dcb4b2788acda77aa54d204477fd0214c1cc2ef6c8af70834bea6cbd0cbc4f72

Analysis

max time kernel
146s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 18:31

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General

Target

2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe
Size

44KB
MD5

3ec71fa9edb30a5e9d737e364da24826
SHA1

48d5838b338d5c445b654980b74fa9ddd860fa3a
SHA256

dcb4b2788acda77aa54d204477fd0214c1cc2ef6c8af70834bea6cbd0cbc4f72
SHA512

76c67b8c091f5773300d5b832c43408978b5c6a1cf3c62444d4fcea348454e3068a59a247f61201b3d76616b7517addd54a36c29f3554bfcf8495cb141b350a5
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxP:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023226-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023226-12.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	2024-02-18_3ec71fa9edb30a5e9d737e364da24826_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
4272	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 4644 wrote to memory of 4272	4644	2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe	84
PID 4644 wrote to memory of 4272	4644	2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe	84
PID 4644 wrote to memory of 4272	4644	2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4644
- 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:4272

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
44KB

MD5
82e6125ef3794674a8b94412971f6407

SHA1
ecb223647e841fb17e0f1a1263fa3766527f582a

SHA256
a64cbc74acd0bab8180383ee809b6f0c7e13d395b17f8d93822c2b3a220adfc0

SHA512
55971e34c30e0eae392e5a5fdbe403ac571073165368c1060e721d7e06921e3df7aa3524733af08a771935a7181c079b23756086e5191acbc38b4a9276190f8d

Download Submit
memory/4272-22-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/4644-0-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/4644-1-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/4644-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download