Overview
overview
8Static
static
7workwinScr...��.doc
windows7-x64
4workwinScr...��.doc
windows10-2004-x64
1workwinScr...60.dll
windows7-x64
1workwinScr...60.dll
windows10-2004-x64
1workwinScr...up.exe
windows7-x64
4workwinScr...up.exe
windows10-2004-x64
4workwinScr...hs.dll
windows7-x64
1workwinScr...hs.dll
windows10-2004-x64
1workwinScr...tv.exe
windows7-x64
8workwinScr...tv.exe
windows10-2004-x64
8workwinScr...rk.dll
windows7-x64
1workwinScr...rk.dll
windows10-2004-x64
1workwinScr...up.exe
windows7-x64
1workwinScr...up.exe
windows10-2004-x64
1workwinScr...tv.exe
windows7-x64
8workwinScr...tv.exe
windows10-2004-x64
8workwinScr...rk.dll
windows7-x64
1workwinScr...rk.dll
windows10-2004-x64
1workwinScr...tv.exe
windows7-x64
8workwinScr...tv.exe
windows10-2004-x64
8workwinScr...rk.dll
windows7-x64
1workwinScr...rk.dll
windows10-2004-x64
1workwinScr...TL.dll
windows7-x64
1workwinScr...TL.dll
windows10-2004-x64
1workwinScr...CK.dll
windows7-x64
1workwinScr...CK.dll
windows10-2004-x64
1workwinScr...er.exe
windows7-x64
1workwinScr...er.exe
windows10-2004-x64
8workwinScr...le.dll
windows7-x64
1workwinScr...le.dll
windows10-2004-x64
1workwinScr...��.exe
windows7-x64
1workwinScr...��.exe
windows10-2004-x64
1Analysis
-
max time kernel
148s -
max time network
169s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
11-03-2024 01:56
Behavioral task
behavioral1
Sample
workwinScreen/WorkWinǽƤ.doc
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
workwinScreen/WorkWinǽƤ.doc
Resource
win10v2004-20240226-en
Behavioral task
behavioral3
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/Msvbvm60.dll
Resource
win7-20240215-en
Behavioral task
behavioral4
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/Msvbvm60.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral5
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/Setup.exe
Resource
win7-20240221-en
Behavioral task
behavioral6
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/Setup.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral7
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/Vb6chs.dll
Resource
win7-20240221-en
Behavioral task
behavioral8
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/Vb6chs.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral9
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/WorkWintv.exe
Resource
win7-20240221-en
Behavioral task
behavioral10
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/WorkWintv.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral11
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/wintvwork.dll
Resource
win7-20240221-en
Behavioral task
behavioral12
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/wintvwork.dll
Resource
win10v2004-20231215-en
Behavioral task
behavioral13
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/Setup.exe
Resource
win7-20240220-en
Behavioral task
behavioral14
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/Setup.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral15
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/WorkWintv.exe
Resource
win7-20240221-en
Behavioral task
behavioral16
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/WorkWintv.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral17
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/wintvwork.dll
Resource
win7-20240221-en
Behavioral task
behavioral18
Sample
workwinScreen/Ӷ(Ա)/Ϊװ/wintvwork.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral19
Sample
workwinScreen/Ӷ(Ա)/ⰲװɫ/WorkWintv.exe
Resource
win7-20240221-en
Behavioral task
behavioral20
Sample
workwinScreen/Ӷ(Ա)/ⰲװɫ/WorkWintv.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral21
Sample
workwinScreen/Ӷ(Ա)/ⰲװɫ/wintvwork.dll
Resource
win7-20240221-en
Behavioral task
behavioral22
Sample
workwinScreen/Ӷ(Ա)/ⰲװɫ/wintvwork.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral23
Sample
workwinScreen//MSCOMCTL.dll
Resource
win7-20240220-en
Behavioral task
behavioral24
Sample
workwinScreen//MSCOMCTL.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral25
Sample
workwinScreen//MSWINSCK.dll
Resource
win7-20231129-en
Behavioral task
behavioral26
Sample
workwinScreen//MSWINSCK.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral27
Sample
workwinScreen//WorkWinTvServer.exe
Resource
win7-20240221-en
Behavioral task
behavioral28
Sample
workwinScreen//WorkWinTvServer.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral29
Sample
workwinScreen//eaagle.dll
Resource
win7-20240221-en
Behavioral task
behavioral30
Sample
workwinScreen//eaagle.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral31
Sample
workwinScreen//бʧܵ.exe
Resource
win7-20240221-en
Behavioral task
behavioral32
Sample
workwinScreen//бʧܵ.exe
Resource
win10v2004-20240226-en
General
-
Target
workwinScreen/Ӷ(Ա)/Ϊװ/Msvbvm60.dll
-
Size
1.3MB
-
MD5
351bc7471a9874acacf7d386fa8be227
-
SHA1
ce82d1ccf593088d09694ef90e44c4ea2761be92
-
SHA256
20cbf8835f6fd3878acacbb7868f7b95a7aae6c2c9d5d0a926337ed31378fa7a
-
SHA512
650efe6986a8e4dadd5fe8f95812052e047421c728fb61eafaa4512b12a41bab074171a9e7ab56d37c34fe284491d5cd4d60931a004d40115ced80c4cb56bbc5
-
SSDEEP
24576:u5gYLuvjckzS11wIJYbvsv9NZHa2kaV7UhH+CJ+oo8lsVhpRZpyi8F3qp/:uOQuvxzS11FjNkaV7UQCJ+oo8SVYFa/
Malware Config
Signatures
-
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D5DE8D20-5BB8-11D1-A1E3-00A0C90F2731} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D5DE8D20-5BB8-11D1-A1E3-00A0C90F2731}\ = "VBPropertyBag" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D5DE8D20-5BB8-11D1-A1E3-00A0C90F2731}\InProcServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D5DE8D20-5BB8-11D1-A1E3-00A0C90F2731}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\workwinScreen\\???????(?????)\\????????\\Msvbvm60.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D5DE8D20-5BB8-11D1-A1E3-00A0C90F2731}\InProcServer32\ThreadingModel = "Apartment" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1696 wrote to memory of 4724 1696 regsvr32.exe 95 PID 1696 wrote to memory of 4724 1696 regsvr32.exe 95 PID 1696 wrote to memory of 4724 1696 regsvr32.exe 95
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\workwinScreen\Ӷ(Ա)\Ϊװ\Msvbvm60.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1696 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\workwinScreen\Ӷ(Ա)\Ϊװ\Msvbvm60.dll2⤵
- Modifies registry class
PID:4724
-
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1032 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:81⤵PID:224