a7593ebd5e10335d8b85c6365dc2a02970537ef04631473bc30273bdf2f197ac

Analysis

max time kernel
147s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 11:27

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General

Target

2024-02-03_4d826462b8df27783e3cc9254066a50a_cryptolocker.exe
Size

37KB
MD5

4d826462b8df27783e3cc9254066a50a
SHA1

810565651577821055e37a78a3195aff8c613e0c
SHA256

a7593ebd5e10335d8b85c6365dc2a02970537ef04631473bc30273bdf2f197ac
SHA512

d236db37070de266128be21bb84d6c8175d331c2759ffaafd25541fcb1e2da6c4e0182183a6c056fec9b8c0a66e16d9f4ffde5d5e3dd5d5e157dc20321ba9c53
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx3O4:bxNrC7kYo1Fxf3s06gY4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023133-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-03_4d826462b8df27783e3cc9254066a50a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
920	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 3252 wrote to memory of 920	3252	2024-02-03_4d826462b8df27783e3cc9254066a50a_cryptolocker.exe	84
PID 3252 wrote to memory of 920	3252	2024-02-03_4d826462b8df27783e3cc9254066a50a_cryptolocker.exe	84
PID 3252 wrote to memory of 920	3252	2024-02-03_4d826462b8df27783e3cc9254066a50a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-03_4d826462b8df27783e3cc9254066a50a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_4d826462b8df27783e3cc9254066a50a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3252
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:920

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
37KB

MD5
1efaa403f109be3736f33fd92c49bf62

SHA1
536a871e0c8b7f4e19392dcdb97f8d720ad405d8

SHA256
5de64a9daeb761ff29042408bbb166318945fcfce83f2dc7914e2da37639d7f4

SHA512
76f9f543ceaab5807735bce3dbd1a684ecdff9826db176675eba49bb0d84c4df5db42f08f7feea56fab96950b6cffcf6d5ec563d0ef02af70abbe9b381a8e005

Download Submit
memory/920-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/920-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3252-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3252-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3252-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download