Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
21-03-2024 15:38
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
dbfd5e82fb8e1a60b840c6f1bfa9a940.dll
Resource
win7-20240221-en
3 signatures
150 seconds
General
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Target
dbfd5e82fb8e1a60b840c6f1bfa9a940.dll
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Size
563KB
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MD5
dbfd5e82fb8e1a60b840c6f1bfa9a940
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SHA1
e6b76c1cefcddee17265f9169f631afe2f1b271a
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SHA256
61ae9dc502932b1e066acc4ff238a3c05c31b0cbb67e7ae3fc0ed16c6e446677
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SHA512
b8970624bfb696cee541bbcebcb1e50e6f5305f76a4c1943288b4b1b4cbed134ab20a60e5dd9364f81661dd8222e97c91e70466da8ed4a14cf8ca4045564f830
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SSDEEP
12288:c0Et9YDc/Tk4Po4wSSqodPF9C2vTgYneNdKhBRR:ktWDcw4o4Ts/9Ckn8dKvR
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs 1 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{CC01FC6C-169A-A6FB-7F14-89A3D384A15B} regsvr32.exe -
Modifies registry class 11 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-169A-A6FB-7F14-89A3D384A15B} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\dbfd5e82fb8e1a60b840c6f1bfa9a940.sh regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-169A-A6FB-7F14-89A3D384A15B}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\dbfd5e82fb8e1a60b840c6f1bfa9a940.sh\Clsid regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\dbfd5e82fb8e1a60b840c6f1bfa9a940.sh\Clsid\ = "{CC01FC6C-169A-A6FB-7F14-89A3D384A15B}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-169A-A6FB-7F14-89A3D384A15B}\ProgID\ = "dbfd5e82fb8e1a60b840c6f1bfa9a940.sh" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-169A-A6FB-7F14-89A3D384A15B}\ = "sh" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-169A-A6FB-7F14-89A3D384A15B}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-169A-A6FB-7F14-89A3D384A15B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dbfd5e82fb8e1a60b840c6f1bfa9a940.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-169A-A6FB-7F14-89A3D384A15B}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\dbfd5e82fb8e1a60b840c6f1bfa9a940.sh\ = "sh" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4436 wrote to memory of 2320 4436 regsvr32.exe 90 PID 4436 wrote to memory of 2320 4436 regsvr32.exe 90 PID 4436 wrote to memory of 2320 4436 regsvr32.exe 90
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\dbfd5e82fb8e1a60b840c6f1bfa9a940.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4436 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\dbfd5e82fb8e1a60b840c6f1bfa9a940.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2320
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