df6c7f45c97ef6a35a4d6e8790aedfc64fa198e5db4529612efa946ebf201531

Analysis

max time kernel
151s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240220-en
resource tags

arch:x64arch:x86image:win10v2004-20240220-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 14:36

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General

Target

2024-02-20_5147f664a5a6448807b630f7cfac612c_cryptolocker.exe
Size

44KB
MD5

5147f664a5a6448807b630f7cfac612c
SHA1

49da1f30f234afb15a8bf05c742aab609553456f
SHA256

df6c7f45c97ef6a35a4d6e8790aedfc64fa198e5db4529612efa946ebf201531
SHA512

912ce7495e6a47711791d6ff93220fced3d0a62232dee4481d8ceb56342ddd50dfe08aa30639d3644b994e451a3851753ea87a875969a2475998659223d145d8
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqmz4kmmIPTH:bc/y2lkF0+BjjIIbH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023223-12.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-1-5-21-4123566616-543693798-272350410-1000\Control Panel\International\Geo\Nation	2024-02-20_5147f664a5a6448807b630f7cfac612c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1504	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 4880 wrote to memory of 1504	4880	2024-02-20_5147f664a5a6448807b630f7cfac612c_cryptolocker.exe	88
PID 4880 wrote to memory of 1504	4880	2024-02-20_5147f664a5a6448807b630f7cfac612c_cryptolocker.exe	88
PID 4880 wrote to memory of 1504	4880	2024-02-20_5147f664a5a6448807b630f7cfac612c_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-20_5147f664a5a6448807b630f7cfac612c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_5147f664a5a6448807b630f7cfac612c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4880
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1504

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
44KB

MD5
fa89bccb697db7c045e56f889d433bff

SHA1
fd126fc0edf13b7956ec064947eae84496c51adb

SHA256
7ddcd2c7b0ec3dc46137dc60c9a4e56a7ebde4f6cade67ff9168ee7e4b50dd88

SHA512
a75130331e498bea7c1ced66bd9420d1c59189fd649aadba36687a6e5fad7a714b516fbf2b43e85e7890ac6c346da5966baaf7d78f49d9afc77b252a608ea164

Download Submit
memory/1504-20-0x00000000021F0000-0x00000000021F6000-memory.dmp

Filesize
24KB

Download
memory/4880-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4880-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4880-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download