asyncrat | 2894d07aa782dcb0bc5c542447e2aba9d86c0c98fff54a91d19f1444abf95b6f

General

Target

Kleinschmidt GmbH Invoices - Payment Receipt.exe
Size

796KB
MD5

3d2af31c95b477dc90f42b825ad7c126
SHA1

9064ca55686edead9351d49c911c184caa236ae7
SHA256

1fec1e11e26b8d1de831b50ff0163dfca3a751e3bb28ea372b54a7c9cc19cff6
SHA512

8da1a7c125eee396cbc7e5a386503ce60c6ef2f187e0d158ab7491e60b90913df452fce94190821c1b41c819963879869756f6cbfe35c44e60efe71dafe1805d
SSDEEP

6144:Gk4I1/j6U/sWc918LevX14oT61JDC2ya7/yo5tNLCFC7z/7tkW/x2RDXY3/+75f0:0UuscX8LqFY1JD/moblCAz5V/qYPe

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:6305

209.127.186.218:6305

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_file
MicroSoft-win.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1688-70-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1688-71-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1688-72-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1688-73-0x000000000040C75E-mapping.dmp	asyncrat
behavioral1/memory/1688-75-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1688-77-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Suspicious use of SetThreadContext 1 IoCs

Processes:

Kleinschmidt GmbH Invoices - Payment Receipt.exe

description	pid	process	target process
PID 1800 set thread context of 1688	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	Kleinschmidt GmbH Invoices - Payment Receipt.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

856 schtasks.exe

pid	process
856	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

Kleinschmidt GmbH Invoices - Payment Receipt.exepowershell.exepowershell.exe

pid	process
1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe
1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe
1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe
1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe
1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe
1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe
1724	powershell.exe
1648	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Kleinschmidt GmbH Invoices - Payment Receipt.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe
Token: SeDebugPrivilege	1724	powershell.exe
Token: SeDebugPrivilege	1648	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Kleinschmidt GmbH Invoices - Payment Receipt.exe

description	pid	process	target process
PID 1800 wrote to memory of 1648	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	powershell.exe
PID 1800 wrote to memory of 1648	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	powershell.exe
PID 1800 wrote to memory of 1648	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	powershell.exe
PID 1800 wrote to memory of 1648	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	powershell.exe
PID 1800 wrote to memory of 1724	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	powershell.exe
PID 1800 wrote to memory of 1724	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	powershell.exe
PID 1800 wrote to memory of 1724	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	powershell.exe
PID 1800 wrote to memory of 1724	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	powershell.exe
PID 1800 wrote to memory of 856	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	schtasks.exe
PID 1800 wrote to memory of 856	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	schtasks.exe
PID 1800 wrote to memory of 856	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	schtasks.exe
PID 1800 wrote to memory of 856	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	schtasks.exe
PID 1800 wrote to memory of 1688	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	Kleinschmidt GmbH Invoices - Payment Receipt.exe
PID 1800 wrote to memory of 1688	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	Kleinschmidt GmbH Invoices - Payment Receipt.exe
PID 1800 wrote to memory of 1688	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	Kleinschmidt GmbH Invoices - Payment Receipt.exe
PID 1800 wrote to memory of 1688	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	Kleinschmidt GmbH Invoices - Payment Receipt.exe
PID 1800 wrote to memory of 1688	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	Kleinschmidt GmbH Invoices - Payment Receipt.exe
PID 1800 wrote to memory of 1688	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	Kleinschmidt GmbH Invoices - Payment Receipt.exe
PID 1800 wrote to memory of 1688	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	Kleinschmidt GmbH Invoices - Payment Receipt.exe
PID 1800 wrote to memory of 1688	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	Kleinschmidt GmbH Invoices - Payment Receipt.exe
PID 1800 wrote to memory of 1688	1800	Kleinschmidt GmbH Invoices - Payment Receipt.exe	Kleinschmidt GmbH Invoices - Payment Receipt.exe

C:\Users\Admin\AppData\Local\Temp\Kleinschmidt GmbH Invoices - Payment Receipt.exe
"C:\Users\Admin\AppData\Local\Temp\Kleinschmidt GmbH Invoices - Payment Receipt.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1800

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Kleinschmidt GmbH Invoices - Payment Receipt.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1648

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\bVUhnvekcvHWd.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1724

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bVUhnvekcvHWd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC9B6.tmp"
2⤵
- Creates scheduled task(s)
PID:856

C:\Users\Admin\AppData\Local\Temp\Kleinschmidt GmbH Invoices - Payment Receipt.exe
"C:\Users\Admin\AppData\Local\Temp\Kleinschmidt GmbH Invoices - Payment Receipt.exe"
2⤵
PID:1688

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC9B6.tmp
Filesize
1KB

MD5
0f5aee944455396dd6db027080331dcc

SHA1
5e3441bf32906436867b3a8b91179f35e548de1d

SHA256
79cd0fa11248fe89d092ef8f0b3026afc9f68bbc103441c59747a43f22bebcd3

SHA512
d707460a03adcaa7b8030893f45296b9e78ecb4cf391135fc5fcebcc13ae8adf7f29c377fc4aa0c6f88092c3afb41f97bca43041804152fa183ee98cc3c4c473

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize
7KB

MD5
8bb82636cbb97a4b94ee42404426e640

SHA1
29326d91bfbecdaa6b3036686ac6b9601507c760

SHA256
4a0cfc3fc10965c2579440ac0653fa39339081b9af179fe9eea799710544b018

SHA512
97eb89bac39a840387236a59c88e18b3807a9756a5db991aec482cd7dede890cdbe87c526b47a21ad569af3d7ea970c2caa01ebdb9cb1f76297b54a537c04b24

Download Submit
memory/856-62-0x0000000000000000-mapping.dmp

Download
memory/1648-80-0x000000006E1C0000-0x000000006E76B000-memory.dmp

Filesize
5.7MB

Download
memory/1648-79-0x000000006E1C0000-0x000000006E76B000-memory.dmp

Filesize
5.7MB

Download
memory/1648-59-0x0000000000000000-mapping.dmp

Download
memory/1688-72-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1688-71-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1688-77-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1688-75-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1688-73-0x000000000040C75E-mapping.dmp

Download
memory/1688-67-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1688-68-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1688-70-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1724-78-0x000000006E1C0000-0x000000006E76B000-memory.dmp

Filesize
5.7MB

Download
memory/1724-61-0x0000000000000000-mapping.dmp

Download
memory/1724-81-0x000000006E1C0000-0x000000006E76B000-memory.dmp

Filesize
5.7MB

Download
memory/1800-54-0x00000000008E0000-0x00000000009AC000-memory.dmp

Filesize
816KB

Download
memory/1800-66-0x0000000004BC0000-0x0000000004BD2000-memory.dmp

Filesize
72KB

Download
memory/1800-57-0x0000000001DB0000-0x0000000001DBC000-memory.dmp

Filesize
48KB

Download
memory/1800-58-0x00000000053C0000-0x000000000542C000-memory.dmp

Filesize
432KB

Download
memory/1800-56-0x00000000008D0000-0x00000000008E6000-memory.dmp

Filesize
88KB

Download
memory/1800-55-0x00000000758C1000-0x00000000758C3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads