b5c07689f7787151aa672b79178c65fd8c8d8261d618ba2182139049792a0d0c

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
20/05/2024, 06:32

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General

Target

2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe
Size

43KB
MD5

3e4c9f540f79847d3148941d54cccf68
SHA1

06883516de39ce797505c522fdcfdd369315c7da
SHA256

b5c07689f7787151aa672b79178c65fd8c8d8261d618ba2182139049792a0d0c
SHA512

2da102260ef6af7ddb042a66680c7cc970c4131b1af4a11aa62b85656858c884e0f6cbbbaf7f3ba1798b1315f08743c3651d84ff85a9ab62c9118eb0ca980465
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD95q4:X6QFElP6n+gJQMOtEvwDpjBmzDkWDrZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023298-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023298-12.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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
860	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 4952 wrote to memory of 860	4952	2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe	83
PID 4952 wrote to memory of 860	4952	2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe	83
PID 4952 wrote to memory of 860	4952	2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:860

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
43KB

MD5
6286db80f8fd8d3aeb670196220b12e3

SHA1
369fcbf145b6698d9462a8407be447070903f2ba

SHA256
8fecefe85156ffa4f11ef4eb27d2b863f10becf5098a161571fc3ba8a978f390

SHA512
4ca54d91b0a0f20249c8c10ea9f2ce8c01b8291a140a4352c57a496e168cc41e9676d348391b38904d232c2675ad507111cf7b960eefb811489dc0741afa3669

Download Submit
memory/4952-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4952-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4952-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download