metasploit | caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc

General

Target

caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
Size

252KB
MD5

fd2eb40deffc206e1fa49443d9a96607
SHA1

64fcdade09131cd1074fe8ba5e96992d36361adb
SHA256

caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc
SHA512

06db1a2eac18dfbe0a6be641e9f88b46b4d621644db402e570cfdeb9f6e22f5b6ab453475ba6ab238f6b63c56b62aa4d099deb52fe8b270a4d396145d6924ec7
SSDEEP

6144:lNUKpKGN17ZDCUJlubsow5zVPuYK1QLj:lrpDN3uUJlHZNlsU

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

Modify Existing Service

T1031

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpbd64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpbd64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpbd64.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpbd64.exe = "C:\\Windows\\SysWOW64\\wmpbd64.exe:*:Enabled:Windows Media Monitor"	wmpbd64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpbd64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpbd64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpbd64.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpbd64.exe = "C:\\Windows\\SysWOW64\\wmpbd64.exe:*:Enabled:Windows Media Monitor"	wmpbd64.exe

Executes dropped EXE 2 IoCs

pid	Process
4908	wmpbd64.exe
1604	wmpbd64.exe

Sets file execution options in registry 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MsMpEng.exe	wmpbd64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MsMpEng.exe\Debugger = "CMD /C>null"	wmpbd64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe	wmpbd64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe\Debugger = "CMD /C>null"	wmpbd64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\epplauncher.exe	wmpbd64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\epplauncher.exe\Debugger = "CMD /C>null"	wmpbd64.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2228-133-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/2228-135-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/2228-136-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/2228-137-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/2228-141-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/1604-148-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/1604-149-0x0000000000400000-0x0000000000463000-memory.dmp	upx

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	wmpbd64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Media Monitor = "C:\\Windows\\SysWOW64\\wmpbd64.exe"	wmpbd64.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	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpbd64.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpbd64.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
File opened for modification	C:\Windows\SysWOW64\wmpbd64.exe	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
File created	C:\Windows\SysWOW64\wmpbd64.exe	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
File opened for modification	C:\Windows\SysWOW64\	wmpbd64.exe
File opened for modification	C:\Windows\SysWOW64\wmpbd64.exe	wmpbd64.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2636 set thread context of 2228	2636	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	80
PID 4908 set thread context of 1604	4908	wmpbd64.exe	82

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

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\	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
2228	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
2228	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
2228	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
2228	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe
1604	wmpbd64.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 2228	2636	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	80
PID 2636 wrote to memory of 2228	2636	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	80
PID 2636 wrote to memory of 2228	2636	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	80
PID 2636 wrote to memory of 2228	2636	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	80
PID 2636 wrote to memory of 2228	2636	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	80
PID 2636 wrote to memory of 2228	2636	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	80
PID 2636 wrote to memory of 2228	2636	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	80
PID 2636 wrote to memory of 2228	2636	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	80
PID 2228 wrote to memory of 4908	2228	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	81
PID 2228 wrote to memory of 4908	2228	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	81
PID 2228 wrote to memory of 4908	2228	caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe	81
PID 4908 wrote to memory of 1604	4908	wmpbd64.exe	82
PID 4908 wrote to memory of 1604	4908	wmpbd64.exe	82
PID 4908 wrote to memory of 1604	4908	wmpbd64.exe	82
PID 4908 wrote to memory of 1604	4908	wmpbd64.exe	82
PID 4908 wrote to memory of 1604	4908	wmpbd64.exe	82
PID 4908 wrote to memory of 1604	4908	wmpbd64.exe	82
PID 4908 wrote to memory of 1604	4908	wmpbd64.exe	82
PID 4908 wrote to memory of 1604	4908	wmpbd64.exe	82
PID 1604 wrote to memory of 376	1604	wmpbd64.exe	40
PID 1604 wrote to memory of 376	1604	wmpbd64.exe	40

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:376
- C:\Users\Admin\AppData\Local\Temp\caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
  "C:\Users\Admin\AppData\Local\Temp\caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2636
- - C:\Users\Admin\AppData\Local\Temp\caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe
    "C:\Users\Admin\AppData\Local\Temp\caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc.exe"
    3⤵
    - 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:2228
  - - C:\Windows\SysWOW64\wmpbd64.exe
      "C:\Windows\SysWOW64\wmpbd64.exe" C:\Users\Admin\AppData\Local\Temp\CAAAF8~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:4908
    - - C:\Windows\SysWOW64\wmpbd64.exe
        
        "C:\Windows\SysWOW64\wmpbd64.exe" C:\Users\Admin\AppData\Local\Temp\CAAAF8~1.EXE
        5⤵
        Modifies firewall policy service
        Executes dropped EXE
        Sets file execution options in registry
        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:1604

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

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

C:\Windows\SysWOW64\wmpbd64.exe

Filesize
252KB

MD5
fd2eb40deffc206e1fa49443d9a96607

SHA1
64fcdade09131cd1074fe8ba5e96992d36361adb

SHA256
caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc

SHA512
06db1a2eac18dfbe0a6be641e9f88b46b4d621644db402e570cfdeb9f6e22f5b6ab453475ba6ab238f6b63c56b62aa4d099deb52fe8b270a4d396145d6924ec7

Download Submit
C:\Windows\SysWOW64\wmpbd64.exe

Filesize
252KB

MD5
fd2eb40deffc206e1fa49443d9a96607

SHA1
64fcdade09131cd1074fe8ba5e96992d36361adb

SHA256
caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc

SHA512
06db1a2eac18dfbe0a6be641e9f88b46b4d621644db402e570cfdeb9f6e22f5b6ab453475ba6ab238f6b63c56b62aa4d099deb52fe8b270a4d396145d6924ec7

Download Submit
C:\Windows\SysWOW64\wmpbd64.exe

Filesize
252KB

MD5
fd2eb40deffc206e1fa49443d9a96607

SHA1
64fcdade09131cd1074fe8ba5e96992d36361adb

SHA256
caaaf833190dfa0dbc0aedc9f4b1f1e46b40d5d0ad810c9dfdcbed651edd44cc

SHA512
06db1a2eac18dfbe0a6be641e9f88b46b4d621644db402e570cfdeb9f6e22f5b6ab453475ba6ab238f6b63c56b62aa4d099deb52fe8b270a4d396145d6924ec7

Download Submit
memory/1604-148-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1604-149-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/2228-137-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/2228-136-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/2228-135-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/2228-141-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/2228-133-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads