metasploit | df42241d02dec74d1f183a2bf9941a95d478fff995af466253ced9be2df098b1

General

Target

f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
Size

252KB
MD5

f2055c244c9ca80341b138f066deef8e
SHA1

d2955fa2314e23e920220cb13cd06ddcc977be8f
SHA256

df42241d02dec74d1f183a2bf9941a95d478fff995af466253ced9be2df098b1
SHA512

22d7fa1b4de6ec38fbb7ebd602915bcd03bc8be16025d9f20e6fad25f2b34ef5f9435873467dbc931289c2e07cc2a65901b500f1594911437d64ceeef1560bcf
SSDEEP

3072:GDgeofzlgcn0DgSfyBW+CNLWAjVh9cdEK/Cp2Rm:ugecWls3cLVPcCK/Cs

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\wmpns64.exe = "C:\\Windows\\SysWOW64\\wmpns64.exe:*:Enabled:Windows Media HelpSvr"	wmpns64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpns64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpns64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpns64.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpns64.exe = "C:\\Windows\\SysWOW64\\wmpns64.exe:*:Enabled:Windows Media HelpSvr"	wmpns64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpns64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpns64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpns64.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
5052	wmpns64.exe

Executes dropped EXE 2 IoCs

pid	Process
4676	wmpns64.exe
5052	wmpns64.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 HelpSvr = "C:\\Windows\\SysWOW64\\wmpns64.exe"	wmpns64.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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpns64.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpns64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	wmpns64.exe
File opened for modification	C:\Windows\SysWOW64\wmpns64.exe	wmpns64.exe
File opened for modification	C:\Windows\SysWOW64\	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wmpns64.exe	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\wmpns64.exe	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2984 set thread context of 992	2984	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	82
PID 4676 set thread context of 5052	4676	wmpns64.exe	91

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/992-0-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/992-2-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/992-4-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/992-3-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/992-40-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/5052-44-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/5052-45-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/5052-46-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/5052-47-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/5052-48-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/5052-49-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/5052-56-0x0000000000400000-0x0000000000464000-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	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpns64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpns64.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
992	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
992	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
992	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
992	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe
5052	wmpns64.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2984 wrote to memory of 992	2984	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	82
PID 2984 wrote to memory of 992	2984	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	82
PID 2984 wrote to memory of 992	2984	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	82
PID 2984 wrote to memory of 992	2984	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	82
PID 2984 wrote to memory of 992	2984	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	82
PID 2984 wrote to memory of 992	2984	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	82
PID 2984 wrote to memory of 992	2984	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	82
PID 2984 wrote to memory of 992	2984	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	82
PID 992 wrote to memory of 4676	992	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	85
PID 992 wrote to memory of 4676	992	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	85
PID 992 wrote to memory of 4676	992	f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe	85
PID 4676 wrote to memory of 5052	4676	wmpns64.exe	91
PID 4676 wrote to memory of 5052	4676	wmpns64.exe	91
PID 4676 wrote to memory of 5052	4676	wmpns64.exe	91
PID 4676 wrote to memory of 5052	4676	wmpns64.exe	91
PID 4676 wrote to memory of 5052	4676	wmpns64.exe	91
PID 4676 wrote to memory of 5052	4676	wmpns64.exe	91
PID 4676 wrote to memory of 5052	4676	wmpns64.exe	91
PID 4676 wrote to memory of 5052	4676	wmpns64.exe	91
PID 5052 wrote to memory of 3448	5052	wmpns64.exe	56
PID 5052 wrote to memory of 3448	5052	wmpns64.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3448
- C:\Users\Admin\AppData\Local\Temp\f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2984
- - C:\Users\Admin\AppData\Local\Temp\f2055c244c9ca80341b138f066deef8e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f2055c244c9ca80341b138f066deef8e_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:992
  - - C:\Windows\SysWOW64\wmpns64.exe
      "C:\Windows\SysWOW64\wmpns64.exe" C:\Users\Admin\AppData\Local\Temp\F2055C~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4676
    - - C:\Windows\SysWOW64\wmpns64.exe
        
        "C:\Windows\SysWOW64\wmpns64.exe" C:\Users\Admin\AppData\Local\Temp\F2055C~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:5052

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\wmpns64.exe

Filesize
252KB

MD5
f2055c244c9ca80341b138f066deef8e

SHA1
d2955fa2314e23e920220cb13cd06ddcc977be8f

SHA256
df42241d02dec74d1f183a2bf9941a95d478fff995af466253ced9be2df098b1

SHA512
22d7fa1b4de6ec38fbb7ebd602915bcd03bc8be16025d9f20e6fad25f2b34ef5f9435873467dbc931289c2e07cc2a65901b500f1594911437d64ceeef1560bcf

Download Submit
memory/992-0-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/992-2-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/992-4-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/992-3-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/992-40-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/5052-44-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/5052-45-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/5052-46-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/5052-47-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/5052-48-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/5052-49-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/5052-56-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads