563100499a42ef18cc696bb0cef0a2be3da722b00d4c2812e3c59bd28c14baaf

Analysis

max time kernel
150s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 13:42

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General

Target

2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe
Size

36KB
MD5

4a7aefe48678466d227208625d758727
SHA1

1a2741ddff5d533bc5699e587778cedf43de2066
SHA256

563100499a42ef18cc696bb0cef0a2be3da722b00d4c2812e3c59bd28c14baaf
SHA512

04a221df9afdd23354279cf796e76906272aeddbf3b4c7eda41d8a8773b2022c8bef47414ccd0e6847d160deb7556f72bb6811f6da11b7923b4d4832a0711148
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCm:X6QFElP6n+gJQMOtEvwDpjBmzDUm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023204-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023204-12.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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4604	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 2852 wrote to memory of 4604	2852	2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe	88
PID 2852 wrote to memory of 4604	2852	2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe	88
PID 2852 wrote to memory of 4604	2852	2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4604

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
36KB

MD5
e4131f1513bacaeef2a5d91d654c7391

SHA1
a6931a5ef460606c754320803dfd342a7ebb449d

SHA256
2a185a6694de2e93a2133ed84e8096b3e832e7c5f35e1824aec8e05415d2b73b

SHA512
9943481f6c74c28d177867aa8d8a102c7135acc81cb7afba66109bf1bfb09f515dd482e2553ce249a3ce18d35753156a971806df87cee6de4365568845707a84

Download Submit
memory/2852-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2852-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2852-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4604-17-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/4604-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download