d07a9f0d31a9f8753db679d2743d243e2e8698e28f309e6fbabd10f9fb970b07

Analysis

max time kernel
144s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 21:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-15_4ef0d0efa12f1703156b366f9cabc0e2_cryptolocker.exe
Size

46KB
MD5

4ef0d0efa12f1703156b366f9cabc0e2
SHA1

1056bd2c68240f93938c75c929dfd2e081a33a8c
SHA256

d07a9f0d31a9f8753db679d2743d243e2e8698e28f309e6fbabd10f9fb970b07
SHA512

94f10853891593a0af97dbe67fc99744efcb4e8926f97685bdf9f7bdf5cf09b1cfd4a2bec3b41e66ecde745090d402edd880fb57842e247367633f6d5d65f6b7
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxO:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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	2024-03-15_4ef0d0efa12f1703156b366f9cabc0e2_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2800	hurok.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 4352 wrote to memory of 2800	4352	2024-03-15_4ef0d0efa12f1703156b366f9cabc0e2_cryptolocker.exe	88
PID 4352 wrote to memory of 2800	4352	2024-03-15_4ef0d0efa12f1703156b366f9cabc0e2_cryptolocker.exe	88
PID 4352 wrote to memory of 2800	4352	2024-03-15_4ef0d0efa12f1703156b366f9cabc0e2_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-15_4ef0d0efa12f1703156b366f9cabc0e2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_4ef0d0efa12f1703156b366f9cabc0e2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4352
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2800

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

Loading Replay Monitor...

Downloads

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

Filesize
46KB

MD5
8bd1902a6c37fdfa30033ba10fceaa75

SHA1
e88e0bc6acef58c6976657a675fb4b12355ca325

SHA256
70c0463dd2e241642293aa14362fabf7d4f2c66009e3b9ea8633394a33c9cd93

SHA512
909c28803a862a264b27cbcb867e40e6e29bace14a70650b1002432298e06591766184a822e2746518efb508ccc1c1d96263cdfe750246003f53fdcd1cddcfe5

Download Submit
memory/2800-21-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/4352-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4352-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4352-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download