424fe9da2cbb981a5a0bd6c93e22ffd040fad22b431a0d697cd3253ba2b127d5

Analysis

max time kernel
148s
max time network
149s
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, 03:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-09-19_77730a1d2ce3a8c9427c0fdf2e8f888d_cryptolocker.exe
Size

40KB
MD5

77730a1d2ce3a8c9427c0fdf2e8f888d
SHA1

6bae59108a93515784277abac91f9312bc99552c
SHA256

424fe9da2cbb981a5a0bd6c93e22ffd040fad22b431a0d697cd3253ba2b127d5
SHA512

79481f8a10e0e9fb8b4a005ec74a086c853d6e6535916da9117833ef92e6f4784ee608c94ed76e5488137566a8a6ee29e5c869bffa084c07ae759a18a8b49824
SSDEEP

768:qTVbxjgQNQXtckstOOtEvwDpjAaD3TUogs/VXpAPWRiQK:qTJu9cvMOtEvwDpjppVXzRY

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	2024-09-19_77730a1d2ce3a8c9427c0fdf2e8f888d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1316	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1740-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0009000000023401-13.dat	upx
behavioral2/memory/1740-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1316-26-0x0000000000500000-0x000000000050F000-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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-19_77730a1d2ce3a8c9427c0fdf2e8f888d_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 1316	1740	2024-09-19_77730a1d2ce3a8c9427c0fdf2e8f888d_cryptolocker.exe	82
PID 1740 wrote to memory of 1316	1740	2024-09-19_77730a1d2ce3a8c9427c0fdf2e8f888d_cryptolocker.exe	82
PID 1740 wrote to memory of 1316	1740	2024-09-19_77730a1d2ce3a8c9427c0fdf2e8f888d_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_77730a1d2ce3a8c9427c0fdf2e8f888d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_77730a1d2ce3a8c9427c0fdf2e8f888d_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1740
- 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:1316

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\asih.exe

Filesize
40KB

MD5
a2b2421ba8b76c0ae2d2e8b4a67d06d5

SHA1
42b72f5a327660849dfbc4d1595f53e9e4256f40

SHA256
7f3ee58ea3153e24b58059c480327d712df36b258de15f7b451e676033a1d86a

SHA512
e347132271720e7a5116b1c2ee1fb64e43df8e6d07fd871747aa200b2ad94f790c5893ac82bef7c9768c95bd2e57606bbf1d9833140597129e12c4ebda192f3c

Download Submit
memory/1316-19-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1316-25-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1316-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1740-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1740-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1740-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1740-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1740-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download