Overview
overview
8Static
static
3GeeLark_x64_1.8.0.exe
windows10-1703-x64
8$PLUGINSDI...os.dll
windows10-1703-x64
3$PLUGINSDIR/nsDui.dll
windows10-1703-x64
3$PLUGINSDI...ss.dll
windows10-1703-x64
3DuiLib_d.dll
windows10-1703-x64
3DuiLib_u.dll
windows10-1703-x64
3DuiLib_ud.dll
windows10-1703-x64
3DuilibPreview.exe
windows10-1703-x64
3Analysis
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max time kernel
315s -
max time network
390s -
platform
windows10-1703_x64 -
resource
win10-20240611-en -
resource tags
arch:x64arch:x86image:win10-20240611-enlocale:en-usos:windows10-1703-x64system -
submitted
19-08-2024 18:11
Static task
static1
Behavioral task
behavioral1
Sample
GeeLark_x64_1.8.0.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
$PLUGINSDIR/ExecDos.dll
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/nsDui.dll
Resource
win10-20240611-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/nsProcess.dll
Resource
win10-20240404-en
Behavioral task
behavioral5
Sample
DuiLib_d.dll
Resource
win10-20240404-en
Behavioral task
behavioral6
Sample
DuiLib_u.dll
Resource
win10-20240404-en
Behavioral task
behavioral7
Sample
DuiLib_ud.dll
Resource
win10-20240404-en
Behavioral task
behavioral8
Sample
DuilibPreview.exe
Resource
win10-20240404-en
General
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Target
$PLUGINSDIR/nsDui.dll
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Size
618KB
-
MD5
436289131016b2648f2a342451a9c995
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SHA1
388caedb41e68469ad00eab8e62aa3b002663f86
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SHA256
1cb0cedde69de350d290c533d9c9a8b55f16840a852e6451ae0cad3b4d1f65e4
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SHA512
802d06b1984a55280a8e4acd336cc52a4b019592e9394fa4be4dd39118b8c8a9eb009cf3af23569e86d3886f5dc7b99685a5b23bab5c2d457f6f4fed31c75fe1
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SSDEEP
12288:gs39sE3to5A4pUN4ni9toSru6JGNpSBKad1vubD5OAf+l:5l3toB24iBu6JEpSsZ
Malware Config
Signatures
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Program crash 1 IoCs
pid pid_target Process procid_target 4452 3020 WerFault.exe 70 -
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.
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 1848 wrote to memory of 3020 1848 rundll32.exe 70 PID 1848 wrote to memory of 3020 1848 rundll32.exe 70 PID 1848 wrote to memory of 3020 1848 rundll32.exe 70
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsDui.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1848 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsDui.dll,#12⤵
- System Location Discovery: System Language Discovery
PID:3020 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3020 -s 6523⤵
- Program crash
PID:4452
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