5a462858f3f3f41614347ce4d60b12b1fc34a088ac8563f94f441d02d0bed404

Analysis

max time kernel
93s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 19:02

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General

Target

2024-05-29_4b4762f64cbc22aaf3569e6beed6faa7_cryptolocker.exe
Size

31KB
MD5

4b4762f64cbc22aaf3569e6beed6faa7
SHA1

158a3fce8d2abfba8fa0dfdc7c93b965d74467c1
SHA256

5a462858f3f3f41614347ce4d60b12b1fc34a088ac8563f94f441d02d0bed404
SHA512

8d994f2aec77c5c4ef9775c8a25c49f66918cd7e319e8ab0f6648a88dd3f6f4b70652bfee57d155d519899667222e37421c55af4b131128cca7c791287e1697a
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNfr:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002343c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002343c-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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-29_4b4762f64cbc22aaf3569e6beed6faa7_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2688	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 2580 wrote to memory of 2688	2580	2024-05-29_4b4762f64cbc22aaf3569e6beed6faa7_cryptolocker.exe	82
PID 2580 wrote to memory of 2688	2580	2024-05-29_4b4762f64cbc22aaf3569e6beed6faa7_cryptolocker.exe	82
PID 2580 wrote to memory of 2688	2580	2024-05-29_4b4762f64cbc22aaf3569e6beed6faa7_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-29_4b4762f64cbc22aaf3569e6beed6faa7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_4b4762f64cbc22aaf3569e6beed6faa7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2580
- 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:2688

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
31KB

MD5
32caa602c8e87afd7f94a4ca5ed73caf

SHA1
c20a523c765331eda6686bd4c45762148d4c386f

SHA256
533cf059e1a09c3376b2befc8e5acfdeb50f15c039974fc6d3f81a4cb778940d

SHA512
fd0588ebfebf4072c2c2cf68cb3150a7dbeb54b4e7bbe8785962149958a76002cb763ba66dd3eb7d50c9c1282c264ee1c2b9771205665c694cd1d2f447e621c4

Download Submit
memory/2580-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/2580-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2580-8-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/2688-25-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download