75f61bd4b30bc45d7f4cd3047744be5587572c84f4760cefe96d61323e163356

Analysis

max time kernel
148s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2024 03:33

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General

Target

2024-05-09_3852adf14bc45b21708ab99508391548_cryptolocker.exe
Size

36KB
MD5

3852adf14bc45b21708ab99508391548
SHA1

efc17fe9895cff011f305ef0899dbc15a6ad5050
SHA256

75f61bd4b30bc45d7f4cd3047744be5587572c84f4760cefe96d61323e163356
SHA512

b1432e09af1d888f729342c36bfed1aed4a488c83c204727afe7e5c9a8e7268e20e65b10212cc1ebe168a9803dceb0750cab5a8591857968f324d8a52e810eba
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0q8bKW0E:btB9g/WItCSsAGjX7r3BTAKWN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002328e-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-09_3852adf14bc45b21708ab99508391548_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4764	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 2412 wrote to memory of 4764	2412	2024-05-09_3852adf14bc45b21708ab99508391548_cryptolocker.exe	81
PID 2412 wrote to memory of 4764	2412	2024-05-09_3852adf14bc45b21708ab99508391548_cryptolocker.exe	81
PID 2412 wrote to memory of 4764	2412	2024-05-09_3852adf14bc45b21708ab99508391548_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-09_3852adf14bc45b21708ab99508391548_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_3852adf14bc45b21708ab99508391548_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  PID:4764

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
36KB

MD5
2acbfbc7a6b8bdf2e6cb116222df035f

SHA1
4b1ab047e589ab25497afcff43d051b25537510d

SHA256
5435d08891d42c49cd6a1b948c29ab4a804a2226dfc2e7ce4eebaadd770a4a74

SHA512
d0b1b981f4830b8a3b0ad3c1ac32479a29b379a7d84c2b1da2517f13043a117408927eb5373afee90ebc8ac281eda493754620be6cb93030c3bef8e8446dbf35

Download Submit
memory/2412-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2412-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2412-8-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4764-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download