Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
30-04-2024 03:36
Static task
static1
Behavioral task
behavioral1
Sample
08ef488d70154b41f307643313bebcea_JaffaCakes118.dll
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
08ef488d70154b41f307643313bebcea_JaffaCakes118.dll
Resource
win10v2004-20240419-en
General
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Target
08ef488d70154b41f307643313bebcea_JaffaCakes118.dll
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Size
5.0MB
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MD5
08ef488d70154b41f307643313bebcea
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SHA1
1e1b7619b59017e6dab86084f7c28c4b0ce8352c
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SHA256
9f3494834656ca415f99b8ac867dba6107e39cd142a91b5fdf8d4bd152059df5
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SHA512
378b97074146fee34d9dad73bcc2284c8c3e3cc9faf140197533dbbfb444a721384cad2573aeaff46b583c0a11bf7f97be7f065051a6424bc5c2781e5f04717c
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SSDEEP
24576:SbLgddQhfdmMSirYbcMNgef0c8uME7A4kqAH1pNZtA0p+9XEk:SnAQqMSPbcBV2R8yAH1plAH
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3298) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
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Executes dropped EXE 3 IoCs
Processes:
mssecsvc.exemssecsvc.exetasksche.exepid process 3108 mssecsvc.exe 4984 mssecsvc.exe 3868 tasksche.exe -
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
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Drops file in Windows directory 2 IoCs
Processes:
rundll32.exemssecsvc.exedescription ioc process File created C:\WINDOWS\mssecsvc.exe rundll32.exe File created C:\WINDOWS\tasksche.exe mssecsvc.exe -
Modifies data under HKEY_USERS 5 IoCs
Processes:
mssecsvc.exedescription ioc process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" mssecsvc.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2024 wrote to memory of 5024 2024 rundll32.exe rundll32.exe PID 2024 wrote to memory of 5024 2024 rundll32.exe rundll32.exe PID 2024 wrote to memory of 5024 2024 rundll32.exe rundll32.exe PID 5024 wrote to memory of 3108 5024 rundll32.exe mssecsvc.exe PID 5024 wrote to memory of 3108 5024 rundll32.exe mssecsvc.exe PID 5024 wrote to memory of 3108 5024 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\08ef488d70154b41f307643313bebcea_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\08ef488d70154b41f307643313bebcea_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:5024 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3108 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:3868
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4984
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD59ebb1d4e89cea7d04a2544c648e1badd
SHA103c99a98f20f8382b526a5d4ae4628e3289dab3d
SHA25670a6ae798a17aa4e062c4c2689747bb03c6eed36fc4a7e42d5a603b5cbe4a559
SHA51224633c7a307941d24bf2b49d06dac6ab2ae98f6f538a66a8b769d29686f27333cc728d5847a4ef24106be90fa91700b5cf6783c61f8098c854ebf1b7fac51b84
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C:\Windows\tasksche.exeFilesize
3.4MB
MD5d9110c391fbbf05e6c25e742453c37d0
SHA18775113e9fb0a0588278289878bd20b18e11f260
SHA256bd97e1cc42782edfa32b75f4b1eda36975d05eb4fb40070b2322b625b20e3e05
SHA51230dbb855dfc15fbb45b757b127a3153716b978eb3847c9d91177a3124951f52a56802df79a0e5656df57e090ecaabbef5d4b17e314a324928d3f02e51dc383b8