3ae12c717cc2ff12e12cd19f34d0a5b61d35fce7554bd8e3d6b287dc8a0cebaf

Analysis

max time kernel
144s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 06:46

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General

Target

2024-02-23_7d539366e236e3b7004e4c2197fe3017_cryptolocker.exe
Size

40KB
MD5

7d539366e236e3b7004e4c2197fe3017
SHA1

0ffed0c14b990e0afeda019392375ef888712939
SHA256

3ae12c717cc2ff12e12cd19f34d0a5b61d35fce7554bd8e3d6b287dc8a0cebaf
SHA512

def2e8d4e8e6dded31df6f08559a04f12610f6081c81bfb1de7bfc2c5c62d4b512e959a935246ec7d8c35e39948a5288b7ad511a157e07009105e8520155e80b
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunrkwIxZnzkAV:btB9g/WItCSsAGjX7e9N0hunrknHiU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002311e-12.dat	CryptoLocker_rule2

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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	gewos.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-23_7d539366e236e3b7004e4c2197fe3017_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4580	gewos.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 3304 wrote to memory of 4580	3304	2024-02-23_7d539366e236e3b7004e4c2197fe3017_cryptolocker.exe	86
PID 3304 wrote to memory of 4580	3304	2024-02-23_7d539366e236e3b7004e4c2197fe3017_cryptolocker.exe	86
PID 3304 wrote to memory of 4580	3304	2024-02-23_7d539366e236e3b7004e4c2197fe3017_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-23_7d539366e236e3b7004e4c2197fe3017_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_7d539366e236e3b7004e4c2197fe3017_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3304
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4580

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\gewos.exe

Filesize
40KB

MD5
f723dda50ffc49735ea0adb1928e9a77

SHA1
d27bd295447e835d84f735b0dcbc5c60e5cde723

SHA256
aaadb8f82d942927ee6d5bed6ab67faf9baaf653030ad94846396b40394e53ed

SHA512
d8f729b898d591fb2b36a81b50a4c4023358af04f75bbef06b592e9f825d8f9a9a337d285c0ca066037dacafaab4bd12a07b7f99b7f25b341dc351d960a2c748

Download Submit
memory/3304-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3304-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3304-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4580-21-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download