metasploit | a87781b93eee147fcf52c7eb02b2fdbc62eebfbc9b719263f62ed0875290e8ee

General

Target

cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
Size

247KB
MD5

cf4847f50e4c1c0392e1e95876e3d1ca
SHA1

5cf1ba3ee7354a9d1324cc7caaf9553b2e702680
SHA256

a87781b93eee147fcf52c7eb02b2fdbc62eebfbc9b719263f62ed0875290e8ee
SHA512

fa1ee4ec62ffee250fc9f276c8a1da0887b041cd0f45565ebc378c354c86815d85e2e93f059224874a2a7a5f6502545138b2f523e2682f2c3fe3f3ab7b139b7e
SSDEEP

6144:6/hJ0bg5YMCNZNOXnKvzbSSSSSeSS5SSySSQSS8SS3SS3SSGSSwSSCSSNSSQSSvL:6/h+0aMACaLbSSSSSeSS5SSySSQSS8SY

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
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpsn64.exe = "C:\\Windows\\SysWOW64\\wmpsn64.exe:*:Enabled:Windows Media Network"	wmpsn64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpsn64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpsn64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpsn64.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpsn64.exe = "C:\\Windows\\SysWOW64\\wmpsn64.exe:*:Enabled:Windows Media Network"	wmpsn64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpsn64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpsn64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpsn64.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	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1628	wmpsn64.exe

Executes dropped EXE 2 IoCs

pid	Process
740	wmpsn64.exe
1628	wmpsn64.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 Network = "C:\\Windows\\SysWOW64\\wmpsn64.exe"	wmpsn64.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	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpsn64.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpsn64.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wmpsn64.exe	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\wmpsn64.exe	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\	wmpsn64.exe
File opened for modification	C:\Windows\SysWOW64\wmpsn64.exe	wmpsn64.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4528 set thread context of 1668	4528	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	83
PID 740 set thread context of 1628	740	wmpsn64.exe	86

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1668-0-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral2/memory/1668-2-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral2/memory/1668-4-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral2/memory/1668-3-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral2/memory/1668-38-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral2/memory/1628-43-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral2/memory/1628-45-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral2/memory/1628-44-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral2/memory/1628-46-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral2/memory/1628-47-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral2/memory/1628-48-0x0000000000400000-0x0000000000465000-memory.dmp	upx
behavioral2/memory/1628-55-0x0000000000400000-0x0000000000465000-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	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpsn64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpsn64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
1668	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
1668	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
1668	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
1668	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe
1628	wmpsn64.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4528 wrote to memory of 1668	4528	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	83
PID 4528 wrote to memory of 1668	4528	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	83
PID 4528 wrote to memory of 1668	4528	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	83
PID 4528 wrote to memory of 1668	4528	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	83
PID 4528 wrote to memory of 1668	4528	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	83
PID 4528 wrote to memory of 1668	4528	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	83
PID 4528 wrote to memory of 1668	4528	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	83
PID 4528 wrote to memory of 1668	4528	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	83
PID 1668 wrote to memory of 740	1668	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	85
PID 1668 wrote to memory of 740	1668	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	85
PID 1668 wrote to memory of 740	1668	cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe	85
PID 740 wrote to memory of 1628	740	wmpsn64.exe	86
PID 740 wrote to memory of 1628	740	wmpsn64.exe	86
PID 740 wrote to memory of 1628	740	wmpsn64.exe	86
PID 740 wrote to memory of 1628	740	wmpsn64.exe	86
PID 740 wrote to memory of 1628	740	wmpsn64.exe	86
PID 740 wrote to memory of 1628	740	wmpsn64.exe	86
PID 740 wrote to memory of 1628	740	wmpsn64.exe	86
PID 740 wrote to memory of 1628	740	wmpsn64.exe	86
PID 1628 wrote to memory of 3432	1628	wmpsn64.exe	56
PID 1628 wrote to memory of 3432	1628	wmpsn64.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3432
- C:\Users\Admin\AppData\Local\Temp\cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4528
- - C:\Users\Admin\AppData\Local\Temp\cf4847f50e4c1c0392e1e95876e3d1ca_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\cf4847f50e4c1c0392e1e95876e3d1ca_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:1668
  - - C:\Windows\SysWOW64\wmpsn64.exe
      "C:\Windows\SysWOW64\wmpsn64.exe" C:\Users\Admin\AppData\Local\Temp\CF4847~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:740
    - - C:\Windows\SysWOW64\wmpsn64.exe
        
        "C:\Windows\SysWOW64\wmpsn64.exe" C:\Users\Admin\AppData\Local\Temp\CF4847~1.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:1628

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\wmpsn64.exe

Filesize
247KB

MD5
cf4847f50e4c1c0392e1e95876e3d1ca

SHA1
5cf1ba3ee7354a9d1324cc7caaf9553b2e702680

SHA256
a87781b93eee147fcf52c7eb02b2fdbc62eebfbc9b719263f62ed0875290e8ee

SHA512
fa1ee4ec62ffee250fc9f276c8a1da0887b041cd0f45565ebc378c354c86815d85e2e93f059224874a2a7a5f6502545138b2f523e2682f2c3fe3f3ab7b139b7e

Download Submit
memory/1628-46-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1628-43-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1628-45-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1628-44-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1628-47-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1628-48-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1628-55-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1668-4-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1668-3-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1668-2-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1668-38-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1668-0-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads