3c0ee3505c17a7021ffdf287d6088161d23b1c9bcecde1f8ee8647c76c58981e

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:44

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General

Target

2024-05-22_ad45c0e242459a2e68d3e8565b6fbfff_cryptolocker.exe
Size

33KB
MD5

ad45c0e242459a2e68d3e8565b6fbfff
SHA1

d1ce40fd8a86cb1a785450ace07d373bb8358947
SHA256

3c0ee3505c17a7021ffdf287d6088161d23b1c9bcecde1f8ee8647c76c58981e
SHA512

fb61c743402f844c0a05f1bc428a5be71a7d527a99e9f7dc8da55d50c2d94d7bd68f74734dfb6acfb97c59b84d3ba2cd155fb3e55e9bae7b79ee4a2527e99a67
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGLZ9t:bG74zYcgT/Ekd0ryfjgjt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2352-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2
behavioral2/memory/2352-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2828-26-0x0000000008000000-0x000000000800A000-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:

2024-05-22_ad45c0e242459a2e68d3e8565b6fbfff_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-22_ad45c0e242459a2e68d3e8565b6fbfff_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

2828 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2828	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_ad45c0e242459a2e68d3e8565b6fbfff_cryptolocker.exe

description	pid	process	target process
PID 2352 wrote to memory of 2828	2352	2024-05-22_ad45c0e242459a2e68d3e8565b6fbfff_cryptolocker.exe	hasfj.exe
PID 2352 wrote to memory of 2828	2352	2024-05-22_ad45c0e242459a2e68d3e8565b6fbfff_cryptolocker.exe	hasfj.exe
PID 2352 wrote to memory of 2828	2352	2024-05-22_ad45c0e242459a2e68d3e8565b6fbfff_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_ad45c0e242459a2e68d3e8565b6fbfff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_ad45c0e242459a2e68d3e8565b6fbfff_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2352

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:2828

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
9b676b60de0cee0f72eaeefaea3aa5d2

SHA1
28fbe01a6b410c994ca3982d2c9679ac0c4f423b

SHA256
32badf8a520b99c940b453320b42a541c0cd2396ce8a5af97f0489b970048c61

SHA512
f572f0421e84a11e68608a268204ac6af1544d0ce55b1e7640ceb280cd3bc302a61b834f5157e4c42abe75b7516cce6a032e778b62dd858d7a05448fb7f72987

Download Submit
memory/2352-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2352-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2352-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2352-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2352-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2828-19-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2828-25-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/2828-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download