0a42ff1141bbe062c8b74cd6d07f8e72097a72d32ac83d370cfa228cbd8f44b5

Analysis

max time kernel
89s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2024 15:25

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General

Target

2024-01-25_18bf989c2b905be2a69a7582984afa05_cryptolocker.exe
Size

35KB
MD5

18bf989c2b905be2a69a7582984afa05
SHA1

f78d92e940a80deaa7606c5b8891c767df5ba33f
SHA256

0a42ff1141bbe062c8b74cd6d07f8e72097a72d32ac83d370cfa228cbd8f44b5
SHA512

cb011042b9440529b34912b38cc5ef5dca616cb7a60ada6ae269f32fe22950d082fb8e56b651cee9e31d62a57d623cfef8d0d976b188d1749c2fcea379836721
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRY:btB9g/WItCSsAGjX7e9N0hunRY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f5-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-25_18bf989c2b905be2a69a7582984afa05_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2224	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 4256 wrote to memory of 2224	4256	2024-01-25_18bf989c2b905be2a69a7582984afa05_cryptolocker.exe	87
PID 4256 wrote to memory of 2224	4256	2024-01-25_18bf989c2b905be2a69a7582984afa05_cryptolocker.exe	87
PID 4256 wrote to memory of 2224	4256	2024-01-25_18bf989c2b905be2a69a7582984afa05_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-25_18bf989c2b905be2a69a7582984afa05_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_18bf989c2b905be2a69a7582984afa05_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4256
- 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:2224

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
35KB

MD5
aa35b1103fad79de300441404e41bf17

SHA1
218c59a0d95cc5717e59bf06c428d896039aa5d7

SHA256
6d87705aaf72dfaa8d15337c1242f1b8860b230993eecbb0fb65649929707efb

SHA512
cb1b9476fffe153cebaa9c3d877dd730dee1f41475b98a5abd8bcffa1f6e69739eb97beb0b2c39d38cda252f8d6e0be5a1fb72c26e1dc6074424a762578ef539

Download Submit
memory/2224-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4256-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4256-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4256-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download