8646407a1b15fe08afba2b45205785c98fe432f4c6fc4c78a4f131aab820208c

Analysis

max time kernel
140s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
20/06/2024, 15:03

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-20_8e9cefa6e7da3bb2c19dc1ada1c08777_cryptolocker.exe
Size

63KB
MD5

8e9cefa6e7da3bb2c19dc1ada1c08777
SHA1

9494a250a3df18d7cf342efc4d0ee8c610c452d1
SHA256

8646407a1b15fe08afba2b45205785c98fe432f4c6fc4c78a4f131aab820208c
SHA512

5ab392f765a43fc11451e7b4377353d6cf2cbfa02ee92a01ede157a1f23dd7f7ce1d0cf93f4e3d0f44b7edb8108836721c4d674ea9bfd9e7d7ad49c5d2e3fe40
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnTD:btng54SMLr+/AO/kIhfoKMHda/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023383-12.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-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation	gewos.exe
Key value queried	\REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation	2024-06-20_8e9cefa6e7da3bb2c19dc1ada1c08777_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2584	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 1892 wrote to memory of 2584	1892	2024-06-20_8e9cefa6e7da3bb2c19dc1ada1c08777_cryptolocker.exe	84
PID 1892 wrote to memory of 2584	1892	2024-06-20_8e9cefa6e7da3bb2c19dc1ada1c08777_cryptolocker.exe	84
PID 1892 wrote to memory of 2584	1892	2024-06-20_8e9cefa6e7da3bb2c19dc1ada1c08777_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-06-20_8e9cefa6e7da3bb2c19dc1ada1c08777_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-20_8e9cefa6e7da3bb2c19dc1ada1c08777_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1892
- 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:2584

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
63KB

MD5
d97017f8fcf05eb1e92f120c198d948e

SHA1
42d6c60d74caf4506a1950a5198796dde4d49df5

SHA256
46413ae2535511d09cdfb0f48c521a63795acaa2428aa1e8317e2ed237c47e49

SHA512
00670101082d4afb7dd0ef4488439dfb3412f7c79d31e95ce509f7c2f408965f42e789d036f929e54459436412591d2640e956382fec24f079658f19011baffa

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
03b31f0851a5ea5c6350b9937c145ffb

SHA1
71de6764e56294ca19462db50b257d8e62f7096e

SHA256
cb5f181f574cd0cc40cd8cef9cfc171fff40b8fa74267965fae719363555dcc0

SHA512
8cc3d22b391fb581ee4f94432f93e5cbf166dc80386524316df850b1c9256e758400b8dd2b52e90def28ac7be586f456c8612410ece3fde08c31226ced465516

Download Submit
memory/1892-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1892-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1892-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download