643c69914d4398438a25fc31d06747c4b0ee95137914f99023659870dd37639b

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-10-2024 03:52

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General

Target

2024-10-12_985f7dccb76388f667993c55f20394ce_cryptolocker.exe
Size

46KB
MD5

985f7dccb76388f667993c55f20394ce
SHA1

5699424523d049cda1fb44f60f2b489fb019b664
SHA256

643c69914d4398438a25fc31d06747c4b0ee95137914f99023659870dd37639b
SHA512

3213222fecc088b4ff3fdc7056ec92a248b4f3bf5040d4ff716e702cd50262402955400e4176af95d986c4c707ffab94236b4df93d1d63aa23b679e1a95dffc2
SSDEEP

768:bao/2n1TCraU6GD1a4X1XOQ69zbjlAAX5e9z/:bF/y2lFizbR9Xwz/

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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2024-10-12_985f7dccb76388f667993c55f20394ce_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2440	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	2024-10-12_985f7dccb76388f667993c55f20394ce_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3836 wrote to memory of 2440	3836	2024-10-12_985f7dccb76388f667993c55f20394ce_cryptolocker.exe	84
PID 3836 wrote to memory of 2440	3836	2024-10-12_985f7dccb76388f667993c55f20394ce_cryptolocker.exe	84
PID 3836 wrote to memory of 2440	3836	2024-10-12_985f7dccb76388f667993c55f20394ce_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-10-12_985f7dccb76388f667993c55f20394ce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_985f7dccb76388f667993c55f20394ce_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3836
- 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:2440

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
46KB

MD5
1f22e68aa430ed73195fa13f369532fb

SHA1
b7148509187e5cc30f7bcd02a8abe2bae762aca6

SHA256
f921c19d8a2189da4672eeca7c6edbaa98be233a546ac869db14caf493142fcc

SHA512
a5360debf11503e9a496c91c83e351da0dcf09ce8c3d64cda68233e2ce807f410126f30c3e8d8095785cb9fce6706b2768f926e6edd0df6cac466dcb47d87d1d

Download Submit
memory/2440-25-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/3836-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3836-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3836-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download