amadey | d46a8fa545385ab42ca58f6175b13f4b9989d88322ab624f646623b4a52a4876

Analysis

max time kernel
149s
max time network
153s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
29-06-2024 12:20

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General

Target

chrosha.exe
Size

1.8MB
MD5

73d73c48859fc7aa4fd78d9a57f859d6
SHA1

c1f71ea0692d97c653ff5a5ecbc03fd02173fe05
SHA256

d46a8fa545385ab42ca58f6175b13f4b9989d88322ab624f646623b4a52a4876
SHA512

f0634be539582016c03e83f3ca58d613fc16abcc0a9c320321f455234a8f2dc1c199fc52187abac5e4cbbe7b7907afdaa89813f50cbecd611f7e870ee7f8e979
SSDEEP

24576:Snk5YKXHSuRlxqOd8pF2h99TqJWVs/ae2c01R/QTS5I0aQrnnuls5py6sDya:0YNxd7h9hqJ2s/ae10e0aiCKrsu

Score

10^/10

amadey 090bb7 evasion trojan

Malware Config

Extracted

Family

amadey

Version

4.17

Botnet

090bb7

http://193.233.132.167

Attributes

install_dir
4d0ab15804
install_file
chrosha.exe
strings_key
1a9519d7b465e1f4880fa09a6162d768
url_paths
/enigma/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:

chrosha.exechrosha.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ chrosha.exe
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ chrosha.exe

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

chrosha.exechrosha.exe

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

Executes dropped EXE 1 IoCs

Processes:

chrosha.exe

pid process

2396 chrosha.exe

pid	process
2396	chrosha.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

chrosha.exechrosha.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Wine	chrosha.exe
Key opened	\REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Wine	chrosha.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

chrosha.exechrosha.exe

pid process

3252 chrosha.exe
2396 chrosha.exe
Drops file in Windows directory 1 IoCs

Processes:

chrosha.exe

description ioc process

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

chrosha.exechrosha.exe

pid process

3252 chrosha.exe
3252 chrosha.exe
2396 chrosha.exe
2396 chrosha.exe

pid	process
3252	chrosha.exe
2396	chrosha.exe

description	ioc	process
File created	C:\Windows\Tasks\chrosha.job	chrosha.exe

pid	process
3252	chrosha.exe
3252	chrosha.exe
2396	chrosha.exe
2396	chrosha.exe

C:\Users\Admin\AppData\Local\Temp\chrosha.exe
"C:\Users\Admin\AppData\Local\Temp\chrosha.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:3252

C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe
C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:2396

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe
Filesize
1.8MB

MD5
73d73c48859fc7aa4fd78d9a57f859d6

SHA1
c1f71ea0692d97c653ff5a5ecbc03fd02173fe05

SHA256
d46a8fa545385ab42ca58f6175b13f4b9989d88322ab624f646623b4a52a4876

SHA512
f0634be539582016c03e83f3ca58d613fc16abcc0a9c320321f455234a8f2dc1c199fc52187abac5e4cbbe7b7907afdaa89813f50cbecd611f7e870ee7f8e979

Download Submit
memory/2396-18-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-26-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-20-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-21-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-19-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-31-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-13-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-14-0x0000000000EF1000-0x0000000000F1F000-memory.dmp

Filesize
184KB

Download
memory/2396-15-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-16-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-17-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-30-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-32-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-29-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-28-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-22-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-23-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-24-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-25-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/2396-27-0x0000000000EF0000-0x00000000013A3000-memory.dmp

Filesize
4.7MB

Download
memory/3252-2-0x0000000000AE1000-0x0000000000B0F000-memory.dmp

Filesize
184KB

Download
memory/3252-5-0x0000000000AE0000-0x0000000000F93000-memory.dmp

Filesize
4.7MB

Download
memory/3252-3-0x0000000000AE0000-0x0000000000F93000-memory.dmp

Filesize
4.7MB

Download
memory/3252-0-0x0000000000AE0000-0x0000000000F93000-memory.dmp

Filesize
4.7MB

Download
memory/3252-1-0x0000000077EB6000-0x0000000077EB8000-memory.dmp

Filesize
8KB

Download
memory/3252-10-0x0000000000AE0000-0x0000000000F93000-memory.dmp

Filesize
4.7MB

Download