b4b184142608cf81f89256f4494e555efc0061f63dbf4c43bd213d87af96f04a

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 05:32

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General

Target

2024-09-19_afa0dd1a43108fce17525e9b43503ec3_cryptolocker.exe
Size

36KB
MD5

afa0dd1a43108fce17525e9b43503ec3
SHA1

077e1437a46a76426dfa703d80f14d3dbc3dff03
SHA256

b4b184142608cf81f89256f4494e555efc0061f63dbf4c43bd213d87af96f04a
SHA512

98245afc8747193b55920d334ecf6630a9b71f97ed6444dddaf7ae5376cadaea70024f038c8fe3843cc64ff0beca20a111ed6e748ecb41221a510a6ebe6d3a5e
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6oTy4n:bc/y2lLRU6zA6cT

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	2024-09-19_afa0dd1a43108fce17525e9b43503ec3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2732	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	2024-09-19_afa0dd1a43108fce17525e9b43503ec3_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 2740 wrote to memory of 2732	2740	2024-09-19_afa0dd1a43108fce17525e9b43503ec3_cryptolocker.exe	85
PID 2740 wrote to memory of 2732	2740	2024-09-19_afa0dd1a43108fce17525e9b43503ec3_cryptolocker.exe	85
PID 2740 wrote to memory of 2732	2740	2024-09-19_afa0dd1a43108fce17525e9b43503ec3_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-19_afa0dd1a43108fce17525e9b43503ec3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_afa0dd1a43108fce17525e9b43503ec3_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2740
- 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:2732

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
36KB

MD5
9be2d5dec59b51cae45ace7433b072f5

SHA1
b96f0f272409d3cabc47416b1875b9a832c0f21c

SHA256
9be19f56e418e66cca56ac00d8f768453e4f4da7d0262601bee7de452a158cfa

SHA512
8cf9cdf67df3eb90f84f3f0bd714a6cfce91678f9de4947d21fd3c523d196fe4e1f2e91c5a390826d76d5c275693c2bb3fb888ac5b846ee3035f39024d546539

Download Submit
memory/2732-25-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/2740-0-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/2740-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/2740-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download