Resubmissions
24-02-2024 15:44
240224-s6pzqafh53 1024-02-2024 14:06
240224-relmjsdh45 1024-02-2024 11:48
240224-nyvssabe4w 3Analysis
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max time kernel
599s -
max time network
601s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
24-02-2024 14:06
Static task
static1
Behavioral task
behavioral1
Sample
Ransomware.7ev3n.exe
Resource
win10v2004-20240221-en
Behavioral task
behavioral2
Sample
Ransomware.BadRabbit.exe
Resource
win10v2004-20240221-en
Behavioral task
behavioral3
Sample
Ransomware.CoronaVirus.exe
Resource
win10v2004-20240221-en
Behavioral task
behavioral4
Sample
Ransomware.CryptoLocker.exe
Resource
win10v2004-20240221-en
General
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Target
Ransomware.BadRabbit.exe
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Size
431KB
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MD5
fbbdc39af1139aebba4da004475e8839
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SHA1
de5c8d858e6e41da715dca1c019df0bfb92d32c0
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SHA256
630325cac09ac3fab908f903e3b00d0dadd5fdaa0875ed8496fcbb97a558d0da
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SHA512
74eca8c01de215b33d5ceea1fda3f3bef96b513f58a750dba04b0de36f7ef4f7846a6431d52879ca0d8641bfd504d4721a9a96fa2e18c6888fd67fa77686af87
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SSDEEP
12288:BHNTywFAvN86pLbqWRKHZKfErrZJyZ0yqsGO3XR63:vT56NbqWRwZaEr3yt2O3XR63
Malware Config
Signatures
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BadRabbit
Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.
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Mimikatz
mimikatz is an open source tool to dump credentials on Windows.
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mimikatz is an open source tool to dump credentials on Windows 1 IoCs
Processes:
resource yara_rule C:\Windows\37E8.tmp mimikatz -
Blocklisted process makes network request 8 IoCs
Processes:
rundll32.exeflow pid process 356 2580 rundll32.exe 395 2580 rundll32.exe 437 2580 rundll32.exe 479 2580 rundll32.exe 510 2580 rundll32.exe 534 2580 rundll32.exe 571 2580 rundll32.exe 612 2580 rundll32.exe -
Executes dropped EXE 1 IoCs
Processes:
37E8.tmppid process 4892 37E8.tmp -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 2580 rundll32.exe -
Drops file in Windows directory 5 IoCs
Processes:
rundll32.exeRansomware.BadRabbit.exedescription ioc process File created C:\Windows\cscc.dat rundll32.exe File created C:\Windows\dispci.exe rundll32.exe File opened for modification C:\Windows\37E8.tmp rundll32.exe File created C:\Windows\infpub.dat Ransomware.BadRabbit.exe File opened for modification C:\Windows\infpub.dat rundll32.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 3444 schtasks.exe 1588 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
Processes:
rundll32.exe37E8.tmppid process 2580 rundll32.exe 2580 rundll32.exe 2580 rundll32.exe 2580 rundll32.exe 4892 37E8.tmp 4892 37E8.tmp 4892 37E8.tmp 4892 37E8.tmp 4892 37E8.tmp 4892 37E8.tmp -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
rundll32.exe37E8.tmpdescription pid process Token: SeShutdownPrivilege 2580 rundll32.exe Token: SeDebugPrivilege 2580 rundll32.exe Token: SeTcbPrivilege 2580 rundll32.exe Token: SeDebugPrivilege 4892 37E8.tmp -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
Ransomware.BadRabbit.exerundll32.execmd.execmd.execmd.exedescription pid process target process PID 2408 wrote to memory of 2580 2408 Ransomware.BadRabbit.exe rundll32.exe PID 2408 wrote to memory of 2580 2408 Ransomware.BadRabbit.exe rundll32.exe PID 2408 wrote to memory of 2580 2408 Ransomware.BadRabbit.exe rundll32.exe PID 2580 wrote to memory of 4608 2580 rundll32.exe cmd.exe PID 2580 wrote to memory of 4608 2580 rundll32.exe cmd.exe PID 2580 wrote to memory of 4608 2580 rundll32.exe cmd.exe PID 4608 wrote to memory of 1052 4608 cmd.exe schtasks.exe PID 4608 wrote to memory of 1052 4608 cmd.exe schtasks.exe PID 4608 wrote to memory of 1052 4608 cmd.exe schtasks.exe PID 2580 wrote to memory of 1324 2580 rundll32.exe cmd.exe PID 2580 wrote to memory of 1324 2580 rundll32.exe cmd.exe PID 2580 wrote to memory of 1324 2580 rundll32.exe cmd.exe PID 2580 wrote to memory of 1956 2580 rundll32.exe cmd.exe PID 2580 wrote to memory of 1956 2580 rundll32.exe cmd.exe PID 2580 wrote to memory of 1956 2580 rundll32.exe cmd.exe PID 1324 wrote to memory of 3444 1324 cmd.exe schtasks.exe PID 1324 wrote to memory of 3444 1324 cmd.exe schtasks.exe PID 1324 wrote to memory of 3444 1324 cmd.exe schtasks.exe PID 2580 wrote to memory of 4892 2580 rundll32.exe 37E8.tmp PID 2580 wrote to memory of 4892 2580 rundll32.exe 37E8.tmp PID 1956 wrote to memory of 1588 1956 cmd.exe schtasks.exe PID 1956 wrote to memory of 1588 1956 cmd.exe schtasks.exe PID 1956 wrote to memory of 1588 1956 cmd.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Ransomware.BadRabbit.exe"C:\Users\Admin\AppData\Local\Temp\Ransomware.BadRabbit.exe"1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 152⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe/c schtasks /Delete /F /TN rhaegal3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /Delete /F /TN rhaegal4⤵
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C:\Windows\SysWOW64\cmd.exe/c schtasks /Create /RU SYSTEM /SC ONSTART /TN rhaegal /TR "C:\Windows\system32\cmd.exe /C Start \"\" \"C:\Windows\dispci.exe\" -id 3414685727 && exit"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /Create /RU SYSTEM /SC ONSTART /TN rhaegal /TR "C:\Windows\system32\cmd.exe /C Start \"\" \"C:\Windows\dispci.exe\" -id 3414685727 && exit"4⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\cmd.exe/c schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 14:40:003⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 14:40:004⤵
- Creates scheduled task(s)
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C:\Windows\37E8.tmp"C:\Windows\37E8.tmp" \\.\pipe\{CDE69D93-1F8F-41C6-B3EC-57433C527EE9}3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Windows\37E8.tmpFilesize
60KB
MD5347ac3b6b791054de3e5720a7144a977
SHA1413eba3973a15c1a6429d9f170f3e8287f98c21c
SHA256301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c
SHA5129a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787
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C:\Windows\infpub.datFilesize
401KB
MD51d724f95c61f1055f0d02c2154bbccd3
SHA179116fe99f2b421c52ef64097f0f39b815b20907
SHA256579fd8a0385482fb4c789561a30b09f25671e86422f40ef5cca2036b28f99648
SHA512f2d7b018d1516df1c97cfff5507957c75c6d9bf8e2ce52ae0052706f4ec62f13eba6d7be17e6ad2b693fdd58e1fd091c37f17bd2b948cdcd9b95b4ad428c0113
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memory/2580-3-0x0000000002DC0000-0x0000000002E28000-memory.dmpFilesize
416KB
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memory/2580-11-0x0000000002DC0000-0x0000000002E28000-memory.dmpFilesize
416KB
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memory/2580-14-0x0000000002DC0000-0x0000000002E28000-memory.dmpFilesize
416KB