12e86354abbf0383ec22d6588a95e5b72f9729fff5ac6fe8c50852d63576dfce

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2024, 22:24

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General

Target

2024-01-26_a95ad62639bfdc97d779a6ce2b1207ca_cryptolocker.exe
Size

41KB
MD5

a95ad62639bfdc97d779a6ce2b1207ca
SHA1

32864fd592297bd7f7f64a39165f8edf6abc4779
SHA256

12e86354abbf0383ec22d6588a95e5b72f9729fff5ac6fe8c50852d63576dfce
SHA512

ddb2bcf96d0531a1caf26fc8c62fa91d4caae6001d068d12f3fb1ee2ac8982caeb5a9c4e6737c5fe5e443f4f6fc74c01aba0f5c0884ba9087388b0b4646ea76f
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMvcWd:bc/y2lkF0+B23

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322f-12.dat	CryptoLocker_rule2

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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-26_a95ad62639bfdc97d779a6ce2b1207ca_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4572	rewok.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 3004 wrote to memory of 4572	3004	2024-01-26_a95ad62639bfdc97d779a6ce2b1207ca_cryptolocker.exe	87
PID 3004 wrote to memory of 4572	3004	2024-01-26_a95ad62639bfdc97d779a6ce2b1207ca_cryptolocker.exe	87
PID 3004 wrote to memory of 4572	3004	2024-01-26_a95ad62639bfdc97d779a6ce2b1207ca_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-26_a95ad62639bfdc97d779a6ce2b1207ca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_a95ad62639bfdc97d779a6ce2b1207ca_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4572

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\rewok.exe

Filesize
41KB

MD5
7ddcd13739abe9640c0d5d4b1728f6db

SHA1
57601d9665a9733fea85bb505f27d7bf4ce84273

SHA256
4d501c329848c51681aaa83ec3b8a7309b365d1172c88c8623a73ae705be4204

SHA512
44c20f1ed6797bfa1024a68079117c118a449a6852045d772671ffd873a0fd3313260856c72a86b7c253142610541d24021e5a461e64c7bccc016fecf9f8da01

Download Submit
memory/3004-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3004-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3004-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4572-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download