1c33d3c9282a30380824511117679bd45afbb15a6cc0024f8443455ab95ee5de

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 19:29

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General

Target

2024-05-21_569e845a22d1b79a91bdc736bb1d148d_cryptolocker.exe
Size

32KB
MD5

569e845a22d1b79a91bdc736bb1d148d
SHA1

dd6c09be39a8043b0ec7f17cc4be6beae8c4a684
SHA256

1c33d3c9282a30380824511117679bd45afbb15a6cc0024f8443455ab95ee5de
SHA512

35227de177b4d519bfc938a0d3b3a8bd7bebd384151f14a35df29fb8e62e66e6f9b17411d3cc409ea951b6553dbf447ace5741ac5731f84c3c87c1743220438d
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuac:bG74zYcgT/Ekd0ryfj5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4296-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2
behavioral2/memory/4296-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1480-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

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

Processes:

2024-05-21_569e845a22d1b79a91bdc736bb1d148d_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-21_569e845a22d1b79a91bdc736bb1d148d_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

1480 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1480	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-21_569e845a22d1b79a91bdc736bb1d148d_cryptolocker.exe

description	pid	process	target process
PID 4296 wrote to memory of 1480	4296	2024-05-21_569e845a22d1b79a91bdc736bb1d148d_cryptolocker.exe	hasfj.exe
PID 4296 wrote to memory of 1480	4296	2024-05-21_569e845a22d1b79a91bdc736bb1d148d_cryptolocker.exe	hasfj.exe
PID 4296 wrote to memory of 1480	4296	2024-05-21_569e845a22d1b79a91bdc736bb1d148d_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_569e845a22d1b79a91bdc736bb1d148d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_569e845a22d1b79a91bdc736bb1d148d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4296

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:1480

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\hasfj.exe

Filesize
33KB

MD5
fe56ae37b0ed79863e00bf851930d4b6

SHA1
027232991769a451f71744aac4f14ff4af161afe

SHA256
5310a1516f3761f114495700135666c9ba23027ae393181ebbd31890326ebfd6

SHA512
9f4001f3f89050445669ecd93a86b5b50a726c95ec4ce7ac25d2556abec19bdb0abf36f06f7f29027b8d200326cbae68dcdfb0fb2e7052bd78b006969de761d9

Download Submit
memory/1480-25-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/1480-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4296-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4296-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4296-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4296-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4296-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download