b91e0c72c0a536e9e79d43cbd7363e1735b650840f03867e67cc221094031cc9

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
27/03/2024, 08:37

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General

Target

2024-03-27_9ac04983d0155691b70a7bc5ff32901e_cryptolocker.exe
Size

45KB
MD5

9ac04983d0155691b70a7bc5ff32901e
SHA1

7438f7f96cdcff1dfc3f827345786aa4ce2fea15
SHA256

b91e0c72c0a536e9e79d43cbd7363e1735b650840f03867e67cc221094031cc9
SHA512

82c02d17b756537cedf6f4d2196fe1342a88064e14b4df3ba2703951a2e6caf092539ed4000495401e2124cd4907c2ededd6d764044961da8d9548314747393f
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFp13/7xlNXn:bxNrC7kYo1Fxf3s05rwxbF73NlF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231d6-12.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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-27_9ac04983d0155691b70a7bc5ff32901e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5712	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 5164 wrote to memory of 5712	5164	2024-03-27_9ac04983d0155691b70a7bc5ff32901e_cryptolocker.exe	88
PID 5164 wrote to memory of 5712	5164	2024-03-27_9ac04983d0155691b70a7bc5ff32901e_cryptolocker.exe	88
PID 5164 wrote to memory of 5712	5164	2024-03-27_9ac04983d0155691b70a7bc5ff32901e_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-27_9ac04983d0155691b70a7bc5ff32901e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_9ac04983d0155691b70a7bc5ff32901e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5164
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:5712

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
45KB

MD5
cbd87ca6d8c1ff2279822bb78e699980

SHA1
10050e0c2d8dc5ea50bb970a4db334ea41d9c4af

SHA256
6989b9fe6c6bb335dde00bfd254bdf4f2afb3dfa2fb2efffcb87c8dc8c11dca2

SHA512
511091def2e35725cd974578fde35ee9315ff97a294d7fd9988afc7350fa78a6dbdba2ead2d08d170f216a7d44d8f244ad731c7706819acb66b84b49fd44c9af

Download Submit
memory/5164-0-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/5164-1-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/5164-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/5712-17-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/5712-19-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download