4f6d06e1043f2be3f1b44341974beff80e9e738aa107e6aa166675ba9873d029

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 01:45

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General

Target

2024-02-03_139db184c30ae8e55e9db0a287ffd57e_cryptolocker.exe
Size

41KB
MD5

139db184c30ae8e55e9db0a287ffd57e
SHA1

25aea5d48ad292a380d445e1e8fb4697cd9ee1bf
SHA256

4f6d06e1043f2be3f1b44341974beff80e9e738aa107e6aa166675ba9873d029
SHA512

6135ecd3857bc4a218fe13205a7cee8433a5ad47fe155da0ba0ed91e629f15811a0f24c77b7756381dcaa5369926a134c570a39b2c0c6f0cd63598248291fdd7
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFqU:bxNrC7kYo1Fxf3s05rwxbFd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231fc-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-03_139db184c30ae8e55e9db0a287ffd57e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
872	pissa.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 4608 wrote to memory of 872	4608	2024-02-03_139db184c30ae8e55e9db0a287ffd57e_cryptolocker.exe	88
PID 4608 wrote to memory of 872	4608	2024-02-03_139db184c30ae8e55e9db0a287ffd57e_cryptolocker.exe	88
PID 4608 wrote to memory of 872	4608	2024-02-03_139db184c30ae8e55e9db0a287ffd57e_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-03_139db184c30ae8e55e9db0a287ffd57e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_139db184c30ae8e55e9db0a287ffd57e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4608
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:872

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\pissa.exe

Filesize
42KB

MD5
1a26366c701f9ae48d281fa3a0a92973

SHA1
c70c1fb7cde525e78243372b4de96e8071ed5b83

SHA256
d2ee333cde22260b7fb88c181ea6575b72773335667afb75d73e31a4210a3a26

SHA512
1b20b37dae6e75a1193b0632eebcdcfa803053171840ed0f1bc38beb241cf7f1f4656e57dd458e183e4f2ac0674aa379101cb5b70bec02db1ccb301bb9f27b0e

Download Submit
memory/872-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/872-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4608-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4608-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4608-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download