Analysis
- max time kernel
150s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system - submitted
22/05/2024, 20:35
Behavioral task
behavioral1
Sample
8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe
Resource
win10v2004-20240226-en
11 signatures
150 seconds
General
- Target 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe
- Size 1.5MB
- Sample240522-zddvbafg52
- SHA256 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85
- MD5 8581e5e4ae637dd59fc3abc0acdbcd52
- SHA1 2996517e9d5c65dc1f71af464b63495921d0713d
- SHA512 647e13e1a6befd67a4ade265ee037362a34d93ee89ac5d9e4f796ce59308c138ac3fdd2820e0f387cef8a47a27be696ef312b903ace25bb922806b067952a5c7
- SSDEEP 24576:4nze2JrAL+5o43HGm2RDiyVG8mo34EuYNcK5H6valfaW/p0UVvcVXZix:ce235f+0yVSIa5whaxUqVi
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Family
-
amadey
Version
-
4.20
Botnet
-
18befc
C2
-
http://5.42.96.141
Attributes
-
install_dir
908f070dff
-
install_file
explorku.exe
-
strings_key
b25a9385246248a95c600f9a061438e1
-
url_paths
/go34ko8/index.php
rc4.plain
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 5 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorku.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorku.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorku.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorku.exe - Checks BIOS information in registry 2 TTPs 10 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorku.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorku.exe - Executes dropped EXE 4 IoCs
pid Process 980 explorku.exe 4232 explorku.exe 3964 explorku.exe 3904 explorku.exe -
resource yara_rule behavioral2/memory/4904-0-0x00000000000A0000-0x000000000057E000-memory.dmp themida behavioral2/memory/4904-1-0x00000000000A0000-0x000000000057E000-memory.dmp themida behavioral2/memory/4904-2-0x00000000000A0000-0x000000000057E000-memory.dmp themida behavioral2/memory/4904-4-0x00000000000A0000-0x000000000057E000-memory.dmp themida behavioral2/memory/4904-8-0x00000000000A0000-0x000000000057E000-memory.dmp themida behavioral2/memory/4904-7-0x00000000000A0000-0x000000000057E000-memory.dmp themida behavioral2/memory/4904-6-0x00000000000A0000-0x000000000057E000-memory.dmp themida behavioral2/memory/4904-3-0x00000000000A0000-0x000000000057E000-memory.dmp themida behavioral2/memory/4904-5-0x00000000000A0000-0x000000000057E000-memory.dmp themida behavioral2/files/0x000100000002aa13-14.dat themida behavioral2/memory/4904-21-0x00000000000A0000-0x000000000057E000-memory.dmp themida behavioral2/memory/980-22-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/980-23-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/980-25-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/980-29-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/980-28-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/980-27-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/980-26-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/980-24-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/980-30-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/4232-32-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/4232-33-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/4232-34-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/4232-38-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/4232-37-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/4232-35-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/4232-36-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/4232-39-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/4232-40-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/980-41-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3964-49-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3964-53-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3964-55-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3964-51-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3964-52-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3964-50-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3964-54-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3964-56-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3904-65-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3904-69-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3904-70-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3904-68-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3904-67-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3904-66-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3904-64-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3904-71-0x0000000000D00000-0x00000000011DE000-memory.dmp themida behavioral2/memory/3904-72-0x0000000000D00000-0x00000000011DE000-memory.dmp themida -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA explorku.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA explorku.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA explorku.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA explorku.exe - Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\Tasks\explorku.job 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4904 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4904 wrote to memory of 980 4904 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe 78 PID 4904 wrote to memory of 980 4904 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe 78 PID 4904 wrote to memory of 980 4904 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe 78
Processes
-
C:\Users\Admin\AppData\Local\Temp\8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe"C:\Users\Admin\AppData\Local\Temp\8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4904 -
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe"C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
PID:980
-
-
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exeC:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
PID:4232
-
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exeC:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
PID:3964
-
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exeC:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
PID:3904
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
- Size 1.5MB
- SHA256 8f53811c1d4a72d6a8e0aa9014a2465ccace71b1f087de4f9ddf7470a7fa3c85
- MD5 8581e5e4ae637dd59fc3abc0acdbcd52
- SHA1 2996517e9d5c65dc1f71af464b63495921d0713d
- SHA512 647e13e1a6befd67a4ade265ee037362a34d93ee89ac5d9e4f796ce59308c138ac3fdd2820e0f387cef8a47a27be696ef312b903ace25bb922806b067952a5c7
- SSDEEP 24576:4nze2JrAL+5o43HGm2RDiyVG8mo34EuYNcK5H6valfaW/p0UVvcVXZix:ce235f+0yVSIa5whaxUqVi
- MD5 SHA1 SHA512 SSDEEP