5ffe3b588f2b6f90f8a3a20a708eb26a10c0bad2b7e64cf198ce2a424319e587

Analysis

max time kernel
86s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
17-02-2024 23:33

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe
Size

35KB
MD5

95238c544af7dbaa94a6264fde1b22db
SHA1

cbe328978e277039100c1c744ccf7b897254c6af
SHA256

5ffe3b588f2b6f90f8a3a20a708eb26a10c0bad2b7e64cf198ce2a424319e587
SHA512

63d1b02378ca5de5b79e5c3437756859245770b889155994e0e8756b170ed75ee37e364701b42495f4e0ad3bdda317ab147489e81a5f0ce08f7d07d5f645c988
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wmkpD:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231ed-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231ed-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1872	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 3936 wrote to memory of 1872	3936	2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe	83
PID 3936 wrote to memory of 1872	3936	2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe	83
PID 3936 wrote to memory of 1872	3936	2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3936
- 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:1872

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
35KB

MD5
e73ee8cdf4794698e22a0b2a06f09e05

SHA1
b676f1c84ecf794be4ed9555b6591691c5325450

SHA256
c4b96dcd51615036017b22adec7448a7b95e9eb8ba2b05c1903e787fbd3a4279

SHA512
48d2fa1698d08e25a85fdfead2145d50162ff469c5bbdc9fc3af21a75a648a95798b6a18fc4b4d83ce2aa8689870d414079a9e66283fe730848090fdd09873d1

Download Submit
memory/1872-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3936-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3936-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3936-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download