dc23d08504a34a60410079c50a4d88dd3a03d3f2027b06a9edc15c613fd4ee8a

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-10-2024 08:23

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General

Target

2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe
Size

39KB
MD5

2a767ced2540d530ae03e36dbe873ffa
SHA1

6d6a6be9ced25510c172cc4de923d65d0d2d0a18
SHA256

dc23d08504a34a60410079c50a4d88dd3a03d3f2027b06a9edc15c613fd4ee8a
SHA512

229612f5345943c43100e37525ad86bddbccafe47b20f857ed022572a8cf284b68e4d58373230b18fb8347d06bde41e600b7c2808db2f879edf4ca7fe3476cc4
SSDEEP

768:b7o/2n1TCraU6GD1a4Xcn62TUdcuQlqJ51mwl:bc/y2lm6Y0AqJ51mwl

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

Processes:

2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

rewok.exe

pid	Process
3484	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

Processes:

2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exerewok.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe

description	pid	Process	procid_target
PID 2528 wrote to memory of 3484	2528	2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe	85
PID 2528 wrote to memory of 3484	2528	2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe	85
PID 2528 wrote to memory of 3484	2528	2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2528
- 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:3484

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

Replay Monitor

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Downloads

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

Filesize
39KB

MD5
2e939ca01505cf56ef87aa878d3966c4

SHA1
b3384e5feab3ea943f73fc314b45c48399777f41

SHA256
17fafc1a72b1a3d4e03df61d6deecec91a04f01d6ba596a51f3c261dd52ed043

SHA512
1aec128757a7fdd9341029230d31f86b29c5df077ca0cd2e146f10c14e99f4961f449d1cc5163e1eda643180305d193c94433c1ffeb0f8c5d83357646f989950

Download Submit
memory/2528-0-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2528-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2528-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3484-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download