0d74a4d98cbc8bc97354925f88ad761ca312ad0da7e96ea4e896db4c5f75af49

Analysis

max time kernel
105s
max time network
112s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
21/03/2025, 08:02

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe
Size

20KB
MD5

a503ee6b6d2e6f240e5557305ba46fa7
SHA1

06ca289c3edc87f17bcb91692a2dbdc30b33dfea
SHA256

0d74a4d98cbc8bc97354925f88ad761ca312ad0da7e96ea4e896db4c5f75af49
SHA512

581eb85fb098c676a57cb8ce0ed8ddbd94620e29616d900b8416bc0ae215905561238227705324297845aa47a8a36f578665d164b1c82517aaf070dcef66f855
SSDEEP

384:xG8OlX7EG+2LEjwg8SD6SSFYDTujQAf+hoGaQwbqqTG:xGFD1L/g9BSFYe0iv1TG

Score

7^/10

discovery upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 2 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-1-5-21-308834014-1004923324-1191300197-1000\Control Panel\International\Geo\Nation	2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
5764	pissa.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/996-0-0x0000000008000000-0x000000000800C000-memory.dmp	upx
behavioral2/files/0x00050000000229c8-13.dat	upx
behavioral2/memory/996-18-0x0000000008000000-0x000000000800C000-memory.dmp	upx
behavioral2/memory/5764-43-0x0000000008000000-0x000000000800C000-memory.dmp	upx

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	2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_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 996 wrote to memory of 5764	996	2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe	88
PID 996 wrote to memory of 5764	996	2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe	88
PID 996 wrote to memory of 5764	996	2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:996
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:5764

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

Loading Replay Monitor...

Downloads

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

Filesize
20KB

MD5
a7c9ddd45aa5329c8f8c6993038309ea

SHA1
f684ea382812445625a54e0bd53e52f4f7b19612

SHA256
46f9d2b2283e8e9d1847864901ca0ddf669cdd9ab30c66d0f7476315be7f367c

SHA512
f2790560fe082aabf2e09bd44357559704fd683e88cd85af811b3741cb89e9c5ed5e77ccac747bff303daa035dbef6d5a457d4cd42a3207f0af795c242fb3529

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe

Filesize
114B

MD5
e89f75f918dbdcee28604d4e09dd71d7

SHA1
f9d9055e9878723a12063b47d4a1a5f58c3eb1e9

SHA256
6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023

SHA512
8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0

Download Submit
memory/996-0-0x0000000008000000-0x000000000800C000-memory.dmp

Filesize
48KB

Download
memory/996-1-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/996-2-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/996-3-0x0000000003140000-0x0000000003146000-memory.dmp

Filesize
24KB

Download
memory/996-18-0x0000000008000000-0x000000000800C000-memory.dmp

Filesize
48KB

Download
memory/5764-20-0x0000000000710000-0x0000000000716000-memory.dmp

Filesize
24KB

Download
memory/5764-26-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/5764-43-0x0000000008000000-0x000000000800C000-memory.dmp

Filesize
48KB

Download