cf82485175684f5185c8673666d4649f60ea811e07fb963481a03c7c0ed1a925

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
19-09-2024 06:26

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General

Target

2024-09-19_5d601b48f3cd8ae812ccdc1d33fd08d1_cryptolocker.exe
Size

40KB
MD5

5d601b48f3cd8ae812ccdc1d33fd08d1
SHA1

375192c278d8e87d5f35323a5581b4f1fe7ff0cf
SHA256

cf82485175684f5185c8673666d4649f60ea811e07fb963481a03c7c0ed1a925
SHA512

c28385d25ec9c2c09da6c50d5d4dfacf00a3d1b069b012690dc6d1e86542d767ba23beb6ad1a050b1d16fa254fb78e3e6fc43aec21d24c4d737f6f42611ea83e
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5aFr7YOzzOSI7L:qUmnpomddpMOtEvwDpjjaYaFACI/

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	2024-09-19_5d601b48f3cd8ae812ccdc1d33fd08d1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1580	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4032-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00090000000233ba-13.dat	upx
behavioral2/memory/4032-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1580-27-0x0000000000500000-0x000000000050F000-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	2024-09-19_5d601b48f3cd8ae812ccdc1d33fd08d1_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 4032 wrote to memory of 1580	4032	2024-09-19_5d601b48f3cd8ae812ccdc1d33fd08d1_cryptolocker.exe	81
PID 4032 wrote to memory of 1580	4032	2024-09-19_5d601b48f3cd8ae812ccdc1d33fd08d1_cryptolocker.exe	81
PID 4032 wrote to memory of 1580	4032	2024-09-19_5d601b48f3cd8ae812ccdc1d33fd08d1_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-09-19_5d601b48f3cd8ae812ccdc1d33fd08d1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_5d601b48f3cd8ae812ccdc1d33fd08d1_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4032
- 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:1580

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
41KB

MD5
0a18feb54a70855fc161062e043f445a

SHA1
698d0b07a012ade8bd1c7b4043d990015ad8aa4a

SHA256
05f39d57db29d5d52de1bfbd5fa1c1b3d1c496fe835e347c2ed5c63fbf2b299e

SHA512
03c72d086b04d46cc79e449f87cbcb6858b94fb481145a4b0dcfeb57dfb079d41951db2b94a893542d3fa463896dc050579334cb31da65c43986a10114dff435

Download Submit
memory/1580-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1580-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1580-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4032-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4032-1-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/4032-2-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/4032-3-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download
memory/4032-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download