6f3c3e58647a3d22b76200e5455860af444ad0700336eddc855a7e2ae0d2fc6d

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 07:43

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General

Target

2024-02-23_948e154fe35275569e40b95b10b3b5b8_cryptolocker.exe
Size

38KB
MD5

948e154fe35275569e40b95b10b3b5b8
SHA1

33030bf79596579e3861084a2440bc0705b3e1ad
SHA256

6f3c3e58647a3d22b76200e5455860af444ad0700336eddc855a7e2ae0d2fc6d
SHA512

a5be72f41becd8c09d7161984dfcf2d401bd00d1b6d6fd6ae9525b9d44e33b8763b2ebea8eeb504cf8cf3c325dbacda88b2204c0904ea789609012b5750e2893
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHu8K7:X6QFElP6n+gJQMOtEvwDpjBmzDkz7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023218-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023218-12.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-1-5-21-1790404759-2178872477-2616469472-1000\Control Panel\International\Geo\Nation	2024-02-23_948e154fe35275569e40b95b10b3b5b8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2292	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 3872 wrote to memory of 2292	3872	2024-02-23_948e154fe35275569e40b95b10b3b5b8_cryptolocker.exe	87
PID 3872 wrote to memory of 2292	3872	2024-02-23_948e154fe35275569e40b95b10b3b5b8_cryptolocker.exe	87
PID 3872 wrote to memory of 2292	3872	2024-02-23_948e154fe35275569e40b95b10b3b5b8_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-23_948e154fe35275569e40b95b10b3b5b8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_948e154fe35275569e40b95b10b3b5b8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3872
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2292

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
38KB

MD5
22518f855acbc29f68773aca2d2b8d0f

SHA1
172c96bec7b9cf27136732d64678feb4066be1a9

SHA256
9e9a6fbdc0f4fe97fe02499a4e20caf9b8f169131f5ed28a705803d766119785

SHA512
8cd22126d58b7391306f2b9e5d771a1d2ebebc31db9380b515f7ae4deca0d492fcadbf9ac872de589fbc136c1a2a71d5cb71c7bc26559369dc7f344a2f4a1a83

Download Submit
memory/2292-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2292-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3872-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3872-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3872-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download