amadey | bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c

Analysis

max time kernel
143s
max time network
93s
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 14:26

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General

Target

bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exe
Size

1.7MB
MD5

c530b19d05cbff158b64157a3c543fb8
SHA1

dfeeb8c74a058b43da2d3e23bc4cd61db1d2e7c2
SHA256

bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c
SHA512

69d07dc438f40446e6ccf5e7deb926122142137829f6f3c053bba4a8b06fd29c7ea563652bdeb3e470a7f054e8290379e1a13d842b6d9901d3999a1a69fdb32a
SSDEEP

24576:MZ25nQvFuebxBDwJ/195rIA9Fkq4ijfA4NIztm9SeWEUkQjfBosrAbN35yfs5PNM:HQvFuSQHRpNat6OkDsri3YfsRAl

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 5 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

explorku.exeexplorku.exeexplorku.exeexplorku.exebd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exe

description	ioc	process
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
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exe

Checks BIOS information in registry 2 TTPs 10 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exeexplorku.exeexplorku.exeexplorku.exeexplorku.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.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	bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.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	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorku.exe

Executes dropped EXE 4 IoCs

Processes:

explorku.exeexplorku.exeexplorku.exeexplorku.exe

pid process

3148 explorku.exe
2684 explorku.exe
3768 explorku.exe
2524 explorku.exe

pid	process
3148	explorku.exe
2684	explorku.exe
3768	explorku.exe
2524	explorku.exe

Themida packer 43 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/4384-0-0x0000000000910000-0x0000000000E5B000-memory.dmp	themida
behavioral2/memory/4384-1-0x0000000000910000-0x0000000000E5B000-memory.dmp	themida
behavioral2/memory/4384-2-0x0000000000910000-0x0000000000E5B000-memory.dmp	themida
behavioral2/memory/4384-7-0x0000000000910000-0x0000000000E5B000-memory.dmp	themida
behavioral2/memory/4384-6-0x0000000000910000-0x0000000000E5B000-memory.dmp	themida
behavioral2/memory/4384-5-0x0000000000910000-0x0000000000E5B000-memory.dmp	themida
behavioral2/memory/4384-4-0x0000000000910000-0x0000000000E5B000-memory.dmp	themida
behavioral2/memory/4384-3-0x0000000000910000-0x0000000000E5B000-memory.dmp	themida
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe	themida
behavioral2/memory/4384-18-0x0000000000910000-0x0000000000E5B000-memory.dmp	themida
behavioral2/memory/3148-20-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3148-22-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3148-24-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3148-25-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3148-28-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3148-27-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3148-26-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3148-23-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3148-29-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2684-32-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2684-36-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2684-37-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2684-35-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2684-33-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2684-34-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2684-31-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2684-38-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3768-47-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3768-51-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3768-50-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3768-49-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3768-48-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3768-46-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3768-53-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/3768-52-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2524-61-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2524-62-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2524-67-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2524-66-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2524-65-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2524-63-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2524-64-0x0000000000B10000-0x000000000105B000-memory.dmp	themida
behavioral2/memory/2524-69-0x0000000000B10000-0x000000000105B000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 5 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

explorku.exeexplorku.exeexplorku.exebd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exeexplorku.exe

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	bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	explorku.exe

Drops file in Windows directory 1 IoCs

Processes:

bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exe

description ioc process

File created C:\Windows\Tasks\explorku.job bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.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	bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exe

description	pid	process	target process
PID 4384 wrote to memory of 3148	4384	bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exe	explorku.exe
PID 4384 wrote to memory of 3148	4384	bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exe	explorku.exe
PID 4384 wrote to memory of 3148	4384	bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exe	explorku.exe

C:\Users\Admin\AppData\Local\Temp\bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.exe
"C:\Users\Admin\AppData\Local\Temp\bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c.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:4384
- 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:3148

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:2684

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:3768

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:2524

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
1.7MB

MD5
c530b19d05cbff158b64157a3c543fb8

SHA1
dfeeb8c74a058b43da2d3e23bc4cd61db1d2e7c2

SHA256
bd8d5f856e0e641c756a08628a6bf69f490b76e035ed2f27889c6d80d97ba88c

SHA512
69d07dc438f40446e6ccf5e7deb926122142137829f6f3c053bba4a8b06fd29c7ea563652bdeb3e470a7f054e8290379e1a13d842b6d9901d3999a1a69fdb32a

Download Submit
memory/2524-65-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2524-62-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2524-63-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2524-66-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2524-61-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2524-67-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2524-64-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2524-69-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2684-32-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2684-38-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2684-31-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2684-34-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2684-33-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2684-35-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2684-37-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/2684-36-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3148-20-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3148-29-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3148-23-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3148-26-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3148-27-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3148-28-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3148-25-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3148-24-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3148-22-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3768-49-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3768-52-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3768-51-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3768-50-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3768-47-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3768-48-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3768-46-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/3768-53-0x0000000000B10000-0x000000000105B000-memory.dmp

Filesize
5.3MB

Download
memory/4384-18-0x0000000000910000-0x0000000000E5B000-memory.dmp

Filesize
5.3MB

Download
memory/4384-0-0x0000000000910000-0x0000000000E5B000-memory.dmp

Filesize
5.3MB

Download
memory/4384-3-0x0000000000910000-0x0000000000E5B000-memory.dmp

Filesize
5.3MB

Download
memory/4384-4-0x0000000000910000-0x0000000000E5B000-memory.dmp

Filesize
5.3MB

Download
memory/4384-5-0x0000000000910000-0x0000000000E5B000-memory.dmp

Filesize
5.3MB

Download
memory/4384-6-0x0000000000910000-0x0000000000E5B000-memory.dmp

Filesize
5.3MB

Download
memory/4384-7-0x0000000000910000-0x0000000000E5B000-memory.dmp

Filesize
5.3MB

Download
memory/4384-2-0x0000000000910000-0x0000000000E5B000-memory.dmp

Filesize
5.3MB

Download
memory/4384-1-0x0000000000910000-0x0000000000E5B000-memory.dmp

Filesize
5.3MB

Download