34fe06bd9626b56a4e6d94270f44760a5505bd11004818c5e6dac898027ed3f1

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 17:36

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-02-04_fbfb325589a47638a8ef5d900bce477c_cryptolocker.exe
Size

72KB
MD5

fbfb325589a47638a8ef5d900bce477c
SHA1

91fbafaffbb5e47a986cc2a86862db3f3be5648b
SHA256

34fe06bd9626b56a4e6d94270f44760a5505bd11004818c5e6dac898027ed3f1
SHA512

9fc1922a1559c81ec0d3c7c3423cff76457468f620ae11918710011d5b992418302a30d99d4c9fe6cd84c3ce636fa821f3aa64c972e9db9ccf7a7b688b2a8961
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1bay:X6a+SOtEvwDpjBZYvQd2z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002320a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002320a-12.dat	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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-04_fbfb325589a47638a8ef5d900bce477c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3276	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 5012 wrote to memory of 3276	5012	2024-02-04_fbfb325589a47638a8ef5d900bce477c_cryptolocker.exe	86
PID 5012 wrote to memory of 3276	5012	2024-02-04_fbfb325589a47638a8ef5d900bce477c_cryptolocker.exe	86
PID 5012 wrote to memory of 3276	5012	2024-02-04_fbfb325589a47638a8ef5d900bce477c_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-04_fbfb325589a47638a8ef5d900bce477c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_fbfb325589a47638a8ef5d900bce477c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3276

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\asih.exe

Filesize
72KB

MD5
964a9ae95a048f9a46cadc5a3b5e08f7

SHA1
1114720350a9b8acc6836edbecf1c5043263b424

SHA256
8c4be63cb5dd492fedd07bb37898edbb82855a32003c760e64a394ecc4c8af27

SHA512
903182fdd31276dab75b6fc584effc961ae849658b63e64ab73c5cce2e890211f4d4cfcc9d8448cfebd2599079f10cc3c66c86ff6f5be0f68c9013e030d6839e

Download Submit
memory/3276-18-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3276-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5012-0-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/5012-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/5012-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download