Overview
overview
7Static
static
3plexo-1.0....up.exe
windows11-21h2-x64
7$PLUGINSDI...ls.dll
windows11-21h2-x64
3$PLUGINSDI...em.dll
windows11-21h2-x64
3$PLUGINSDIR/UAC.dll
windows11-21h2-x64
3$PLUGINSDI...ll.dll
windows11-21h2-x64
3plexo.exe
windows11-21h2-x64
7resources/...il.dll
windows11-21h2-x64
1resources/...ack.js
windows11-21h2-x64
3resources/...dex.js
windows11-21h2-x64
3resources/...l.node
windows11-21h2-x64
3resources/...il.dll
windows11-21h2-x64
3resources/...il.dll
windows11-21h2-x64
1resources/...ing.js
windows11-21h2-x64
3resources/...dex.js
windows11-21h2-x64
3resources/...s.bare
windows11-21h2-x64
3resources/...s.node
windows11-21h2-x64
3resources/...s.bare
windows11-21h2-x64
3resources/...s.node
windows11-21h2-x64
3resources/...s.bare
windows11-21h2-x64
3resources/...s.node
windows11-21h2-x64
3resources/...s.bare
windows11-21h2-x64
3resources/...s.node
windows11-21h2-x64
3resources/...i.node
windows11-21h2-x64
3resources/...i.node
windows11-21h2-x64
3resources/...fi.dll
windows11-21h2-x64
1resources/...dex.js
windows11-21h2-x64
3resources/...ect.js
windows11-21h2-x64
3resources/...gen.py
windows11-21h2-x64
3$PLUGINSDI...gs.dll
windows11-21h2-x64
3$PLUGINSDI...ec.dll
windows11-21h2-x64
3$PLUGINSDI...7z.dll
windows11-21h2-x64
3$R0/Uninst...xo.exe
windows11-21h2-x64
7Analysis
- max time kernel
149s - platform
windows11-21h2_x64 - resource
win11-20260911-en - resource tags
arch:x64arch:x86image:win11-20260911-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
30/10/2026, 08:45
Static task
static1
Behavioral task
behavioral1
Sample
plexo-1.0.0-rc.15-setup.exe
Resource
win11-20260911-en
Behavioral task
behavioral2
Sample
$PLUGINSDIR/StdUtils.dll
Resource
win11-20260911-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win11-20260911-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/UAC.dll
Resource
win11-20260911-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/WinShell.dll
Resource
win11-20260911-en
Behavioral task
behavioral6
Sample
plexo.exe
Resource
win11-20260911-en
Behavioral task
behavioral7
Sample
resources/app.asar.unpacked/node_modules/bufferutil/build/Release/bufferutil.dll
Resource
win11-20260911-en
Behavioral task
behavioral8
Sample
resources/app.asar.unpacked/node_modules/bufferutil/fallback.js
Resource
win11-20260911-en
Behavioral task
behavioral9
Sample
resources/app.asar.unpacked/node_modules/bufferutil/index.js
Resource
win11-20260911-en
Behavioral task
behavioral10
Sample
resources/app.asar.unpacked/node_modules/bufferutil/prebuilds/linux-x64/bufferutil.node
Resource
win11-20260911-en
Behavioral task
behavioral11
Sample
resources/app.asar.unpacked/node_modules/bufferutil/prebuilds/win32-ia32/bufferutil.dll
Resource
win11-20260911-en
Behavioral task
behavioral12
Sample
resources/app.asar.unpacked/node_modules/bufferutil/prebuilds/win32-x64/bufferutil.dll
Resource
win11-20260911-en
Behavioral task
behavioral13
Sample
resources/app.asar.unpacked/node_modules/fs-native-extensions/binding.js
Resource
win11-20260911-en
Behavioral task
behavioral14
Sample
resources/app.asar.unpacked/node_modules/fs-native-extensions/index.js
Resource
win11-20260911-en
Behavioral task
behavioral15
Sample
resources/app.asar.unpacked/node_modules/fs-native-extensions/prebuilds/android-arm/fs-native-extensions.bare
Resource
win11-20260911-en
Behavioral task
behavioral16
Sample
resources/app.asar.unpacked/node_modules/fs-native-extensions/prebuilds/android-arm/fs-native-extensions.node
Resource
win11-20260911-en
Behavioral task
behavioral17
Sample
resources/app.asar.unpacked/node_modules/fs-native-extensions/prebuilds/android-arm64/fs-native-extensions.bare
Resource
win11-20260911-en
Behavioral task
behavioral18
Sample
resources/app.asar.unpacked/node_modules/fs-native-extensions/prebuilds/android-arm64/fs-native-extensions.node
Resource
win11-20260911-en
Behavioral task
behavioral19
Sample
resources/app.asar.unpacked/node_modules/fs-native-extensions/prebuilds/android-ia32/fs-native-extensions.bare
Resource
win11-20260911-en
Behavioral task
behavioral20
Sample
resources/app.asar.unpacked/node_modules/fs-native-extensions/prebuilds/android-ia32/fs-native-extensions.node
Resource
win11-20260911-en
Behavioral task
behavioral21
Sample
resources/app.asar.unpacked/node_modules/fs-native-extensions/prebuilds/android-x64/fs-native-extensions.bare
Resource
win11-20260911-en
Behavioral task
behavioral22
Sample
resources/app.asar.unpacked/node_modules/fs-native-extensions/prebuilds/android-x64/fs-native-extensions.node
Resource
win11-20260911-en
Behavioral task
behavioral23
Sample
resources/app.asar.unpacked/node_modules/koffi/build/koffi/linux_arm64/koffi.node
Resource
win11-20260911-en
Behavioral task
behavioral24
Sample
resources/app.asar.unpacked/node_modules/koffi/build/koffi/linux_x64/koffi.node
Resource
win11-20260911-en
Behavioral task
behavioral25
Sample
resources/app.asar.unpacked/node_modules/koffi/build/koffi/win32_x64/koffi.dll
Resource
win11-20260911-en
Behavioral task
behavioral26
Sample
resources/app.asar.unpacked/node_modules/koffi/index.js
Resource
win11-20260911-en
Behavioral task
behavioral27
Sample
resources/app.asar.unpacked/node_modules/koffi/indirect.js
Resource
win11-20260911-en
Behavioral task
behavioral28
Sample
resources/app.asar.unpacked/node_modules/koffi/lib/native/base/crc_gen.py
Resource
win11-20260911-en
Behavioral task
behavioral29
Sample
$PLUGINSDIR/nsDialogs.dll
Resource
win11-20260911-en
Behavioral task
behavioral30
Sample
$PLUGINSDIR/nsExec.dll
Resource
win11-20260911-en
Behavioral task
behavioral31
Sample
$PLUGINSDIR/nsis7z.dll
Resource
win11-20260911-en
Behavioral task
behavioral32
Sample
$R0/Uninstall plexo.exe
Resource
win11-20260911-en
General
- Target $PLUGINSDIR/StdUtils.dll
- Size 100KB
- Sample261030-knw2baxy7p
- SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
- MD5 c6a6e03f77c313b267498515488c5740
- SHA1 3d49fc2784b9450962ed6b82b46e9c3c957d7c15
- SHA512 9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803
- SSDEEP 3072:WNuZmJ9TDP3ahD2TF7Rq9cJNPhF9vyHf:WNuZ81zaAFHhF9v
- TLSH T125A33B62A2FA9CF5E4E70B3D1469BB264CBB7B383431D93F2342054B8534586DA2D35B
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Program crash 1 IoCs
pid pid_target Process procid_target 708 872 WerFault.exe 79 - 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 1 IoCs
description pid Process procid_target PID 4020 wrote to memory of 872 4020 rundll32.exe 79
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\StdUtils.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4020 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\StdUtils.dll,#12⤵
- System Location Discovery: System Language Discovery
PID:872 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 5363⤵
- Program crash
PID:708
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 872 -ip 8721⤵PID:2212