metasploit | 453c338a42ecb62587c861b22cb93af69a07a5e20f0c70703141ba53f7e6e31c

General

Target

f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
Size

134KB
MD5

f305b41d1161f7c6a1972942e9231641
SHA1

fe22f8d6857b312294e409ed8a071d8a5c075f21
SHA256

453c338a42ecb62587c861b22cb93af69a07a5e20f0c70703141ba53f7e6e31c
SHA512

a6356f0b0262206602b65e3671f493cb58b5a802276040e9fac82a1c32e4cf6c8158cb51296486949cffad9f4834f56a3efb13fc9cbaf3db76310bdabfcc3758
SSDEEP

3072:vjtE0IU1lUoFD1oaa7yJp6zkwn1X8DiwPuCNe4nw3valp:btEs9FRC28zkiX8DNPugedav

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	wmpkc32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpkc32.exe = "C:\\Windows\\SysWOW64\\wmpkc32.exe:*:Enabled:WinMedia Config"	wmpkc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpkc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpkc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpkc32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpkc32.exe = "C:\\Windows\\SysWOW64\\wmpkc32.exe:*:Enabled:WinMedia Config"	wmpkc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpkc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpkc32.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	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3116	wmpkc32.exe

Executes dropped EXE 2 IoCs

pid	Process
2732	wmpkc32.exe
3116	wmpkc32.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 Config = "C:\\Windows\\SysWOW64\\wmpkc32.exe"	wmpkc32.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	wmpkc32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpkc32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wmpkc32.exe	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\wmpkc32.exe	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\	wmpkc32.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4384 set thread context of 1044	4384	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe	83
PID 2732 set thread context of 3116	2732	wmpkc32.exe	90

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1044-0-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/1044-2-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/1044-4-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/1044-3-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/1044-35-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/1044-41-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/3116-45-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/3116-46-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/3116-47-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/3116-48-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/3116-49-0x0000000000400000-0x0000000000451000-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	wmpkc32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmpkc32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1044	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
1044	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
1044	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
1044	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
3116	wmpkc32.exe
3116	wmpkc32.exe
3116	wmpkc32.exe
3116	wmpkc32.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4384 wrote to memory of 1044	4384	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe	83
PID 4384 wrote to memory of 1044	4384	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe	83
PID 4384 wrote to memory of 1044	4384	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe	83
PID 4384 wrote to memory of 1044	4384	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe	83
PID 4384 wrote to memory of 1044	4384	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe	83
PID 4384 wrote to memory of 1044	4384	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe	83
PID 4384 wrote to memory of 1044	4384	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe	83
PID 1044 wrote to memory of 2732	1044	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe	88
PID 1044 wrote to memory of 2732	1044	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe	88
PID 1044 wrote to memory of 2732	1044	f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe	88
PID 2732 wrote to memory of 3116	2732	wmpkc32.exe	90
PID 2732 wrote to memory of 3116	2732	wmpkc32.exe	90
PID 2732 wrote to memory of 3116	2732	wmpkc32.exe	90
PID 2732 wrote to memory of 3116	2732	wmpkc32.exe	90
PID 2732 wrote to memory of 3116	2732	wmpkc32.exe	90
PID 2732 wrote to memory of 3116	2732	wmpkc32.exe	90
PID 2732 wrote to memory of 3116	2732	wmpkc32.exe	90
PID 3116 wrote to memory of 3448	3116	wmpkc32.exe	56
PID 3116 wrote to memory of 3448	3116	wmpkc32.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3448
- C:\Users\Admin\AppData\Local\Temp\f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4384
- - C:\Users\Admin\AppData\Local\Temp\f305b41d1161f7c6a1972942e9231641_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f305b41d1161f7c6a1972942e9231641_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:1044
  - - C:\Windows\SysWOW64\wmpkc32.exe
      "C:\Windows\SysWOW64\wmpkc32.exe" C:\Users\Admin\AppData\Local\Temp\F305B4~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2732
    - - C:\Windows\SysWOW64\wmpkc32.exe
        
        "C:\Windows\SysWOW64\wmpkc32.exe" C:\Users\Admin\AppData\Local\Temp\F305B4~1.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:3116

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\wmpkc32.exe

Filesize
134KB

MD5
f305b41d1161f7c6a1972942e9231641

SHA1
fe22f8d6857b312294e409ed8a071d8a5c075f21

SHA256
453c338a42ecb62587c861b22cb93af69a07a5e20f0c70703141ba53f7e6e31c

SHA512
a6356f0b0262206602b65e3671f493cb58b5a802276040e9fac82a1c32e4cf6c8158cb51296486949cffad9f4834f56a3efb13fc9cbaf3db76310bdabfcc3758

Download Submit
memory/1044-0-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1044-2-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1044-4-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1044-3-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1044-35-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1044-41-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3116-45-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3116-46-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3116-47-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3116-48-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3116-49-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads