40f4a03f529a1af4c25dde53c99bfec4a8d7cdb0abab3d8b92a4c662cda852f2

Analysis

max time kernel
136s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23/05/2024, 21:22

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-23_f124b3db83f8c2d9a0d4c01ce4bc7c1c_cryptolocker.exe
Size

57KB
MD5

f124b3db83f8c2d9a0d4c01ce4bc7c1c
SHA1

f2cd411065153f130e4f2e7e31f81a1f3989906f
SHA256

40f4a03f529a1af4c25dde53c99bfec4a8d7cdb0abab3d8b92a4c662cda852f2
SHA512

0231d2708748b7fee118112a2ac9ea0b1334648799ccb08096ab46feb002150e6e0578fe2e61653331c5cd8f32b6cbc53dae75c11bd851027f19bb377d7e68d5
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5QJz7/e6Tg:6j+1NMOtEvwDpjr8oxExe6Tg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1364-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002340f-13.dat	CryptoLocker_rule2
behavioral2/memory/1364-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/384-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/384-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1364-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002340f-13.dat	CryptoLocker_set1
behavioral2/memory/1364-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/384-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/384-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/1364-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000800000002340f-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1364-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/384-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/384-26-0x0000000000500000-0x000000000050F000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-23_f124b3db83f8c2d9a0d4c01ce4bc7c1c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
384	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 1364 wrote to memory of 384	1364	2024-05-23_f124b3db83f8c2d9a0d4c01ce4bc7c1c_cryptolocker.exe	84
PID 1364 wrote to memory of 384	1364	2024-05-23_f124b3db83f8c2d9a0d4c01ce4bc7c1c_cryptolocker.exe	84
PID 1364 wrote to memory of 384	1364	2024-05-23_f124b3db83f8c2d9a0d4c01ce4bc7c1c_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-23_f124b3db83f8c2d9a0d4c01ce4bc7c1c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_f124b3db83f8c2d9a0d4c01ce4bc7c1c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:384

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
57KB

MD5
81ff020b7b2e380853e5e9de5d9ab8ff

SHA1
6ef64f806f7afd3c1f4e436ca2a7c20fd2b5ed22

SHA256
41c03b66b0d2e1a72a9fae6b737b2969c4da5d294f088ea9e746b17920a73505

SHA512
fd268b1e3cdd25dbdeb7f466174f36520ed1c4a0cfc166d31a26930f9e1449b9dcf68fc8b9c96262e3416775b7fc0f58b5e8350f9d3997051a078a84d4984521

Download Submit
memory/384-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/384-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1364-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1364-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1364-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1364-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1364-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download