3277b967f0b0eadc77a7c8ff6f5c056676cf5e4ed321f38856c795f99f617f36

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 21:24

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General

Target

2024-05-21_5f23533d24f355dcc246936c097894cd_cryptolocker.exe
Size

97KB
MD5

5f23533d24f355dcc246936c097894cd
SHA1

3306f0bdfba587858fb3ca15f28ff7900ff9677c
SHA256

3277b967f0b0eadc77a7c8ff6f5c056676cf5e4ed321f38856c795f99f617f36
SHA512

4be06d45e459cad4012fe8ba34afd7e86284646afe02ee38c2fc139be6183bc6d8c7b09fe11c670d5377239ba566bd25cb96404cee37e62e54933de497fea417
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp0Wl:V6a+pOtEvwDpjtzC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002328e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-21_5f23533d24f355dcc246936c097894cd_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4788	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 744 wrote to memory of 4788	744	2024-05-21_5f23533d24f355dcc246936c097894cd_cryptolocker.exe	85
PID 744 wrote to memory of 4788	744	2024-05-21_5f23533d24f355dcc246936c097894cd_cryptolocker.exe	85
PID 744 wrote to memory of 4788	744	2024-05-21_5f23533d24f355dcc246936c097894cd_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-21_5f23533d24f355dcc246936c097894cd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_5f23533d24f355dcc246936c097894cd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:744
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4788

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
97KB

MD5
42402e8bd425e9a0cf1b233d5b2ab9ee

SHA1
9aa0f4a48ad11af328f4dae74402b06c43772686

SHA256
9f2bd450ef96f2f1fe72d88b5b3455eb158cb7fc12d0580aa42c0f7553c80204

SHA512
f9d2f1db0c52dfee17968b6ebc05784a464e15e55995d9f6a7aa1e88749a3beb02717eab1f90be8e7c5784d389ad95bd32bb9d8ba8f5b1e7ae0df7fb06462393

Download Submit
memory/744-0-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/744-1-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/744-8-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4788-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4788-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download