asyncrat | 7fcb98579512e3df028c8199b530d8e027d55a871d2afb81aeb5994adac814bf

General

Target

8febef9e39284335678e45955722d6a6.exe
Size

617KB
MD5

8febef9e39284335678e45955722d6a6
SHA1

0f5de2557c7cef0c486157089cf2b761ca8839d7
SHA256

7fcb98579512e3df028c8199b530d8e027d55a871d2afb81aeb5994adac814bf
SHA512

e8b70e73b960b4fa3fa209baaf702990dc4a153cca85eca5a9586ab42dab82d99d6ecec15c9ed043cca2637710f2921f94b2a2b934c9960fe36514cdf4ceacbf

Score

10^/10

asyncrat 1 persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

1

C2

185.157.160.136:1973

Mutex

df4Rtg34dFjwr7ujp3

Attributes

anti_vm
false
bsod
false
delay
38
install
false
install_folder
%AppData%
pastebin_config
null

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2608-117-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral2/memory/2608-118-0x000000000040C6BE-mapping.dmp	asyncrat
behavioral2/memory/2608-126-0x0000000006CF0000-0x0000000006D0B000-memory.dmp	asyncrat

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

8febef9e39284335678e45955722d6a6.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run	8febef9e39284335678e45955722d6a6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\rka = "C:\\Users\\Admin\\AppData\\Roaming\\rga\\rpa.exe"	8febef9e39284335678e45955722d6a6.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

8febef9e39284335678e45955722d6a6.exe

description pid process target process

PID 3048 set thread context of 2608 3048 8febef9e39284335678e45955722d6a6.exe RegSvcs.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

RegSvcs.exe

pid process

2608 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 2608 RegSvcs.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

8febef9e39284335678e45955722d6a6.exe

pid process

3048 8febef9e39284335678e45955722d6a6.exe

description	pid	process	target process
PID 3048 set thread context of 2608	3048	8febef9e39284335678e45955722d6a6.exe	RegSvcs.exe

pid	process
2608	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	2608	RegSvcs.exe

pid	process
3048	8febef9e39284335678e45955722d6a6.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

8febef9e39284335678e45955722d6a6.exeRegSvcs.execmd.exe

description	pid	process	target process
PID 3048 wrote to memory of 2608	3048	8febef9e39284335678e45955722d6a6.exe	RegSvcs.exe
PID 3048 wrote to memory of 2608	3048	8febef9e39284335678e45955722d6a6.exe	RegSvcs.exe
PID 3048 wrote to memory of 2608	3048	8febef9e39284335678e45955722d6a6.exe	RegSvcs.exe
PID 3048 wrote to memory of 2608	3048	8febef9e39284335678e45955722d6a6.exe	RegSvcs.exe
PID 3048 wrote to memory of 2608	3048	8febef9e39284335678e45955722d6a6.exe	RegSvcs.exe
PID 3048 wrote to memory of 2608	3048	8febef9e39284335678e45955722d6a6.exe	RegSvcs.exe
PID 3048 wrote to memory of 2608	3048	8febef9e39284335678e45955722d6a6.exe	RegSvcs.exe
PID 3048 wrote to memory of 2608	3048	8febef9e39284335678e45955722d6a6.exe	RegSvcs.exe
PID 2608 wrote to memory of 616	2608	RegSvcs.exe	cmd.exe
PID 2608 wrote to memory of 616	2608	RegSvcs.exe	cmd.exe
PID 2608 wrote to memory of 616	2608	RegSvcs.exe	cmd.exe
PID 616 wrote to memory of 2200	616	cmd.exe	powershell.exe
PID 616 wrote to memory of 2200	616	cmd.exe	powershell.exe
PID 616 wrote to memory of 2200	616	cmd.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\8febef9e39284335678e45955722d6a6.exe
"C:\Users\Admin\AppData\Local\Temp\8febef9e39284335678e45955722d6a6.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3048

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2608

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\uorpgo.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:616

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\uorpgo.exe"'
4⤵
PID:2200

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/616-128-0x0000000000000000-mapping.dmp

Download
memory/2200-129-0x0000000000000000-mapping.dmp

Download
memory/2608-117-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2608-118-0x000000000040C6BE-mapping.dmp

Download
memory/2608-121-0x00000000056D0000-0x00000000056D1000-memory.dmp

Filesize
4KB

Download
memory/2608-123-0x00000000062F0000-0x00000000062F1000-memory.dmp

Filesize
4KB

Download
memory/2608-122-0x0000000005D50000-0x0000000005D51000-memory.dmp

Filesize
4KB

Download
memory/2608-124-0x0000000005DF0000-0x0000000005DF1000-memory.dmp

Filesize
4KB

Download
memory/2608-125-0x0000000006D70000-0x0000000006D71000-memory.dmp

Filesize
4KB

Download
memory/2608-126-0x0000000006CF0000-0x0000000006D0B000-memory.dmp

Filesize
108KB

Download
memory/2608-127-0x0000000006DF0000-0x0000000006DF1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads