metasploit | cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbd

General

Target

cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
Size

211KB
MD5

ed1920b6375f96380321b056a1347080
SHA1

e79eea6bea3f995624fe66285d8209669962c5f4
SHA256

cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbd
SHA512

c9d1a0856c1ad473a547074758fa8ebb5965242418444dc57acff54bb41c6d8cf2e7a7b3fa45e63b09ffaf84c1e11fb02d8413e25a65b586a2cf5889f58707d3
SSDEEP

3072:bfWnWZHLBHF+WUfJi+v5aZ5yWkx/tzjZXZud6BfLfNwkkQHBeJI8H2:Swtl3UGkhtzZpfjNwkkQgW

Score

10^/10

metasploit backdoor discovery evasion persistence trojan upx

Malware Config

Extracted

Family

metasploit

Version

encoder/call4_dword_xor

Signatures

MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
trojan backdoor metasploit

Modifies firewall policy service 3 TTPs 8 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	igfxbt86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	igfxbt86.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxbt86.exe = "C:\\Windows\\SysWOW64\\igfxbt86.exe:*:Enabled:Intel Backup Monitor"	igfxbt86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	igfxbt86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	igfxbt86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	igfxbt86.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxbt86.exe = "C:\\Windows\\SysWOW64\\igfxbt86.exe:*:Enabled:Intel Backup Monitor"	igfxbt86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	igfxbt86.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe

Deletes itself 1 IoCs

pid	Process
4776	igfxbt86.exe

Executes dropped EXE 2 IoCs

pid	Process
1868	igfxbt86.exe
4776	igfxbt86.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Intel Backup Monitor = "C:\\Windows\\SysWOW64\\igfxbt86.exe"	igfxbt86.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	igfxbt86.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	igfxbt86.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
File opened for modification	C:\Windows\SysWOW64\igfxbt86.exe	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
File created	C:\Windows\SysWOW64\igfxbt86.exe	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
File opened for modification	C:\Windows\SysWOW64\	igfxbt86.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4416 set thread context of 2488	4416	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe	89
PID 1868 set thread context of 4776	1868	igfxbt86.exe	96

UPX packed file 11 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2488-0-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/2488-2-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/2488-3-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/2488-4-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/4776-44-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/2488-42-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/2488-45-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/2488-46-0x0000000000400000-0x0000000000441000-memory.dmp	upx
behavioral2/memory/4776-47-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/4776-48-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/4776-49-0x0000000000400000-0x000000000044C000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	igfxbt86.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	igfxbt86.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2488	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
2488	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
2488	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
2488	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
4776	igfxbt86.exe
4776	igfxbt86.exe
4776	igfxbt86.exe
4776	igfxbt86.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
4416	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4416 wrote to memory of 2488	4416	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe	89
PID 4416 wrote to memory of 2488	4416	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe	89
PID 4416 wrote to memory of 2488	4416	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe	89
PID 4416 wrote to memory of 2488	4416	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe	89
PID 4416 wrote to memory of 2488	4416	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe	89
PID 4416 wrote to memory of 2488	4416	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe	89
PID 4416 wrote to memory of 2488	4416	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe	89
PID 2488 wrote to memory of 1868	2488	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe	95
PID 2488 wrote to memory of 1868	2488	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe	95
PID 2488 wrote to memory of 1868	2488	cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe	95
PID 1868 wrote to memory of 4776	1868	igfxbt86.exe	96
PID 1868 wrote to memory of 4776	1868	igfxbt86.exe	96
PID 1868 wrote to memory of 4776	1868	igfxbt86.exe	96
PID 1868 wrote to memory of 4776	1868	igfxbt86.exe	96
PID 1868 wrote to memory of 4776	1868	igfxbt86.exe	96
PID 1868 wrote to memory of 4776	1868	igfxbt86.exe	96
PID 1868 wrote to memory of 4776	1868	igfxbt86.exe	96
PID 4776 wrote to memory of 3432	4776	igfxbt86.exe	55
PID 4776 wrote to memory of 3432	4776	igfxbt86.exe	55

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3432
- C:\Users\Admin\AppData\Local\Temp\cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
  "C:\Users\Admin\AppData\Local\Temp\cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:4416
- - C:\Users\Admin\AppData\Local\Temp\cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe
    "C:\Users\Admin\AppData\Local\Temp\cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbdN.exe"
    3⤵
    - Checks computer location settings
    - Maps connected drives based on registry
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2488
  - - C:\Windows\SysWOW64\igfxbt86.exe
      "C:\Windows\SysWOW64\igfxbt86.exe" C:\Users\Admin\AppData\Local\Temp\CB92AA~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1868
    - - C:\Windows\SysWOW64\igfxbt86.exe
        
        "C:\Windows\SysWOW64\igfxbt86.exe" C:\Users\Admin\AppData\Local\Temp\CB92AA~1.EXE
        5⤵
        Modifies firewall policy service
        Deletes itself
        Executes dropped EXE
        Adds Run key to start application
        Maps connected drives based on registry
        Drops file in System32 directory
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:4776

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 --field-trial-handle=4508,i,16315016104747277319,5510969007830467313,262144 --variations-seed-version --mojo-platform-channel-handle=1904 /prefetch:8
1⤵
PID:5020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\igfxbt86.exe

Filesize
211KB

MD5
ed1920b6375f96380321b056a1347080

SHA1
e79eea6bea3f995624fe66285d8209669962c5f4

SHA256
cb92aa2248bfc51370cc024a8568f85894580cb72e5048f41ffc156722e97dbd

SHA512
c9d1a0856c1ad473a547074758fa8ebb5965242418444dc57acff54bb41c6d8cf2e7a7b3fa45e63b09ffaf84c1e11fb02d8413e25a65b586a2cf5889f58707d3

Download Submit
memory/2488-0-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2488-2-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2488-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2488-4-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2488-42-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2488-45-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2488-46-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/4776-44-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4776-47-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4776-48-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4776-49-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads