metasploit | 89f940a414f3b0a75928caa9257d6c8871cf4ead5e41d656b1a14913ed4af781

General

Target

f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
Size

186KB
MD5

f573a71600e76c1c8031a4bdbe73f8a2
SHA1

63f8c5e6649a0334db142b33848e976a1982ac61
SHA256

89f940a414f3b0a75928caa9257d6c8871cf4ead5e41d656b1a14913ed4af781
SHA512

1e7fba9f08571f031a825dc602529aab64746bb5339b9fde5074ff1e886533cf16ee312795cc1cdfbc3033d6260f3e5df4f74369c71646f956bfba63749dfc9f
SSDEEP

3072:sUb0Ji2zWpP563QqHwvM50+BYqsRVxG8Mnda0c7iTbcmE83yS:rm3xHV+7A8MdhQ83yS

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\StandardProfile\AuthorizedApplications\List	wmpbl32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpbl32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpbl32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpbl32.exe = "C:\\Windows\\SysWOW64\\wmpbl32.exe:*:Enabled:WinMedia tServer"	wmpbl32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpbl32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpbl32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpbl32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpbl32.exe = "C:\\Windows\\SysWOW64\\wmpbl32.exe:*:Enabled:WinMedia tServer"	wmpbl32.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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4168	wmpbl32.exe

Executes dropped EXE 2 IoCs

pid	Process
4672	wmpbl32.exe
4168	wmpbl32.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\WinMedia tServer = "C:\\Windows\\SysWOW64\\wmpbl32.exe"	wmpbl32.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	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpbl32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpbl32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wmpbl32.exe	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\wmpbl32.exe	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\	wmpbl32.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1636 set thread context of 4708	1636	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe	82
PID 4672 set thread context of 4168	4672	wmpbl32.exe	86

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4708-0-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/4708-2-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/4708-3-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/4708-4-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/4708-40-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/4168-44-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/4708-45-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/4708-46-0x0000000000400000-0x0000000000433000-memory.dmp	upx
behavioral2/memory/4168-47-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/4168-48-0x0000000000400000-0x000000000044C000-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	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpbl32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpbl32.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4708	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
4708	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
4708	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
4708	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
4168	wmpbl32.exe
4168	wmpbl32.exe
4168	wmpbl32.exe
4168	wmpbl32.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 4708	1636	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe	82
PID 1636 wrote to memory of 4708	1636	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe	82
PID 1636 wrote to memory of 4708	1636	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe	82
PID 1636 wrote to memory of 4708	1636	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe	82
PID 1636 wrote to memory of 4708	1636	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe	82
PID 1636 wrote to memory of 4708	1636	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe	82
PID 1636 wrote to memory of 4708	1636	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe	82
PID 4708 wrote to memory of 4672	4708	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe	85
PID 4708 wrote to memory of 4672	4708	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe	85
PID 4708 wrote to memory of 4672	4708	f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe	85
PID 4672 wrote to memory of 4168	4672	wmpbl32.exe	86
PID 4672 wrote to memory of 4168	4672	wmpbl32.exe	86
PID 4672 wrote to memory of 4168	4672	wmpbl32.exe	86
PID 4672 wrote to memory of 4168	4672	wmpbl32.exe	86
PID 4672 wrote to memory of 4168	4672	wmpbl32.exe	86
PID 4672 wrote to memory of 4168	4672	wmpbl32.exe	86
PID 4672 wrote to memory of 4168	4672	wmpbl32.exe	86
PID 4168 wrote to memory of 3488	4168	wmpbl32.exe	56
PID 4168 wrote to memory of 3488	4168	wmpbl32.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3488
- C:\Users\Admin\AppData\Local\Temp\f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1636
- - C:\Users\Admin\AppData\Local\Temp\f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f573a71600e76c1c8031a4bdbe73f8a2_JaffaCakes118.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:4708
  - - C:\Windows\SysWOW64\wmpbl32.exe
      "C:\Windows\SysWOW64\wmpbl32.exe" C:\Users\Admin\AppData\Local\Temp\F573A7~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4672
    - - C:\Windows\SysWOW64\wmpbl32.exe
        
        "C:\Windows\SysWOW64\wmpbl32.exe" C:\Users\Admin\AppData\Local\Temp\F573A7~1.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:4168

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\wmpbl32.exe

Filesize
186KB

MD5
f573a71600e76c1c8031a4bdbe73f8a2

SHA1
63f8c5e6649a0334db142b33848e976a1982ac61

SHA256
89f940a414f3b0a75928caa9257d6c8871cf4ead5e41d656b1a14913ed4af781

SHA512
1e7fba9f08571f031a825dc602529aab64746bb5339b9fde5074ff1e886533cf16ee312795cc1cdfbc3033d6260f3e5df4f74369c71646f956bfba63749dfc9f

Download Submit
memory/4168-44-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4168-47-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4168-48-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4708-0-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4708-2-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4708-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4708-4-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4708-40-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4708-45-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4708-46-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads