0f3af209637c197bd42a75032936773f3ef6b67f699ded4779dde25131d6724a

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 11:41

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General

Target

2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe
Size

30KB
MD5

5c46af4640394a086fab8153edc0e5a9
SHA1

a7eb821436b03767b6201d19a2412871e6723c83
SHA256

0f3af209637c197bd42a75032936773f3ef6b67f699ded4779dde25131d6724a
SHA512

4c5e66b719b0558de23ff08aa10ff2ca25df739423f8ebbbb57600a4c81017078a33eafa8062960e23e9b126429d348e9ab890de1b5c0cf8305ca716d0f40fc3
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGB:bG74zYcgT/Ekd0ryfjo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2792-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e970-13.dat	CryptoLocker_rule2
behavioral2/memory/2792-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5092-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5092-27-0x0000000008000000-0x000000000800A000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5092	hasfj.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 2792 wrote to memory of 5092	2792	2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe	89
PID 2792 wrote to memory of 5092	2792	2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe	89
PID 2792 wrote to memory of 5092	2792	2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:5092

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

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Downloads

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

Filesize
30KB

MD5
bbb6ab80a524a164ff81555c441e97af

SHA1
296f033ae0a944e110e0f4d9b06d96b2b9b8ac4f

SHA256
0e761df982d2e65573f3d1cd9b6910c7d8ec8cb5c91d273b3ed79b67a14e4a6a

SHA512
d682a0a42dd1926c62233c4e3ec1f25f2b06cc4f15449af30d3441cb7de46e72ba7aaeaf1f3126d21adcdde5e737f637efc3d69cbb59f0e7cfc337336e9e72b2

Download Submit
memory/2792-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2792-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2792-2-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2792-3-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/2792-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/5092-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/5092-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/5092-21-0x0000000001FA0000-0x0000000001FA6000-memory.dmp

Filesize
24KB

Download
memory/5092-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download