9e1ebb6fd1395fce63cc31b46b3ecd77a68b2ab2241f9fc8df1a84f537307055

Analysis

max time kernel
150s
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
21-12-2024 15:01

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General

Target

2024-12-21_4d81765bbe12e037c3ebcaff3c24aa7a_cryptolocker.exe
Size

42KB
MD5

4d81765bbe12e037c3ebcaff3c24aa7a
SHA1

a83cb43a07a29ea2c56d440936101c65ad577cff
SHA256

9e1ebb6fd1395fce63cc31b46b3ecd77a68b2ab2241f9fc8df1a84f537307055
SHA512

1e3bfc9d67632c52da86fe0549cde90263e60af71f992127b82333ae6d4dc9e4d63d1cdbf811c4dd573f64c05a902f6a88af5ac6a51170821ae24f981d68d80f
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFqZM0:bxNrC7kYo1Fxf3s05rwxbF2

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2024-12-21_4d81765bbe12e037c3ebcaff3c24aa7a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4180	pissa.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	2024-12-21_4d81765bbe12e037c3ebcaff3c24aa7a_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pissa.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3516 wrote to memory of 4180	3516	2024-12-21_4d81765bbe12e037c3ebcaff3c24aa7a_cryptolocker.exe	82
PID 3516 wrote to memory of 4180	3516	2024-12-21_4d81765bbe12e037c3ebcaff3c24aa7a_cryptolocker.exe	82
PID 3516 wrote to memory of 4180	3516	2024-12-21_4d81765bbe12e037c3ebcaff3c24aa7a_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-12-21_4d81765bbe12e037c3ebcaff3c24aa7a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-21_4d81765bbe12e037c3ebcaff3c24aa7a_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4180

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\pissa.exe

Filesize
42KB

MD5
f8551028d0440deb727d8f143432608e

SHA1
64ebf82576fed267ec59602872e7435d46423907

SHA256
cb78ff25a9364ba1810d84898e0f866386a9548cc0e86ce8baaad55155ba70b9

SHA512
84cc84ff48b489595fa45aa2cab8850d246b561b0343e88a247c38319cb6c884c142dff938636a9b2527b26fdb85ccd7b27fd54f3287836020f7b86a49ba65bc

Download Submit
memory/3516-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3516-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3516-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4180-23-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4180-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download