6b6db4fcff66eeff22d5bf5d1449998a52bf4f55953791cd163099442c53791f

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
26-08-2024 08:13

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General

Target

c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe
Size

123KB
MD5

c29b84b8d4e168fce2c4b91e50dbe904
SHA1

2d8040674ca41c2df9da4fcaf001ad6be54d0245
SHA256

6b6db4fcff66eeff22d5bf5d1449998a52bf4f55953791cd163099442c53791f
SHA512

508510e6f51884436342c16f017f2a19dd8fc31b2615ab86c87410d9aa963e1eb161345772edb5048e2bff6f36cad6214ce293652308e2ac21d07026ced15ac4
SSDEEP

3072:Isn+QRLYC0cmKN6eXnpZSc3nxeTHZxqw7e0FWaLYOhlh:InQKC0cmKLn3naZxa0Qajd

Score

10^/10

adware discovery persistence stealer upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,C:\\Program Files (x86)\\Internet Explorer\\c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe"	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0008000000017462-5.dat	acprotect

Deletes itself 1 IoCs

pid	Process
2576	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2796	Regsvr32.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0008000000017462-5.dat	upx
behavioral1/memory/2796-7-0x0000000010000000-0x0000000010031000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{EF4A79B4-070E-4645-B732-8A4935D18A88}	Regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{EF4A79B4-070E-4645-B732-8A4935D18A88}\NoExplorer = "1"	Regsvr32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\wybho.dll	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Internet Explorer\c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe

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 3 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	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 46 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool\ = "wybhotool Class"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}\ = "wybhotool Class"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}\VersionIndependentProgID\ = "WYBHO.wybhotool"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\ProxyStubClsid32	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool.1	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}\ProgID\ = "WYBHO.wybhotool.1"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}\Programmable	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}\TypeLib	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC2233}\1.0\FLAGS	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\ = "Iwybhotool"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}\InprocServer32\ = "C:\\Windows\\SysWow64\\wybho.dll"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\TypeLib	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\ = "Iwybhotool"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\TypeLib\ = "{A13FA9A7-4644-4233-8192-891801DC2233}"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool\CurVer	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC2233}\1.0\FLAGS\ = "0"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC2233}\1.0\0	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC2233}\1.0\ = "WYBHO 1.0 Type Library"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool\CLSID	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool\CLSID\ = "{EF4A79B4-070E-4645-B732-8A4935D18A88}"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}\ProgID	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}\InprocServer32\ThreadingModel = "Apartment"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}\TypeLib\ = "{A13FA9A7-4644-4233-8192-891801DC2233}"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\TypeLib	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool.1\ = "wybhotool Class"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool.1\CLSID\ = "{EF4A79B4-070E-4645-B732-8A4935D18A88}"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC2233}	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool.1\CLSID	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC2233}\1.0\0\win32	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC2233}\1.0\HELPDIR\ = "C:\\Windows\\system32"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\TypeLib\ = "{A13FA9A7-4644-4233-8192-891801DC2233}"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\TypeLib\Version = "1.0"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\ProxyStubClsid32	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}\InprocServer32	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0929707A3}\TypeLib\Version = "1.0"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF4A79B4-070E-4645-B732-8A4935D18A88}\VersionIndependentProgID	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC2233}\1.0	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC2233}\1.0\0\win32\ = "C:\\Windows\\SysWow64\\wybho.dll"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC2233}\1.0\HELPDIR	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool\CurVer\ = "WYBHO.wybhotool.1"	Regsvr32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 2796	2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	31
PID 2696 wrote to memory of 2796	2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	31
PID 2696 wrote to memory of 2796	2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	31
PID 2696 wrote to memory of 2796	2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	31
PID 2696 wrote to memory of 2796	2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	31
PID 2696 wrote to memory of 2796	2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	31
PID 2696 wrote to memory of 2796	2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	31
PID 2696 wrote to memory of 2576	2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	33
PID 2696 wrote to memory of 2576	2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	33
PID 2696 wrote to memory of 2576	2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	33
PID 2696 wrote to memory of 2576	2696	c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c29b84b8d4e168fce2c4b91e50dbe904_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2696
- C:\Windows\SysWOW64\Regsvr32.exe
  Regsvr32.exe /s "C:\Windows\system32\wybho.dll"
  2⤵
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2796
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\123.bat" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Browser Extensions

T1176

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\123.bat

Filesize
282B

MD5
834a9c0aba698e67df550e99cb8d8ab4

SHA1
b2fc91beee5ba53e5d8f18232d08d2d016693868

SHA256
2fee109436b3bf8f18b445571143f1ea93aee3800483477979f43fbdb9b2e260

SHA512
b1ad300c3d89219e205cdc630296d9f6296360e3807f1ad659353dc3b671ca2a680671c10a9a5d94ac544bf054e7537e90dd9b5e35212814eb75c2243ab8b777

Download Submit
C:\Windows\SysWOW64\wybho.dll

Filesize
71KB

MD5
2307e747469f9460cfd64b5fb08a204f

SHA1
85eee8143e00912ebd272000c5f6736f6b0613d6

SHA256
2b61b8630dc85b8cb39d1b6eeac28b8ec480854c7013d7499af42b845d69734e

SHA512
91ac56ed1578be05636b3c4b35336e201a69e6c831b99c8350dd987147ab533461a8841966fc8178871417f9767ba27d231a50115ba06ad6b30d1deb6ebe65c4

Download Submit
memory/2696-0-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2796-7-0x0000000010000000-0x0000000010031000-memory.dmp

Filesize
196KB

Download