941a1b0e01ab6105fc783030ba911dca6f1bfc92d54781a035609697c5f249f9

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
22/05/2024, 06:05

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General

Target

2024-05-22_c323e37299bc644681bbe95cac3f03c7_cryptolocker.exe
Size

44KB
MD5

c323e37299bc644681bbe95cac3f03c7
SHA1

2e30f455c33d84ccf45bd07493a2e4d6a27aef57
SHA256

941a1b0e01ab6105fc783030ba911dca6f1bfc92d54781a035609697c5f249f9
SHA512

0267d856f638f95317ff69593dec4f6de0ca3d89a31e087a08c0acc1b2b121c92dd0260393f188e627f4128808ae9293e23673b3e246666bd695bf5d4f69e732
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD9H7Ze:X6QFElP6n+gJQMOtEvwDpjBmzDkWDt78

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002328f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002328f-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-22_c323e37299bc644681bbe95cac3f03c7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4496	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 1916 wrote to memory of 4496	1916	2024-05-22_c323e37299bc644681bbe95cac3f03c7_cryptolocker.exe	83
PID 1916 wrote to memory of 4496	1916	2024-05-22_c323e37299bc644681bbe95cac3f03c7_cryptolocker.exe	83
PID 1916 wrote to memory of 4496	1916	2024-05-22_c323e37299bc644681bbe95cac3f03c7_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-22_c323e37299bc644681bbe95cac3f03c7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_c323e37299bc644681bbe95cac3f03c7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4496

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
44KB

MD5
2003055aed0e5e9ee49ddd1eec236200

SHA1
3868228007d4ff60d8614e64c9ad46674bd9fe6a

SHA256
36db8dc6aeff5ff0a17e688faeac5aae6562bd016a7621f4785b13c9ce52f6f7

SHA512
97cc594678a64c56f74c7085ae4e0cd584c27e518c713e9ed451834d338972364e441f565963d839fd646cc0aa45b554b172dbc07dbbdfebf13c12a6ae16a49b

Download Submit
memory/1916-0-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/1916-1-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/1916-8-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/4496-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4496-23-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download