Overview
overview
9Static
static
9Decache Ex...7z.dll
windows10-2004-x64
3Decache Ex...7z.dll
windows11-21h2-x64
3Decache Ex...7z.exe
windows10-2004-x64
3Decache Ex...7z.exe
windows11-21h2-x64
3Decache Ex...7z.exe
windows10-2004-x64
1Decache Ex...7z.exe
windows11-21h2-x64
1Decache Ex...ux.sfx
ubuntu-18.04-amd64
3Decache Ex...on.exe
windows10-2004-x64
1Decache Ex...on.exe
windows11-21h2-x64
1Decache Ex...32.dll
windows10-2004-x64
3Decache Ex...32.dll
windows11-21h2-x64
3Decache Ex...on.dll
windows10-2004-x64
3Decache Ex...on.dll
windows11-21h2-x64
3Decache Ex...ec.dll
windows10-2004-x64
3Decache Ex...ec.dll
windows11-21h2-x64
3Decache Ex...nc.dll
windows10-2004-x64
3Decache Ex...nc.dll
windows11-21h2-x64
3Decache Ex...ts.bat
windows10-2004-x64
1Decache Ex...ts.bat
windows11-21h2-x64
1Decache Ex...ze.bat
windows10-2004-x64
1Decache Ex...ze.bat
windows11-21h2-x64
1Decache Ex...rl.exe
windows10-2004-x64
1Decache Ex...rl.exe
windows11-21h2-x64
1Decache Ex...dd.exe
windows10-2004-x64
3Decache Ex...dd.exe
windows11-21h2-x64
3Decache Ex...eg.exe
windows10-2004-x64
3Decache Ex...eg.exe
windows11-21h2-x64
3Decache Ex...ew.exe
windows10-2004-x64
7Decache Ex...ew.exe
windows11-21h2-x64
7Decache Ex...ew.exe
windows10-2004-x64
9Decache Ex...ew.exe
windows11-21h2-x64
9Decache Ex...ew.exe
windows10-2004-x64
9Analysis
- max time kernel
149s - max time network
161s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
02/06/2026, 03:58
Behavioral task
behavioral1
Sample
Decache Exporter/bin/7z/7z.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
Decache Exporter/bin/7z/7z.dll
Resource
win11-20260513-en
Behavioral task
behavioral3
Sample
Decache Exporter/bin/7z/7z.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
Decache Exporter/bin/7z/7z.exe
Resource
win11-20260513-en
Behavioral task
behavioral5
Sample
Decache Exporter/bin/7z/7z.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral6
Sample
Decache Exporter/bin/7z/7z.exe
Resource
win11-20260513-en
Behavioral task
behavioral7
Sample
Decache Exporter/bin/7z/7zCon.linux.sfx
Resource
ubuntu1804-amd64-20260513-en
Behavioral task
behavioral8
Sample
Decache Exporter/bin/7z/7zCon.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral9
Sample
Decache Exporter/bin/7z/7zCon.exe
Resource
win11-20260513-en
Behavioral task
behavioral10
Sample
Decache Exporter/bin/7z/Codecs/Modern7z.32.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral11
Sample
Decache Exporter/bin/7z/Codecs/Modern7z.32.dll
Resource
win11-20260513-en
Behavioral task
behavioral12
Sample
Decache Exporter/bin/7z/Codecs/brotli/libbrotlicommon.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral13
Sample
Decache Exporter/bin/7z/Codecs/brotli/libbrotlicommon.dll
Resource
win11-20260513-en
Behavioral task
behavioral14
Sample
Decache Exporter/bin/7z/Codecs/brotli/libbrotlidec.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral15
Sample
Decache Exporter/bin/7z/Codecs/brotli/libbrotlidec.dll
Resource
win11-20260513-en
Behavioral task
behavioral16
Sample
Decache Exporter/bin/7z/Codecs/brotli/libbrotlienc.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral17
Sample
Decache Exporter/bin/7z/Codecs/brotli/libbrotlienc.dll
Resource
win11-20260513-en
Behavioral task
behavioral18
Sample
Decache Exporter/bin/check_dir_exists.bat
Resource
win10v2004-20260513-en
Behavioral task
behavioral19
Sample
Decache Exporter/bin/check_dir_exists.bat
Resource
win11-20260513-en
Behavioral task
behavioral20
Sample
Decache Exporter/bin/check_size.bat
Resource
win10v2004-20260513-en
Behavioral task
behavioral21
Sample
Decache Exporter/bin/check_size.bat
Resource
win11-20260513-en
Behavioral task
behavioral22
Sample
Decache Exporter/bin/curl.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral23
Sample
Decache Exporter/bin/curl.exe
Resource
win11-20260513-en
Behavioral task
behavioral24
Sample
Decache Exporter/bin/dd.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral25
Sample
Decache Exporter/bin/dd.exe
Resource
win11-20260513-en
Behavioral task
behavioral26
Sample
Decache Exporter/bin/ffmpeg.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral27
Sample
Decache Exporter/bin/ffmpeg.exe
Resource
win11-20260513-en
Behavioral task
behavioral28
Sample
Decache Exporter/bin/history/BrowsingHistoryView.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral29
Sample
Decache Exporter/bin/history/BrowsingHistoryView.exe
Resource
win11-20260513-en
Behavioral task
behavioral30
Sample
Decache Exporter/bin/history/ChromeHistoryView.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral31
Sample
Decache Exporter/bin/history/ChromeHistoryView.exe
Resource
win11-20260513-en
General
- Target Decache Exporter/bin/7z/Codecs/brotli/libbrotlicommon.dll
- Size 132KB
- Sample260602-ejmn7adv4v
- SHA256 98ed8968fdf0b0f49dcf0438bd02097f62bbf17c3a197984f2fe938ab48fcefe
- MD5 04176598b71ed83e15612cb407b3d0df
- SHA1 07b92f98db283466e4856f554a46001f7103f199
- SHA512 bab6e54b95b29fdaac33fb3731f0bd1906445c7e4d11afe228781f780a6798fc51bc072d09927367074846a8e0ddb3ec43735515b22434b0aed1b563de8c30ed
- SSDEEP 3072:cc4lzbWhNbNL8DXGvVh73pbi0tdpvGJaoZB7PxBG:V4AhdNorGvHdbi09GJ
- TLSH T16AD37CA1B3050736C25B227AE49A6BB9F33581B597670520F4A9466D20C3CA4933F7FF
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- 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 4692 wrote to memory of 3972 4692 rundll32.exe 80
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\Decache Exporter\bin\7z\Codecs\brotli\libbrotlicommon.dll",#11⤵
- Suspicious use of WriteProcessMemory
PID:4692 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\Decache Exporter\bin\7z\Codecs\brotli\libbrotlicommon.dll",#12⤵
- System Location Discovery: System Language Discovery
PID:3972
-