metasploit | 31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58

General

Target

31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
Size

252KB
MD5

da4f4dec3704164ff1e0e867aee71140
SHA1

7d6f0bbd394694beb29b51c42afe2c72d2448dc5
SHA256

31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58
SHA512

f37aae7f0c913ac14cc7f5654a6bd0081c2be295fdf971180f3d678d4a29bea9f4f0fd22cc0ebe27fc90ba480c82df95f1da8ee36a2bc683a4c85d500cbc3d29
SSDEEP

6144:YCKpK87npwHLVYSE/A8xsTfr3F/MxObu3O+ObuBc/27777777777777777777775:KpT7MYS21xIfr3ZMh77777777777777v

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
Metasploit family
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\StandardProfile	wmpal64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpal64.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpal64.exe = "C:\\Windows\\SysWOW64\\wmpal64.exe:*:Enabled:Windows Media Panel"	wmpal64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpal64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpal64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpal64.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpal64.exe = "C:\\Windows\\SysWOW64\\wmpal64.exe:*:Enabled:Windows Media Panel"	wmpal64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpal64.exe

Event Triggered Execution: Image File Execution Options Injection 1 TTPs 6 IoCs

persistence

Image File Execution Options Injection

T1546.012

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MsMpEng.exe	wmpal64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MsMpEng.exe\Debugger = "CMD /C>null"	wmpal64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe	wmpal64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe\Debugger = "CMD /C>null"	wmpal64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\epplauncher.exe	wmpal64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\epplauncher.exe\Debugger = "CMD /C>null"	wmpal64.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe

Deletes itself 1 IoCs

pid	Process
1252	wmpal64.exe

Executes dropped EXE 2 IoCs

pid	Process
3272	wmpal64.exe
1252	wmpal64.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\Windows Media Panel = "C:\\Windows\\SysWOW64\\wmpal64.exe"	wmpal64.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	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpal64.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpal64.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\wmpal64.exe	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
File opened for modification	C:\Windows\SysWOW64\	wmpal64.exe
File opened for modification	C:\Windows\SysWOW64\wmpal64.exe	wmpal64.exe
File opened for modification	C:\Windows\SysWOW64\	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
File opened for modification	C:\Windows\SysWOW64\wmpal64.exe	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1504 set thread context of 1128	1504	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	82
PID 3272 set thread context of 1252	3272	wmpal64.exe	84

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1128-1-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/1128-4-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/1128-6-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/1128-5-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/1128-40-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/1252-47-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/1252-49-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/1252-50-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/1252-51-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/1252-58-0x0000000000400000-0x0000000000463000-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	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpal64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpal64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
1128	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
1128	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
1128	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
1128	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe
1252	wmpal64.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 1128	1504	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	82
PID 1504 wrote to memory of 1128	1504	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	82
PID 1504 wrote to memory of 1128	1504	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	82
PID 1504 wrote to memory of 1128	1504	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	82
PID 1504 wrote to memory of 1128	1504	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	82
PID 1504 wrote to memory of 1128	1504	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	82
PID 1504 wrote to memory of 1128	1504	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	82
PID 1504 wrote to memory of 1128	1504	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	82
PID 1128 wrote to memory of 3272	1128	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	83
PID 1128 wrote to memory of 3272	1128	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	83
PID 1128 wrote to memory of 3272	1128	31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe	83
PID 3272 wrote to memory of 1252	3272	wmpal64.exe	84
PID 3272 wrote to memory of 1252	3272	wmpal64.exe	84
PID 3272 wrote to memory of 1252	3272	wmpal64.exe	84
PID 3272 wrote to memory of 1252	3272	wmpal64.exe	84
PID 3272 wrote to memory of 1252	3272	wmpal64.exe	84
PID 3272 wrote to memory of 1252	3272	wmpal64.exe	84
PID 3272 wrote to memory of 1252	3272	wmpal64.exe	84
PID 3272 wrote to memory of 1252	3272	wmpal64.exe	84
PID 1252 wrote to memory of 3424	1252	wmpal64.exe	56
PID 1252 wrote to memory of 3424	1252	wmpal64.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3424
- C:\Users\Admin\AppData\Local\Temp\31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
  "C:\Users\Admin\AppData\Local\Temp\31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1504
- - C:\Users\Admin\AppData\Local\Temp\31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.exe
    "C:\Users\Admin\AppData\Local\Temp\31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58N.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:1128
  - - C:\Windows\SysWOW64\wmpal64.exe
      "C:\Windows\SysWOW64\wmpal64.exe" C:\Users\Admin\AppData\Local\Temp\31AD99~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3272
    - - C:\Windows\SysWOW64\wmpal64.exe
        
        "C:\Windows\SysWOW64\wmpal64.exe" C:\Users\Admin\AppData\Local\Temp\31AD99~1.EXE
        5⤵
        Modifies firewall policy service
        Event Triggered Execution: Image File Execution Options Injection
        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:1252

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

Event Triggered Execution

1

T1546

Image File Execution Options Injection

1

T1546.012

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

Event Triggered Execution

1

T1546

Image File Execution Options Injection

1

T1546.012

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\wmpal64.exe

Filesize
252KB

MD5
da4f4dec3704164ff1e0e867aee71140

SHA1
7d6f0bbd394694beb29b51c42afe2c72d2448dc5

SHA256
31ad99ec6f28588bdf59bc54f6c392423fed3274352bec062f89ffabbfda3f58

SHA512
f37aae7f0c913ac14cc7f5654a6bd0081c2be295fdf971180f3d678d4a29bea9f4f0fd22cc0ebe27fc90ba480c82df95f1da8ee36a2bc683a4c85d500cbc3d29

Download Submit
memory/1128-4-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1128-6-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1128-5-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1128-1-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1128-40-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1252-47-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1252-49-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1252-50-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1252-51-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1252-58-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1504-3-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1504-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3272-48-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads