mercurialgrabber | 03401dc5183cfa15c4456d97e9bb8b6198582f8c878f0c1c7915087e5f589e12

Virtualization/Sandbox Evasion

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4608	powershell.exe
4176	powershell.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

defense_evasion

Query Registry

Virtualization/Sandbox Evasion

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

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

Executes dropped EXE 1 IoCs

pid	Process
2288	RuntimeBroker.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

Drops desktop.ini file(s) 7 IoCs

description	ioc	Process
File opened for modification	C:\Users\Public\Pictures\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Public\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	wmplayer.exe

Enumerates connected drives 3 TTPs 46 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

Peripheral Device Discovery

System Information Discovery

description	ioc	Process
File opened (read-only)	\??\N:	unregmp2.exe
File opened (read-only)	\??\U:	unregmp2.exe
File opened (read-only)	\??\Q:	wmplayer.exe
File opened (read-only)	\??\T:	wmplayer.exe
File opened (read-only)	\??\K:	wmplayer.exe
File opened (read-only)	\??\E:	unregmp2.exe
File opened (read-only)	\??\H:	unregmp2.exe
File opened (read-only)	\??\P:	unregmp2.exe
File opened (read-only)	\??\W:	unregmp2.exe
File opened (read-only)	\??\Z:	unregmp2.exe
File opened (read-only)	\??\I:	wmplayer.exe
File opened (read-only)	\??\J:	wmplayer.exe
File opened (read-only)	\??\L:	wmplayer.exe
File opened (read-only)	\??\M:	unregmp2.exe
File opened (read-only)	\??\B:	wmplayer.exe
File opened (read-only)	\??\R:	wmplayer.exe
File opened (read-only)	\??\B:	unregmp2.exe
File opened (read-only)	\??\I:	unregmp2.exe
File opened (read-only)	\??\X:	unregmp2.exe
File opened (read-only)	\??\S:	wmplayer.exe
File opened (read-only)	\??\X:	wmplayer.exe
File opened (read-only)	\??\Y:	wmplayer.exe
File opened (read-only)	\??\Z:	wmplayer.exe
File opened (read-only)	\??\L:	unregmp2.exe
File opened (read-only)	\??\Q:	unregmp2.exe
File opened (read-only)	\??\G:	wmplayer.exe
File opened (read-only)	\??\M:	wmplayer.exe
File opened (read-only)	\??\O:	wmplayer.exe
File opened (read-only)	\??\P:	wmplayer.exe
File opened (read-only)	\??\A:	unregmp2.exe
File opened (read-only)	\??\K:	unregmp2.exe
File opened (read-only)	\??\O:	unregmp2.exe
File opened (read-only)	\??\T:	unregmp2.exe
File opened (read-only)	\??\V:	wmplayer.exe
File opened (read-only)	\??\W:	wmplayer.exe
File opened (read-only)	\??\N:	wmplayer.exe
File opened (read-only)	\??\R:	unregmp2.exe
File opened (read-only)	\??\S:	unregmp2.exe
File opened (read-only)	\??\V:	unregmp2.exe
File opened (read-only)	\??\Y:	unregmp2.exe
File opened (read-only)	\??\A:	wmplayer.exe
File opened (read-only)	\??\E:	wmplayer.exe
File opened (read-only)	\??\H:	wmplayer.exe
File opened (read-only)	\??\G:	unregmp2.exe
File opened (read-only)	\??\J:	unregmp2.exe
File opened (read-only)	\??\U:	wmplayer.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
29	discord.com
30	discord.com
31	discord.com

Looks up external IP address via web service 2 IoCs

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

flow	ioc
7	ip4.seeip.org
27	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

System Information Discovery

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

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost\udhisapi.dll	svchost.exe
File opened for modification	C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost\udhisapi.dll	svchost.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	unregmp2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmplayer.exe

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

System Information Discovery

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

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

Enumerates system info in registry 2 TTPs 4 IoCs

Query Registry

System Information Discovery

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

Runs net.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4176	powershell.exe
4176	powershell.exe
4608	powershell.exe
4608	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4176	powershell.exe
Token: SeDebugPrivilege	4608	powershell.exe
Token: SeDebugPrivilege	2288	RuntimeBroker.exe
Token: SeShutdownPrivilege	1780	unregmp2.exe
Token: SeCreatePagefilePrivilege	1780	unregmp2.exe
Token: SeShutdownPrivilege	5020	wmplayer.exe
Token: SeCreatePagefilePrivilege	5020	wmplayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5020	wmplayer.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 232 wrote to memory of 3288	232	d.exe	83
PID 232 wrote to memory of 3288	232	d.exe	83
PID 3288 wrote to memory of 1016	3288	cmd.exe	84
PID 3288 wrote to memory of 1016	3288	cmd.exe	84
PID 1016 wrote to memory of 2512	1016	net.exe	85
PID 1016 wrote to memory of 2512	1016	net.exe	85
PID 232 wrote to memory of 3836	232	d.exe	86
PID 232 wrote to memory of 3836	232	d.exe	86
PID 232 wrote to memory of 3736	232	d.exe	87
PID 232 wrote to memory of 3736	232	d.exe	87
PID 3836 wrote to memory of 4608	3836	cmd.exe	88
PID 3836 wrote to memory of 4608	3836	cmd.exe	88
PID 3736 wrote to memory of 4176	3736	cmd.exe	89
PID 3736 wrote to memory of 4176	3736	cmd.exe	89
PID 232 wrote to memory of 1632	232	d.exe	90
PID 232 wrote to memory of 1632	232	d.exe	90
PID 1632 wrote to memory of 2288	1632	cmd.exe	91
PID 1632 wrote to memory of 2288	1632	cmd.exe	91
PID 5020 wrote to memory of 5056	5020	wmplayer.exe	103
PID 5020 wrote to memory of 5056	5020	wmplayer.exe	103
PID 5020 wrote to memory of 5056	5020	wmplayer.exe	103
PID 5056 wrote to memory of 1780	5056	unregmp2.exe	104
PID 5056 wrote to memory of 1780	5056	unregmp2.exe	104

C:\Users\Admin\AppData\Local\Temp\d.exe
"C:\Users\Admin\AppData\Local\Temp\d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:232
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c "net session"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3288
- - C:\Windows\system32\net.exe
    net session
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1016
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 session
      4⤵
      PID:2512
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c "powershell.exe -Command "Add-MpPreference -ExclusionPath "C:\\"""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3836
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -Command "Add-MpPreference -ExclusionPath "C:\\""
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4608
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c "powershell.exe -Command "Add-MpPreference -ExclusionPath "F:\\"""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3736
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -Command "Add-MpPreference -ExclusionPath "F:\\""
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4176
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c ""C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1632
- - C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
    "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
    3⤵
    - 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:2288

C:\Program Files (x86)\Windows Media Player\wmplayer.exe
"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /Play -Embedding
1⤵
- Drops desktop.ini file(s)
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5020
- C:\Windows\SysWOW64\unregmp2.exe
  "C:\Windows\System32\unregmp2.exe" /AsyncFirstLogon
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5056
- - C:\Windows\system32\unregmp2.exe
    "C:\Windows\SysNative\unregmp2.exe" /AsyncFirstLogon /REENTRANT
    3⤵
    - Enumerates connected drives
    - Suspicious use of AdjustPrivilegeToken
    PID:1780

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s upnphost
1⤵
- Drops file in Windows directory
PID:4816

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

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

Query Registry

System Information Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion