08d596517592e1600dfe38413b2dba72ce599ac10114552cc8c278302a7c3cf0

Analysis

max time kernel
148s
max time network
150s
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, 12:13

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General

Target

2024-09-05_b3bc1b205877eb2aaaaebbe6ffc0f6d9_cryptolocker.exe
Size

37KB
MD5

b3bc1b205877eb2aaaaebbe6ffc0f6d9
SHA1

e47dd15128a021ec66405d469a8dae4848c546be
SHA256

08d596517592e1600dfe38413b2dba72ce599ac10114552cc8c278302a7c3cf0
SHA512

256eda76c32e71d7813024ce292abfb5b5ad087b45a5f518d59a65ff776909f7189193ad707b2443fa06f580ae477fc1990d07bd50d581a2e854ea49caf97272
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMI:bc/y2lkF0+BD

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	2024-09-05_b3bc1b205877eb2aaaaebbe6ffc0f6d9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4536	rewok.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	rewok.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-05_b3bc1b205877eb2aaaaebbe6ffc0f6d9_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3800 wrote to memory of 4536	3800	2024-09-05_b3bc1b205877eb2aaaaebbe6ffc0f6d9_cryptolocker.exe	85
PID 3800 wrote to memory of 4536	3800	2024-09-05_b3bc1b205877eb2aaaaebbe6ffc0f6d9_cryptolocker.exe	85
PID 3800 wrote to memory of 4536	3800	2024-09-05_b3bc1b205877eb2aaaaebbe6ffc0f6d9_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-05_b3bc1b205877eb2aaaaebbe6ffc0f6d9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_b3bc1b205877eb2aaaaebbe6ffc0f6d9_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3800
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4536

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\rewok.exe

Filesize
37KB

MD5
9ceb5c6e5b71e4b38aa5bfaf38834ed8

SHA1
8875a1e09f7686e797512b93b7b38f3016fddb55

SHA256
04ef47474b239bea9e0f41d37f711d26d9808fd5979072029d1a2f603ebc393e

SHA512
f07195593e9c600fac38585323bd49cbf572653e92f84a671d364e031e6735f34fd8ce08bfffd74e7d99d7675dbe60011b6b36d19eeeee4b4074207e9b95ff01

Download Submit
memory/3800-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3800-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3800-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4536-25-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download