8a39f08aeb10508fe21467c20b0f821624c9301c2ecfa2dcde42d3cbc47877d3

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
30-05-2024 21:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-30_a7d6d9b286c087af05611656b3d62441_cryptolocker.exe
Size

51KB
MD5

a7d6d9b286c087af05611656b3d62441
SHA1

3e8ad9ca979c9b38b201b3bdd1c8a774a5fbdaa6
SHA256

8a39f08aeb10508fe21467c20b0f821624c9301c2ecfa2dcde42d3cbc47877d3
SHA512

dc0c45dfb385e85264ad4975b1b996994d6d82884c5b36cf585891320a5de7efda8f8650221e4e25946701c2268c20a666c443760b002c7dc416e74864a4165d
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZUM:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLqM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000002340f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000002340f-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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-30_a7d6d9b286c087af05611656b3d62441_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
876	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 636 wrote to memory of 876	636	2024-05-30_a7d6d9b286c087af05611656b3d62441_cryptolocker.exe	81
PID 636 wrote to memory of 876	636	2024-05-30_a7d6d9b286c087af05611656b3d62441_cryptolocker.exe	81
PID 636 wrote to memory of 876	636	2024-05-30_a7d6d9b286c087af05611656b3d62441_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-30_a7d6d9b286c087af05611656b3d62441_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_a7d6d9b286c087af05611656b3d62441_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:636
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:876

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
51KB

MD5
f53b92fc788790a8837fe373d437bb75

SHA1
65ab08d465de38a57eb7fc14250b810cd1ff606f

SHA256
c50e21883f9525441ba7013795a2e0b48e2d8ed5d9e6d10166d0d10705356666

SHA512
d4fa745ca4528c7d488e183454896e7c59543c7bae085c6996cd57f8408473f3e8d400f85566830aad666c0d0fb4e30019333eda796886d04f6c922891e66235

Download Submit
memory/636-0-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/636-1-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/636-8-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/876-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/876-23-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download