d18952dd4b556ed95d95f3450608dd0d19b58ad813c4fc858fa564218325f7f7

Analysis

max time kernel
148s
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
09/05/2024, 14:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-09_7c226e0ea218645ec7b7c5522621cc96_cryptolocker.exe
Size

47KB
MD5

7c226e0ea218645ec7b7c5522621cc96
SHA1

a6ea6cc02121e62cf3bf32ff96f4843d6b490483
SHA256

d18952dd4b556ed95d95f3450608dd0d19b58ad813c4fc858fa564218325f7f7
SHA512

e83ae6825bca47998ede233a5e3ce25f12a2dbbdd09fde1bbafd7c06bf583a9561084d5cd2f8b7f290710c0ed5f52f31cc220d800d734d4b22ac7dc2e329cfea
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoL5H:qmbhXDmjr5MOtEvwDpj5cDtKkQZQT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2352-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023284-15.dat	CryptoLocker_rule2
behavioral2/memory/4536-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2352-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4536-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4536-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2352-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4536-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2352-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0006000000023284-15.dat	UPX
behavioral2/memory/4536-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2352-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4536-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-09_7c226e0ea218645ec7b7c5522621cc96_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4536	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 2352 wrote to memory of 4536	2352	2024-05-09_7c226e0ea218645ec7b7c5522621cc96_cryptolocker.exe	82
PID 2352 wrote to memory of 4536	2352	2024-05-09_7c226e0ea218645ec7b7c5522621cc96_cryptolocker.exe	82
PID 2352 wrote to memory of 4536	2352	2024-05-09_7c226e0ea218645ec7b7c5522621cc96_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-09_7c226e0ea218645ec7b7c5522621cc96_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_7c226e0ea218645ec7b7c5522621cc96_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4536

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
47KB

MD5
4d52657f4de0f47b66865ce89de68f52

SHA1
e3fe54942a9ea927612f4c40eaea8fef9a238eea

SHA256
7fbf2729240f22ba55ecf313d683e381b98875273b33c01f9e3d6b4c733f37b3

SHA512
4284b21d386f886dd2344f768500b65cb04c14006495e6506e2df95046cc04346c0bb6c8b1242cc231a2920c49fc6323398abc5d22781773faa7c753c2cebc64

Download Submit
memory/2352-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2352-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2352-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2352-9-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2352-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4536-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4536-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4536-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4536-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download