Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
05-05-2024 07:38
Static task
static1
Behavioral task
behavioral1
Sample
16a59054401b9207346e5ddaf2251025_JaffaCakes118.dll
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
16a59054401b9207346e5ddaf2251025_JaffaCakes118.dll
Resource
win10v2004-20240419-en
General
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Target
16a59054401b9207346e5ddaf2251025_JaffaCakes118.dll
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Size
5.0MB
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MD5
16a59054401b9207346e5ddaf2251025
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SHA1
a51966f841d905378fed62b9fcf24740d17d78e0
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SHA256
1e334556232ab5d7ef5f416d8655ee93805243a1131ba98304bccb1aa75de48c
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SHA512
c38b80516b76b3dd02ad902ad92271c2de5a73164d61c5390e1f3be5b625cf7c8b4cce4a7b39f4ebb16dfd61e6185e17ff1d6a7ce48eba859b6e883f993f757e
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SSDEEP
24576:zbLgddQhfdmMSirYbcMNge6hWRgImGt/8CatZ5PsDADorxoIl+2:znAQqMSPbcBZQyvGSIkI
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3340) 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 1256 mssecsvc.exe 2568 mssecsvc.exe 2588 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 System32 directory 1 IoCs
Processes:
mssecsvc.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat mssecsvc.exe -
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 24 IoCs
Processes:
mssecsvc.exedescription ioc process Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-51-42-44-c2-25\WpadDecisionReason = "1" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{184F195C-B319-486B-AB28-5230416E13A8}\WpadDecisionTime = 902cf941bf9eda01 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{184F195C-B319-486B-AB28-5230416E13A8}\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-51-42-44-c2-25 mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f006a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{184F195C-B319-486B-AB28-5230416E13A8} mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-51-42-44-c2-25\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{184F195C-B319-486B-AB28-5230416E13A8}\b6-51-42-44-c2-25 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{184F195C-B319-486B-AB28-5230416E13A8}\WpadNetworkName = "Network 3" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{184F195C-B319-486B-AB28-5230416E13A8}\WpadDecisionReason = "1" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-51-42-44-c2-25\WpadDecisionTime = 902cf941bf9eda01 mssecsvc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2416 wrote to memory of 1876 2416 rundll32.exe rundll32.exe PID 2416 wrote to memory of 1876 2416 rundll32.exe rundll32.exe PID 2416 wrote to memory of 1876 2416 rundll32.exe rundll32.exe PID 2416 wrote to memory of 1876 2416 rundll32.exe rundll32.exe PID 2416 wrote to memory of 1876 2416 rundll32.exe rundll32.exe PID 2416 wrote to memory of 1876 2416 rundll32.exe rundll32.exe PID 2416 wrote to memory of 1876 2416 rundll32.exe rundll32.exe PID 1876 wrote to memory of 1256 1876 rundll32.exe mssecsvc.exe PID 1876 wrote to memory of 1256 1876 rundll32.exe mssecsvc.exe PID 1876 wrote to memory of 1256 1876 rundll32.exe mssecsvc.exe PID 1876 wrote to memory of 1256 1876 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\16a59054401b9207346e5ddaf2251025_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2416 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\16a59054401b9207346e5ddaf2251025_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1876 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1256 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:2588
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2568
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD541bce42dd9ad95794965ca2e7588116e
SHA1319a77834e7ee73a787ce6ec24a12faf8a584a4a
SHA256747cf92ea523b0fbaa5c50cbf37900c75a7924377589aaffe742d614b70a7b19
SHA512f4f2001300025325062be4f10547ad05d6f219a8ac4cdd1feea2ab40d644fbad5f07b39e8d9cde5ff430e3b17cf66f235cac6d0735304797062fb6849c947158
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C:\Windows\tasksche.exeFilesize
3.4MB
MD5f2ed6cd57c5f67d47a0f40ec817b2619
SHA19d6741b61946e4defb05ab6b3affa6113144f40b
SHA256c2dbb1a25455be8de0f7a99d8212b325697ff643f8f0409c1db660dece0d2a80
SHA5120ac0f0b9d27e61e97e7d5a7dd70a8c26d49e767f40fb751e35717dce9436df56f8df001d0b19263a24cbfea71b872bd6352fd792a4bf85d8db714f404b569219