Analysis
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max time kernel
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max time network
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platform
windows10-2004_x64 -
resource
win10v2004-20250410-en -
resource tags
arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system -
submitted
15/04/2025, 09:53
Static task
static1
General
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Target
JaffaCakes118_b9a225077668078c82787f02091fa841.dll
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Size
309KB
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MD5
b9a225077668078c82787f02091fa841
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SHA1
1d3b8681a5c04965938175cb1ea792c9370cce6d
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SHA256
94a3a00de6c87443a0941e089cb0db04674a6c0094ddef85a48baf61dfc7654c
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SHA512
ace70fdd277424d4df1ecc227a5ea95d9fe11ac742eeef5b998dfca65092ef391019d391b5c0e97fb098bf5eeac24d5ea14462fdd4e61b5bafbc70510ee6249c
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SSDEEP
6144:W25rerE2hT+XUanF8NTQ84rDuYvGnZtDX1qZzpRbwk2:nIwe+UaTwEZzpRbo
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 1 IoCs
pid Process 5192 regsvr32mgr.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\regsvr32mgr.exe regsvr32.exe -
resource yara_rule behavioral1/memory/5192-6-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral1/memory/5192-8-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral1/memory/5192-13-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral1/memory/5192-15-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral1/memory/5192-14-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral1/memory/5192-12-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral1/memory/5192-10-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral1/memory/5192-7-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral1/memory/5192-18-0x0000000000400000-0x000000000041A000-memory.dmp upx -
System Location Discovery: System Language Discovery 1 TTPs 3 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 regsvr32mgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{8142CFC0-19DF-11F0-947A-66F6155E5B6D} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "451475793" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\"" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe -
Modifies registry class 14 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\msinkdivlib.InkDivider\CurVer\ = "msinkdivlib.InkDivider.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{56D04F5D-964F-4DBF-8D23-B97989E53418} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{56D04F5D-964F-4DBF-8D23-B97989E53418}\1.5 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\msinkdivlib.InkDivider.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\msinkdivlib.InkDivider.1\ = "InkDivider Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\msinkdivlib.InkDivider.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\msinkdivlib.InkDivider.1\CLSID\ = "{8854F6A0-4683-4AE7-9191-752FE64612C3}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\msinkdivlib.InkDivider regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\msinkdivlib.InkDivider\CLSID\ = "{8854F6A0-4683-4AE7-9191-752FE64612C3}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{56D04F5D-964F-4DBF-8D23-B97989E53418}\1.5\HELPDIR regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\msinkdivlib.InkDivider\ = "InkDivider Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\msinkdivlib.InkDivider\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\msinkdivlib.InkDivider\CurVer regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 5192 regsvr32mgr.exe 5192 regsvr32mgr.exe 5192 regsvr32mgr.exe 5192 regsvr32mgr.exe 5192 regsvr32mgr.exe 5192 regsvr32mgr.exe 5192 regsvr32mgr.exe 5192 regsvr32mgr.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 5192 regsvr32mgr.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 5664 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 5664 iexplore.exe 5664 iexplore.exe 4884 IEXPLORE.EXE 4884 IEXPLORE.EXE 4884 IEXPLORE.EXE 4884 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 5192 regsvr32mgr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1252 wrote to memory of 1512 1252 regsvr32.exe 86 PID 1252 wrote to memory of 1512 1252 regsvr32.exe 86 PID 1252 wrote to memory of 1512 1252 regsvr32.exe 86 PID 1512 wrote to memory of 5192 1512 regsvr32.exe 88 PID 1512 wrote to memory of 5192 1512 regsvr32.exe 88 PID 1512 wrote to memory of 5192 1512 regsvr32.exe 88 PID 5192 wrote to memory of 5664 5192 regsvr32mgr.exe 90 PID 5192 wrote to memory of 5664 5192 regsvr32mgr.exe 90 PID 5664 wrote to memory of 4884 5664 iexplore.exe 91 PID 5664 wrote to memory of 4884 5664 iexplore.exe 91 PID 5664 wrote to memory of 4884 5664 iexplore.exe 91
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b9a225077668078c82787f02091fa841.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1252 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b9a225077668078c82787f02091fa841.dll2⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1512 -
C:\Windows\SysWOW64\regsvr32mgr.exeC:\Windows\SysWOW64\regsvr32mgr.exe3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:5192 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"4⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5664 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5664 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4884
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
54KB
MD5fba9053e3a7f286a68a072f5d1b57b42
SHA119c4800e8de1e83ff7bf0b96a96563e8430ce9f3
SHA2565675295a26c3839803fd25fb667f2be09c2b6bf3412202a09c3dfc9a46eb4ca4
SHA512ee53bbd9531801df780279da49bd34863513db67fbacbd6b0abb844d02cb76f5e86ed39ad28585b27aa42d3659a8fc9f3d1459f92f81eca970e69bac7c403c64