cbb1da37eb2ba4655c5aad4e09bd514f9764b8f88dbf0c5887689da4b5486c5a

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 11:30

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General

Target

2024-05-09_34f29e54b3e7e9123b569143e3ff1ae6_cryptolocker.exe
Size

57KB
MD5

34f29e54b3e7e9123b569143e3ff1ae6
SHA1

649a990a3bceeec1d8c9b933f6725469b9ce5311
SHA256

cbb1da37eb2ba4655c5aad4e09bd514f9764b8f88dbf0c5887689da4b5486c5a
SHA512

66dd002570893996d5edbad41ef5ecfeffaa9bbdd2228a40a8c8d94f1778b3196bbda28ed671f28bdb7d2439a998913fceedbe308b78f7052b4202e7cd94775b
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylsPQQWTa/2wGE:79mqyNhQMOtEvwDpjBPY7xv3gy9WTAcE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3012-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002327d-13.dat	CryptoLocker_rule2
behavioral2/memory/3012-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3712-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3012-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002327d-13.dat	CryptoLocker_set1
behavioral2/memory/3012-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3712-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-09_34f29e54b3e7e9123b569143e3ff1ae6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3712	asih.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 3012 wrote to memory of 3712	3012	2024-05-09_34f29e54b3e7e9123b569143e3ff1ae6_cryptolocker.exe	82
PID 3012 wrote to memory of 3712	3012	2024-05-09_34f29e54b3e7e9123b569143e3ff1ae6_cryptolocker.exe	82
PID 3012 wrote to memory of 3712	3012	2024-05-09_34f29e54b3e7e9123b569143e3ff1ae6_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-09_34f29e54b3e7e9123b569143e3ff1ae6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_34f29e54b3e7e9123b569143e3ff1ae6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3712

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

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Downloads

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

Filesize
57KB

MD5
11de5bb7f9456752a30eaa8f0f043407

SHA1
bb4197a81728b681aa4d6aa2fe1c83ff2187a472

SHA256
55bf6874e3014834e8a7fe9286dfc5a6d11b16db3cae1bae0102e5a1c581d7da

SHA512
7be0e27cbab9ec0c81994c8a001258b8dc2093088374a55ff4320ef6089fe5d24eb22e84f76ab567599dd9b2430a715e10e68a57e515519f7120fd86207d6951

Download Submit
memory/3012-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3012-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3012-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3012-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3012-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3712-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download