Overview
overview
8Static
static
3avast_secu...up.exe
windows10-2004-x64
8avast_secu...up.exe
windows11-ltsc_2024-x64
7$PLUGINSDI...er.exe
windows10-2004-x64
3$PLUGINSDI...er.exe
windows11-ltsc_2024-x64
3$PLUGINSDI...up.exe
windows10-2004-x64
4$PLUGINSDI...up.exe
windows11-ltsc_2024-x64
4$PLUGINSDI...ui.dll
windows10-2004-x64
1$PLUGINSDI...ui.dll
windows11-ltsc_2024-x64
1Analysis
- max time kernel
149s - max time network
136s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
08/08/2026, 19:54
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
avast_secure_browser_setup.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
39 signatures
150 seconds
Behavioral task
behavioral2
Sample
avast_secure_browser_setup.exe
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
11 signatures
150 seconds
Behavioral task
behavioral3
Sample
$PLUGINSDIR/AvastBrowserInstaller.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
2 signatures
150 seconds
Behavioral task
behavioral4
Sample
$PLUGINSDIR/AvastBrowserInstaller.exe
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
2 signatures
150 seconds
Behavioral task
behavioral5
Sample
$PLUGINSDIR/AvastBrowserUpdateSetup.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
2 signatures
150 seconds
Behavioral task
behavioral6
Sample
$PLUGINSDIR/AvastBrowserUpdateSetup.exe
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
2 signatures
150 seconds
Behavioral task
behavioral7
Sample
$PLUGINSDIR/sciterui.dll
Resource
win10v2004-20260513-en
windows10-2004-x64
0 signatures
150 seconds
Behavioral task
behavioral8
Sample
$PLUGINSDIR/sciterui.dll
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
0 signatures
150 seconds
General
- Target $PLUGINSDIR/AvastBrowserUpdateSetup.exe
- Size 1.6MB
- Sample260808-ymrl4axzaz
- SHA256 2425183fa25e5a6e99d38a3a2f98ad74a51da09e3f33105bf88a1f363dfe9666
- MD5 518936ad220f261fb1c4be46c9e8f5bb
- SHA1 e9d16718e8a6f9c19a461b0079dcb92cd9e6374d
- SHA512 b05df7f397baa7e1fce6deec4c4eabd0cb59382a497ca6ac2dcfe89c6dce26ecca61ae3a0b6e14af1f4e3624f14a85febbcf66c9efdd7aad565023d75bca7e90
- SSDEEP 49152:kbGrGVjIj59OfWx2YtJ+qlnZfS9u4i8Jr6:OGrGVjW2/KBn5uu4X0
- TLSH T1917523027AE18171F6BB1D35667453F31A7AFD708D30996B2394382C2AB5CD19A34B3B
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
4/10
Malware Config
Signatures
- Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_en-GB.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_ru.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_zh-CN.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\AvastBrowserUpdateBroker.exe AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\AvastBrowserUpdateWebPlugin.exe AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\psmachine_64.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_fil.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_hr.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_iw.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_ml.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_pt-PT.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_cs.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_el.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_ja.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_pt-BR.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_th.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_da.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_et.dll AvastBrowserUpdateSetup.exe File opened for modification C:\Program Files (x86)\GUM54A3.tmp\AvastBrowserUpdateSetup.exe AvastBrowserUpdateSetup.exe File opened for modification C:\Program Files (x86)\GUT54B4.tmp AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\AvastBrowserUpdateComRegisterShell64.exe AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_id.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_ta.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_bg.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_fi.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_hi.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_hu.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_sr.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_sv.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\AvastBrowserCrashHandler64.exe AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_ko.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\AvastBrowserUpdateOnDemand.exe AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_gu.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_kn.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_nl.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_te.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\AvastBrowserUpdate.exe AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_pl.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_sk.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_bn.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_es-419.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_no.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_tr.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\AvastBrowserCrashHandler.exe AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\acuapi_64.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_it.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_ro.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\acuapi.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\psuser.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\AvastBrowserUpdateCore.exe AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_de.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_en.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_fr.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_lt.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_ms.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\AvastBrowserUpdateHelper.msi AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_am.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_ca.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_fa.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_is.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_uk.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\goopdateres_ur.dll AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\@PaxHeader AvastBrowserUpdateSetup.exe File created C:\Program Files (x86)\GUM54A3.tmp\npAvastBrowserUpdate3.dll AvastBrowserUpdateSetup.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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language AvastBrowserUpdateSetup.exe
Processes
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Program Files (x86)\GUM54A3.tmp\@PaxHeader
- Size 28B
- SHA256 032470eec8ad7b827a01b1ddc43766f2c00ef20749bb066a03a355804ad508e0
- MD5 b91416ecad9ef74d69cee470846bdb3f
- SHA1 8e3bcd2c16e04bf2ecc1b4209feb30a4a8cd606e
- SHA512 27795a3e91de8807373051cab69022b10403f05256fbf01a067da47be54ae49e043f4df4d467adf78f8086e0e5abcbf2eba83f61de5a78fcdde6d24222232a60
- MD5 SHA1 SHA512
- Path C:\Program Files (x86)\GUM54A3.tmp\@PaxHeader
- Size 28B
- SHA256 4b91a21461490022add83f4988fe8399ff25af2abb83a67fea3dab893e44ed43
- MD5 d3cf426e9f7c002b4b8a739658c1f244
- SHA1 c1caf67dec7a75cce1777a9d4d2bb7fc9d17d3b1
- SHA512 15c4d7570c0db903f5cc390cd0b58ff45a96a44f21e2e8f209b39db78b58b53acda974174bc411c5405018aaf89fef59488a96d18fb41506cc1900fe3131e5fb
- MD5 SHA1 SHA512
- Path C:\Program Files (x86)\GUM54A3.tmp\@PaxHeader
- Size 27B
- SHA256 ae1391cc72bf25beedd4368181b04ece108a6929344d5be4714cf4f2489c7b8d
- MD5 582374f661f46d30df1bd506fbe984d7
- SHA1 a9430a00947d2144686c17b401f48758240168b1
- SHA512 df356e14b8ca3303c961c0d94277d1412f504832705e5d1c1d962d94a246d2516ad4cb3b940a82b6ccab9c25521b2710d8cea6171332d36953d020d6cfb16158
- MD5 SHA1 SHA512
- Path C:\Program Files (x86)\GUM54A3.tmp\@PaxHeader
- Size 28B
- SHA256 d152c20d345a1101cc7a0dad38e90afab3abe87459edab1b518f52eaff8b7149
- MD5 eb5725a5c6ab7d1466f67333de602a28
- SHA1 c50a69310a3a42b3f9a28a0187a6f1fe2972fbec
- SHA512 7b838061735dcb5c13789deee504f5203a7d8ee679cb7d41f2d03126ef375e7cfe95bc6d8ef8438867478d00e2106e6ded4830829741282d8924175dd12eef10
- MD5 SHA1 SHA512
- Path C:\Program Files (x86)\GUM54A3.tmp\@PaxHeader
- Size 28B
- SHA256 2e4062aab4b6e5240ac33034f05b00649942555047e019ccaf013ed7f6a1b651
- MD5 d073c01e3115ab4ba809feeb1e08ab14
- SHA1 ae02fe98a70037ef814b12997b9035802c22d38f
- SHA512 ad3b6d8b4ed38c7f70cf9f12d1cd5c8a7338740b3c26fd70292a6a7bc8a499f37b122a288098f0e3f9ddd3a47567bbeffd814f94dce7bb94b4ace898793b599a
- MD5 SHA1 SHA512