metasploit | 85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866ae

General

Target

85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
Size

247KB
MD5

ea0e2408ddfc42bcdddbb49ede686a90
SHA1

fd077ed435d222098f952af1dfe371ce66e5d0e0
SHA256

85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866ae
SHA512

d24d9b5d2ebd33d0bc34c8e8b96ecd4bdc8d3d46a2a03d9f5aa19e9788468f4a233b0e0fa1c141e921525bf198a798a6f79d4ebfb3bd25c53f98d0bbed38500c
SSDEEP

3072:+i4F1LEepvXtJBgF3lpmmk/QEUGB/QHCx/bz0s7fbpe2olMwW4EIc:+9dEeJX+FvX7HPssRlMwW4dc

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\AuthorizedApplications	wmptd32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmptd32.exe = "C:\\Windows\\SysWOW64\\wmptd32.exe:*:Enabled:Windows Data Service"	wmptd32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmptd32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmptd32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmptd32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmptd32.exe = "C:\\Windows\\SysWOW64\\wmptd32.exe:*:Enabled:Windows Data Service"	wmptd32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmptd32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmptd32.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe

Deletes itself 1 IoCs

pid	Process
1880	wmptd32.exe

Executes dropped EXE 2 IoCs

pid	Process
1648	wmptd32.exe
1880	wmptd32.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 Data Service = "C:\\Windows\\SysWOW64\\wmptd32.exe"	wmptd32.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	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmptd32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmptd32.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\wmptd32.exe	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
File created	C:\Windows\SysWOW64\wmptd32.exe	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
File opened for modification	C:\Windows\SysWOW64\	wmptd32.exe
File opened for modification	C:\Windows\SysWOW64\wmptd32.exe	wmptd32.exe
File opened for modification	C:\Windows\SysWOW64\	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2920 set thread context of 4324	2920	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	83
PID 1648 set thread context of 1880	1648	wmptd32.exe	86

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4324-1-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4324-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4324-6-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4324-7-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1880-46-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4324-48-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1880-50-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1880-51-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1880-52-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1880-59-0x0000000000400000-0x0000000000453000-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	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmptd32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmptd32.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
4324	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
4324	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
4324	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
4324	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe
1880	wmptd32.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
2920	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2920 wrote to memory of 4324	2920	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	83
PID 2920 wrote to memory of 4324	2920	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	83
PID 2920 wrote to memory of 4324	2920	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	83
PID 2920 wrote to memory of 4324	2920	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	83
PID 2920 wrote to memory of 4324	2920	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	83
PID 2920 wrote to memory of 4324	2920	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	83
PID 2920 wrote to memory of 4324	2920	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	83
PID 2920 wrote to memory of 4324	2920	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	83
PID 4324 wrote to memory of 1648	4324	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	85
PID 4324 wrote to memory of 1648	4324	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	85
PID 4324 wrote to memory of 1648	4324	85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe	85
PID 1648 wrote to memory of 1880	1648	wmptd32.exe	86
PID 1648 wrote to memory of 1880	1648	wmptd32.exe	86
PID 1648 wrote to memory of 1880	1648	wmptd32.exe	86
PID 1648 wrote to memory of 1880	1648	wmptd32.exe	86
PID 1648 wrote to memory of 1880	1648	wmptd32.exe	86
PID 1648 wrote to memory of 1880	1648	wmptd32.exe	86
PID 1648 wrote to memory of 1880	1648	wmptd32.exe	86
PID 1648 wrote to memory of 1880	1648	wmptd32.exe	86
PID 1880 wrote to memory of 3548	1880	wmptd32.exe	55
PID 1880 wrote to memory of 3548	1880	wmptd32.exe	55

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3548
- C:\Users\Admin\AppData\Local\Temp\85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
  "C:\Users\Admin\AppData\Local\Temp\85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:2920
- - C:\Users\Admin\AppData\Local\Temp\85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.exe
    "C:\Users\Admin\AppData\Local\Temp\85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866aeN.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:4324
  - - C:\Windows\SysWOW64\wmptd32.exe
      "C:\Windows\SysWOW64\wmptd32.exe" C:\Users\Admin\AppData\Local\Temp\85EFC7~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1648
    - - C:\Windows\SysWOW64\wmptd32.exe
        
        "C:\Windows\SysWOW64\wmptd32.exe" C:\Users\Admin\AppData\Local\Temp\85EFC7~1.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:1880

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\wmptd32.exe

Filesize
247KB

MD5
ea0e2408ddfc42bcdddbb49ede686a90

SHA1
fd077ed435d222098f952af1dfe371ce66e5d0e0

SHA256
85efc787867accc31df48f652a34d271b2570b9ae4913e8780ae387d11f866ae

SHA512
d24d9b5d2ebd33d0bc34c8e8b96ecd4bdc8d3d46a2a03d9f5aa19e9788468f4a233b0e0fa1c141e921525bf198a798a6f79d4ebfb3bd25c53f98d0bbed38500c

Download Submit
memory/1648-44-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1880-59-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1880-52-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1880-51-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1880-50-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1880-46-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2920-4-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2920-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4324-7-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4324-6-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4324-48-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4324-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4324-2-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4324-1-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads