65a5ec5afa440563a609ea78d8debb7b521d9a97e1f4633a828f5a942b28ffde

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/06/2024, 15:50

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General

Target

2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe
Size

32KB
MD5

4d38a3673f6f736f92d1f6726226b661
SHA1

c351a0dfdb17c4adbbce90a3247386cbc7ed10aa
SHA256

65a5ec5afa440563a609ea78d8debb7b521d9a97e1f4633a828f5a942b28ffde
SHA512

bb10e4f9bcb5d6a71eaf7fe852c0fa3156e4b499864279a9c37ff13cf6f1eaadbb7350fc96e9e3d125fd9f6286ff7527201a945a15e89f1c93c4bf7d706afb29
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGOo9GcPUL3:bG74zYcgT/Ekd0ryfjoGcPo3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/3024-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000014c67-11.dat	CryptoLocker_rule2
behavioral1/memory/2620-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3024-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2620-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2620	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
3024	2024-06-10_4d38a3673f6f736f92d1f6726226b661_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 3024 wrote to memory of 2620	3024	2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe	28
PID 3024 wrote to memory of 2620	3024	2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe	28
PID 3024 wrote to memory of 2620	3024	2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe	28
PID 3024 wrote to memory of 2620	3024	2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2620

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
33KB

MD5
0e58aa178f82be8c0a542ab58a7f10c5

SHA1
a27a54617859cc48d358cf75d2303090d9e475e5

SHA256
c79c75d5a5046b1d9b0e70eab3cb7f2b2192c02e0d6ba3bb7df146e4105a548c

SHA512
9ae7c7c42410743eeae9f32583410f340d68d5f4d8ce11bec2cecca15d83f36e76b43b66a96a591c7ab55efd7c6a0fca158219be5ee834dd3818e157d479b80d

Download Submit
memory/2620-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2620-18-0x0000000001BC0000-0x0000000001BC6000-memory.dmp

Filesize
24KB

Download
memory/2620-25-0x0000000001BA0000-0x0000000001BA6000-memory.dmp

Filesize
24KB

Download
memory/2620-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3024-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3024-2-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/3024-9-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/3024-1-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/3024-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download