8d968506fad49b5819bc1c11969fc313ad41ac8efa148b472c9b4d8a212591dc

Analysis

max time kernel
149s
max time network
151s
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, 06:23

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General

Target

2024-02-28_047980f8b0ffb7986e8cf28f1b72d40b_cryptolocker.exe
Size

36KB
MD5

047980f8b0ffb7986e8cf28f1b72d40b
SHA1

77c95a86cae801552d984e1c75eeab996436cd74
SHA256

8d968506fad49b5819bc1c11969fc313ad41ac8efa148b472c9b4d8a212591dc
SHA512

0c831d7e2ca2e6a087396af60ddbfe6580feddfd4f84de6955f330de395f417113f2dc900313e45001797ca66f4246cbd74d784481f3d48a81ef31008691250c
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wmk5ut:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-02-28_047980f8b0ffb7986e8cf28f1b72d40b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4484	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 688 wrote to memory of 4484	688	2024-02-28_047980f8b0ffb7986e8cf28f1b72d40b_cryptolocker.exe	87
PID 688 wrote to memory of 4484	688	2024-02-28_047980f8b0ffb7986e8cf28f1b72d40b_cryptolocker.exe	87
PID 688 wrote to memory of 4484	688	2024-02-28_047980f8b0ffb7986e8cf28f1b72d40b_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-28_047980f8b0ffb7986e8cf28f1b72d40b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_047980f8b0ffb7986e8cf28f1b72d40b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:688
- 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:4484

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
36KB

MD5
834bc39b10cbab76880790ce8f586912

SHA1
2c67831d6da3c9a9c5fedee03da78633710657f7

SHA256
c5530396f454e2940b15dd47d7e0078ae95f41c1ecd8b6cd0d5e35a31d6b3b29

SHA512
7cf4907f081b813c18b8a186f6a811ed60cae0854b56e2b207fb4f5206b663627f227fb8ec54cadeb1a69b0054350cc395c32640e9de1cc659a7ddd37e36fc51

Download Submit
memory/688-0-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/688-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/688-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download