cryptolocker.exe	87
PID 1944 wrote to memory of 2536	1944	2024-04-20_9271a6520b90731ecbd0e4f0a82a0d32_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-20_9271a6520b90731ecbd0e4f0a82a0d32_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_9271a6520b90731ecbd0e4f0a82a0d32_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
46KB

MD5
c59582759ca1c48ca159106e05431587

SHA1
1bd887037d1b6f07efff2de3d9f230dc53b83d92

SHA256
6b5e064e164cd1ad07108b8429c2c1c7ad617ac6e3a8dcd49ac7d34a13c5deff

SHA512
3fa050ecc0710ef2e25458a12f0e252c2a904636b9cba013cfeb4e7c2f382c921ce2ccb5b06b2fe4ba123e4774a094a8384bd29d2fd166ff802834cb26f8f3f2

Download Submit
memory/1944-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1944-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/1944-2-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/1944-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1944-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2536-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2536-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download