5549336d56bf2447f54f805da2332f3c7025d51e85b0fa94dec3344a774d5845

Analysis

max time kernel
88s
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
03/02/2024, 03:51

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General

Target

2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe
Size

36KB
MD5

23a20cb6979845d55614ad98e60b39c0
SHA1

d0d64e255ad929ee755e67ad26ec78cdff98e3c1
SHA256

5549336d56bf2447f54f805da2332f3c7025d51e85b0fa94dec3344a774d5845
SHA512

41aa4e94481b43e0126acf4ff7358db491c358b3d6d25836815f0dada4eaa9403079bedbfab318b97f5c36713b40c670fb5b541eda754f1ded205bf187447193
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXuni8v:btB9g/WItCSsAGjX7e9N0hunv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023227-12.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	2024-02-03_23a20cb6979845d55614ad98e60b39c0_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
4456	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 1272 wrote to memory of 4456	1272	2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe	89
PID 1272 wrote to memory of 4456	1272	2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe	89
PID 1272 wrote to memory of 4456	1272	2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1272
- 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:4456

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
37KB

MD5
f683ed827ecb18903056599edd27e009

SHA1
66585bfdd49bfdac61df040f912726a86c31a3e5

SHA256
2ffd26a1761f9f9b05920eedb59b07812455fd15e428641ae68cc5a929f90dab

SHA512
5fac3bcf7250f49ac580a67dd4328d778c187974cc80485d967e52b2b641e8e55493a4b881e4a28c77ce16f0e78d77a95bdcdd737930330d10271ea53eb276a3

Download Submit
memory/1272-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1272-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1272-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4456-21-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download