c8ac1c9d7a9c2f38b835c1a6f802ec64b3dd24118b90fa2a3cae28f0de4a44aa

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
21-04-2024 03:35

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General

Target

2024-04-21_1afc95043205720a1caf046e543538ce_cryptolocker.exe
Size

35KB
MD5

1afc95043205720a1caf046e543538ce
SHA1

6771160edacd56c8f814fbb6893c7540fe890c43
SHA256

c8ac1c9d7a9c2f38b835c1a6f802ec64b3dd24118b90fa2a3cae28f0de4a44aa
SHA512

48047a254be8a76410d96629d969badb8bf0d0600542e25004b21147dfce44e79aba6b4481b9c945719a37012ee09a97ccef1f9dd237f6ef2c8831045d943883
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0q0:btB9g/WItCSsAGjX7r3BT0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-21_1afc95043205720a1caf046e543538ce_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1400	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 1912 wrote to memory of 1400	1912	2024-04-21_1afc95043205720a1caf046e543538ce_cryptolocker.exe	85
PID 1912 wrote to memory of 1400	1912	2024-04-21_1afc95043205720a1caf046e543538ce_cryptolocker.exe	85
PID 1912 wrote to memory of 1400	1912	2024-04-21_1afc95043205720a1caf046e543538ce_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-21_1afc95043205720a1caf046e543538ce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_1afc95043205720a1caf046e543538ce_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1912
- 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:1400

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
f04822315f8e72313a5d3d509bb384ea

SHA1
f1611ab85dea22c3742d4297b326fdc6a4659e17

SHA256
a8010cbabd4e3ad051c339c1ddedebf746fbcbffddce006207da0450e706723b

SHA512
615e7a251e1e0de8bbfa47ba9df592a9a0d013c8387055d0c926271f9de95aad3c58ee6bb724474adf9a81cfe3d79b7078a616ba1b0de3ebea148672041b565b

Download Submit
memory/1400-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1912-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/1912-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/1912-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download