metasploit | 21ba7b8f019fb3966b00a61aa3d8ee3f9aedbc7b7923d80a40e4adb4e922ca42

General

Target
04232afde988dbf882ed66355fd24b30.exe
Size 258KB
Sample231224-s4mrkshac5
SHA256 21ba7b8f019fb3966b00a61aa3d8ee3f9aedbc7b7923d80a40e4adb4e922ca42
MD5 04232afde988dbf882ed66355fd24b30
SHA1 a17104dc77f2b6ffa3d431d2d4810e592a735287
SHA512 b385ed1ec7d8e6e156a75de93d5d8410f7a1b4c7259bff69b83786d850e09b78d29c9cab6ae0e70c673985e2849584f00d5e4dc887f59c093952be67a520dd41
SSDEEP 3072:+cavt6S/4etFqwTR2C+KaD0bbNlknbPFjufeNsVhAj6N2SQkOpCGcuHiC55hU1rC:+vVREyJubtumNAI6N26a
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

metasploit backdoor 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 2 TTPs 8 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	igfxbh32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxbh32.exe = "C:\\Windows\\SysWOW64\\igfxbh32.exe:*:Enabled:Intel iDisplay Hub"	igfxbh32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	igfxbh32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	igfxbh32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	igfxbh32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxbh32.exe = "C:\\Windows\\SysWOW64\\igfxbh32.exe:*:Enabled:Intel iDisplay Hub"	igfxbh32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	igfxbh32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	igfxbh32.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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	04232afde988dbf882ed66355fd24b30.exe

Deletes itself 1 IoCs

pid	Process
3388	igfxbh32.exe

Executes dropped EXE 2 IoCs

pid	Process
1228	igfxbh32.exe
3388	igfxbh32.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4400-0-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4400-2-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4400-3-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4400-6-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4400-44-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/3388-52-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/3388-53-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/3388-54-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/3388-55-0x0000000000400000-0x0000000000467000-memory.dmp	upx

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 iDisplay Hub = "C:\\Windows\\SysWOW64\\igfxbh32.exe"	igfxbh32.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	04232afde988dbf882ed66355fd24b30.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	04232afde988dbf882ed66355fd24b30.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	igfxbh32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	igfxbh32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	igfxbh32.exe
File opened for modification	C:\Windows\SysWOW64\	04232afde988dbf882ed66355fd24b30.exe
File opened for modification	C:\Windows\SysWOW64\igfxbh32.exe	04232afde988dbf882ed66355fd24b30.exe
File created	C:\Windows\SysWOW64\igfxbh32.exe	04232afde988dbf882ed66355fd24b30.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4920 set thread context of 4400	4920	04232afde988dbf882ed66355fd24b30.exe	92
PID 1228 set thread context of 3388	1228	igfxbh32.exe	102

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	04232afde988dbf882ed66355fd24b30.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4400	04232afde988dbf882ed66355fd24b30.exe
4400	04232afde988dbf882ed66355fd24b30.exe
4400	04232afde988dbf882ed66355fd24b30.exe
4400	04232afde988dbf882ed66355fd24b30.exe
3388	igfxbh32.exe
3388	igfxbh32.exe
3388	igfxbh32.exe
3388	igfxbh32.exe
3388	igfxbh32.exe
3388	igfxbh32.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4920 wrote to memory of 4400	4920	04232afde988dbf882ed66355fd24b30.exe	92
PID 4920 wrote to memory of 4400	4920	04232afde988dbf882ed66355fd24b30.exe	92
PID 4920 wrote to memory of 4400	4920	04232afde988dbf882ed66355fd24b30.exe	92
PID 4920 wrote to memory of 4400	4920	04232afde988dbf882ed66355fd24b30.exe	92
PID 4920 wrote to memory of 4400	4920	04232afde988dbf882ed66355fd24b30.exe	92
PID 4920 wrote to memory of 4400	4920	04232afde988dbf882ed66355fd24b30.exe	92
PID 4920 wrote to memory of 4400	4920	04232afde988dbf882ed66355fd24b30.exe	92
PID 4920 wrote to memory of 4400	4920	04232afde988dbf882ed66355fd24b30.exe	92
PID 4400 wrote to memory of 1228	4400	04232afde988dbf882ed66355fd24b30.exe	100
PID 4400 wrote to memory of 1228	4400	04232afde988dbf882ed66355fd24b30.exe	100
PID 4400 wrote to memory of 1228	4400	04232afde988dbf882ed66355fd24b30.exe	100
PID 1228 wrote to memory of 3388	1228	igfxbh32.exe	102
PID 1228 wrote to memory of 3388	1228	igfxbh32.exe	102
PID 1228 wrote to memory of 3388	1228	igfxbh32.exe	102
PID 1228 wrote to memory of 3388	1228	igfxbh32.exe	102
PID 1228 wrote to memory of 3388	1228	igfxbh32.exe	102
PID 1228 wrote to memory of 3388	1228	igfxbh32.exe	102
PID 1228 wrote to memory of 3388	1228	igfxbh32.exe	102
PID 1228 wrote to memory of 3388	1228	igfxbh32.exe	102
PID 3388 wrote to memory of 3472	3388	igfxbh32.exe	67
PID 3388 wrote to memory of 3472	3388	igfxbh32.exe	67

C:\Users\Admin\AppData\Local\Temp\04232afde988dbf882ed66355fd24b30.exe
"C:\Users\Admin\AppData\Local\Temp\04232afde988dbf882ed66355fd24b30.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4920
- C:\Users\Admin\AppData\Local\Temp\04232afde988dbf882ed66355fd24b30.exe
  "C:\Users\Admin\AppData\Local\Temp\04232afde988dbf882ed66355fd24b30.exe"
  2⤵
  - Checks computer location settings
  - Maps connected drives based on registry
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4400
- - C:\Windows\SysWOW64\igfxbh32.exe
    "C:\Windows\SysWOW64\igfxbh32.exe" C:\Users\Admin\AppData\Local\Temp\04232A~1.EXE
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1228
  - - C:\Windows\SysWOW64\igfxbh32.exe
      "C:\Windows\SysWOW64\igfxbh32.exe" C:\Users\Admin\AppData\Local\Temp\04232A~1.EXE
      4⤵
      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
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:3388

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3472

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

Modify Registry

2

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

igfxbh32.exe

Path C:\Windows\SysWOW64\igfxbh32.exe
Size 258KB
SHA256 21ba7b8f019fb3966b00a61aa3d8ee3f9aedbc7b7923d80a40e4adb4e922ca42
MD5 04232afde988dbf882ed66355fd24b30
SHA1 a17104dc77f2b6ffa3d431d2d4810e592a735287
SHA512 b385ed1ec7d8e6e156a75de93d5d8410f7a1b4c7259bff69b83786d850e09b78d29c9cab6ae0e70c673985e2849584f00d5e4dc887f59c093952be67a520dd41
SSDEEP 3072:+cavt6S/4etFqwTR2C+KaD0bbNlknbPFjufeNsVhAj6N2SQkOpCGcuHiC55hU1rC:+vVREyJubtumNAI6N26a
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3388-52-0x0000000000400000-0x0000000000467000-memory.dmp

Download

memory/3388-53-0x0000000000400000-0x0000000000467000-memory.dmp

Download

memory/3388-54-0x0000000000400000-0x0000000000467000-memory.dmp

Download

memory/3388-55-0x0000000000400000-0x0000000000467000-memory.dmp

Download

memory/4400-0-0x0000000000400000-0x0000000000467000-memory.dmp

Download

memory/4400-2-0x0000000000400000-0x0000000000467000-memory.dmp

Download

memory/4400-3-0x0000000000400000-0x0000000000467000-memory.dmp

Download

memory/4400-6-0x0000000000400000-0x0000000000467000-memory.dmp

Download

memory/4400-44-0x0000000000400000-0x0000000000467000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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