amadey | d46a8fa545385ab42ca58f6175b13f4b9989d88322ab624f646623b4a52a4876

Analysis

max time kernel
151s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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

640 chrosha.exe

pid	process
640	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-1-5-21-3808065738-1666277613-1125846146-1000\Software\Wine	chrosha.exe
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Wine	chrosha.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

chrosha.exechrosha.exe

pid process

4444 chrosha.exe
640 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

4444 chrosha.exe
4444 chrosha.exe
640 chrosha.exe
640 chrosha.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

chrosha.exe

pid process

4444 chrosha.exe

pid	process
4444	chrosha.exe
640	chrosha.exe

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

pid	process
4444	chrosha.exe
4444	chrosha.exe
640	chrosha.exe
640	chrosha.exe

pid	process
4444	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
- Suspicious use of FindShellTrayWindow
PID:4444

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3792 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
1⤵
PID:3628

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:640

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/640-21-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-20-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-15-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-25-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-16-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-23-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-13-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-17-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-26-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-24-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-14-0x00000000009E1000-0x0000000000A0F000-memory.dmp

Filesize
184KB

Download
memory/640-18-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-19-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/640-22-0x00000000009E0000-0x0000000000E93000-memory.dmp

Filesize
4.7MB

Download
memory/4444-0-0x0000000000740000-0x0000000000BF3000-memory.dmp

Filesize
4.7MB

Download
memory/4444-2-0x0000000000741000-0x000000000076F000-memory.dmp

Filesize
184KB

Download
memory/4444-1-0x0000000077DE4000-0x0000000077DE6000-memory.dmp

Filesize
8KB

Download
memory/4444-10-0x0000000000740000-0x0000000000BF3000-memory.dmp

Filesize
4.7MB

Download
memory/4444-4-0x0000000000740000-0x0000000000BF3000-memory.dmp

Filesize
4.7MB

Download
memory/4444-3-0x0000000000740000-0x0000000000BF3000-memory.dmp

Filesize
4.7MB

Download