Overview
overview
7Static
static
16fae566b41...18.exe
windows7-x64
76fae566b41...18.exe
windows10-2004-x64
7mcffplg.dll
windows7-x64
3mcffplg.dll
windows10-2004-x64
3saffplg.js
windows7-x64
3saffplg.js
windows10-2004-x64
3mcieplg.dll
windows7-x64
6mcieplg.dll
windows10-2004-x64
3x64/mcieplg.dll
windows7-x64
7x64/mcieplg.dll
windows10-2004-x64
1$TEMP/$_0_...st.exe
windows7-x64
$TEMP/$_0_...st.exe
windows10-2004-x64
$TEMP/$_0_...ui.dll
windows7-x64
1$TEMP/$_0_...ui.dll
windows10-2004-x64
1$TEMP/$_0_...ns.dll
windows7-x64
1$TEMP/$_0_...ns.dll
windows10-2004-x64
1mcsacins.dll
windows7-x64
3mcsacins.dll
windows10-2004-x64
3saInst.exe
windows7-x64
7saInst.exe
windows10-2004-x64
7$TEMP/$_0_...st.exe
windows7-x64
$TEMP/$_0_...st.exe
windows10-2004-x64
mcbrwctl.dll
windows7-x64
3mcbrwctl.dll
windows10-2004-x64
3mcsacore.exe
windows7-x64
3mcsacore.exe
windows10-2004-x64
3mcsacoreps.dll
windows7-x64
3mcsacoreps.dll
windows10-2004-x64
3saupkeep.dll
windows7-x64
3saupkeep.dll
windows10-2004-x64
3uninstall.exe
windows7-x64
3uninstall.exe
windows10-2004-x64
3Analysis
-
max time kernel
13s -
max time network
19s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
25/07/2024, 13:01
Static task
static1
Behavioral task
behavioral1
Sample
6fae566b41f9c53f1f4d137ff241aac6_JaffaCakes118.exe
Resource
win7-20240705-en
windows7-x64
Behavioral task
behavioral2
Sample
6fae566b41f9c53f1f4d137ff241aac6_JaffaCakes118.exe
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral3
Sample
mcffplg.dll
Resource
win7-20240708-en
windows7-x64
Behavioral task
behavioral4
Sample
mcffplg.dll
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral5
Sample
saffplg.js
Resource
win7-20240708-en
windows7-x64
Behavioral task
behavioral6
Sample
saffplg.js
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral7
Sample
mcieplg.dll
Resource
win7-20240708-en
windows7-x64
Behavioral task
behavioral8
Sample
mcieplg.dll
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral9
Sample
x64/mcieplg.dll
Resource
win7-20240708-en
windows7-x64
Behavioral task
behavioral10
Sample
x64/mcieplg.dll
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral11
Sample
$TEMP/$_0_ /mcinst.exe
Resource
win7-20240704-en
windows7-x64
Behavioral task
behavioral12
Sample
$TEMP/$_0_ /mcinst.exe
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral13
Sample
$TEMP/$_0_ /mcplgui.dll
Resource
win7-20240704-en
windows7-x64
Behavioral task
behavioral14
Sample
$TEMP/$_0_ /mcplgui.dll
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral15
Sample
$TEMP/$_0_ /mcsacins.dll
Resource
win7-20240704-en
windows7-x64
Behavioral task
behavioral16
Sample
$TEMP/$_0_ /mcsacins.dll
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral17
Sample
mcsacins.dll
Resource
win7-20240705-en
windows7-x64
Behavioral task
behavioral18
Sample
mcsacins.dll
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral19
Sample
saInst.exe
Resource
win7-20240708-en
windows7-x64
Behavioral task
behavioral20
Sample
saInst.exe
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral21
Sample
$TEMP/$_0_ /saInst.exe
Resource
win7-20240708-en
windows7-x64
Behavioral task
behavioral22
Sample
$TEMP/$_0_ /saInst.exe
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral23
Sample
mcbrwctl.dll
Resource
win7-20240704-en
windows7-x64
Behavioral task
behavioral24
Sample
mcbrwctl.dll
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral25
Sample
mcsacore.exe
Resource
win7-20240704-en
windows7-x64
Behavioral task
behavioral26
Sample
mcsacore.exe
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral27
Sample
mcsacoreps.dll
Resource
win7-20240704-en
windows7-x64
Behavioral task
behavioral28
Sample
mcsacoreps.dll
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral29
Sample
saupkeep.dll
Resource
win7-20240705-en
windows7-x64
Behavioral task
behavioral30
Sample
saupkeep.dll
Resource
win10v2004-20240709-en
windows10-2004-x64
Behavioral task
behavioral31
Sample
uninstall.exe
Resource
win7-20240708-en
windows7-x64
Behavioral task
behavioral32
Sample
uninstall.exe
Resource
win10v2004-20240709-en
windows10-2004-x64
General
-
Target
mcsacoreps.dll
-
Size
55KB
-
MD5
78a8104c1b4d817db074ea6d8e211f6b
-
SHA1
eaf8e9f2059bd04eb5438270cb2583565c404e5f
-
SHA256
c19e9ca1933817108cdbe28f09807fe52e05f02b97fbd30655e02a4518737b0b
-
SHA512
6b26ba73c03dbd92cf74de153c038a96a2831901c60c0a7f78122d8ffd370a4bf531a99ead75e948d6e8b2a0852535bd960e977ed0f39cf2a7b912e5e4e9cff6
-
SSDEEP
768:kmaupygSA8gRew/u6whRp1PT+/PcjOYi9GdVtdFaw1L2b3mm:kmCdAH9GnRpJ+/Z9etdUCa2m
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 regsvr32.exe -
Modifies registry class 31 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0CB58125-ED4E-4125-B72E-BA3435AC4417}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\mcsacoreps.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4419}\NumMethods regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4421}\NumMethods\ = "15" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0CB58125-ED4E-4125-B72E-BA3435AC4417} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4421} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4421}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4421}\NumMethods regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4418} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4419}\ = "IMcSACoreDownloadEval" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4421}\ProxyStubClsid32\ = "{0CB58125-ED4E-4125-B72E-BA3435AC4417}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0CB58125-ED4E-4125-B72E-BA3435AC4417}\InProcServer32\ThreadingModel = "Both" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4417}\ = "IMcSACore" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4417}\NumMethods regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4417} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4418}\NumMethods regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4421}\ = "IMcSARegistryProxy" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4417}\NumMethods\ = "35" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4418}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4418}\NumMethods\ = "12" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4419}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4419}\ProxyStubClsid32\ = "{0CB58125-ED4E-4125-B72E-BA3435AC4417}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4419}\NumMethods\ = "11" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4418}\ProxyStubClsid32\ = "{0CB58125-ED4E-4125-B72E-BA3435AC4417}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0CB58125-ED4E-4125-B72E-BA3435AC4417}\ = "PSFactoryBuffer" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4417}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4417}\ProxyStubClsid32\ = "{0CB58125-ED4E-4125-B72E-BA3435AC4417}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4418}\ = "IMcSACoreInfoBag" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0CB58125-ED4E-4125-B72E-BA3435AC4419} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0CB58125-ED4E-4125-B72E-BA3435AC4417}\InProcServer32 regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2540 wrote to memory of 2588 2540 regsvr32.exe 29 PID 2540 wrote to memory of 2588 2540 regsvr32.exe 29 PID 2540 wrote to memory of 2588 2540 regsvr32.exe 29 PID 2540 wrote to memory of 2588 2540 regsvr32.exe 29 PID 2540 wrote to memory of 2588 2540 regsvr32.exe 29 PID 2540 wrote to memory of 2588 2540 regsvr32.exe 29 PID 2540 wrote to memory of 2588 2540 regsvr32.exe 29
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\mcsacoreps.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2540 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\mcsacoreps.dll2⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:2588
-