Overview
overview
8Static
static
39f9b912f46...51.exe
windows7-x64
39f9b912f46...51.exe
windows10-2004-x64
3$PLUGINSDI...ns.dll
windows7-x64
3$PLUGINSDI...ns.dll
windows10-2004-x64
3SogouSoftware.exe
windows7-x64
1SogouSoftware.exe
windows10-2004-x64
1SogouSoftw...er.dll
windows7-x64
8SogouSoftw...er.dll
windows10-2004-x64
8crash/.svn...rt.exe
windows7-x64
1crash/.svn...rt.exe
windows10-2004-x64
1crash/Exce...rt.exe
windows7-x64
1crash/Exce...rt.exe
windows10-2004-x64
1download/d...Fw.exe
windows7-x64
1download/d...Fw.exe
windows10-2004-x64
1download/d...71.dll
windows7-x64
1download/d...71.dll
windows10-2004-x64
1download/d...71.dll
windows7-x64
3download/d...71.dll
windows10-2004-x64
3download/d...b1.dll
windows7-x64
1download/d...b1.dll
windows10-2004-x64
1download/d...Fw.exe
windows7-x64
3download/d...Fw.exe
windows10-2004-x64
7download/d...71.dll
windows7-x64
3download/d...71.dll
windows10-2004-x64
3download/d...71.dll
windows7-x64
3download/d...71.dll
windows10-2004-x64
3download/d...b1.dll
windows7-x64
3download/d...b1.dll
windows10-2004-x64
3download/xldl.dll
windows7-x64
3download/xldl.dll
windows10-2004-x64
3Analysis
-
max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
04-06-2024 00:54
Static task
static1
Behavioral task
behavioral1
Sample
9f9b912f4685dfda0e8369d5562952c7783d78acccf4dba63a0061ac6df01a51.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
9f9b912f4685dfda0e8369d5562952c7783d78acccf4dba63a0061ac6df01a51.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win7-20240221-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win10v2004-20240508-en
Behavioral task
behavioral5
Sample
SogouSoftware.exe
Resource
win7-20240215-en
Behavioral task
behavioral6
Sample
SogouSoftware.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral7
Sample
SogouSoftwareLoader.dll
Resource
win7-20240508-en
Behavioral task
behavioral8
Sample
SogouSoftwareLoader.dll
Resource
win10v2004-20240508-en
Behavioral task
behavioral9
Sample
crash/.svn/text-base/ExceptionReport.exe
Resource
win7-20240215-en
Behavioral task
behavioral10
Sample
crash/.svn/text-base/ExceptionReport.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral11
Sample
crash/ExceptionReport.exe
Resource
win7-20231129-en
Behavioral task
behavioral12
Sample
crash/ExceptionReport.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral13
Sample
download/download/.svn/text-base/MiniTPFw.exe
Resource
win7-20240221-en
Behavioral task
behavioral14
Sample
download/download/.svn/text-base/MiniTPFw.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral15
Sample
download/download/.svn/text-base/msvcp71.dll
Resource
win7-20240221-en
Behavioral task
behavioral16
Sample
download/download/.svn/text-base/msvcp71.dll
Resource
win10v2004-20240508-en
Behavioral task
behavioral17
Sample
download/download/.svn/text-base/msvcr71.dll
Resource
win7-20240221-en
Behavioral task
behavioral18
Sample
download/download/.svn/text-base/msvcr71.dll
Resource
win10v2004-20240508-en
Behavioral task
behavioral19
Sample
download/download/.svn/text-base/zlib1.dll
Resource
win7-20240221-en
Behavioral task
behavioral20
Sample
download/download/.svn/text-base/zlib1.dll
Resource
win10v2004-20240508-en
Behavioral task
behavioral21
Sample
download/download/MiniTPFw.exe
Resource
win7-20240508-en
Behavioral task
behavioral22
Sample
download/download/MiniTPFw.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral23
Sample
download/download/msvcp71.dll
Resource
win7-20240508-en
Behavioral task
behavioral24
Sample
download/download/msvcp71.dll
Resource
win10v2004-20240508-en
Behavioral task
behavioral25
Sample
download/download/msvcr71.dll
Resource
win7-20240508-en
Behavioral task
behavioral26
Sample
download/download/msvcr71.dll
Resource
win10v2004-20240426-en
Behavioral task
behavioral27
Sample
download/download/zlib1.dll
Resource
win7-20240419-en
Behavioral task
behavioral28
Sample
download/download/zlib1.dll
Resource
win10v2004-20240508-en
Behavioral task
behavioral29
Sample
download/xldl.dll
Resource
win7-20231129-en
Behavioral task
behavioral30
Sample
download/xldl.dll
Resource
win10v2004-20240426-en
General
-
Target
SogouSoftwareLoader.dll
-
Size
450KB
-
MD5
b1ce2dba9515e144908aa34ac77f5a46
-
SHA1
0a3e601eeba273a16d815c5e59793eb73db9daad
-
SHA256
5a7349e46f16ec394af8575b666c132c010bacaa2c59da472b842ffeccc5623f
-
SHA512
d0a78b5de9126b8126b531fb8f72ae375aac898930dccd8a61f173c28470895daab56b368c34a5925020dfdc642785651445967904d8756bb1ce7c1d2f95525a
-
SSDEEP
12288:DFQXgN67wUjArVzhapfG8K/Fyh9xiBvych3t3Dmj0UIl9eNeXpu:C+yCZpm0X9eyu
Malware Config
Signatures
-
Blocklisted process makes network request 5 IoCs
flow pid Process 5 1924 rundll32.exe 6 1924 rundll32.exe 8 1924 rundll32.exe 10 1924 rundll32.exe 12 1924 rundll32.exe -
Downloads MZ/PE file
-
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 rundll32.exe -
Drops file in Program Files directory 1 IoCs
description ioc Process File created C:\Program Files (x86)\SogouSoftware\tmp\ExternalApp.exe rundll32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1644 wrote to memory of 1924 1644 rundll32.exe 28 PID 1644 wrote to memory of 1924 1644 rundll32.exe 28 PID 1644 wrote to memory of 1924 1644 rundll32.exe 28 PID 1644 wrote to memory of 1924 1644 rundll32.exe 28 PID 1644 wrote to memory of 1924 1644 rundll32.exe 28 PID 1644 wrote to memory of 1924 1644 rundll32.exe 28 PID 1644 wrote to memory of 1924 1644 rundll32.exe 28
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\SogouSoftwareLoader.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1644 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\SogouSoftwareLoader.dll,#12⤵
- Blocklisted process makes network request
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
PID:1924
-