Analysis
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max time kernel
150s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
31-05-2024 14:23
Static task
static1
Behavioral task
behavioral1
Sample
874f580fc0d1c86aed481c4a056249f7_JaffaCakes118.dll
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
874f580fc0d1c86aed481c4a056249f7_JaffaCakes118.dll
Resource
win10v2004-20240508-en
General
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Target
874f580fc0d1c86aed481c4a056249f7_JaffaCakes118.dll
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Size
5.0MB
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MD5
874f580fc0d1c86aed481c4a056249f7
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SHA1
b5f1dc1c2c78f04efd87f15a2a4e7413f7a0fb0a
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SHA256
c06cc1cbe70329aee778fd8e032187dd411c1035cb0ce4f7553b7c777dce91cf
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SHA512
34a96890c46bcabbfd3aa529dc2e99486d494c0d500f80d55ecd7c6766ba30a5b714de386bfb275b14ba0a4cd57bf406aa051045aa247ba014a89bc3e992698d
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SSDEEP
98304:+DqPoBhz1aRxcSUDk36SAEdhG3R8yAVp2H:+DqPe1Cxcxk3ZAE8R8yc4H
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3240) 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 3076 mssecsvc.exe 2392 mssecsvc.exe 2524 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:
mssecsvc.exerundll32.exedescription ioc process File created C:\WINDOWS\tasksche.exe mssecsvc.exe File created C:\WINDOWS\mssecsvc.exe rundll32.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\IntranetName = "1" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" mssecsvc.exe 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 -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2776 wrote to memory of 4408 2776 rundll32.exe rundll32.exe PID 2776 wrote to memory of 4408 2776 rundll32.exe rundll32.exe PID 2776 wrote to memory of 4408 2776 rundll32.exe rundll32.exe PID 4408 wrote to memory of 3076 4408 rundll32.exe mssecsvc.exe PID 4408 wrote to memory of 3076 4408 rundll32.exe mssecsvc.exe PID 4408 wrote to memory of 3076 4408 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\874f580fc0d1c86aed481c4a056249f7_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2776 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\874f580fc0d1c86aed481c4a056249f7_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4408 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3076 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:2524
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2392
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD528fcddc0a0725a61145bbedc0a138200
SHA1a8294514d47b8b471357897918cc60395dc4e740
SHA2565e82efa4c3841ab99fd9eaab56a05d846ebc1584fc427a49a967901464b88b9a
SHA512ada15e9c6e421c807fb3bacb5632503855632589d749d42b89d4dcc2c55662d90abf73b05e5c11d17dd2ca5ca9825d00b5c058e76f8efab93fdf43f143476c52
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C:\Windows\tasksche.exeFilesize
3.4MB
MD5a1b15ad577eb64fb17d70c8c1747f613
SHA175bffb9189c9a33ff176bb95184b75cf061d796e
SHA256bea321d1582ea8c9505230cc3232942e2bb65c43c738f75942f868aefd59c07d
SHA51229f04d7a2f79b0feec5916e7698e723a655ae14756a665e197f013000b2faeea0d89226c250fb8c5c39cadf9aba4501786ff788d73c6ec5379a8e61cd6d9a1d7