metasploit | d09d43c83d9e425afcceba2ed756655c6befaffaa758a1ef45881b486982fa3c

General

Target

8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
Size

259KB
MD5

8fda1bd993bf7e541a3d244b643c8777
SHA1

a3ccd4cb9b932604c65e378d2757bd8fb24b7a22
SHA256

d09d43c83d9e425afcceba2ed756655c6befaffaa758a1ef45881b486982fa3c
SHA512

46b471f0d0c80b0eb9baec0d080228a6d0f3289d823a867f97cd57ab2da5bdc9163d8e4c21a57dbf2bfca0a5033aff44db9c3cb8b3856710ca932a7b1d69a06f
SSDEEP

3072:F2eqBjxXtnTPPJ9BwXMfjSp8nkmQ2oCQNqpWuQh8SDcrpGmm1QRCSqjarHroMzm9:F2eqlT7PJrOMfmpD24Nqeh/wYz5

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

Processes:

wmpbs32.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpbs32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpbs32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpbs32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpbs32.exe = "C:\\Windows\\SysWOW64\\wmpbs32.exe:*:Enabled:Windows iMedia Scheduler"	wmpbs32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpbs32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpbs32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpbs32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpbs32.exe = "C:\\Windows\\SysWOW64\\wmpbs32.exe:*:Enabled:Windows iMedia Scheduler"	wmpbs32.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

Processes:

8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

wmpbs32.exe

pid	Process
4540	wmpbs32.exe

Executes dropped EXE 2 IoCs

Processes:

wmpbs32.exewmpbs32.exe

pid	Process
1392	wmpbs32.exe
4540	wmpbs32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

wmpbs32.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows iMedia Scheduler = "C:\\Windows\\SysWOW64\\wmpbs32.exe"	wmpbs32.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

Processes:

8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exewmpbs32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpbs32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpbs32.exe

Drops file in System32 directory 5 IoCs

Processes:

8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exewmpbs32.exe

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wmpbs32.exe	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\wmpbs32.exe	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\	wmpbs32.exe
File opened for modification	C:\Windows\SysWOW64\wmpbs32.exe	wmpbs32.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exewmpbs32.exe

description	pid	Process	procid_target
PID 4488 set thread context of 4000	4488	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	93
PID 1392 set thread context of 4540	1392	wmpbs32.exe	97

UPX packed file 12 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4000-0-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4000-2-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4000-3-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4000-4-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4000-38-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4540-43-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4540-44-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4540-45-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4540-46-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4540-47-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4540-51-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/4540-58-0x0000000000400000-0x0000000000467000-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

Processes:

8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exewmpbs32.exewmpbs32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpbs32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpbs32.exe

Modifies registry class 1 IoCs

Processes:

8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exewmpbs32.exe

pid	Process
4000	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
4000	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
4000	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
4000	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe
4540	wmpbs32.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exewmpbs32.exewmpbs32.exe

description	pid	Process	procid_target
PID 4488 wrote to memory of 4000	4488	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	93
PID 4488 wrote to memory of 4000	4488	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	93
PID 4488 wrote to memory of 4000	4488	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	93
PID 4488 wrote to memory of 4000	4488	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	93
PID 4488 wrote to memory of 4000	4488	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	93
PID 4488 wrote to memory of 4000	4488	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	93
PID 4488 wrote to memory of 4000	4488	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	93
PID 4488 wrote to memory of 4000	4488	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	93
PID 4000 wrote to memory of 1392	4000	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	96
PID 4000 wrote to memory of 1392	4000	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	96
PID 4000 wrote to memory of 1392	4000	8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe	96
PID 1392 wrote to memory of 4540	1392	wmpbs32.exe	97
PID 1392 wrote to memory of 4540	1392	wmpbs32.exe	97
PID 1392 wrote to memory of 4540	1392	wmpbs32.exe	97
PID 1392 wrote to memory of 4540	1392	wmpbs32.exe	97
PID 1392 wrote to memory of 4540	1392	wmpbs32.exe	97
PID 1392 wrote to memory of 4540	1392	wmpbs32.exe	97
PID 1392 wrote to memory of 4540	1392	wmpbs32.exe	97
PID 1392 wrote to memory of 4540	1392	wmpbs32.exe	97
PID 4540 wrote to memory of 3360	4540	wmpbs32.exe	56
PID 4540 wrote to memory of 3360	4540	wmpbs32.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3360
- C:\Users\Admin\AppData\Local\Temp\8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4488
- - C:\Users\Admin\AppData\Local\Temp\8fda1bd993bf7e541a3d244b643c8777_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8fda1bd993bf7e541a3d244b643c8777_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:4000
  - - C:\Windows\SysWOW64\wmpbs32.exe
      "C:\Windows\SysWOW64\wmpbs32.exe" C:\Users\Admin\AppData\Local\Temp\8FDA1B~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1392
    - - C:\Windows\SysWOW64\wmpbs32.exe
        
        "C:\Windows\SysWOW64\wmpbs32.exe" C:\Users\Admin\AppData\Local\Temp\8FDA1B~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:4540

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\wmpbs32.exe

Filesize
259KB

MD5
8fda1bd993bf7e541a3d244b643c8777

SHA1
a3ccd4cb9b932604c65e378d2757bd8fb24b7a22

SHA256
d09d43c83d9e425afcceba2ed756655c6befaffaa758a1ef45881b486982fa3c

SHA512
46b471f0d0c80b0eb9baec0d080228a6d0f3289d823a867f97cd57ab2da5bdc9163d8e4c21a57dbf2bfca0a5033aff44db9c3cb8b3856710ca932a7b1d69a06f

Download Submit
memory/4000-0-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4000-2-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4000-3-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4000-4-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4000-38-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4540-43-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4540-44-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4540-45-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4540-46-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4540-47-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4540-51-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4540-58-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads