f4d74c5f9e2b46068a4dbf87a8617bd11654ea8ec88e6277d8a93febed3ed12a

Analysis

max time kernel
141s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 07:35

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General

Target

2024-05-10_605fdc646ffd3b9e8d15989fb05bee49_cryptolocker.exe
Size

63KB
MD5

605fdc646ffd3b9e8d15989fb05bee49
SHA1

509aa3410e28945c0f2ee63525233acabd402b26
SHA256

f4d74c5f9e2b46068a4dbf87a8617bd11654ea8ec88e6277d8a93febed3ed12a
SHA512

329e0c9fde459fd9c7f814a67df67aecb0b1dfc2b74a94f3722b6cac2bba37bc0bdfc01ad85e19cd8ed90170540343630ac36485cfc0f4042bd6d3cf8d2249b3
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293W0:aq7tdgI2MyzNORQtOflIwoHNV2XBFV77

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002327c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002327c-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-10_605fdc646ffd3b9e8d15989fb05bee49_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3592	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 628 wrote to memory of 3592	628	2024-05-10_605fdc646ffd3b9e8d15989fb05bee49_cryptolocker.exe	84
PID 628 wrote to memory of 3592	628	2024-05-10_605fdc646ffd3b9e8d15989fb05bee49_cryptolocker.exe	84
PID 628 wrote to memory of 3592	628	2024-05-10_605fdc646ffd3b9e8d15989fb05bee49_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-10_605fdc646ffd3b9e8d15989fb05bee49_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_605fdc646ffd3b9e8d15989fb05bee49_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:628
- 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:3592

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
63KB

MD5
cbd3d2469c86665ddfa207a9e685d413

SHA1
09cb52c848d24ee72af2a895b3fa44f1ef9c180f

SHA256
fa32814d8e53fa5033c16832ca16794c155bb888f11ac026323039bceb5197c2

SHA512
544cfab027bf44f117a46cc42852e25f6fc926089b67e91602b2796654f0a6ce6b4fbf2e724db14f004c23e3532cc3831ccdbe2fb7217014a3fe8b2f509e0e77

Download Submit
memory/628-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/628-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/628-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3592-25-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download