107918f96ccf664f0a1e2418bfe4cfb5054c140aa01f708db50a542d75f2b3a7

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 06:39

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-28_5cf5264dca4819ac217d3a0b6ae1a7a9_cryptolocker.exe
Size

64KB
MD5

5cf5264dca4819ac217d3a0b6ae1a7a9
SHA1

3be1b8da0adcf6654fa84d6fc6b34fe0ead35371
SHA256

107918f96ccf664f0a1e2418bfe4cfb5054c140aa01f708db50a542d75f2b3a7
SHA512

db2bf86a2a319c0104794115a6868b0e5dc551f5cbd9fae77c2b2ecd85a9e4df7c325a0825fce6e5568d8f7822ec5536e46610066dc247c80fe1838379e315ab
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEMoq:6j+1NMOtEvwDpjr8ox8UDEhq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3188-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023203-13.dat	CryptoLocker_rule2
behavioral2/memory/3188-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4012-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3188-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023203-13.dat	CryptoLocker_set1
behavioral2/memory/3188-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4012-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3188-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023203-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3188-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4012-26-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-28_5cf5264dca4819ac217d3a0b6ae1a7a9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4012	misid.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3188 wrote to memory of 4012	3188	2024-03-28_5cf5264dca4819ac217d3a0b6ae1a7a9_cryptolocker.exe	88
PID 3188 wrote to memory of 4012	3188	2024-03-28_5cf5264dca4819ac217d3a0b6ae1a7a9_cryptolocker.exe	88
PID 3188 wrote to memory of 4012	3188	2024-03-28_5cf5264dca4819ac217d3a0b6ae1a7a9_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-28_5cf5264dca4819ac217d3a0b6ae1a7a9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_5cf5264dca4819ac217d3a0b6ae1a7a9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3188
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
64KB

MD5
f792ca41b0ff72dc54764d3c6f84ae0e

SHA1
1245ad268451e190a3719fcc763dac8c288c0cd6

SHA256
4025d0c162691bbf3589c291c7d0dbc9dcfa1b7307c4ed744793238590594061

SHA512
ef94f78dc0fdbc314e9b112cfb6ed3fd2ab9d74f63bd7d148c047d54c2944e1aa7d5120590ed673de8183e638eef47bca1ec33ffb7efe2a4c25764a55036c920

Download Submit
memory/3188-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3188-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3188-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3188-3-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/3188-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4012-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4012-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4012-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download