1ba54154c20657d3a4f84fbf58ec268c9213e5ba8569db53392dd18bb539c2b3

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26-03-2024 19:45

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General

Target

2024-03-26_b54849c8b5371a97e60524eaf13874f8_cryptolocker.exe
Size

49KB
MD5

b54849c8b5371a97e60524eaf13874f8
SHA1

992147a0625afc8b754cafaaa0603850e4abbd43
SHA256

1ba54154c20657d3a4f84fbf58ec268c9213e5ba8569db53392dd18bb539c2b3
SHA512

19567909a3af605a74ca6ff1ea7e3a9c4fc984a04151f7bcc2accd7c9f99597fa8b50f5bd4e0c5ca59d7112c52c81ebfc4e92190f56024571f25c29c0a05e1de
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZpl:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLnl

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231fe-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231fe-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-26_b54849c8b5371a97e60524eaf13874f8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1776	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 4932 wrote to memory of 1776	4932	2024-03-26_b54849c8b5371a97e60524eaf13874f8_cryptolocker.exe	90
PID 4932 wrote to memory of 1776	4932	2024-03-26_b54849c8b5371a97e60524eaf13874f8_cryptolocker.exe	90
PID 4932 wrote to memory of 1776	4932	2024-03-26_b54849c8b5371a97e60524eaf13874f8_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-26_b54849c8b5371a97e60524eaf13874f8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_b54849c8b5371a97e60524eaf13874f8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1776

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
50KB

MD5
969560a7e68708d3e3c56491a628b6c5

SHA1
b8ee5c48be4f096df6846e61fd17c568f3a39845

SHA256
f92d8fe27fb6679feb127c323e7bc33bd511d3bcee7e74739d932db5924e84bb

SHA512
9a13f83b8e77275c50b8f04354e24724511c1be6f60d37cf6f03f136e703366e2a99fcf225ceb3a28264484e97aee6e2ebf056b74774045b252f7098e317b022

Download Submit
memory/4932-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4932-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4932-2-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download