asyncrat | 1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033

Analysis

max time kernel
54s
max time network
148s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
29-09-2022 04:27

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General

Target

1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe
Size

1.7MB
MD5

47d2d449ec519d7d24feafff8088735f
SHA1

75fd74fffc8a9da0ef33dce2a616fd2424e41b86
SHA256

1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033
SHA512

9fd8f13e6fc0ddf3cd69eb23f5fd9982b1f9f2f361b4b37de445bceea18860bdf8ca9ef546302d927b8ad749f48789ff51fe4797a69106a82921e275b5ada08b
SSDEEP

24576:Bn1MHQ7hZjEnBmMYYsB3J0zNMESsm/r8REOuPOEkU1johR:1NZjEnBmMAJGNusYr8REOuP3kUZohR

Score

10^/10

asyncrat persistence rat

Malware Config

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\SystemGPU\\PCI-GPU.exe\","	1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe

Async RAT payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/4904-193-0x000000000040C7CE-mapping.dmp	asyncrat
behavioral1/memory/4904-242-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/4904-294-0x0000000005B70000-0x0000000005B7C000-memory.dmp	asyncrat

Suspicious use of SetThreadContext 1 IoCs

Processes:

1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe

description	pid	process	target process
PID 1148 set thread context of 4904	1148	1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe	RegAsm.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RegAsm.exe

pid process

4904 RegAsm.exe
4904 RegAsm.exe
4904 RegAsm.exe

pid	process
4904	RegAsm.exe
4904	RegAsm.exe
4904	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exeRegAsm.exe

description	pid	process
Token: SeDebugPrivilege	1148	1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe
Token: SeDebugPrivilege	4904	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exeRegAsm.execmd.execmd.execmd.exe

description	pid	process	target process
PID 1148 wrote to memory of 4904	1148	1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe	RegAsm.exe
PID 1148 wrote to memory of 4904	1148	1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe	RegAsm.exe
PID 1148 wrote to memory of 4904	1148	1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe	RegAsm.exe
PID 1148 wrote to memory of 4904	1148	1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe	RegAsm.exe
PID 1148 wrote to memory of 4904	1148	1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe	RegAsm.exe
PID 1148 wrote to memory of 4904	1148	1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe	RegAsm.exe
PID 1148 wrote to memory of 4904	1148	1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe	RegAsm.exe
PID 1148 wrote to memory of 4904	1148	1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe	RegAsm.exe
PID 4904 wrote to memory of 2844	4904	RegAsm.exe	cmd.exe
PID 4904 wrote to memory of 2844	4904	RegAsm.exe	cmd.exe
PID 4904 wrote to memory of 2844	4904	RegAsm.exe	cmd.exe
PID 2844 wrote to memory of 4048	2844	cmd.exe	powershell.exe
PID 2844 wrote to memory of 4048	2844	cmd.exe	powershell.exe
PID 2844 wrote to memory of 4048	2844	cmd.exe	powershell.exe
PID 4904 wrote to memory of 3264	4904	RegAsm.exe	cmd.exe
PID 4904 wrote to memory of 3264	4904	RegAsm.exe	cmd.exe
PID 4904 wrote to memory of 3264	4904	RegAsm.exe	cmd.exe
PID 3264 wrote to memory of 5080	3264	cmd.exe	powershell.exe
PID 3264 wrote to memory of 5080	3264	cmd.exe	powershell.exe
PID 3264 wrote to memory of 5080	3264	cmd.exe	powershell.exe
PID 4904 wrote to memory of 3420	4904	RegAsm.exe	cmd.exe
PID 4904 wrote to memory of 3420	4904	RegAsm.exe	cmd.exe
PID 4904 wrote to memory of 3420	4904	RegAsm.exe	cmd.exe
PID 3420 wrote to memory of 4728	3420	cmd.exe	powershell.exe
PID 3420 wrote to memory of 4728	3420	cmd.exe	powershell.exe
PID 3420 wrote to memory of 4728	3420	cmd.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe
"C:\Users\Admin\AppData\Local\Temp\1063141a71a9f3b788d4be37ff25d52cb29f7ec8105fbd8b90129073e78cd033.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1148

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4904

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\ufgzuj.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:2844

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\ufgzuj.exe"'
4⤵
PID:4048

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\wfxvxt.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:3264

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\wfxvxt.exe"'
4⤵
PID:5080

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\ugonkh.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:3420

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\ugonkh.exe"'
4⤵
PID:4728

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1148-162-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-149-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-122-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-123-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-124-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-125-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-126-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-127-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-128-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-129-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-130-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-131-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-132-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-133-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-134-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-135-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-136-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-137-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-138-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-139-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-140-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-141-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-142-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-160-0x0000000004D20000-0x0000000004DC6000-memory.dmp

Filesize
664KB

Download
memory/1148-144-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-145-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-146-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-147-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-148-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-161-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-150-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-151-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-152-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-153-0x0000000000400000-0x00000000005B0000-memory.dmp

Filesize
1.7MB

Download
memory/1148-154-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-155-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-156-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-157-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-158-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-159-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-143-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-121-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-186-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-163-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-164-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-165-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-166-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-167-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-168-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-169-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-170-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-171-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-172-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-173-0x0000000004F50000-0x0000000004FE2000-memory.dmp

Filesize
584KB

Download
memory/1148-174-0x0000000004F00000-0x0000000004F22000-memory.dmp

Filesize
136KB

Download
memory/1148-175-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-176-0x0000000004FE0000-0x0000000005330000-memory.dmp

Filesize
3.3MB

Download
memory/1148-177-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-178-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-179-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-180-0x000000003CC70000-0x000000003CCD6000-memory.dmp

Filesize
408KB

Download
memory/1148-181-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-182-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-183-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-184-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-185-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-120-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-187-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-188-0x000000003D110000-0x000000003D1A2000-memory.dmp

Filesize
584KB

Download
memory/1148-189-0x000000003D6B0000-0x000000003DBAE000-memory.dmp

Filesize
5.0MB

Download
memory/1148-190-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/1148-191-0x0000000076FB0000-0x000000007713E000-memory.dmp

Filesize
1.6MB

Download
memory/2844-305-0x0000000000000000-mapping.dmp

Download
memory/3264-318-0x0000000000000000-mapping.dmp

Download
memory/3420-331-0x0000000000000000-mapping.dmp

Download
memory/4048-311-0x0000000000000000-mapping.dmp

Download
memory/4728-337-0x0000000000000000-mapping.dmp

Download
memory/4904-193-0x000000000040C7CE-mapping.dmp

Download
memory/4904-242-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4904-282-0x0000000005850000-0x00000000058EC000-memory.dmp

Filesize
624KB

Download
memory/4904-291-0x00000000069D0000-0x0000000006A46000-memory.dmp

Filesize
472KB

Download
memory/4904-294-0x0000000005B70000-0x0000000005B7C000-memory.dmp

Filesize
48KB

Download
memory/4904-295-0x00000000069B0000-0x00000000069CE000-memory.dmp

Filesize
120KB

Download
memory/5080-324-0x0000000000000000-mapping.dmp

Download