fbc7643e709efebc2f4fabb99a32988133ed5aa825b8dbca8cfc48de9ada1d9e

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10-05-2024 21:27

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General

Target

2024-05-10_43bfda68ab0174d568409b61a67dac43_cryptolocker.exe
Size

38KB
MD5

43bfda68ab0174d568409b61a67dac43
SHA1

c8be2aebae5b298d942eaaf96c017cff64fa2248
SHA256

fbc7643e709efebc2f4fabb99a32988133ed5aa825b8dbca8cfc48de9ada1d9e
SHA512

535054c05673db124379c8d5993d93064b4c1d9113393b16e9cc69f5130dc0ef4a6c751aaa203f3ee57887c91b8ef6fa248c4409a3ed5e1268bde0edb939f605
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBjb1iIJSFlWvmv354ZD:X6QFElP6n+gJQMOtEvwDpjBngHnZ3GZD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-10_43bfda68ab0174d568409b61a67dac43_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2264	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 3664 wrote to memory of 2264	3664	2024-05-10_43bfda68ab0174d568409b61a67dac43_cryptolocker.exe	83
PID 3664 wrote to memory of 2264	3664	2024-05-10_43bfda68ab0174d568409b61a67dac43_cryptolocker.exe	83
PID 3664 wrote to memory of 2264	3664	2024-05-10_43bfda68ab0174d568409b61a67dac43_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-10_43bfda68ab0174d568409b61a67dac43_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_43bfda68ab0174d568409b61a67dac43_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3664
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2264

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
6caca5b40d82d13acf75e9d5fb03d3d7

SHA1
b0769f986905349e93c0a363e51fb96b962de38e

SHA256
a38a774338a93d2cc61ffc2edbbc41a496ce923e1c1e696b136d72f02604ab5c

SHA512
91a21dd6b39f874b65094b9d2ec776345d6ae73c1ea9b19aa1fbe22fffd07dac04bfdd801e6e51fd55c68bd2a2a09e060e95c5e9ecb7547776e7246b51f46604

Download Submit
memory/2264-18-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2264-17-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3664-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3664-1-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3664-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download