asyncrat | d8d091387308daced66ca46fcba3853a2258265ff221b5862ca435e56459adf9

Analysis

max time kernel
140s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
02/09/2023, 01:00

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General

Target

c63ce128ee4c0442e303b86d27e3e7df8eff15a04a44ada8cabfa965144ccf56.exe
Size

66KB
MD5

018ed5e21ac44a7bed37d0f30ab22bbd
SHA1

8bde13d8322c59cf548bb6ee5ef280e5c9dd0a42
SHA256

c63ce128ee4c0442e303b86d27e3e7df8eff15a04a44ada8cabfa965144ccf56
SHA512

2a0445a9b152831e8d59506a4967733241018e7047473d19d524151e710ca73e4e848e1391f8b1546467c85d903951559965ffd006ef15598eebcc159e17110a
SSDEEP

1536:h2wukvF1ak9gcKu5UYFgwLZAUbXp3EZVzm4WrPlTGRx:h2dkvF1ak9Ku5UYFgwLZbXQiBdix

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

Default

marli27.duckdns.org:2727

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/1428-0-0x00000000007B0000-0x00000000007C6000-memory.dmp	asyncrat

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{70BC7231-0DBF-47DC-863D-953DAC19E4A8}.catalogItem	svchost.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1428	c63ce128ee4c0442e303b86d27e3e7df8eff15a04a44ada8cabfa965144ccf56.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1428	c63ce128ee4c0442e303b86d27e3e7df8eff15a04a44ada8cabfa965144ccf56.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1428	c63ce128ee4c0442e303b86d27e3e7df8eff15a04a44ada8cabfa965144ccf56.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\c63ce128ee4c0442e303b86d27e3e7df8eff15a04a44ada8cabfa965144ccf56.exe
"C:\Users\Admin\AppData\Local\Temp\c63ce128ee4c0442e303b86d27e3e7df8eff15a04a44ada8cabfa965144ccf56.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1428

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1428-1-0x00000000744F0000-0x0000000074CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1428-0-0x00000000007B0000-0x00000000007C6000-memory.dmp

Filesize
88KB

Download
memory/1428-9-0x00000000050A0000-0x00000000050B0000-memory.dmp

Filesize
64KB

Download
memory/1428-10-0x0000000005A30000-0x0000000005FD4000-memory.dmp

Filesize
5.6MB

Download
memory/1428-11-0x0000000005670000-0x0000000005702000-memory.dmp

Filesize
584KB

Download
memory/1428-12-0x0000000005660000-0x000000000566A000-memory.dmp

Filesize
40KB

Download
memory/1428-13-0x00000000744F0000-0x0000000074CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1428-14-0x00000000050A0000-0x00000000050B0000-memory.dmp

Filesize
64KB

Download