amadey | 794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664

Analysis

max time kernel
141s
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 11:55

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General

Target

794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe
Size

1.7MB
MD5

0da80aa0406571a39ff7f49fc6fc8f75
SHA1

5321c6eb71184c214b0d3392b41ec795149b4cf7
SHA256

794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664
SHA512

328d32f2055cce3e007f06c67b19b3c4ca406fa45636eb275aac83e5b1772e0dcbffd853306b59c84b5fd8d879fa0420063b8ec5964f9ce04004bef6a965f673
SSDEEP

24576:0xxfqp226A30HV6mHPnTrxej5thPaSRyc09AgHredyEqvQM1iWvdhZut3:hn6A8BvRej5PucJCreQpvV1i6hwx

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.exe794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exeexplorku.exeexplorku.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__	794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.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.

Query Registry

T1012

System Information Discovery

T1082

Processes:

explorku.exeexplorku.exeexplorku.exe794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exeexplorku.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	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	794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.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\VideoBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorku.exe

Executes dropped EXE 4 IoCs

Processes:

explorku.exeexplorku.exeexplorku.exeexplorku.exe

pid process

3900 explorku.exe
1920 explorku.exe
3408 explorku.exe
1208 explorku.exe

pid	process
3900	explorku.exe
1920	explorku.exe
3408	explorku.exe
1208	explorku.exe

Themida packer 45 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/1100-0-0x0000000000240000-0x000000000078E000-memory.dmp	themida
behavioral2/memory/1100-2-0x0000000000240000-0x000000000078E000-memory.dmp	themida
behavioral2/memory/1100-1-0x0000000000240000-0x000000000078E000-memory.dmp	themida
behavioral2/memory/1100-4-0x0000000000240000-0x000000000078E000-memory.dmp	themida
behavioral2/memory/1100-3-0x0000000000240000-0x000000000078E000-memory.dmp	themida
behavioral2/memory/1100-6-0x0000000000240000-0x000000000078E000-memory.dmp	themida
behavioral2/memory/1100-5-0x0000000000240000-0x000000000078E000-memory.dmp	themida
behavioral2/memory/1100-7-0x0000000000240000-0x000000000078E000-memory.dmp	themida
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe	themida
behavioral2/memory/1100-20-0x0000000000240000-0x000000000078E000-memory.dmp	themida
behavioral2/memory/3900-19-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3900-22-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3900-26-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3900-28-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3900-27-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3900-25-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3900-24-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3900-23-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1920-31-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1920-36-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1920-35-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1920-33-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1920-34-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1920-32-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1920-30-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1920-37-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3900-38-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3408-45-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3408-46-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3408-48-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3408-47-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3408-49-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3408-52-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3408-51-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3408-50-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/3408-53-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1208-61-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1208-63-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1208-66-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1208-68-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1208-67-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1208-65-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1208-62-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1208-64-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida
behavioral2/memory/1208-69-0x0000000000AE0000-0x000000000102E000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 5 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

explorku.exe794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exeexplorku.exeexplorku.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	794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.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:

794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe

description ioc process

File created C:\Windows\Tasks\explorku.job 794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe

pid process

1100 794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe

description	ioc	process
File created	C:\Windows\Tasks\explorku.job	794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe

pid	process
1100	794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe

description	pid	process	target process
PID 1100 wrote to memory of 3900	1100	794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe	explorku.exe
PID 1100 wrote to memory of 3900	1100	794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe	explorku.exe
PID 1100 wrote to memory of 3900	1100	794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe	explorku.exe

C:\Users\Admin\AppData\Local\Temp\794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.exe
"C:\Users\Admin\AppData\Local\Temp\794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664.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:1100
- 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:3900

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:1920

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:3408

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:1208

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

Replay Monitor

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Downloads

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

Filesize
1.7MB

MD5
0da80aa0406571a39ff7f49fc6fc8f75

SHA1
5321c6eb71184c214b0d3392b41ec795149b4cf7

SHA256
794c1f1f083c573a5c155f13140a7d83e250020d735343775176c035ec953664

SHA512
328d32f2055cce3e007f06c67b19b3c4ca406fa45636eb275aac83e5b1772e0dcbffd853306b59c84b5fd8d879fa0420063b8ec5964f9ce04004bef6a965f673

Download Submit
memory/1100-0-0x0000000000240000-0x000000000078E000-memory.dmp

Filesize
5.3MB

Download
memory/1100-2-0x0000000000240000-0x000000000078E000-memory.dmp

Filesize
5.3MB

Download
memory/1100-1-0x0000000000240000-0x000000000078E000-memory.dmp

Filesize
5.3MB

Download
memory/1100-4-0x0000000000240000-0x000000000078E000-memory.dmp

Filesize
5.3MB

Download
memory/1100-3-0x0000000000240000-0x000000000078E000-memory.dmp

Filesize
5.3MB

Download
memory/1100-6-0x0000000000240000-0x000000000078E000-memory.dmp

Filesize
5.3MB

Download
memory/1100-5-0x0000000000240000-0x000000000078E000-memory.dmp

Filesize
5.3MB

Download
memory/1100-7-0x0000000000240000-0x000000000078E000-memory.dmp

Filesize
5.3MB

Download
memory/1100-20-0x0000000000240000-0x000000000078E000-memory.dmp

Filesize
5.3MB

Download
memory/1208-62-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1208-64-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1208-69-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1208-65-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1208-67-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1208-68-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1208-66-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1208-63-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1208-61-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1920-36-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1920-35-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1920-33-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1920-34-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1920-32-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1920-30-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1920-37-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/1920-31-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3408-51-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3408-46-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3408-48-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3408-47-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3408-49-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3408-52-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3408-45-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3408-50-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3408-53-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3900-38-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3900-23-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3900-24-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3900-25-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3900-27-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3900-28-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3900-26-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3900-22-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download
memory/3900-19-0x0000000000AE0000-0x000000000102E000-memory.dmp

Filesize
5.3MB

Download