23a97b2f79fe112671a156f70e8cec57e5f606a285012b5e62c46e8b7d20df25

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/03/2024, 15:49

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General

Target

2024-03-09_f8a7835cf4b9df490071cf1d10640e42_cryptolocker.exe
Size

38KB
MD5

f8a7835cf4b9df490071cf1d10640e42
SHA1

802af259a9a311456559e65fe64048fc947c76b2
SHA256

23a97b2f79fe112671a156f70e8cec57e5f606a285012b5e62c46e8b7d20df25
SHA512

01b5c9d6590c48bd484ea9126f3e4066d3e684e0ab4a54a3bc65b7842b79e0058edfc4e11bdd427199109272ccf11ddeb38eab90184f891e6bc64fbe5752f01b
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHu8KQ:X6QFElP6n+gJQMOtEvwDpjBmzDkzQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023207-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023207-12.dat	CryptoLocker_set1

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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-09_f8a7835cf4b9df490071cf1d10640e42_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4352	asih.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 812 wrote to memory of 4352	812	2024-03-09_f8a7835cf4b9df490071cf1d10640e42_cryptolocker.exe	91
PID 812 wrote to memory of 4352	812	2024-03-09_f8a7835cf4b9df490071cf1d10640e42_cryptolocker.exe	91
PID 812 wrote to memory of 4352	812	2024-03-09_f8a7835cf4b9df490071cf1d10640e42_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-09_f8a7835cf4b9df490071cf1d10640e42_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_f8a7835cf4b9df490071cf1d10640e42_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:812
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4352

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\asih.exe

Filesize
39KB

MD5
b181bda3dff3534af703ca587c4e4290

SHA1
78212378f4ac15c96537aa7468c2abd7518b66fc

SHA256
16963d49373ad0c10bad5990343ad702a7bc6e7c7d0858da2664b7ef6f9adf8c

SHA512
e2b05e36a77d0dac3fd1e7f2a5d0dfaae0be7c3d66e9ff53aa9d54b7e22cb37416dbc88e966ef4994a3225f86ba4e9704a899081d717de76171d8f8f5d74121f

Download Submit
memory/812-0-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/812-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/812-2-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4352-17-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/4352-20-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download