a9e71a01ccfa4f9b67802923a8ffc126d48be12a7aa840bfa405735060dccf00

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 18:03

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General

Target

2024-05-29_5193880f4e43d952508badb4b58c064a_cryptolocker.exe
Size

38KB
MD5

5193880f4e43d952508badb4b58c064a
SHA1

31676b59b902435ecc33096112b40d3566c34860
SHA256

a9e71a01ccfa4f9b67802923a8ffc126d48be12a7aa840bfa405735060dccf00
SHA512

9ecaf73ca21dfe4e32fb4cab04b73bcb560b6bbe73da11a0061f57df2baeb5d63801ea35ae32e10cf74ff8253a0ae0f38ed2bf97cd1280d9628349edad9360a0
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswmT3H4:bA6YcA/X6G0W143Y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233ff-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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-29_5193880f4e43d952508badb4b58c064a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4800	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 4920 wrote to memory of 4800	4920	2024-05-29_5193880f4e43d952508badb4b58c064a_cryptolocker.exe	81
PID 4920 wrote to memory of 4800	4920	2024-05-29_5193880f4e43d952508badb4b58c064a_cryptolocker.exe	81
PID 4920 wrote to memory of 4800	4920	2024-05-29_5193880f4e43d952508badb4b58c064a_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-29_5193880f4e43d952508badb4b58c064a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_5193880f4e43d952508badb4b58c064a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4920
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4800

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
38KB

MD5
33ff79cee2f3b37787da29856fe3f95a

SHA1
d15bdc96a0f9befe6917ae7d282a8de0e97f7d79

SHA256
664936bb484fdd4a167b7ecb60037c1ffa3b43639e42ff86c17be80da29123a8

SHA512
3e08559bbe9276fac2d5467621e187c561f59b5139b485d9c2e20c17adeec2651f8209a1bd697f6472ca8103b2c2b5fd67fc18e0c1bd7339a316578bf12dba08

Download Submit
memory/4800-23-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4920-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4920-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4920-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download