ec91449f92d12d4371307825deaf424187c2de24cefd62a47d06d8b8dfbb7785

Analysis

max time kernel
94s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 03:35

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General

Target

2024-06-02_50c6481a69e56fd39cfee0e9de2383a1_cryptolocker.exe
Size

63KB
MD5

50c6481a69e56fd39cfee0e9de2383a1
SHA1

087622814d1da54592837862b254c2bf05a3f60e
SHA256

ec91449f92d12d4371307825deaf424187c2de24cefd62a47d06d8b8dfbb7785
SHA512

4efebb6d5de3c036ebe12e800d8cbce731fb806185b32bc98759717df51820a202eeb06d35122e1f599c1634dd2b93eff195592591c3d21369a22d53da3f0b10
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnF7HA:btng54SMLr+/AO/kIhfoKMHdaa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023298-12.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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-06-02_50c6481a69e56fd39cfee0e9de2383a1_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1516	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 2792 wrote to memory of 1516	2792	2024-06-02_50c6481a69e56fd39cfee0e9de2383a1_cryptolocker.exe	82
PID 2792 wrote to memory of 1516	2792	2024-06-02_50c6481a69e56fd39cfee0e9de2383a1_cryptolocker.exe	82
PID 2792 wrote to memory of 1516	2792	2024-06-02_50c6481a69e56fd39cfee0e9de2383a1_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-02_50c6481a69e56fd39cfee0e9de2383a1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_50c6481a69e56fd39cfee0e9de2383a1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2792
- 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:1516

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
63KB

MD5
6898c58672ad3107ae0b786c28bb6b0a

SHA1
61b96dd735a82403e99169f26785a7a7fa185df3

SHA256
9b2c04c909318ca4f985f089a89caa03f04bb186bc3273164edb33b9113954e1

SHA512
69d63896670125b83bf19a5ba457b626a94cba4e799ef063153b9cd38b4562a8aaec9b809fa3147665646fa7e94c2a57810cc565f7541bf59ea90d046b66d321

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
a3180438cea79ee24a59fecc80232c78

SHA1
3d3dc00ee06418a919105d46d5fed4b4c390ec25

SHA256
378d3d5d8602514f4d89f017a20dad0b2bf991ac4b6290c043209aa3753becfe

SHA512
b27ad4d3ba9a4f025d438b6963fb937c79a2a9b442de06a94174d74baaf13bf446aaec46ba0decde6d900a95976c4158a75e0339a3d4e9f2388faaae6221d562

Download Submit
memory/1516-25-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2792-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2792-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2792-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download