metasploit | f9bf03af636d85249ffc3d6929546e2d619e3f05f829e820ecbccc08546c536a

General

Target

ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
Size

252KB
MD5

ef8785365ce25c4be0e3efd880f8eb7f
SHA1

e0a87ea3c4b95994a9f9d0def4c7a4e5bb7f5448
SHA256

f9bf03af636d85249ffc3d6929546e2d619e3f05f829e820ecbccc08546c536a
SHA512

6dae5d29328c91c089a4b2b1026226b7f3982d6b4ed04967fd4fefd24bbf6ca252c677518bde49fa3b3ab312634d80851594102b5c84390c2a2546ebe8cfe351
SSDEEP

3072:GRuR5R8v3IYAfKRyKGxo9GCeSvgXFLxNNfSumm38oeI7gvERZ3vy4CDX+dBFbw:ikOv3dANxo00ILlfSPmMxDCZ3vyW

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
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpdl86.exe = "C:\\Windows\\SysWOW64\\wmpdl86.exe:*:Enabled:Windows Media Launcher"	wmpdl86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpdl86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpdl86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpdl86.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpdl86.exe = "C:\\Windows\\SysWOW64\\wmpdl86.exe:*:Enabled:Windows Media Launcher"	wmpdl86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpdl86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpdl86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpdl86.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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1156	wmpdl86.exe

Executes dropped EXE 2 IoCs

pid	Process
4008	wmpdl86.exe
1156	wmpdl86.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4308-1-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/4308-4-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/4308-6-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/4308-5-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1156-45-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/4308-47-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1156-49-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1156-50-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1156-51-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1156-57-0x0000000000400000-0x0000000000456000-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 Media Launcher = "C:\\Windows\\SysWOW64\\wmpdl86.exe"	wmpdl86.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	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpdl86.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpdl86.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wmpdl86.exe	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\wmpdl86.exe	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\	wmpdl86.exe
File opened for modification	C:\Windows\SysWOW64\wmpdl86.exe	wmpdl86.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2956 set thread context of 4308	2956	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	89
PID 4008 set thread context of 1156	4008	wmpdl86.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	wmpdl86.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpdl86.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
4308	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
4308	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
4308	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
4308	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe
1156	wmpdl86.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2956	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
4008	wmpdl86.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 4308	2956	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	89
PID 2956 wrote to memory of 4308	2956	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	89
PID 2956 wrote to memory of 4308	2956	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	89
PID 2956 wrote to memory of 4308	2956	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	89
PID 2956 wrote to memory of 4308	2956	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	89
PID 2956 wrote to memory of 4308	2956	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	89
PID 2956 wrote to memory of 4308	2956	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	89
PID 2956 wrote to memory of 4308	2956	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	89
PID 4308 wrote to memory of 4008	4308	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	94
PID 4308 wrote to memory of 4008	4308	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	94
PID 4308 wrote to memory of 4008	4308	ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe	94
PID 4008 wrote to memory of 1156	4008	wmpdl86.exe	95
PID 4008 wrote to memory of 1156	4008	wmpdl86.exe	95
PID 4008 wrote to memory of 1156	4008	wmpdl86.exe	95
PID 4008 wrote to memory of 1156	4008	wmpdl86.exe	95
PID 4008 wrote to memory of 1156	4008	wmpdl86.exe	95
PID 4008 wrote to memory of 1156	4008	wmpdl86.exe	95
PID 4008 wrote to memory of 1156	4008	wmpdl86.exe	95
PID 4008 wrote to memory of 1156	4008	wmpdl86.exe	95
PID 1156 wrote to memory of 3420	1156	wmpdl86.exe	56
PID 1156 wrote to memory of 3420	1156	wmpdl86.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3420
- C:\Users\Admin\AppData\Local\Temp\ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:2956
- - C:\Users\Admin\AppData\Local\Temp\ef8785365ce25c4be0e3efd880f8eb7f_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\ef8785365ce25c4be0e3efd880f8eb7f_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:4308
  - - C:\Windows\SysWOW64\wmpdl86.exe
      "C:\Windows\SysWOW64\wmpdl86.exe" C:\Users\Admin\AppData\Local\Temp\EF8785~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:4008
    - - C:\Windows\SysWOW64\wmpdl86.exe
        
        "C:\Windows\SysWOW64\wmpdl86.exe" C:\Users\Admin\AppData\Local\Temp\EF8785~1.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:1156

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3804,i,3387628439405076340,17957358341235678872,262144 --variations-seed-version --mojo-platform-channel-handle=4248 /prefetch:8
1⤵
PID:1564

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\wmpdl86.exe

Filesize
252KB

MD5
ef8785365ce25c4be0e3efd880f8eb7f

SHA1
e0a87ea3c4b95994a9f9d0def4c7a4e5bb7f5448

SHA256
f9bf03af636d85249ffc3d6929546e2d619e3f05f829e820ecbccc08546c536a

SHA512
6dae5d29328c91c089a4b2b1026226b7f3982d6b4ed04967fd4fefd24bbf6ca252c677518bde49fa3b3ab312634d80851594102b5c84390c2a2546ebe8cfe351

Download Submit
memory/1156-49-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1156-57-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1156-51-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1156-50-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1156-45-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2956-2-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2956-0-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4008-43-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4308-4-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4308-47-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4308-5-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4308-6-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4308-1-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads