remcos | d6308a3c9a551ae46ddc06a57fda64bcfa9b34ca6616fe84d85191ce7ef87196

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	Requirement reference for quotation.exe

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral3/memory/2732-49-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral3/memory/2524-48-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral3/memory/2720-51-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral3/memory/2732-49-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral3/memory/2524-48-0x0000000000400000-0x0000000000478000-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
2756	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	Requirement reference for quotation.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	Requirement reference for quotation.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Requirement reference for quotation.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	wmplayer.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Requirement reference for quotation.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Requirement reference for quotation.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	Requirement reference for quotation.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Requirement reference for quotation.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1824 set thread context of 2216	1824	Requirement reference for quotation.exe	32
PID 2216 set thread context of 2524	2216	wmplayer.exe	34
PID 2216 set thread context of 2732	2216	wmplayer.exe	35
PID 2216 set thread context of 2720	2216	wmplayer.exe	36

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2756	powershell.exe
2524	wmplayer.exe
2524	wmplayer.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2216	wmplayer.exe
2216	wmplayer.exe
2216	wmplayer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1824	Requirement reference for quotation.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2720	wmplayer.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 1824 wrote to memory of 2756	1824	Requirement reference for quotation.exe	30
PID 1824 wrote to memory of 2756	1824	Requirement reference for quotation.exe	30
PID 1824 wrote to memory of 2756	1824	Requirement reference for quotation.exe	30
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2216	1824	Requirement reference for quotation.exe	32
PID 1824 wrote to memory of 2460	1824	Requirement reference for quotation.exe	33
PID 1824 wrote to memory of 2460	1824	Requirement reference for quotation.exe	33
PID 1824 wrote to memory of 2460	1824	Requirement reference for quotation.exe	33
PID 2216 wrote to memory of 2524	2216	wmplayer.exe	34
PID 2216 wrote to memory of 2524	2216	wmplayer.exe	34
PID 2216 wrote to memory of 2524	2216	wmplayer.exe	34
PID 2216 wrote to memory of 2524	2216	wmplayer.exe	34
PID 2216 wrote to memory of 2524	2216	wmplayer.exe	34
PID 2216 wrote to memory of 2732	2216	wmplayer.exe	35
PID 2216 wrote to memory of 2732	2216	wmplayer.exe	35
PID 2216 wrote to memory of 2732	2216	wmplayer.exe	35
PID 2216 wrote to memory of 2732	2216	wmplayer.exe	35
PID 2216 wrote to memory of 2732	2216	wmplayer.exe	35
PID 2216 wrote to memory of 2720	2216	wmplayer.exe	36
PID 2216 wrote to memory of 2720	2216	wmplayer.exe	36
PID 2216 wrote to memory of 2720	2216	wmplayer.exe	36
PID 2216 wrote to memory of 2720	2216	wmplayer.exe	36
PID 2216 wrote to memory of 2720	2216	wmplayer.exe	36

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

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

C:\Users\Admin\AppData\Local\Temp\Requirement reference for quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Requirement reference for quotation.exe"
1⤵
- UAC bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1824
- 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\Requirement reference for quotation.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2756
- C:\Program Files (x86)\Windows Media Player\wmplayer.exe
  "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2216
- - C:\Program Files (x86)\Windows Media Player\wmplayer.exe
    "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\qynlqtkqfwaegi"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2524
- - C:\Program Files (x86)\Windows Media Player\wmplayer.exe
    "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\saswqlvktesjrpmql"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:2732
- - C:\Program Files (x86)\Windows Media Player\wmplayer.exe
    "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\cuyoreflhmkvtdiuctmw"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2720
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1824 -s 592
  2⤵
  PID:2460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

T1562.001

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion