5471ab4c4ed51d65c9714560fcfe315928afa5c0cb28f065899ee2ae3cbe3ff1

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, 19:40

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-04_cb34a64140776866a72d1f6df6a9cded_cryptolocker.exe
Size

68KB
MD5

cb34a64140776866a72d1f6df6a9cded
SHA1

e396e71bfe0000de5fefa9552db4dae9d4c8b9f2
SHA256

5471ab4c4ed51d65c9714560fcfe315928afa5c0cb28f065899ee2ae3cbe3ff1
SHA512

ba6cf59c9e8f355bf83ac6cdcd438166cfe8168be57de089e0707ae6093242af07e418c68fc36dc6f0fe8931b64141c2e17e870ac07f4d472aeb28916b3deee2
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUM:DW60sllyWOtEvwDpjwF85+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3828-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023210-13.dat	CryptoLocker_rule2
behavioral2/memory/3828-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1592-19-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3828-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023210-13.dat	CryptoLocker_set1
behavioral2/memory/3828-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1592-19-0x0000000000500000-0x000000000050B000-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-04_cb34a64140776866a72d1f6df6a9cded_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1592	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 3828 wrote to memory of 1592	3828	2024-02-04_cb34a64140776866a72d1f6df6a9cded_cryptolocker.exe	88
PID 3828 wrote to memory of 1592	3828	2024-02-04_cb34a64140776866a72d1f6df6a9cded_cryptolocker.exe	88
PID 3828 wrote to memory of 1592	3828	2024-02-04_cb34a64140776866a72d1f6df6a9cded_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-04_cb34a64140776866a72d1f6df6a9cded_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_cb34a64140776866a72d1f6df6a9cded_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3828
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1592

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
68KB

MD5
c435ad6e1dd22ff05913e1429fef207c

SHA1
ab363b0cd083ba3f805507e30b1cca056dad3202

SHA256
a872e802b78fae9a1f06f65605177a5c60fec68a42ad3be117c2659b0f636aff

SHA512
cd3be909446214d162c4410f5dbf3b6847774aeccf26be80c9b3fd0a961fffa64fa45ea4ee164949332ad971f7e4ec3acda5f9658b228ff1bcc45967233f32cb

Download Submit
memory/1592-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1592-19-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3828-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3828-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3828-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3828-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3828-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download