metasploit | e324859c8cec900b72159b9151dd989fe94d5d52236084ffd917c0825a993f28

General

Target

a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
Size

252KB
MD5

a9faa6fb206c7aa17b9fcc4f9b73faba
SHA1

a70f26ce66aa23e71bd579abeba56d9696e0aac2
SHA256

e324859c8cec900b72159b9151dd989fe94d5d52236084ffd917c0825a993f28
SHA512

ef8f01eb19e076f5e552c9a5fea73848fe32a063cac279fa699cddcc4c464cc100ee757054ae46d29bc404d605a56654169a0e5585ceb3da91083283d257e591
SSDEEP

3072:KeRW3RvtrN9jrg7RYuXFsvDK+urcDbBc3rGJrci0uQufeax9Fm9Nfp/:K8u9jk7RYucKwbB0axngRax9FQfp/

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\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpsc32.exe = "C:\\Windows\\SysWOW64\\wmpsc32.exe:*:Enabled:WinMedia Core"	wmpsc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpsc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpsc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpsc32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpsc32.exe = "C:\\Windows\\SysWOW64\\wmpsc32.exe:*:Enabled:WinMedia Core"	wmpsc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpsc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpsc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpsc32.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4748	wmpsc32.exe

Executes dropped EXE 2 IoCs

pid	Process
2768	wmpsc32.exe
4748	wmpsc32.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 Core = "C:\\Windows\\SysWOW64\\wmpsc32.exe"	wmpsc32.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	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpsc32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpsc32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wmpsc32.exe	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\wmpsc32.exe	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\	wmpsc32.exe
File opened for modification	C:\Windows\SysWOW64\wmpsc32.exe	wmpsc32.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4104 set thread context of 2556	4104	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	83
PID 2768 set thread context of 4748	2768	wmpsc32.exe	86

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2556-0-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral2/memory/2556-2-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral2/memory/2556-4-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral2/memory/2556-3-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral2/memory/4748-43-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral2/memory/2556-44-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral2/memory/4748-46-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral2/memory/4748-47-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral2/memory/4748-48-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral2/memory/4748-55-0x0000000000400000-0x0000000000466000-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	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpsc32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpsc32.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
2556	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
2556	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
2556	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
2556	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe
4748	wmpsc32.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 2556	4104	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	83
PID 4104 wrote to memory of 2556	4104	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	83
PID 4104 wrote to memory of 2556	4104	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	83
PID 4104 wrote to memory of 2556	4104	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	83
PID 4104 wrote to memory of 2556	4104	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	83
PID 4104 wrote to memory of 2556	4104	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	83
PID 4104 wrote to memory of 2556	4104	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	83
PID 4104 wrote to memory of 2556	4104	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	83
PID 2556 wrote to memory of 2768	2556	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	85
PID 2556 wrote to memory of 2768	2556	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	85
PID 2556 wrote to memory of 2768	2556	a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe	85
PID 2768 wrote to memory of 4748	2768	wmpsc32.exe	86
PID 2768 wrote to memory of 4748	2768	wmpsc32.exe	86
PID 2768 wrote to memory of 4748	2768	wmpsc32.exe	86
PID 2768 wrote to memory of 4748	2768	wmpsc32.exe	86
PID 2768 wrote to memory of 4748	2768	wmpsc32.exe	86
PID 2768 wrote to memory of 4748	2768	wmpsc32.exe	86
PID 2768 wrote to memory of 4748	2768	wmpsc32.exe	86
PID 2768 wrote to memory of 4748	2768	wmpsc32.exe	86
PID 4748 wrote to memory of 3556	4748	wmpsc32.exe	56
PID 4748 wrote to memory of 3556	4748	wmpsc32.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3556
- C:\Users\Admin\AppData\Local\Temp\a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4104
- - C:\Users\Admin\AppData\Local\Temp\a9faa6fb206c7aa17b9fcc4f9b73faba_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\a9faa6fb206c7aa17b9fcc4f9b73faba_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:2556
  - - C:\Windows\SysWOW64\wmpsc32.exe
      "C:\Windows\SysWOW64\wmpsc32.exe" C:\Users\Admin\AppData\Local\Temp\A9FAA6~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2768
    - - C:\Windows\SysWOW64\wmpsc32.exe
        
        "C:\Windows\SysWOW64\wmpsc32.exe" C:\Users\Admin\AppData\Local\Temp\A9FAA6~1.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:4748

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\wmpsc32.exe

Filesize
252KB

MD5
a9faa6fb206c7aa17b9fcc4f9b73faba

SHA1
a70f26ce66aa23e71bd579abeba56d9696e0aac2

SHA256
e324859c8cec900b72159b9151dd989fe94d5d52236084ffd917c0825a993f28

SHA512
ef8f01eb19e076f5e552c9a5fea73848fe32a063cac279fa699cddcc4c464cc100ee757054ae46d29bc404d605a56654169a0e5585ceb3da91083283d257e591

Download Submit
memory/2556-0-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2556-2-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2556-4-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2556-3-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2556-44-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4748-43-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4748-46-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4748-47-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4748-48-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4748-55-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads