743b95391604ece4eb58acbce54432d159272149457493e53e351cedeadc358d

Analysis

max time kernel
140s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
02/05/2024, 02:26

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General

Target

2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe
Size

44KB
MD5

39c684f4f09f512f4fa3efb9e223238b
SHA1

dd5d30076022acff1ce1ecc0771b49ad7ca470dc
SHA256

743b95391604ece4eb58acbce54432d159272149457493e53e351cedeadc358d
SHA512

60c9f75c19c6b269e0d35d686e3a4f5832aa1d99eb7bbdccdc167a2397daac3bed0fa8e55ce15523f0d0ec2f98bff06ece5eac5e0716c563d0f88cf1e267198b
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxK:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b54-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b54-12.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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1776	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 1984 wrote to memory of 1776	1984	2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe	84
PID 1984 wrote to memory of 1776	1984	2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe	84
PID 1984 wrote to memory of 1776	1984	2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1984
- 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:1776

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
b0bd50430677b1df48ea927ddd617f92

SHA1
aaf598715067357cd130353804cd4e8f999c3a9c

SHA256
75a6f4717a682d4bc9ad07d28f862b03043b896eff23b25a382ac14c66b9ef56

SHA512
a17429ccc7993e74d6b4a3454f8bc9eb5b065ec8409a8bb048a07c944a742c532d3c24f8e8990f1ef47778b425abf955077c492ea5781b34b45b1480f43a069e

Download Submit
memory/1776-25-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/1984-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1984-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1984-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download