9354f3e8c8522c479e9f54dc421244e02f620d55e3e6181f668b786eee85d69d

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2024, 16:59

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General

Target

2024-04-04_e20a2a8f9c196193c2891f0139938cc9_cryptolocker.exe
Size

42KB
MD5

e20a2a8f9c196193c2891f0139938cc9
SHA1

a458d7b674223eeadfa25d54d5aad18db0cdeedb
SHA256

9354f3e8c8522c479e9f54dc421244e02f620d55e3e6181f668b786eee85d69d
SHA512

4cee378d6c5559ca701bf00de94cdc0ee8d28cc6ff93dcf94711f8f945116d247d3d59e27cf193931773c7ab8132206ee3dea1f347d32b207544186ab08e2ba9
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx+:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f00000002313f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000f00000002313f-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-04-04_e20a2a8f9c196193c2891f0139938cc9_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3204	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 4880 wrote to memory of 3204	4880	2024-04-04_e20a2a8f9c196193c2891f0139938cc9_cryptolocker.exe	88
PID 4880 wrote to memory of 3204	4880	2024-04-04_e20a2a8f9c196193c2891f0139938cc9_cryptolocker.exe	88
PID 4880 wrote to memory of 3204	4880	2024-04-04_e20a2a8f9c196193c2891f0139938cc9_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-04_e20a2a8f9c196193c2891f0139938cc9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-04_e20a2a8f9c196193c2891f0139938cc9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4880
- 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:3204

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
42KB

MD5
1195215ec4231193005b0e4337cb1401

SHA1
8d6f8d4c4cd8716d76573b00b2eef95dc0192487

SHA256
0c46156784e518ff12cfd6fd08d8531d13675b36b23c9d9d3319c6062c140946

SHA512
85aaf4c14dac23dd94df37303bb5ce4865bac6522bd94cadf53c35aced4283ea83a5a2927cf689903a258a6e641051d54f59b6f18710830e1ff5a464575d36cf

Download Submit
memory/3204-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4880-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4880-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

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

Filesize
24KB

Download