ba2e32d959fe03502966c7355679d78527207516b70c58a613e1614e325e2aeb

Analysis

max time kernel
148s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 00:24

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General

Target

2024-05-31_27a10f80646c11b44ecdfc0b680150b5_cryptolocker.exe
Size

43KB
MD5

27a10f80646c11b44ecdfc0b680150b5
SHA1

836b219e77dd8612b9a850cc583a71db9b54a9f2
SHA256

ba2e32d959fe03502966c7355679d78527207516b70c58a613e1614e325e2aeb
SHA512

e4ca2b47425e2acd1c58f9532fa4d6479864748776faca01fc72344e5096d676d2d046a20f387ad8c21ee0db38a93e9ac12fd1b9271276d1c536cb583c1dac78
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUkw:bm74zYcgT/EkM0ryfjdw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2772-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000015c23-11.dat	CryptoLocker_rule2
behavioral1/memory/2772-14-0x0000000001E20000-0x0000000001E2D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2772-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2912-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2912-27-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2912	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2772	2024-05-31_27a10f80646c11b44ecdfc0b680150b5_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 2772 wrote to memory of 2912	2772	2024-05-31_27a10f80646c11b44ecdfc0b680150b5_cryptolocker.exe	28
PID 2772 wrote to memory of 2912	2772	2024-05-31_27a10f80646c11b44ecdfc0b680150b5_cryptolocker.exe	28
PID 2772 wrote to memory of 2912	2772	2024-05-31_27a10f80646c11b44ecdfc0b680150b5_cryptolocker.exe	28
PID 2772 wrote to memory of 2912	2772	2024-05-31_27a10f80646c11b44ecdfc0b680150b5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_27a10f80646c11b44ecdfc0b680150b5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_27a10f80646c11b44ecdfc0b680150b5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2912

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
43KB

MD5
a3941d5460821632b2eccca37d3e56c4

SHA1
2b3f89a7773a4a2765272d63907d43b7faec3180

SHA256
a602adbb7a098764fcbb7fe2cc42dcd6613f228ef4b1292709f5ba2569af8a44

SHA512
bf2c5bd040dc475eb05bddf1c0bec6128d5502b8f82881d45ff29ab8e3bfdfab9f796b302cc77d14a43dd9d9fced6a3c7710c4b5c481de0377e5c45f1b126853

Download Submit
memory/2772-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2772-8-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2772-2-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

Filesize
24KB

Download
memory/2772-1-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2772-14-0x0000000001E20000-0x0000000001E2D000-memory.dmp

Filesize
52KB

Download
memory/2772-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2912-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2912-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2912-26-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2912-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download