4b0e0cf8aa736fc191df5fb2c0cd4618174c32392ab339653fadef60ff0537c9

Analysis

max time kernel
131s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28/09/2024, 04:42

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General

Target

2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe
Size

75KB
MD5

885c87be990086ab99f1474351d94ed3
SHA1

574a7f5b9e6b08f70558f6abe490aa646022adae
SHA256

4b0e0cf8aa736fc191df5fb2c0cd4618174c32392ab339653fadef60ff0537c9
SHA512

55b07b64d2f04285c7ca91d696f03e74da3ac5d32dbe4d353f2e4bc2b2616604cc3d94c77ba9a69e4e7dc77f40130db47d802d0b356103153a85e566ae41f9f8
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdw:T6a+rdOOtEvwDpjNti

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	2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2164	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4516-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00080000000234d6-13.dat	upx
behavioral2/memory/4516-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2164-26-0x0000000000500000-0x0000000000510000-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	2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4516 wrote to memory of 2164	4516	2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe	82
PID 4516 wrote to memory of 2164	4516	2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe	82
PID 4516 wrote to memory of 2164	4516	2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4516
- 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:2164

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
75KB

MD5
3ab69c0a2dbb4504958b20f7d09db2f5

SHA1
b5a85335ef3a829f20c69a4a8bafbf31aad54361

SHA256
40ec9acb6132442ca0ed6e07b7e60098644721d4bb4dd0ed95ec90fdefa23731

SHA512
b11eff828dda943c0bbbe06ff4378071f93d9fcd48332baaecd743e66da721c4f34cc8abe5006a7adb7059b2793e8f133b0506e626e1534a47fbc921acd93c85

Download Submit
memory/2164-19-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2164-20-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/2164-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4516-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4516-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4516-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4516-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4516-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download