4f5a076800906f17308417ffe658acdfc2d378383f65261bd8b79a90e217f268

Analysis

max time kernel
92s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 14:18

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General

Target

2024-02-21_fadfe4e75f2a98ee59da8138c810fabd_cryptolocker.exe
Size

58KB
MD5

fadfe4e75f2a98ee59da8138c810fabd
SHA1

918a075ed64d633e0e25ab42eb500f80080f0e64
SHA256

4f5a076800906f17308417ffe658acdfc2d378383f65261bd8b79a90e217f268
SHA512

79e9ffa27231ccf7b11b236f149b4661f211f342470c5f18c9a81b7ff9ddc7f4c2bb98f7696940c03dff3de7bece7dd983339289ec617decd2364fcebf770eea
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHO:btng54SMLr+/AO/kIhfoKMHdb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231f6-12.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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	2024-02-21_fadfe4e75f2a98ee59da8138c810fabd_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
760	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 3936 wrote to memory of 760	3936	2024-02-21_fadfe4e75f2a98ee59da8138c810fabd_cryptolocker.exe	87
PID 3936 wrote to memory of 760	3936	2024-02-21_fadfe4e75f2a98ee59da8138c810fabd_cryptolocker.exe	87
PID 3936 wrote to memory of 760	3936	2024-02-21_fadfe4e75f2a98ee59da8138c810fabd_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-21_fadfe4e75f2a98ee59da8138c810fabd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_fadfe4e75f2a98ee59da8138c810fabd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3936
- 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:760

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
58KB

MD5
9c084a2caa9fac08a777d71b9a049916

SHA1
3992ab7c655e8630ceb6c8d22d91b804fae3586e

SHA256
c44f57d2ed684f4759684482dd400d2eb7703989adbee10381454e7105f7fef6

SHA512
75f34b5eb4acea4c24f8ae2748d71221bb8f9271431ce295000b0152bee27b725e48d8174e2de12ae3467d488cb1a8b810b31805265bb4894732826fbccabdee

Download Submit
memory/760-21-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3936-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3936-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3936-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download