18031f53be21379ff77997b346ff1b6f2378e825d441723150a46e88bfde8a88

Analysis

max time kernel
89s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 12:32

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe
Size

35KB
MD5

622b03e6452238446095906ec7a6d76c
SHA1

1ce4e6d8db531eb649a9ed912e5134ab3b7b2f8c
SHA256

18031f53be21379ff77997b346ff1b6f2378e825d441723150a46e88bfde8a88
SHA512

77c97e292084c9bf18846f09d3f9f6d9da34b9a0dff32e90327f56bc20b1142efa8e0d96302e18b32dd0d6ad8175ef69c342e7b5a0d6f149003361496b4bfe2a
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiA0jgg1831:btB9g/WItCSsAGjX7e9N7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231ec-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1124	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 2112 wrote to memory of 1124	2112	2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe	86
PID 2112 wrote to memory of 1124	2112	2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe	86
PID 2112 wrote to memory of 1124	2112	2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2112
- 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:1124

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
35KB

MD5
9738fb830988dc2459f1626c323378d3

SHA1
1009aa15f2652731b884d733aee00675b5dcd608

SHA256
37f55088cb8d372c72d64f9a44ad139dd4ef6fdd4536fa516769c0a9d0b51052

SHA512
5667392952c8860327a2b11b0e20e7fab9e1c77ed39b7912ae214b22197b90482fabb9b768d89d29f59f95e5df8f5bd2f6187a3bfd7cd01bcf67a33efc7e5419

Download Submit
memory/1124-23-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/2112-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/2112-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/2112-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download