df8ee8facb1d30c2c03e3115fbb91fedf95a701e56df9345e2137af8ec864aea

Analysis

max time kernel
143s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 09:23

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General

Target

2024-02-20_ec116ab0b1d56515a256000c751e1ba8_cryptolocker.exe
Size

31KB
MD5

ec116ab0b1d56515a256000c751e1ba8
SHA1

d3f5cceacba151bbb62a676426b998dd756d1659
SHA256

df8ee8facb1d30c2c03e3115fbb91fedf95a701e56df9345e2137af8ec864aea
SHA512

57fa514f120a350d0020ea063705aef1e98cdf9ab89c8ecbcc0af22de382d0d5ea83d4d11549eaee7abb17f0ffd2282bc82857789aa47a89c8ec24ee8eb8b9ef
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7m:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023217-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023217-12.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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-20_ec116ab0b1d56515a256000c751e1ba8_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4436	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 2428 wrote to memory of 4436	2428	2024-02-20_ec116ab0b1d56515a256000c751e1ba8_cryptolocker.exe	84
PID 2428 wrote to memory of 4436	2428	2024-02-20_ec116ab0b1d56515a256000c751e1ba8_cryptolocker.exe	84
PID 2428 wrote to memory of 4436	2428	2024-02-20_ec116ab0b1d56515a256000c751e1ba8_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-20_ec116ab0b1d56515a256000c751e1ba8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_ec116ab0b1d56515a256000c751e1ba8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2428
- 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:4436

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\hurok.exe

Filesize
31KB

MD5
f3094e4cca13fc9390a44ab81705c4af

SHA1
fc024865c72fb73484ef14b6fcf062254ddefb62

SHA256
21c6b6f2bcbfd12edc45d95b07369b7c61b35bcbdc6d78ea5d865674f26548eb

SHA512
dfb98683cd1a3915c57e54b51c258fb70912a447885c50a16ec83b26328445ed9d1847c3938291e02bf50d89bb8d7a0872134cf9d9b3cad28f4970e32f38ab5f

Download Submit
memory/2428-0-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/2428-1-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/2428-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4436-20-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download