0798399262fddd9aa337c84e3d837c40b9037c4cb55fbd4072122b545c8b94ee

Analysis

max time kernel
93s
max time network
114s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 11:43

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General

Target

2024-02-28_b5fa0e9e935d7c4a29d1661bcb7872c6_cryptolocker.exe
Size

50KB
MD5

b5fa0e9e935d7c4a29d1661bcb7872c6
SHA1

f31686e18f344810603604dfa4c1464bab3fcb2a
SHA256

0798399262fddd9aa337c84e3d837c40b9037c4cb55fbd4072122b545c8b94ee
SHA512

651733eb35d6933cfeb680d1a4c70ce4fe81b408672194b0d992c6e707fe227002819c7d47a29b12aeb0fcb9bf6d73cc08f43c440290e6b4cf9acc063e731b6b
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIE+l:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7g

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	2024-02-28_b5fa0e9e935d7c4a29d1661bcb7872c6_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
1188	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 996 wrote to memory of 1188	996	2024-02-28_b5fa0e9e935d7c4a29d1661bcb7872c6_cryptolocker.exe	88
PID 996 wrote to memory of 1188	996	2024-02-28_b5fa0e9e935d7c4a29d1661bcb7872c6_cryptolocker.exe	88
PID 996 wrote to memory of 1188	996	2024-02-28_b5fa0e9e935d7c4a29d1661bcb7872c6_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-28_b5fa0e9e935d7c4a29d1661bcb7872c6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_b5fa0e9e935d7c4a29d1661bcb7872c6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:996
- 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:1188

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
50KB

MD5
2a03a5c6eac66461f9e6b4c254a8e382

SHA1
e64f87c4d310180fc289cd51ada1a674d318dc8a

SHA256
2f81dd33eb37266ec12845c1fd44b852210a2f0e7c0f4d6af790ca016a41b527

SHA512
b1c6b8241325cc2a3915b05a5819f717b650f9178f2e25a84694688be37780b8cece3df9c228a3e6c5cde2af2007f4e31658ba32776717370c5845f7401b5342

Download Submit
memory/996-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/996-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/996-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1188-22-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download