d3d4dc68816df286de6649f3b0826ec0516893b48de20b9494a32bcc4dddbc43

Analysis

max time kernel
94s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/04/2024, 18:28

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General

Target

2024-04-08_376ad33661726c55a662a8ea646c5283_cryptolocker.exe
Size

42KB
MD5

376ad33661726c55a662a8ea646c5283
SHA1

1ccc8e457d535a397bee249d702f65cced1aff46
SHA256

d3d4dc68816df286de6649f3b0826ec0516893b48de20b9494a32bcc4dddbc43
SHA512

17c524e0f70ba377119f920d9ce704038f8cc444d630fdf17262c224a9b29216692ef495423220af2e55550c2d991b13f4a7fbe42401b87299e1827ba48d13b0
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunrkwIxZv7cUI:btB9g/WItCSsAGjX7e9N0hunrknv7nWl

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023038-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-04-08_376ad33661726c55a662a8ea646c5283_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2604	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 4024 wrote to memory of 2604	4024	2024-04-08_376ad33661726c55a662a8ea646c5283_cryptolocker.exe	87
PID 4024 wrote to memory of 2604	4024	2024-04-08_376ad33661726c55a662a8ea646c5283_cryptolocker.exe	87
PID 4024 wrote to memory of 2604	4024	2024-04-08_376ad33661726c55a662a8ea646c5283_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-08_376ad33661726c55a662a8ea646c5283_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_376ad33661726c55a662a8ea646c5283_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4024
- 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:2604

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
42KB

MD5
5ff9995aa9a935f76a21a3889a74ae48

SHA1
e44441b604360c660edb2e6f67f521b81f80cfb2

SHA256
39a177f0c59188551f2012c46392d7730774d7c9cb9000f16cc0c40cfcc60f54

SHA512
e6496871437982c0f60bdf77b3b45768502513058e6542dbf5070a05e3361de83cf46294b13d4bbd2fa6f4dc0eb7012b2d2e8fd3a4ebb358a3852549622e7909

Download Submit
memory/2604-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4024-0-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/4024-1-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/4024-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download