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Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
13/07/2024, 16:34
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
427ae18d86d1163216e23551d4ef09cf_JaffaCakes118.dll
Resource
win7-20240705-en
3 signatures
150 seconds
General
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Target
427ae18d86d1163216e23551d4ef09cf_JaffaCakes118.dll
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Size
555KB
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MD5
427ae18d86d1163216e23551d4ef09cf
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SHA1
337ffa2db95b8e03a3017702ed84666113512744
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SHA256
f92f0a55af5d012e0524929713895e2ffefe0311ab9308e1d0a8aa7b83955fda
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SHA512
f40b29f71ad6df76ed166541b5f22aed7b795db08fc1fdc8920ce1f1e6784bbdc42619f61f1cf3d7d2e8710548698ab49f20bc9021d4d504e5c567b3f2ab975d
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SSDEEP
6144:EuVZOIIL4jp9QhlcebRY82X7EybcHbNRXXYZuDJOi0YBodw/AQ8/U0vSFqd6KYSp:npIL4kd6f4hHLnQI4X/UO650cG15
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs 3 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}\ = "yvhlibP" regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}\NoExplorer = "1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736} regsvr32.exe -
Modifies registry class 64 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\yvhlib.DLL regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5509CB1F-1FA7-4CCA-AA49-6737315FBE45}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5509CB1F-1FA7-4CCA-AA49-6737315FBE45}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{81F56B85-D63F-4267-B599-6DF71651C318}\ = "IPystuitckfexg" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{81F56B85-D63F-4267-B599-6DF71651C318}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{81F56B85-D63F-4267-B599-6DF71651C318}\NumMethods regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exfwocbadgswehe.Mystuitckfexg.1\ = "yvhlibB Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5509CB1F-1FA7-4CCA-AA49-6737315FBE45}\TypeLib\ = "{C7E40123-DE83-458F-A590-D6F6AC9E4CD8}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exfwocbadgswehe.Pystuitckfexg\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}\ProgID\ = "yvhlib.AClass.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exfwocbadgswehe.Mystuitckfexg regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{81F56B85-D63F-4267-B599-6DF71651C318}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}\VersionIndependentProgID\ = "yvhlib.AClass" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81F56B85-D63F-4267-B599-6DF71651C318} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exfwocbadgswehe.Pystuitckfexg\CLSID\ = "{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exfwocbadgswehe.Pystuitckfexg.1\CLSID\ = "{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{81F56B85-D63F-4267-B599-6DF71651C318}\TypeLib\ = "{C7E40123-DE83-458F-A590-D6F6AC9E4CD8}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5509CB1F-1FA7-4CCA-AA49-6737315FBE45}\AppID = "{26723C9C-001D-419C-A083-D581FD52B3A7}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5509CB1F-1FA7-4CCA-AA49-6737315FBE45}\VersionIndependentProgID\ = "yvhlib.BClass" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{26723C9C-001D-419C-A083-D581FD52B3A7}\ = "yvhlib" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{755E20D5-0D04-4279-9EE0-4C5027D4C750}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{755E20D5-0D04-4279-9EE0-4C5027D4C750}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81F56B85-D63F-4267-B599-6DF71651C318}\InProcServer32\ThreadingModel = "Both" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{81F56B85-D63F-4267-B599-6DF71651C318}\ProxyStubClsid32\ = "{81F56B85-D63F-4267-B599-6DF71651C318}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5509CB1F-1FA7-4CCA-AA49-6737315FBE45}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\427ae18d86d1163216e23551d4ef09cf_JaffaCakes118.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C7E40123-DE83-458F-A590-D6F6AC9E4CD8}\1.0\ = "yvhlib Type Library" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C7E40123-DE83-458F-A590-D6F6AC9E4CD8}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exfwocbadgswehe.Pystuitckfexg\CurVer\ = "2" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exfwocbadgswehe.Mystuitckfexg\CLSID\ = "{5509CB1F-1FA7-4CCA-AA49-6737315FBE45}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exfwocbadgswehe.Mystuitckfexg\CurVer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{81F56B85-D63F-4267-B599-6DF71651C318}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{755E20D5-0D04-4279-9EE0-4C5027D4C750}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{755E20D5-0D04-4279-9EE0-4C5027D4C750}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{81F56B85-D63F-4267-B599-6DF71651C318}\ = "PSFactoryBuffer" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exfwocbadgswehe.Mystuitckfexg.1\CLSID\ = "{5509CB1F-1FA7-4CCA-AA49-6737315FBE45}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{755E20D5-0D04-4279-9EE0-4C5027D4C750}\NumMethods regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C7E40123-DE83-458F-A590-D6F6AC9E4CD8}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{755E20D5-0D04-4279-9EE0-4C5027D4C750}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{755E20D5-0D04-4279-9EE0-4C5027D4C750}\ProxyStubClsid32\ = "{81F56B85-D63F-4267-B599-6DF71651C318}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}\TypeLib\ = "{C7E40123-DE83-458F-A590-D6F6AC9E4CD8}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{755E20D5-0D04-4279-9EE0-4C5027D4C750}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5509CB1F-1FA7-4CCA-AA49-6737315FBE45}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{755E20D5-0D04-4279-9EE0-4C5027D4C750} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{81F56B85-D63F-4267-B599-6DF71651C318}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{81F56B85-D63F-4267-B599-6DF71651C318}\TypeLib\ = "{C7E40123-DE83-458F-A590-D6F6AC9E4CD8}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5509CB1F-1FA7-4CCA-AA49-6737315FBE45}\InprocServer32 regsvr32.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{49AE8F1B-54E7-4d8b-AE22-A1B4D709230B}\{EFD959DC-3B3E-426d-9F96-6686C1963329} = 7900760068006c00690062002e0064006c006c00 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C7E40123-DE83-458F-A590-D6F6AC9E4CD8}\1.0\HELPDIR\ regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{755E20D5-0D04-4279-9EE0-4C5027D4C750}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}\ = "PPCM Data Decoder" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{81F56B85-D63F-4267-B599-6DF71651C318} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{81F56B85-D63F-4267-B599-6DF71651C318}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{755E20D5-0D04-4279-9EE0-4C5027D4C750}\ = "IMystuitckfexg" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5509CB1F-1FA7-4CCA-AA49-6737315FBE45} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F7323DE8-9519-45B2-8F77-9FAF1FFA5736}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C7E40123-DE83-458F-A590-D6F6AC9E4CD8} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{81F56B85-D63F-4267-B599-6DF71651C318}\ = "IPystuitckfexg" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exfwocbadgswehe.Mystuitckfexg\ = "yvhlibB Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exfwocbadgswehe.Pystuitckfexg.1\ = "yvhlibA Class" regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2540 wrote to memory of 2376 2540 regsvr32.exe 31 PID 2540 wrote to memory of 2376 2540 regsvr32.exe 31 PID 2540 wrote to memory of 2376 2540 regsvr32.exe 31 PID 2540 wrote to memory of 2376 2540 regsvr32.exe 31 PID 2540 wrote to memory of 2376 2540 regsvr32.exe 31 PID 2540 wrote to memory of 2376 2540 regsvr32.exe 31 PID 2540 wrote to memory of 2376 2540 regsvr32.exe 31
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\427ae18d86d1163216e23551d4ef09cf_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2540 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\427ae18d86d1163216e23551d4ef09cf_JaffaCakes118.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2376
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