amadey | 28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e

Analysis

max time kernel
146s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
22-05-2024 19:25

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General

Target

28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exe
Size

1.6MB
MD5

00f33aeca32a3cd0124e7c2fdaca3df4
SHA1

bf3bd6d7ef50aec7e9a47c6cbeaabc6baf2407b3
SHA256

28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e
SHA512

51a3f8f6c19d2b2822ee640556a1840545e6de8e525346ce7c250bc57f0736f129a2bf8cd1bcde47e07722d128d1476c43dfa603c92225c64abcb3f119e90f5a
SSDEEP

24576:MgUlR6LReTNZJFwrJtt/IU36AtiE/DzkTLb3l9vd2Kms43R05k0KR5YPIWSwM:67690wrTZN36g76LT2P05kPYCwM

Score

10^/10

amadey 18befc evasion themida trojan

Malware Config

Extracted

Family

amadey

Version

4.20

Botnet

18befc

http://5.42.96.141

Attributes

install_dir
908f070dff
install_file
explorku.exe
strings_key
b25a9385246248a95c600f9a061438e1
url_paths
/go34ko8/index.php

rc4.plain

Signatures

Amadey
Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.
trojan amadey

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 4 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exeexplorku.exeexplorku.exeexplorku.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.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 8 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

explorku.exeexplorku.exe28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exeexplorku.exe

description	ioc	process
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	28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.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

Executes dropped EXE 3 IoCs

Processes:

explorku.exeexplorku.exeexplorku.exe

pid process

4628 explorku.exe
2836 explorku.exe
1264 explorku.exe

pid	process
4628	explorku.exe
2836	explorku.exe
1264	explorku.exe

Themida packer 40 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/32-1-0x0000000000C20000-0x000000000111D000-memory.dmp	themida
behavioral2/memory/32-2-0x0000000000C20000-0x000000000111D000-memory.dmp	themida
behavioral2/memory/32-3-0x0000000000C20000-0x000000000111D000-memory.dmp	themida
behavioral2/memory/32-0-0x0000000000C20000-0x000000000111D000-memory.dmp	themida
behavioral2/memory/32-4-0x0000000000C20000-0x000000000111D000-memory.dmp	themida
behavioral2/memory/32-7-0x0000000000C20000-0x000000000111D000-memory.dmp	themida
behavioral2/memory/32-8-0x0000000000C20000-0x000000000111D000-memory.dmp	themida
behavioral2/memory/32-6-0x0000000000C20000-0x000000000111D000-memory.dmp	themida
behavioral2/memory/32-5-0x0000000000C20000-0x000000000111D000-memory.dmp	themida
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe	themida
behavioral2/memory/32-21-0x0000000000C20000-0x000000000111D000-memory.dmp	themida
behavioral2/memory/4628-24-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/4628-23-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/4628-29-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/4628-30-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/4628-28-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/4628-27-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/4628-26-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/4628-22-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/4628-25-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/4628-31-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/2836-39-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/2836-44-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/2836-43-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/2836-42-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/2836-41-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/2836-40-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/2836-37-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/2836-38-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/2836-36-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/2836-45-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/1264-56-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/1264-54-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/1264-59-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/1264-60-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/1264-58-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/1264-57-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/1264-55-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/1264-53-0x0000000000140000-0x000000000063D000-memory.dmp	themida
behavioral2/memory/1264-61-0x0000000000140000-0x000000000063D000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 4 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exeexplorku.exeexplorku.exeexplorku.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.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	explorku.exe

Drops file in Windows directory 1 IoCs

Processes:

28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exe

description ioc process

File created C:\Windows\Tasks\explorku.job 28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
File created	C:\Windows\Tasks\explorku.job	28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exe

description	pid	process	target process
PID 32 wrote to memory of 4628	32	28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exe	explorku.exe
PID 32 wrote to memory of 4628	32	28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exe	explorku.exe
PID 32 wrote to memory of 4628	32	28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exe	explorku.exe

C:\Users\Admin\AppData\Local\Temp\28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.exe
"C:\Users\Admin\AppData\Local\Temp\28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e.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 WriteProcessMemory
PID:32
- 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:4628

C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
PID:2836

C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
PID:1264

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe

Filesize
1.6MB

MD5
00f33aeca32a3cd0124e7c2fdaca3df4

SHA1
bf3bd6d7ef50aec7e9a47c6cbeaabc6baf2407b3

SHA256
28b24c50af0a130e1bdfd0c6f2ea1ffc2253d9fd678f90db170c63d31b1ca74e

SHA512
51a3f8f6c19d2b2822ee640556a1840545e6de8e525346ce7c250bc57f0736f129a2bf8cd1bcde47e07722d128d1476c43dfa603c92225c64abcb3f119e90f5a

Download Submit
memory/32-21-0x0000000000C20000-0x000000000111D000-memory.dmp

Filesize
5.0MB

Download
memory/32-1-0x0000000000C20000-0x000000000111D000-memory.dmp

Filesize
5.0MB

Download
memory/32-2-0x0000000000C20000-0x000000000111D000-memory.dmp

Filesize
5.0MB

Download
memory/32-4-0x0000000000C20000-0x000000000111D000-memory.dmp

Filesize
5.0MB

Download
memory/32-7-0x0000000000C20000-0x000000000111D000-memory.dmp

Filesize
5.0MB

Download
memory/32-8-0x0000000000C20000-0x000000000111D000-memory.dmp

Filesize
5.0MB

Download
memory/32-6-0x0000000000C20000-0x000000000111D000-memory.dmp

Filesize
5.0MB

Download
memory/32-5-0x0000000000C20000-0x000000000111D000-memory.dmp

Filesize
5.0MB

Download
memory/32-0-0x0000000000C20000-0x000000000111D000-memory.dmp

Filesize
5.0MB

Download
memory/32-3-0x0000000000C20000-0x000000000111D000-memory.dmp

Filesize
5.0MB

Download
memory/1264-56-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/1264-61-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/1264-55-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/1264-57-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/1264-58-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/1264-60-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/1264-59-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/1264-54-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/1264-53-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/2836-45-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/2836-39-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/2836-44-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/2836-43-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/2836-42-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/2836-41-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/2836-40-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/2836-37-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/2836-38-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/2836-36-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/4628-31-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/4628-25-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/4628-22-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/4628-26-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/4628-27-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/4628-28-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/4628-30-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/4628-29-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/4628-23-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download
memory/4628-24-0x0000000000140000-0x000000000063D000-memory.dmp

Filesize
5.0MB

Download