metasploit | e4ce036da7c659bbca369d433038b17cc09d1cad0efd09c65c8cf6c27c844f2a

General

Target

JaffaCakes118_0476649343fa393b6229a069742cce62.exe
Size

133KB
MD5

0476649343fa393b6229a069742cce62
SHA1

1ef55eba1030fd41109d2f3bdc550b2434d7ad46
SHA256

e4ce036da7c659bbca369d433038b17cc09d1cad0efd09c65c8cf6c27c844f2a
SHA512

fb0c26b8b19b1e978a1f55668c4562c91b777f58f146f89532989da75b1e4bf6969fa7554c08a07bac38092647334c6136654f6ea878cf1ae5ef53e1359c8ccb
SSDEEP

3072:pwWTgyslEG/cXo/QZte67g9Nch9kxfkAEnwIFdxlLAbX9JH7s:eWcy20XxZte6och9kZfETFrlLAbtJH7s

Score

10^/10

metasploit backdoor defense_evasion discovery 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 4 IoCs

defense_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	wmpkh32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpkh32.exe = "C:\\Windows\\SysWOW64\\wmpkh32.exe:*:Enabled:WinMedia Server"	wmpkh32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpkh32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpkh32.exe = "C:\\Windows\\SysWOW64\\wmpkh32.exe:*:Enabled:WinMedia Server"	wmpkh32.exe

Deletes itself 1 IoCs

pid	Process
2936	wmpkh32.exe

Executes dropped EXE 2 IoCs

pid	Process
2948	wmpkh32.exe
2936	wmpkh32.exe

Loads dropped DLL 3 IoCs

pid	Process
1648	JaffaCakes118_0476649343fa393b6229a069742cce62.exe
1648	JaffaCakes118_0476649343fa393b6229a069742cce62.exe
2948	wmpkh32.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 Server = "C:\\Windows\\SysWOW64\\wmpkh32.exe"	wmpkh32.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	wmpkh32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	JaffaCakes118_0476649343fa393b6229a069742cce62.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	JaffaCakes118_0476649343fa393b6229a069742cce62.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpkh32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	JaffaCakes118_0476649343fa393b6229a069742cce62.exe
File opened for modification	C:\Windows\SysWOW64\wmpkh32.exe	JaffaCakes118_0476649343fa393b6229a069742cce62.exe
File created	C:\Windows\SysWOW64\wmpkh32.exe	JaffaCakes118_0476649343fa393b6229a069742cce62.exe
File opened for modification	C:\Windows\SysWOW64\	wmpkh32.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2652 set thread context of 1648	2652	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	30
PID 2948 set thread context of 2936	2948	wmpkh32.exe	32

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1648-6-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1648-9-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1648-11-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1648-8-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1648-4-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1648-2-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1648-10-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1648-36-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/2936-37-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/2936-38-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/2936-42-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/2936-43-0x0000000000400000-0x0000000000451000-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	JaffaCakes118_0476649343fa393b6229a069742cce62.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0476649343fa393b6229a069742cce62.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpkh32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpkh32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1648	JaffaCakes118_0476649343fa393b6229a069742cce62.exe
1648	JaffaCakes118_0476649343fa393b6229a069742cce62.exe
2936	wmpkh32.exe
2936	wmpkh32.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 1648	2652	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	30
PID 2652 wrote to memory of 1648	2652	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	30
PID 2652 wrote to memory of 1648	2652	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	30
PID 2652 wrote to memory of 1648	2652	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	30
PID 2652 wrote to memory of 1648	2652	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	30
PID 2652 wrote to memory of 1648	2652	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	30
PID 2652 wrote to memory of 1648	2652	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	30
PID 1648 wrote to memory of 2948	1648	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	31
PID 1648 wrote to memory of 2948	1648	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	31
PID 1648 wrote to memory of 2948	1648	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	31
PID 1648 wrote to memory of 2948	1648	JaffaCakes118_0476649343fa393b6229a069742cce62.exe	31
PID 2948 wrote to memory of 2936	2948	wmpkh32.exe	32
PID 2948 wrote to memory of 2936	2948	wmpkh32.exe	32
PID 2948 wrote to memory of 2936	2948	wmpkh32.exe	32
PID 2948 wrote to memory of 2936	2948	wmpkh32.exe	32
PID 2948 wrote to memory of 2936	2948	wmpkh32.exe	32
PID 2948 wrote to memory of 2936	2948	wmpkh32.exe	32
PID 2948 wrote to memory of 2936	2948	wmpkh32.exe	32
PID 2936 wrote to memory of 1204	2936	wmpkh32.exe	21
PID 2936 wrote to memory of 1204	2936	wmpkh32.exe	21

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1204
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0476649343fa393b6229a069742cce62.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0476649343fa393b6229a069742cce62.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2652
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0476649343fa393b6229a069742cce62.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0476649343fa393b6229a069742cce62.exe"
    3⤵
    - Loads dropped DLL
    - 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:1648
  - - C:\Windows\SysWOW64\wmpkh32.exe
      "C:\Windows\SysWOW64\wmpkh32.exe" C:\Users\Admin\AppData\Local\Temp\JAFFAC~1.EXE
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2948
    - - C:\Windows\SysWOW64\wmpkh32.exe
        
        "C:\Windows\SysWOW64\wmpkh32.exe" C:\Users\Admin\AppData\Local\Temp\JAFFAC~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:2936

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

2

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

\Windows\SysWOW64\wmpkh32.exe

Filesize
133KB

MD5
0476649343fa393b6229a069742cce62

SHA1
1ef55eba1030fd41109d2f3bdc550b2434d7ad46

SHA256
e4ce036da7c659bbca369d433038b17cc09d1cad0efd09c65c8cf6c27c844f2a

SHA512
fb0c26b8b19b1e978a1f55668c4562c91b777f58f146f89532989da75b1e4bf6969fa7554c08a07bac38092647334c6136654f6ea878cf1ae5ef53e1359c8ccb

Download Submit
memory/1204-41-0x0000000002DD0000-0x0000000002DD1000-memory.dmp

Filesize
4KB

Download
memory/1204-39-0x0000000002B70000-0x0000000002B8E000-memory.dmp

Filesize
120KB

Download
memory/1648-6-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1648-8-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1648-4-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1648-2-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1648-9-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1648-10-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1648-36-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1648-0-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1648-11-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2936-38-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2936-37-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2936-42-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2936-43-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads