4866650626055c8b53c9372a5a5540c5d65e0e22d4360f4368117dc8a1f91d39

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/04/2024, 09:27

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General

Target

2024-04-06_1c82e8095d0bd85e0e2b3137befe2dd1_cryptolocker.exe
Size

63KB
MD5

1c82e8095d0bd85e0e2b3137befe2dd1
SHA1

3612c44f1932031d29facc97e86bd6519d8462ec
SHA256

4866650626055c8b53c9372a5a5540c5d65e0e22d4360f4368117dc8a1f91d39
SHA512

b64979d722a359d5153b156ffc9ce2e8d1b2b3b8ad885ead7d77f17bc5b9b4cd1752f7f1f3a0520dde924f724ec18cb1bb32c34fa8827d4241467e4a538f9b27
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xblzoy:X6a+SOtEvwDpjBrOP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231e1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231e1-12.dat	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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-04-06_1c82e8095d0bd85e0e2b3137befe2dd1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3944	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 2528 wrote to memory of 3944	2528	2024-04-06_1c82e8095d0bd85e0e2b3137befe2dd1_cryptolocker.exe	86
PID 2528 wrote to memory of 3944	2528	2024-04-06_1c82e8095d0bd85e0e2b3137befe2dd1_cryptolocker.exe	86
PID 2528 wrote to memory of 3944	2528	2024-04-06_1c82e8095d0bd85e0e2b3137befe2dd1_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-06_1c82e8095d0bd85e0e2b3137befe2dd1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-06_1c82e8095d0bd85e0e2b3137befe2dd1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3944

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
63KB

MD5
95bcdd760b69c249d583b9a44805e056

SHA1
8188a5a941d8a4c1143567945241e025ebaa3017

SHA256
62c301ba4d0e5da001f83b389a80630ecbd060140166b3f40512fc854bfa7926

SHA512
7a420bbebfd8aacfcdc38bacb9ca675c85f611bfed155ea0382c92bf2df8620ce89354a96b40f0a67c25f8a55c86d1abfa951750275c39e3954282549cd036ee

Download Submit
memory/2528-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2528-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2528-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3944-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3944-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download