b92e1ee2bfeb614cbc96df222bd9dd085ce48185e350b5fd6d85d681897ff454

Analysis

max time kernel
93s
max time network
139s
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, 09:24

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General

Target

$PLUGINSDIR/nsisdll.dll
Size

276KB
MD5

478982dffa90b951e07fb411ca5d97f9
SHA1

3cb96be75f6d8a7ac9bd53fe0b176ca74823091f
SHA256

54291864b272f0621dad26eb2c6987a41f32ef02e2e8049c4e8294905a41ffd6
SHA512

e95ee9b65879fd0285dba387e9fc7333ac760f01c1c8632d0648e4d97f6a0366e5df611ed4660d2bb38712396c61f416a01605f723eb6df5bfc9e657ed4b9521
SSDEEP

6144:RgOel/FsKFSrTrjo3+EZtyILwO3R2g+ZBijQwnw6kgtgvOenREq2CTdbYvbM4oo1:RgOel/FdFSrTvo3+EZtyILwO3Rl+ZBiv

Score

5^/10

discovery

Malware Config

Signatures

Drops file in System32 directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\dll\shell32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\cfgmgr32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\wkernelbase.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\setupapi.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\DLL\AcLayers.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\shlwapi.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\combase.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\wkernel32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\DLL\wkernel32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\DLL\wkernel32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\mpr.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\advapi32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\oleaut32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\combase.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\setupapi.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\exe\rundll32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\DLL\wimm32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\sechost.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\msctf.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\wkernelbase.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\apphelp.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\bcryptprimitives.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\cfgmgr32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\winspool.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\msvcp_win.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\wntdll.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\wkernelbase.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\msvcrt.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\wwin32u.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\imagehlp.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\sechost.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\wgdi32full.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\cfgmgr32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\bcrypt.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\sfc.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\shcore.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\apphelp.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\msvcrt.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\msvcrt.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\wUxTheme.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\advapi32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\wUxTheme.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\wgdi32full.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\sfc_os.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\wwin32u.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\shell32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\shlwapi.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\wgdi32full.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\wuser32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\wgdi32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\DLL\sfc_os.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\shcore.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\nsisdll.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\msctf.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\apphelp.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\wrpcrt4.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\wimm32.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\imagehlp.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\wntdll.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\combase.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\wwin32u.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\dll\bcryptprimitives.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\symbols\dll\msvcp_win.pdb	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\shell32.pdb	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

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3512 wrote to memory of 1676	3512	rundll32.exe	84
PID 3512 wrote to memory of 1676	3512	rundll32.exe	84
PID 3512 wrote to memory of 1676	3512	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsisdll.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3512
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsisdll.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  PID:1676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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