3cd6a5271aa748854727c39af3bd20c6530fc47e1f035ea3116b80e861a576a2

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17/10/2024, 16:31

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General

Target

2024-10-17_ac6935954c5bb10e95ee3dac396cf852_cryptolocker.exe
Size

60KB
MD5

ac6935954c5bb10e95ee3dac396cf852
SHA1

a5f8c587943a854aa43f07e89399104da6d0d1f4
SHA256

3cd6a5271aa748854727c39af3bd20c6530fc47e1f035ea3116b80e861a576a2
SHA512

d9c52f56817e55dd96eb352402b5f161b1ef242e9493c86bb5b0d2786aa33c30377ed4871fe08c43e6696f4e891ece60a9d80f6181d188b803357f290e128e59
SSDEEP

768:P8mnjO6LsoEEeegiZPvEhHSG+gbum/kLyMro2GtOOtEvwDpjKvWxHCbSVaFn0jKt:P8mnK6QFElP6n+gymddpMOtEvwDpjYL

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2024-10-17_ac6935954c5bb10e95ee3dac396cf852_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4788	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2484-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x000c000000023b7a-13.dat	upx
behavioral2/memory/2484-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/4788-26-0x0000000000500000-0x000000000050F311-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	2024-10-17_ac6935954c5bb10e95ee3dac396cf852_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 2484 wrote to memory of 4788	2484	2024-10-17_ac6935954c5bb10e95ee3dac396cf852_cryptolocker.exe	85
PID 2484 wrote to memory of 4788	2484	2024-10-17_ac6935954c5bb10e95ee3dac396cf852_cryptolocker.exe	85
PID 2484 wrote to memory of 4788	2484	2024-10-17_ac6935954c5bb10e95ee3dac396cf852_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-17_ac6935954c5bb10e95ee3dac396cf852_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-17_ac6935954c5bb10e95ee3dac396cf852_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2484
- 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:4788

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\asih.exe

Filesize
60KB

MD5
20a73b184107f8411b4505e86459338e

SHA1
0456999cf737249454db247eda4a7c8d175e949c

SHA256
0c02598dfbd737ca3857273f3ab46c06d3c3d3fddb7e7ff95220eeaa4929bcf7

SHA512
2956e09967fe58d3c37341c7a32124daeeedc27efcc7c7fb2c19c5b3780da50425803f9024706d568d69d37ff4362f576480f1ae141324711b1db162349a87ea

Download Submit
memory/2484-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2484-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/2484-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/2484-3-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/2484-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4788-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4788-25-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/4788-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download