6739712535da91a34b2b74051456aca7b8a4fae49fb0d470929c33ea3956a807

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
17/04/2024, 06:33

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General

Target

2024-04-17_c42e93120bc9bdfbb5d9aed4f7554337_cryptolocker.exe
Size

30KB
MD5

c42e93120bc9bdfbb5d9aed4f7554337
SHA1

3c9f63470779fb0b751c867d5712ae4e05e3e639
SHA256

6739712535da91a34b2b74051456aca7b8a4fae49fb0d470929c33ea3956a807
SHA512

6af31ab0d1bb3a8beaa376f9c5cfc0ea3f8e2687f5822a919b3424b7d4ffd14cfc6c4dea03f509d26b6056d88bfe82521630e1a63d1f0de285625e9e13057fc2
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGf:bG74zYcgT/Ekd0ryfjS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1740-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012267-11.dat	CryptoLocker_rule2
behavioral1/memory/1740-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2544-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2544-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2544	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1740	2024-04-17_c42e93120bc9bdfbb5d9aed4f7554337_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 1740 wrote to memory of 2544	1740	2024-04-17_c42e93120bc9bdfbb5d9aed4f7554337_cryptolocker.exe	28
PID 1740 wrote to memory of 2544	1740	2024-04-17_c42e93120bc9bdfbb5d9aed4f7554337_cryptolocker.exe	28
PID 1740 wrote to memory of 2544	1740	2024-04-17_c42e93120bc9bdfbb5d9aed4f7554337_cryptolocker.exe	28
PID 1740 wrote to memory of 2544	1740	2024-04-17_c42e93120bc9bdfbb5d9aed4f7554337_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-17_c42e93120bc9bdfbb5d9aed4f7554337_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_c42e93120bc9bdfbb5d9aed4f7554337_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2544

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
31KB

MD5
aa19765ab2a3f1ab537e7c11ed2c0dde

SHA1
bd7f57a1b1d649a7eb3d186913cc04a3366cbfd8

SHA256
79b69bd46c8a9be5f0e6584039e1be3540e0850077d4b9e92dfb642bcbab6c38

SHA512
9bb28bde626c21bc519a531304b73e3a6617f36417cec36338d27fd6e8a3f7df8cbf662ff576a64fee5d67043008e1432ab1455e07283bdb469e8c0176ba08c4

Download Submit
memory/1740-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1740-1-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1740-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1740-4-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1740-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2544-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2544-18-0x0000000001BC0000-0x0000000001BC6000-memory.dmp

Filesize
24KB

Download
memory/2544-20-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2544-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download