fd611ad50b7d4951f23cf242c4e78f3834d6366e2aa221d6ca5fc864c3ba88cf

Analysis

max time kernel
138s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14-02-2024 07:41

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General

Target

2024-02-14_69d878dd2fd5db9694cc8167c8ed91cd_cryptolocker.exe
Size

37KB
MD5

69d878dd2fd5db9694cc8167c8ed91cd
SHA1

c714de5a3b10fd17b72614742cc81398334b73cc
SHA256

fd611ad50b7d4951f23cf242c4e78f3834d6366e2aa221d6ca5fc864c3ba88cf
SHA512

7e6437bd9e19a20d82087fc6544ad3522782052a41cf60fa712e691c05dc457f1eeaf15485985393515e73ad3536a81665d2b00339c9d80606b4bb518d72f096
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXuni8LB/:btB9g/WItCSsAGjX7e9N0hunLZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002313a-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-14_69d878dd2fd5db9694cc8167c8ed91cd_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
764	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 1244 wrote to memory of 764	1244	2024-02-14_69d878dd2fd5db9694cc8167c8ed91cd_cryptolocker.exe	84
PID 1244 wrote to memory of 764	1244	2024-02-14_69d878dd2fd5db9694cc8167c8ed91cd_cryptolocker.exe	84
PID 1244 wrote to memory of 764	1244	2024-02-14_69d878dd2fd5db9694cc8167c8ed91cd_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-14_69d878dd2fd5db9694cc8167c8ed91cd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_69d878dd2fd5db9694cc8167c8ed91cd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1244
- 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:764

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
37KB

MD5
30f4c6f97385e2bed0ec62c5a2d232ba

SHA1
f7fa858bf33769201f71327128f48e9748854dea

SHA256
042436b1a6c56cf90589d89e39d7b67261958b7783ce319b08a245873b096e6b

SHA512
77b1577cd329ecbf63df96da15e8a97880eff074fa5b01469167b22d4e0f825af83762f5c90a110d17869172b131831836cd97826fd0cfe2734909e90cf097b2

Download Submit
memory/1244-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1244-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1244-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download