metasploit | 6bfcaffe8b1f9c6e550a85b1231baf6ac097fc80e007b2b8ee6a2a9d4c4a97c9

General

Target

dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
Size

181KB
MD5

dd77fc463713149bc8a9219c4986c84d
SHA1

aad6710346de1a340376b7138d1a9e31e6852f62
SHA256

6bfcaffe8b1f9c6e550a85b1231baf6ac097fc80e007b2b8ee6a2a9d4c4a97c9
SHA512

a9b2aeb8a47824e50fea7004e0f7eb5b9ee7f3dfe2c6392778786459e737f4ad348848958e2671dbcfcb03e5975e5586a12b795ba0c4e217d056eeb6c5bb3750
SSDEEP

3072:YpiaiB5FkoLYwHseTjp0YvdDIiAENi+TzRzOrNE9GAsSfN:YpckEnTV0YvdDzrNZzENE9pr

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\DomainProfile\AuthorizedApplications\List	wmpsk86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpsk86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpsk86.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpsk86.exe = "C:\\Windows\\SysWOW64\\wmpsk86.exe:*:Enabled:Windows Service Monitor"	wmpsk86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpsk86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpsk86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpsk86.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpsk86.exe = "C:\\Windows\\SysWOW64\\wmpsk86.exe:*:Enabled:Windows Service Monitor"	wmpsk86.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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3148	wmpsk86.exe

Executes dropped EXE 2 IoCs

pid	Process
2880	wmpsk86.exe
3148	wmpsk86.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1584-0-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/1584-2-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/1584-3-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/1584-4-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/3148-42-0x0000000000400000-0x0000000000431000-memory.dmp	upx
behavioral2/memory/1584-44-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/1584-45-0x0000000000400000-0x0000000000431000-memory.dmp	upx
behavioral2/memory/3148-46-0x0000000000400000-0x000000000044C000-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 Service Monitor = "C:\\Windows\\SysWOW64\\wmpsk86.exe"	wmpsk86.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	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpsk86.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpsk86.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\wmpsk86.exe	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\	wmpsk86.exe
File opened for modification	C:\Windows\SysWOW64\	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wmpsk86.exe	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 400 set thread context of 1584	400	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe	83
PID 2880 set thread context of 3148	2880	wmpsk86.exe	94

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	wmpsk86.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpsk86.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1584	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
1584	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
1584	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
1584	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
3148	wmpsk86.exe
3148	wmpsk86.exe
3148	wmpsk86.exe
3148	wmpsk86.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
2880	wmpsk86.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 400 wrote to memory of 1584	400	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe	83
PID 400 wrote to memory of 1584	400	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe	83
PID 400 wrote to memory of 1584	400	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe	83
PID 400 wrote to memory of 1584	400	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe	83
PID 400 wrote to memory of 1584	400	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe	83
PID 400 wrote to memory of 1584	400	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe	83
PID 400 wrote to memory of 1584	400	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe	83
PID 1584 wrote to memory of 2880	1584	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe	93
PID 1584 wrote to memory of 2880	1584	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe	93
PID 1584 wrote to memory of 2880	1584	dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe	93
PID 2880 wrote to memory of 3148	2880	wmpsk86.exe	94
PID 2880 wrote to memory of 3148	2880	wmpsk86.exe	94
PID 2880 wrote to memory of 3148	2880	wmpsk86.exe	94
PID 2880 wrote to memory of 3148	2880	wmpsk86.exe	94
PID 2880 wrote to memory of 3148	2880	wmpsk86.exe	94
PID 2880 wrote to memory of 3148	2880	wmpsk86.exe	94
PID 2880 wrote to memory of 3148	2880	wmpsk86.exe	94
PID 3148 wrote to memory of 3436	3148	wmpsk86.exe	56
PID 3148 wrote to memory of 3436	3148	wmpsk86.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3436
- C:\Users\Admin\AppData\Local\Temp\dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:400
- - C:\Users\Admin\AppData\Local\Temp\dd77fc463713149bc8a9219c4986c84d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\dd77fc463713149bc8a9219c4986c84d_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:1584
  - - C:\Windows\SysWOW64\wmpsk86.exe
      "C:\Windows\SysWOW64\wmpsk86.exe" C:\Users\Admin\AppData\Local\Temp\DD77FC~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:2880
    - - C:\Windows\SysWOW64\wmpsk86.exe
        
        "C:\Windows\SysWOW64\wmpsk86.exe" C:\Users\Admin\AppData\Local\Temp\DD77FC~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:3148

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\wmpsk86.exe

Filesize
181KB

MD5
dd77fc463713149bc8a9219c4986c84d

SHA1
aad6710346de1a340376b7138d1a9e31e6852f62

SHA256
6bfcaffe8b1f9c6e550a85b1231baf6ac097fc80e007b2b8ee6a2a9d4c4a97c9

SHA512
a9b2aeb8a47824e50fea7004e0f7eb5b9ee7f3dfe2c6392778786459e737f4ad348848958e2671dbcfcb03e5975e5586a12b795ba0c4e217d056eeb6c5bb3750

Download Submit
memory/1584-0-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1584-2-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1584-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1584-4-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1584-44-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1584-45-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3148-42-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3148-46-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads