9636ab14ff35eb6349b6cde0480e5ca7048b199945da8a998deb59cd205f86fd

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2024, 12:38

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General

Target

2024-01-24_fa4b591aa4a7df3a796f25d06b6e45c2_cryptolocker.exe
Size

33KB
MD5

fa4b591aa4a7df3a796f25d06b6e45c2
SHA1

891ad81fcb6a1ae1981b2535324a1283c165eecf
SHA256

9636ab14ff35eb6349b6cde0480e5ca7048b199945da8a998deb59cd205f86fd
SHA512

28a8fa630d7dc759c4d419bdf8b7a1e5865d56c91e3cfc29d2d289522b83bc2533fe590c08f6621866d9d8f16f9a310ce8599beb9a36eb8cc8e82646374eeac1
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUqMV6U8zKvGaLD:bA74zYcgT/Ekd0ryfj86U8zbS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023233-12.dat	CryptoLocker_rule2

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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-01-24_fa4b591aa4a7df3a796f25d06b6e45c2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4444	hasfj.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 3844 wrote to memory of 4444	3844	2024-01-24_fa4b591aa4a7df3a796f25d06b6e45c2_cryptolocker.exe	85
PID 3844 wrote to memory of 4444	3844	2024-01-24_fa4b591aa4a7df3a796f25d06b6e45c2_cryptolocker.exe	85
PID 3844 wrote to memory of 4444	3844	2024-01-24_fa4b591aa4a7df3a796f25d06b6e45c2_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-01-24_fa4b591aa4a7df3a796f25d06b6e45c2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_fa4b591aa4a7df3a796f25d06b6e45c2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3844
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4444

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\hasfj.exe

Filesize
33KB

MD5
97fbb6bf837a563313c9d11a23365b06

SHA1
115454808102f42f75a036d151a8801240a534fc

SHA256
d531555839c7a89f95cfd211146e924f793244a6db91328697a40dd23da100e0

SHA512
91ca6fbdd857f0e0db3f701dce63267cab866956e0a2d4358900013068c7d3a074c7c087770f3ba7f0d196d91c260c63f9d0e0c4c2324d528c0aab09af5c8093

Download Submit
memory/3844-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3844-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3844-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4444-18-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4444-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download