3baffc3a2e84bb92ff02f231050020c75649c95e18b39865de373eb1fca63c73

Analysis

max time kernel
135s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 21:36

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General

Target

2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe
Size

31KB
MD5

a86c0678d04e470fbc25702d9a6c3d9b
SHA1

85494c009af8de658c0d0c4f6fb0d36b1590a429
SHA256

3baffc3a2e84bb92ff02f231050020c75649c95e18b39865de373eb1fca63c73
SHA512

693c81a80b90437dcefb9de8e683c3f6ea37421b4048854068b5106ec69e298e571ea8793073c3dca2f96621b3cdad58521289a26805bb3f3ac1334f01299a7f
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNf3:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002328e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
752	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 1040 wrote to memory of 752	1040	2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe	83
PID 1040 wrote to memory of 752	1040	2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe	83
PID 1040 wrote to memory of 752	1040	2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1040
- 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:752

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
dc7b829c4e78bbbc58a7cd256c2cff4e

SHA1
df0756abea19d47f31b6eaea6935d9c9eb54d41f

SHA256
c77fa24186399c38bc94d1db0ab492bdcf46afd30461f15361c6f48a3c3eb992

SHA512
361078fd8f0b8e1eb87369dd798d5f30d5938b417fc95115891321899ee94862dc7f505d2419d0474a7d8f85f22dda66699607d7e30892e05418b5522cbf4eaf

Download Submit
memory/1040-0-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/1040-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1040-8-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download