7ed0cd9cd1bfed71ea8725d606c7d1235c153dd1dd9c45a4a7d24d86ade0ab7d

Analysis

max time kernel
93s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 05:34

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General

Target

2024-02-24_3ddb34c92ff78cbc3d525d8975cdeeb6_cryptolocker.exe
Size

35KB
MD5

3ddb34c92ff78cbc3d525d8975cdeeb6
SHA1

4329bd2e254752ec8a02c98c19149d5c78dfff13
SHA256

7ed0cd9cd1bfed71ea8725d606c7d1235c153dd1dd9c45a4a7d24d86ade0ab7d
SHA512

7ab331119ad6a257a928bf6bb92d509ee9ff9201d2cf51fb8f38205a60e3ecde311cb24ccfb5b0a1ad5128703ebe497a75bd0151f5f886413be11ef3a49af707
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wmk5R:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-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-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	2024-02-24_3ddb34c92ff78cbc3d525d8975cdeeb6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2524	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 4380 wrote to memory of 2524	4380	2024-02-24_3ddb34c92ff78cbc3d525d8975cdeeb6_cryptolocker.exe	88
PID 4380 wrote to memory of 2524	4380	2024-02-24_3ddb34c92ff78cbc3d525d8975cdeeb6_cryptolocker.exe	88
PID 4380 wrote to memory of 2524	4380	2024-02-24_3ddb34c92ff78cbc3d525d8975cdeeb6_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-24_3ddb34c92ff78cbc3d525d8975cdeeb6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_3ddb34c92ff78cbc3d525d8975cdeeb6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4380
- 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:2524

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
35KB

MD5
ef5056a0c88e560e1ded1f87b9500c0c

SHA1
ca23e06da9eb86409032307fafa186b2bb8837d7

SHA256
4ef5b91d07e02f4a0febcf2d4df1aba90d54054f4cd9433b54fee468ffef3206

SHA512
7687279fe0b97d6a5ef3dd9181aa313ca471537b2645ebfd0ef4a25b8538dbaa7464a7d80bb484f379554ab78dd583d67c85abbf130c355665ce58bed6d42bea

Download Submit
memory/2524-22-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4380-0-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4380-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4380-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download