a2e8ebfe7f31df30c6c8827762c4e0309ce5e235ef4c3c4645ccfffe50275e16

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2024 12:27

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General

Target

2024-09-05_4771f7ceb61f6b7a486b8cd9cd4d8efa_cryptolocker.exe
Size

35KB
MD5

4771f7ceb61f6b7a486b8cd9cd4d8efa
SHA1

ec70abbc9f538dd18344cc782f716d48d76040bf
SHA256

a2e8ebfe7f31df30c6c8827762c4e0309ce5e235ef4c3c4645ccfffe50275e16
SHA512

e7724112c3024554d3d2f67a301c3b7c815e99de4b66c576546101bc13319d2e1bfdef210db5c2f715b859f4a210cb22331df4738383ff19de2025bcc711c89a
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuadQW:bG74zYcgT/Ekd0ryfjHW

Score

7^/10

discovery

Malware Config

Signatures

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	2024-09-05_4771f7ceb61f6b7a486b8cd9cd4d8efa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4700	hasfj.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hasfj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-05_4771f7ceb61f6b7a486b8cd9cd4d8efa_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 4700	5048	2024-09-05_4771f7ceb61f6b7a486b8cd9cd4d8efa_cryptolocker.exe	85
PID 5048 wrote to memory of 4700	5048	2024-09-05_4771f7ceb61f6b7a486b8cd9cd4d8efa_cryptolocker.exe	85
PID 5048 wrote to memory of 4700	5048	2024-09-05_4771f7ceb61f6b7a486b8cd9cd4d8efa_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-05_4771f7ceb61f6b7a486b8cd9cd4d8efa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_4771f7ceb61f6b7a486b8cd9cd4d8efa_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4700

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
35KB

MD5
7830c169fa319312065429dfcc245487

SHA1
61598721026d1ee7602ef5076538f7c775de09f4

SHA256
40fc0fd91f893b3f0537e1bf1541e812bb1410b41cde1ee95e10fbe656ad2980

SHA512
46791693397c2c5ff836f7e98871c3343ae42d3148ab20fe5f48fbc98d78b9fdf8408ec8b3312c1f8e038b080659dd1f7e4441da47b4ceaa181cab90f9babe07

Download Submit
memory/4700-19-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4700-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4700-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/5048-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/5048-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/5048-2-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/5048-3-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/5048-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download