5dd5fce57a50826618d6d0d0dd09001f010753447cf1edaaec79207a7b729700

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 12:10

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General

Target

2024-02-14_a1ba080b8025d9373963cbe3b5fcfad7_cryptolocker.exe
Size

93KB
MD5

a1ba080b8025d9373963cbe3b5fcfad7
SHA1

6408c33aa87130089f8e49312041a0e627a23bd7
SHA256

5dd5fce57a50826618d6d0d0dd09001f010753447cf1edaaec79207a7b729700
SHA512

2f1ce37adc825a551c100a7d90784fbf0a925c7d7bef3e809fd7d1d71c83d5e17f0ec705e049417b53e6cb4020df6b1185871e4034c8fbef724bb78d0186b7b3
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCCA:26a+2OtEvwDpjtzO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231e0-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231e0-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-14_a1ba080b8025d9373963cbe3b5fcfad7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	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 628 wrote to memory of 2820	628	2024-02-14_a1ba080b8025d9373963cbe3b5fcfad7_cryptolocker.exe	83
PID 628 wrote to memory of 2820	628	2024-02-14_a1ba080b8025d9373963cbe3b5fcfad7_cryptolocker.exe	83
PID 628 wrote to memory of 2820	628	2024-02-14_a1ba080b8025d9373963cbe3b5fcfad7_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-14_a1ba080b8025d9373963cbe3b5fcfad7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_a1ba080b8025d9373963cbe3b5fcfad7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2820

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
94KB

MD5
e8ad7707afe9f936d15c63a8bd021a1f

SHA1
31e23cc3a222cecf1829ef1fe8c8b437b45365b3

SHA256
fcc6d345344867a28a1c6805731d6e745041467864e1db7977fbc9969b13a1bd

SHA512
698145599fd0cfab622c4f6ecc1466896043bb512dcfd21ebd2773952511cffed9a685f5de4ce0051aec4aae46851bf17cb7d13296556c251b0a95c02b727008

Download Submit
memory/628-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/628-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/628-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2820-18-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2820-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download