metasploit | 272830c30a076b42c7db3ce31f22daaeac7dedeeacaa27ac54ae74e9f19b12e7

General

Target

d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
Size

221KB
MD5

d637c39dcc5f4fd65c40e11906d12d61
SHA1

a1b7eb71522bb9d17c6ae3ed6bdd0f24619a1bbc
SHA256

272830c30a076b42c7db3ce31f22daaeac7dedeeacaa27ac54ae74e9f19b12e7
SHA512

e81c377d13ea37e42c78e09d27d321856709931f36f658eecd7f9d2b99c8f98f7769abfa07a45e122a497cf1128d2a4dfde2754999e20ee7fea8e70203e5833f
SSDEEP

3072:F7wuODVbE2EPaZ9JwteJiO9RLk2/3IUT52PjkIx0ohC8lZ1NbJ612bkka:5bGVvasNfQP7M8lZlRQ

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	wmpdc86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpdc86.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpdc86.exe = "C:\\Windows\\SysWOW64\\wmpdc86.exe:*:Enabled:Windows Network Core"	wmpdc86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpdc86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpdc86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpdc86.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpdc86.exe = "C:\\Windows\\SysWOW64\\wmpdc86.exe:*:Enabled:Windows Network Core"	wmpdc86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpdc86.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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3968	wmpdc86.exe

Executes dropped EXE 2 IoCs

pid	Process
2972	wmpdc86.exe
3968	wmpdc86.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5084-0-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/5084-2-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/5084-3-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/5084-4-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/3968-43-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/5084-44-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/5084-47-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/5084-46-0x0000000000400000-0x000000000043F000-memory.dmp	upx
behavioral2/memory/3968-48-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/3968-49-0x0000000000400000-0x000000000044C000-memory.dmp	upx

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 Network Core = "C:\\Windows\\SysWOW64\\wmpdc86.exe"	wmpdc86.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	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpdc86.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpdc86.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wmpdc86.exe	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\wmpdc86.exe	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\	wmpdc86.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1728 set thread context of 5084	1728	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe	83
PID 2972 set thread context of 3968	2972	wmpdc86.exe	95

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	wmpdc86.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpdc86.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
5084	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
5084	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
5084	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
5084	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
3968	wmpdc86.exe
3968	wmpdc86.exe
3968	wmpdc86.exe
3968	wmpdc86.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
1728	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 5084	1728	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe	83
PID 1728 wrote to memory of 5084	1728	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe	83
PID 1728 wrote to memory of 5084	1728	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe	83
PID 1728 wrote to memory of 5084	1728	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe	83
PID 1728 wrote to memory of 5084	1728	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe	83
PID 1728 wrote to memory of 5084	1728	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe	83
PID 1728 wrote to memory of 5084	1728	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe	83
PID 5084 wrote to memory of 2972	5084	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe	93
PID 5084 wrote to memory of 2972	5084	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe	93
PID 5084 wrote to memory of 2972	5084	d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe	93
PID 2972 wrote to memory of 3968	2972	wmpdc86.exe	95
PID 2972 wrote to memory of 3968	2972	wmpdc86.exe	95
PID 2972 wrote to memory of 3968	2972	wmpdc86.exe	95
PID 2972 wrote to memory of 3968	2972	wmpdc86.exe	95
PID 2972 wrote to memory of 3968	2972	wmpdc86.exe	95
PID 2972 wrote to memory of 3968	2972	wmpdc86.exe	95
PID 2972 wrote to memory of 3968	2972	wmpdc86.exe	95
PID 3968 wrote to memory of 3460	3968	wmpdc86.exe	55
PID 3968 wrote to memory of 3460	3968	wmpdc86.exe	55

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3460
- C:\Users\Admin\AppData\Local\Temp\d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:1728
- - C:\Users\Admin\AppData\Local\Temp\d637c39dcc5f4fd65c40e11906d12d61_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\d637c39dcc5f4fd65c40e11906d12d61_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:5084
  - - C:\Windows\SysWOW64\wmpdc86.exe
      "C:\Windows\SysWOW64\wmpdc86.exe" C:\Users\Admin\AppData\Local\Temp\D637C3~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2972
    - - C:\Windows\SysWOW64\wmpdc86.exe
        
        "C:\Windows\SysWOW64\wmpdc86.exe" C:\Users\Admin\AppData\Local\Temp\D637C3~1.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:3968

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\wmpdc86.exe

Filesize
221KB

MD5
d637c39dcc5f4fd65c40e11906d12d61

SHA1
a1b7eb71522bb9d17c6ae3ed6bdd0f24619a1bbc

SHA256
272830c30a076b42c7db3ce31f22daaeac7dedeeacaa27ac54ae74e9f19b12e7

SHA512
e81c377d13ea37e42c78e09d27d321856709931f36f658eecd7f9d2b99c8f98f7769abfa07a45e122a497cf1128d2a4dfde2754999e20ee7fea8e70203e5833f

Download Submit
memory/3968-43-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3968-48-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3968-49-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/5084-0-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/5084-2-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/5084-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/5084-4-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/5084-44-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/5084-47-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/5084-46-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads