remcos | dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe = "0"	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1568-58-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4060-57-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral2/memory/3320-56-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4060-57-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1568-58-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4576	powershell.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe

Checks BIOS information in registry 2 TTPs 2 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\SystemBiosVersion	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe = "0"	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	csc.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4580 set thread context of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4136 set thread context of 4060	4136	csc.exe	108
PID 4136 set thread context of 1568	4136	csc.exe	109
PID 4136 set thread context of 3320	4136	csc.exe	110

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4576	powershell.exe
4576	powershell.exe
4060	csc.exe
4060	csc.exe
3320	csc.exe
3320	csc.exe
4060	csc.exe
4060	csc.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4136	csc.exe
4136	csc.exe
4136	csc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4576	powershell.exe
Token: SeDebugPrivilege	3320	csc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4136	csc.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 4576	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	92
PID 4580 wrote to memory of 4576	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	92
PID 4580 wrote to memory of 3324	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	94
PID 4580 wrote to memory of 3324	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	94
PID 4580 wrote to memory of 3324	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	94
PID 4580 wrote to memory of 3324	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	94
PID 4580 wrote to memory of 3324	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	94
PID 4580 wrote to memory of 3324	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	94
PID 4580 wrote to memory of 3324	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	94
PID 4580 wrote to memory of 3324	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	94
PID 4580 wrote to memory of 3324	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	94
PID 4580 wrote to memory of 3324	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	94
PID 4580 wrote to memory of 1352	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	95
PID 4580 wrote to memory of 1352	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	95
PID 4580 wrote to memory of 1352	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	95
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 4136	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	96
PID 4580 wrote to memory of 3636	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	97
PID 4580 wrote to memory of 3636	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	97
PID 4580 wrote to memory of 3636	4580	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe	97
PID 4136 wrote to memory of 4060	4136	csc.exe	108
PID 4136 wrote to memory of 4060	4136	csc.exe	108
PID 4136 wrote to memory of 4060	4136	csc.exe	108
PID 4136 wrote to memory of 4060	4136	csc.exe	108
PID 4136 wrote to memory of 1568	4136	csc.exe	109
PID 4136 wrote to memory of 1568	4136	csc.exe	109
PID 4136 wrote to memory of 1568	4136	csc.exe	109
PID 4136 wrote to memory of 1568	4136	csc.exe	109
PID 4136 wrote to memory of 3320	4136	csc.exe	110
PID 4136 wrote to memory of 3320	4136	csc.exe	110
PID 4136 wrote to memory of 3320	4136	csc.exe	110
PID 4136 wrote to memory of 3320	4136	csc.exe	110

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe

C:\Users\Admin\AppData\Local\Temp\dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe
"C:\Users\Admin\AppData\Local\Temp\dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe"
1⤵
- UAC bypass
- Windows security bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4580
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\dfa64dc7ba3712eec6272c7284549f3f5f7f280eb45f33f2d943e189e7cdd056.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4576
- C:\Windows\System32\svchost.exe
  "C:\Windows\System32\svchost.exe"
  2⤵
  PID:3324
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:1352
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4136
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /stext "C:\Users\Admin\AppData\Local\Temp\nakjto"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4060
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /stext "C:\Users\Admin\AppData\Local\Temp\puptuhomw"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1568
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /stext "C:\Users\Admin\AppData\Local\Temp\awvmnzznknox"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3320
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  PID:3636

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3220 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
1⤵
PID:1900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scripting

T1064

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Scripting

T1064

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion