598d16bc42c559e1ba2de74c2799ddc8f23fa4ab9f336e78b90ea77d7e82a866

Analysis

max time kernel
148s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19/03/2024, 11:43

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General

Target

2024-03-19_7ae3e382523b3ad24bf1beee00c017dd_cryptolocker.exe
Size

73KB
MD5

7ae3e382523b3ad24bf1beee00c017dd
SHA1

c741f33b51bca823e872f3ce34298afa2a41d8d9
SHA256

598d16bc42c559e1ba2de74c2799ddc8f23fa4ab9f336e78b90ea77d7e82a866
SHA512

15312fa789e6b0a6acdb1333ed5f6ebf91dfc16411d0fa88ab0b2620aa67519575968b8a22dc9a4f3c1e508d62ec7ed5f1f63ef7466dedaea27f721494432d3b
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1gFY:X6a+SOtEvwDpjBZYvQd2F

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-19_7ae3e382523b3ad24bf1beee00c017dd_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4720	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 5028 wrote to memory of 4720	5028	2024-03-19_7ae3e382523b3ad24bf1beee00c017dd_cryptolocker.exe	89
PID 5028 wrote to memory of 4720	5028	2024-03-19_7ae3e382523b3ad24bf1beee00c017dd_cryptolocker.exe	89
PID 5028 wrote to memory of 4720	5028	2024-03-19_7ae3e382523b3ad24bf1beee00c017dd_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-19_7ae3e382523b3ad24bf1beee00c017dd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_7ae3e382523b3ad24bf1beee00c017dd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5028
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4720

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
73KB

MD5
ad8c03f39fed21f69c99156ac4565f36

SHA1
f90505177e2021b8a7aa8d179c46a8258fcd99e3

SHA256
0c8dfce6ceef3de395c87ec171395003c50076afb7cbb0a9f8e8a53309faa5b0

SHA512
e859e4e96d79ffbaa7d7cb1dbb7dda109c2da0dfeadb34ba95dea1225f8557d3b50aeb1359c98c5613a67206b6b5c6f9f70929dbe91655197097ea43bd33710a

Download Submit
memory/4720-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4720-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5028-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/5028-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/5028-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download