bb37fe0da432c3e8ec024ad842d43969a0bd463d9dbf3ad2c23edc337317be26

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30/09/2024, 15:52

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General

Target

022261a28a1cd6c23b85988067bb87c8_JaffaCakes118.dll
Size

237KB
MD5

022261a28a1cd6c23b85988067bb87c8
SHA1

f7f84e42a76685a64c2a1a87538963b7dc16b71c
SHA256

bb37fe0da432c3e8ec024ad842d43969a0bd463d9dbf3ad2c23edc337317be26
SHA512

16741ffa677bef8a3be3407ed2435db060a6dedcf00a36c25fbc06d1c037d26c075bbcc7bdf60514327a0e42878f7b5a221674d86314a33e6dbd4f9fae977cf4
SSDEEP

1536:cD4b+SfPGwwPzNb6Z++AB5oUwK9qfTfxRlKLHFKwchgH4No7cLgkKwe5klYfG8Go:cDmPWwWP+OmYwRlKhPcp67xws6iwkhX

Score

10^/10

discovery persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\gkcmcrzxs = "{84e66117-0c6e-51b3-1d7f-0c6ee99f4b2b}"	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1228	rundll32.exe
1228	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\txpzpemkf.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\txpzpemkf.dll	rundll32.exe
File created	C:\Windows\SysWOW64\fjblbqywr.dll	rundll32.exe
File created	C:\Windows\SysWOW64\bfxhxmusn.dll	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{84e66117-0c6e-51b3-1d7f-0c6ee99f4b2b}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{84e66117-0c6e-51b3-1d7f-0c6ee99f4b2b}\InprocServer32\ = "C:\\Windows\\SysWow64\\bfxhxmusn.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{84e66117-0c6e-51b3-1d7f-0c6ee99f4b2b}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{84e66117-0c6e-51b3-1d7f-0c6ee99f4b2b}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{84e66117-0c6e-51b3-1d7f-0c6ee99f4b2b}\	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1228	rundll32.exe
1228	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1228	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1228	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3116 wrote to memory of 1228	3116	rundll32.exe	82
PID 3116 wrote to memory of 1228	3116	rundll32.exe	82
PID 3116 wrote to memory of 1228	3116	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\022261a28a1cd6c23b85988067bb87c8_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3116
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\022261a28a1cd6c23b85988067bb87c8_JaffaCakes118.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\fjblbqywr.dll

Filesize
625KB

MD5
eccf28d7e5ccec24119b88edd160f8f4

SHA1
98509587a3d37a20b56b50fd57f823a1691a034c

SHA256
820c83c0533cfce2928e29edeaf6c255bc19ac9718b25a5656d99ffac30a03d6

SHA512
c1c94bbb781625b2317f0a8178d3a10d891fb71bca8f82cd831c484e8ab125301b82a14fe2ff070dc99a496cc00234300fa5536401018c40d49d44ae89409670

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

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/1228-0-0x0000000000401000-0x0000000000409000-memory.dmp

Filesize
32KB

Download
memory/1228-7-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/1228-13-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/1228-14-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/1228-16-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download