0f3af209637c197bd42a75032936773f3ef6b67f699ded4779dde25131d6724a

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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
behavioral1/memory/2752-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a0000000122b8-11.dat	CryptoLocker_rule2
behavioral1/memory/2752-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1728-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1728-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1728	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2752	2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2752 wrote to memory of 1728	2752	2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe	28
PID 2752 wrote to memory of 1728	2752	2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe	28
PID 2752 wrote to memory of 1728	2752	2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe	28
PID 2752 wrote to memory of 1728	2752	2024-04-15_5c46af4640394a086fab8153edc0e5a9_cryptolocker.exe	28

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⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2752
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
30KB

MD5
bbb6ab80a524a164ff81555c441e97af

SHA1
296f033ae0a944e110e0f4d9b06d96b2b9b8ac4f

SHA256
0e761df982d2e65573f3d1cd9b6910c7d8ec8cb5c91d273b3ed79b67a14e4a6a

SHA512
d682a0a42dd1926c62233c4e3ec1f25f2b06cc4f15449af30d3441cb7de46e72ba7aaeaf1f3126d21adcdde5e737f637efc3d69cbb59f0e7cfc337336e9e72b2

Download Submit
memory/1728-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1728-18-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/1728-25-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1728-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2752-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2752-1-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2752-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2752-9-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2752-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download