amadey | 50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315

General

Target

50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe
Size

1.5MB
MD5

4097974a2c514d3b1feacd8749e98c3c
SHA1

83270abf417c64cc7edfe9270b2b176174d3aca4
SHA256

50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315
SHA512

9f1e4a659323d4ef80d82023373d714f137aa94417fd672a932a95aa437ea64c8bde0dee9230188327b77ce1f11946dc6045ccf2dfe55fd02071df4a3d37bd4f
SSDEEP

49152:XXn4/8uZG3gNtvcAe6q59Q9ITktllPWi9CN:XyG3ceAe6qQyTClleisN

Score

10^/10

amadey 18befc evasion themida trojan

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

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 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exeexplorku.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorku.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exeexplorku.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.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	50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe

Executes dropped EXE 1 IoCs

Processes:

explorku.exe

pid process

2604 explorku.exe
Loads dropped DLL 1 IoCs

Processes:

50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe

pid process

1992 50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe

pid	process
2604	explorku.exe

pid	process
1992	50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe

Themida packer 19 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1992-1-0x00000000013A0000-0x000000000188F000-memory.dmp	themida
behavioral1/memory/1992-2-0x00000000013A0000-0x000000000188F000-memory.dmp	themida
behavioral1/memory/1992-0-0x00000000013A0000-0x000000000188F000-memory.dmp	themida
behavioral1/memory/1992-3-0x00000000013A0000-0x000000000188F000-memory.dmp	themida
behavioral1/memory/1992-4-0x00000000013A0000-0x000000000188F000-memory.dmp	themida
behavioral1/memory/1992-6-0x00000000013A0000-0x000000000188F000-memory.dmp	themida
behavioral1/memory/1992-7-0x00000000013A0000-0x000000000188F000-memory.dmp	themida
behavioral1/memory/1992-5-0x00000000013A0000-0x000000000188F000-memory.dmp	themida
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe	themida
behavioral1/memory/2604-20-0x0000000000370000-0x000000000085F000-memory.dmp	themida
behavioral1/memory/2604-22-0x0000000000370000-0x000000000085F000-memory.dmp	themida
behavioral1/memory/2604-26-0x0000000000370000-0x000000000085F000-memory.dmp	themida
behavioral1/memory/2604-24-0x0000000000370000-0x000000000085F000-memory.dmp	themida
behavioral1/memory/2604-27-0x0000000000370000-0x000000000085F000-memory.dmp	themida
behavioral1/memory/2604-21-0x0000000000370000-0x000000000085F000-memory.dmp	themida
behavioral1/memory/2604-25-0x0000000000370000-0x000000000085F000-memory.dmp	themida
behavioral1/memory/2604-23-0x0000000000370000-0x000000000085F000-memory.dmp	themida
behavioral1/memory/1992-19-0x00000000013A0000-0x000000000188F000-memory.dmp	themida
behavioral1/memory/2604-29-0x0000000000370000-0x000000000085F000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exeexplorku.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	explorku.exe

Drops file in Windows directory 1 IoCs

Processes:

50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe

description ioc process

File created C:\Windows\Tasks\explorku.job 50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.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:

50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe

pid process

1992 50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe

description	ioc	process
File created	C:\Windows\Tasks\explorku.job	50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe

pid	process
1992	50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe

description	pid	process	target process
PID 1992 wrote to memory of 2604	1992	50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe	explorku.exe
PID 1992 wrote to memory of 2604	1992	50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe	explorku.exe
PID 1992 wrote to memory of 2604	1992	50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe	explorku.exe
PID 1992 wrote to memory of 2604	1992	50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe	explorku.exe

C:\Users\Admin\AppData\Local\Temp\50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe
"C:\Users\Admin\AppData\Local\Temp\50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1992

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:2604

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
Filesize
1.5MB

MD5
4097974a2c514d3b1feacd8749e98c3c

SHA1
83270abf417c64cc7edfe9270b2b176174d3aca4

SHA256
50a0b1f13ecc693a781b25c0bfb7e32bd4585bf6cc0c45655331df0d8ed03315

SHA512
9f1e4a659323d4ef80d82023373d714f137aa94417fd672a932a95aa437ea64c8bde0dee9230188327b77ce1f11946dc6045ccf2dfe55fd02071df4a3d37bd4f

Download Submit
memory/1992-19-0x00000000013A0000-0x000000000188F000-memory.dmp

Filesize
4.9MB

Download
memory/1992-2-0x00000000013A0000-0x000000000188F000-memory.dmp

Filesize
4.9MB

Download
memory/1992-0-0x00000000013A0000-0x000000000188F000-memory.dmp

Filesize
4.9MB

Download
memory/1992-3-0x00000000013A0000-0x000000000188F000-memory.dmp

Filesize
4.9MB

Download
memory/1992-4-0x00000000013A0000-0x000000000188F000-memory.dmp

Filesize
4.9MB

Download
memory/1992-6-0x00000000013A0000-0x000000000188F000-memory.dmp

Filesize
4.9MB

Download
memory/1992-7-0x00000000013A0000-0x000000000188F000-memory.dmp

Filesize
4.9MB

Download
memory/1992-5-0x00000000013A0000-0x000000000188F000-memory.dmp

Filesize
4.9MB

Download
memory/1992-9-0x0000000000450000-0x0000000000451000-memory.dmp

Filesize
4KB

Download
memory/1992-1-0x00000000013A0000-0x000000000188F000-memory.dmp

Filesize
4.9MB

Download
memory/2604-20-0x0000000000370000-0x000000000085F000-memory.dmp

Filesize
4.9MB

Download
memory/2604-26-0x0000000000370000-0x000000000085F000-memory.dmp

Filesize
4.9MB

Download
memory/2604-24-0x0000000000370000-0x000000000085F000-memory.dmp

Filesize
4.9MB

Download
memory/2604-27-0x0000000000370000-0x000000000085F000-memory.dmp

Filesize
4.9MB

Download
memory/2604-21-0x0000000000370000-0x000000000085F000-memory.dmp

Filesize
4.9MB

Download
memory/2604-25-0x0000000000370000-0x000000000085F000-memory.dmp

Filesize
4.9MB

Download
memory/2604-23-0x0000000000370000-0x000000000085F000-memory.dmp

Filesize
4.9MB

Download
memory/2604-22-0x0000000000370000-0x000000000085F000-memory.dmp

Filesize
4.9MB

Download
memory/2604-29-0x0000000000370000-0x000000000085F000-memory.dmp

Filesize
4.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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