amadey | 83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c

General

Target

83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe
Size

1.5MB
MD5

a97ae966f6d1ba6ce5974e8e75b5547c
SHA1

fe25fa6d3b8bd1011dbd75679d5c2d2fa104c1d5
SHA256

83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c
SHA512

cdd531ec256ac307ac83293498cf310447f6365669735f40c272475ceeb522307a809181066343ad51f0c519fa9a10041673c13b9865b73fa17de19222544c5d
SSDEEP

49152:SHPkE3TgFQbKDH2reQaBrik54R6ErutPT8nD:8cE3amKDH+edJ541KtPT2

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 5 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exeexplorku.exeexplorku.exeexplorku.exeexplorku.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.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.

Query Registry

T1012

System Information Discovery

T1082

Processes:

explorku.exe83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exeexplorku.exeexplorku.exeexplorku.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.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\VideoBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe

Executes dropped EXE 4 IoCs

Processes:

explorku.exeexplorku.exeexplorku.exeexplorku.exe

pid process

2988 explorku.exe
2788 explorku.exe
4568 explorku.exe
4816 explorku.exe

pid	process
2988	explorku.exe
2788	explorku.exe
4568	explorku.exe
4816	explorku.exe

Themida packer 46 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/400-0-0x0000000000830000-0x0000000000D14000-memory.dmp	themida
behavioral1/memory/400-1-0x0000000000830000-0x0000000000D14000-memory.dmp	themida
behavioral1/memory/400-2-0x0000000000830000-0x0000000000D14000-memory.dmp	themida
behavioral1/memory/400-3-0x0000000000830000-0x0000000000D14000-memory.dmp	themida
behavioral1/memory/400-7-0x0000000000830000-0x0000000000D14000-memory.dmp	themida
behavioral1/memory/400-6-0x0000000000830000-0x0000000000D14000-memory.dmp	themida
behavioral1/memory/400-5-0x0000000000830000-0x0000000000D14000-memory.dmp	themida
behavioral1/memory/400-4-0x0000000000830000-0x0000000000D14000-memory.dmp	themida
behavioral1/memory/400-8-0x0000000000830000-0x0000000000D14000-memory.dmp	themida
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe	themida
behavioral1/memory/2988-22-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2988-24-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2988-30-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2988-29-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2988-28-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2988-25-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2988-26-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2988-27-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2988-23-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/400-21-0x0000000000830000-0x0000000000D14000-memory.dmp	themida
behavioral1/memory/2988-31-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2788-34-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2788-37-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2788-40-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2788-41-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2788-39-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2788-38-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2788-36-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2788-35-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2788-42-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/2788-43-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4568-51-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4568-56-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4568-58-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4568-57-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4568-55-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4568-52-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4568-53-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4568-54-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4568-60-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4816-68-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4816-69-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4816-73-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4816-72-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4816-71-0x0000000000D20000-0x0000000001204000-memory.dmp	themida
behavioral1/memory/4816-70-0x0000000000D20000-0x0000000001204000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 5 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

explorku.exeexplorku.exeexplorku.exeexplorku.exe83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.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	explorku.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe

Drops file in Windows directory 1 IoCs

Processes:

83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe

description ioc process

File created C:\Windows\Tasks\explorku.job 83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.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	83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe

description	pid	process	target process
PID 400 wrote to memory of 2988	400	83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe	explorku.exe
PID 400 wrote to memory of 2988	400	83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe	explorku.exe
PID 400 wrote to memory of 2988	400	83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe	explorku.exe

C:\Users\Admin\AppData\Local\Temp\83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe
"C:\Users\Admin\AppData\Local\Temp\83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:400

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:2988

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:2788

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:4568

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:4816

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

MD5
a97ae966f6d1ba6ce5974e8e75b5547c

SHA1
fe25fa6d3b8bd1011dbd75679d5c2d2fa104c1d5

SHA256
83c5234a278b60f82ab7abcd55d50c18c6b5b594fcda4cfddf59906ffc5a476c

SHA512
cdd531ec256ac307ac83293498cf310447f6365669735f40c272475ceeb522307a809181066343ad51f0c519fa9a10041673c13b9865b73fa17de19222544c5d

Download Submit
memory/400-0-0x0000000000830000-0x0000000000D14000-memory.dmp

Filesize
4.9MB

Download
memory/400-1-0x0000000000830000-0x0000000000D14000-memory.dmp

Filesize
4.9MB

Download
memory/400-2-0x0000000000830000-0x0000000000D14000-memory.dmp

Filesize
4.9MB

Download
memory/400-3-0x0000000000830000-0x0000000000D14000-memory.dmp

Filesize
4.9MB

Download
memory/400-7-0x0000000000830000-0x0000000000D14000-memory.dmp

Filesize
4.9MB

Download
memory/400-6-0x0000000000830000-0x0000000000D14000-memory.dmp

Filesize
4.9MB

Download
memory/400-5-0x0000000000830000-0x0000000000D14000-memory.dmp

Filesize
4.9MB

Download
memory/400-4-0x0000000000830000-0x0000000000D14000-memory.dmp

Filesize
4.9MB

Download
memory/400-8-0x0000000000830000-0x0000000000D14000-memory.dmp

Filesize
4.9MB

Download
memory/400-21-0x0000000000830000-0x0000000000D14000-memory.dmp

Filesize
4.9MB

Download
memory/2788-43-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2788-42-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2788-35-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2788-36-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2788-38-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2788-39-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2788-41-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2788-40-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2788-34-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2788-37-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2988-24-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2988-31-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2988-23-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2988-27-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2988-26-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2988-25-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2988-28-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2988-29-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2988-30-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/2988-22-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4568-57-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4568-54-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4568-58-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4568-51-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4568-55-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4568-52-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4568-53-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4568-56-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4568-60-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4816-68-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4816-69-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4816-73-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4816-72-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4816-71-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download
memory/4816-70-0x0000000000D20000-0x0000000001204000-memory.dmp

Filesize
4.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads