5ffbb92a1ee1d8d4723717d78ebb42592ad7257b39a59af1aa058914bee01131

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 10:35

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General

Target

2024-02-28_46e8b9cbd003034ea761e5090237a7a3_cryptolocker.exe
Size

36KB
MD5

46e8b9cbd003034ea761e5090237a7a3
SHA1

066b2f736d7bdad35fd9dbd0e6f4bdedf4ac52b8
SHA256

5ffbb92a1ee1d8d4723717d78ebb42592ad7257b39a59af1aa058914bee01131
SHA512

938154ecef08f267f8d4fc78d8f13d9233462cdc6c3974761ca399df89e836e6f3955173a30ecb20b0f4c2ee9261d38e9d6eeb5480d04ef0504098587923407c
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JE5R:bxNrC7kYo1Fxf3s065R

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-02-28_46e8b9cbd003034ea761e5090237a7a3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4048	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 3060 wrote to memory of 4048	3060	2024-02-28_46e8b9cbd003034ea761e5090237a7a3_cryptolocker.exe	90
PID 3060 wrote to memory of 4048	3060	2024-02-28_46e8b9cbd003034ea761e5090237a7a3_cryptolocker.exe	90
PID 3060 wrote to memory of 4048	3060	2024-02-28_46e8b9cbd003034ea761e5090237a7a3_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-28_46e8b9cbd003034ea761e5090237a7a3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_46e8b9cbd003034ea761e5090237a7a3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:4048

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
36KB

MD5
0f5d48d46e2bfc6d442f466a5479d4cc

SHA1
a6f8732fc6c507d3f2f0960eb6578b3ff97b3451

SHA256
30197a802074bcd310abe89e8b018ad5bb1075458248667d0122122b3c5e7dd0

SHA512
7d6ec4a9c17b296539c5b2694231e535f0caedb8d6b884fd97e68ed96b99df1e1a70f8679f919c69bdc80ef7af0482cc728fe0e57688849819c3e33a6c878c1d

Download Submit
memory/3060-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3060-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3060-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4048-21-0x0000000000780000-0x0000000000786000-memory.dmp

Filesize
24KB

Download