74b275699ccc1ec68310f33061b621e1ba524a4111566fbc4adcd928cf4429e5

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
14/09/2024, 06:27

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General

Target

2024-09-14_40983b8a8984f816acbfec2d5a7db8f8_cryptolocker.exe
Size

67KB
MD5

40983b8a8984f816acbfec2d5a7db8f8
SHA1

af6b4b19cc5ecb74af3c1ede59bdc0f24a4db1e9
SHA256

74b275699ccc1ec68310f33061b621e1ba524a4111566fbc4adcd928cf4429e5
SHA512

bf12155f393143ee1ef1ef68416ab68bfe81dee8e47e871f1327c22a7d25286158837026f47d777f5d481dfe0789140fb8b76f75176cc6ab50dc5c9663b19aca
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYZ8xDyfL:1nK6a+qdOOtEvwDpjY

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	2024-09-14_40983b8a8984f816acbfec2d5a7db8f8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
220	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/872-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x00080000000234d6-13.dat	upx
behavioral2/memory/872-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/220-26-0x0000000000500000-0x000000000050F311-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	2024-09-14_40983b8a8984f816acbfec2d5a7db8f8_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 872 wrote to memory of 220	872	2024-09-14_40983b8a8984f816acbfec2d5a7db8f8_cryptolocker.exe	83
PID 872 wrote to memory of 220	872	2024-09-14_40983b8a8984f816acbfec2d5a7db8f8_cryptolocker.exe	83
PID 872 wrote to memory of 220	872	2024-09-14_40983b8a8984f816acbfec2d5a7db8f8_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-09-14_40983b8a8984f816acbfec2d5a7db8f8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-14_40983b8a8984f816acbfec2d5a7db8f8_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:872
- 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:220

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
67KB

MD5
c72a28667684a1f8d24234cc21d4d74f

SHA1
48fe9cb560615b225c159b69d84b7be9ab65780c

SHA256
4b117547da7e84e884d8211befb1daa3502f4e8943923a9d9eef18d09c90732c

SHA512
b54315a706642f6c20dd79001f50e6c8362c1b47877788e214172470a0016997de14145668fade0262408d10c6db43ea86ee81bbb4d55a4fb6de542b21f5d653

Download Submit
memory/220-20-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/220-19-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/220-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/872-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/872-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/872-2-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/872-3-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/872-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download