eb3efdc3155d9e6962d80ecd32e32955fe8cc1b8637570510282433d78ee0d4c

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
25/05/2024, 22:34

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General

Target

2024-05-25_995c743e875ea0c0497967ed98a1f424_cryptolocker.exe
Size

69KB
MD5

995c743e875ea0c0497967ed98a1f424
SHA1

ddefd741b85164442445b64223d6dee69f132c9c
SHA256

eb3efdc3155d9e6962d80ecd32e32955fe8cc1b8637570510282433d78ee0d4c
SHA512

160a47f339cddec47712d47dfd4133510322459c9e1671783095be41ea232924b70ad42a6359174513c37a05417cef06fe75e64beff693cf891eaccf076808b0
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUNsYD/Y:i5nkFGMOtEvwDpjNbwQEI8UZDg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2604-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015d59-11.dat	CryptoLocker_rule2
behavioral1/memory/2636-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2604-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2636-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2604-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2604-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2636-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral1/memory/2604-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000b000000015d59-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2636-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2604-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2636-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
2636	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2604	2024-05-25_995c743e875ea0c0497967ed98a1f424_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 2604 wrote to memory of 2636	2604	2024-05-25_995c743e875ea0c0497967ed98a1f424_cryptolocker.exe	28
PID 2604 wrote to memory of 2636	2604	2024-05-25_995c743e875ea0c0497967ed98a1f424_cryptolocker.exe	28
PID 2604 wrote to memory of 2636	2604	2024-05-25_995c743e875ea0c0497967ed98a1f424_cryptolocker.exe	28
PID 2604 wrote to memory of 2636	2604	2024-05-25_995c743e875ea0c0497967ed98a1f424_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-25_995c743e875ea0c0497967ed98a1f424_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_995c743e875ea0c0497967ed98a1f424_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2636

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\misid.exe

Filesize
69KB

MD5
f907ef3b109620d68a24cd1868c19c88

SHA1
bc8a4bbab64067fe2e485333b68c2d0a79748aec

SHA256
4660162d0f7ff4aaa1c1ea3574de430fa5ff4ef8a0b5e577eca82403a230866e

SHA512
9f93f4f3023255c0fde92c850549ade2e5071310cd3e12f507817b44a7dc1773c7c85ebd9bd84070a2e42ccd1b09b75bd0270dbda2e1e7d68785590e95a7cc05

Download Submit
memory/2604-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2604-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2604-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2604-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2604-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2636-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2636-20-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2636-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2636-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download