a0cbe2315e0bf151524e3497f0372b0da902d556c65c6822668c5984d94fcc5f

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/09/2024, 03:26

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General

Target

2024-09-09_3a4d619c6e633ffe1194d2d1fb9b9afc_cryptolocker.exe
Size

40KB
MD5

3a4d619c6e633ffe1194d2d1fb9b9afc
SHA1

0b8c56c8374a4a1046a46a83a80ef8f320e931fd
SHA256

a0cbe2315e0bf151524e3497f0372b0da902d556c65c6822668c5984d94fcc5f
SHA512

3c3e1d3dcf55f2135e57d5b70ddc27351faef2476f535ac24a47dbe9fa24f0d6c281444c1ff2cc179f04a46f39103c123004dc70ed6b1804c9d22babf7a78ccc
SSDEEP

768:qTVbxjgQNQXtckstOOtEvwDpjAaD3TUogs/VXpAPWRi8:qTJu9cvMOtEvwDpjppVXzRV

Score

7^/10

discovery upx

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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	2024-09-09_3a4d619c6e633ffe1194d2d1fb9b9afc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
868	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4384-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000900000002346b-13.dat	upx
behavioral2/memory/4384-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/868-26-0x0000000000500000-0x000000000050F000-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	2024-09-09_3a4d619c6e633ffe1194d2d1fb9b9afc_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4384 wrote to memory of 868	4384	2024-09-09_3a4d619c6e633ffe1194d2d1fb9b9afc_cryptolocker.exe	85
PID 4384 wrote to memory of 868	4384	2024-09-09_3a4d619c6e633ffe1194d2d1fb9b9afc_cryptolocker.exe	85
PID 4384 wrote to memory of 868	4384	2024-09-09_3a4d619c6e633ffe1194d2d1fb9b9afc_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-09_3a4d619c6e633ffe1194d2d1fb9b9afc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-09_3a4d619c6e633ffe1194d2d1fb9b9afc_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4384
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:868

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\asih.exe

Filesize
40KB

MD5
43f4ba4831f3be638b0e653d0dab7759

SHA1
80282ba5709ccd566c1bf5cec099d04f3975eb90

SHA256
8a8f2834cb9000c332235fb98184d645047f4631c2330a59375fc813f1099a7f

SHA512
edba6d704667f456292ccea39e546223c741dad86fd55d5a3d035ddbafa4f384ad8a5f71209fe5d7d0be548d1243df96b1dd2cb4e661ea76595648b2c4a86e94

Download Submit
memory/868-19-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/868-20-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/868-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4384-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4384-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4384-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4384-3-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/4384-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download