badrabbit | 2a45e44be359fba4c85591e7b13d1ec772ed181adc41254d8b00d31b2d15878e

max time kernel
82s
max time network
85s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
08/05/2024, 16:07

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General

Target
Bad Rabit.exe
Size 431KB
Sample240508-tkr3mafa54
SHA256 630325cac09ac3fab908f903e3b00d0dadd5fdaa0875ed8496fcbb97a558d0da
MD5 fbbdc39af1139aebba4da004475e8839
SHA1 de5c8d858e6e41da715dca1c019df0bfb92d32c0
SHA512 74eca8c01de215b33d5ceea1fda3f3bef96b513f58a750dba04b0de36f7ef4f7846a6431d52879ca0d8641bfd504d4721a9a96fa2e18c6888fd67fa77686af87
SSDEEP 12288:BHNTywFAvN86pLbqWRKHZKfErrZJyZ0yqsGO3XR63:vT56NbqWRwZaEr3yt2O3XR63
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

badrabbit mimikatz ransomware

Malware Config

Signatures

BadRabbit
Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.
ransomware badrabbit
Mimikatz
mimikatz is an open source tool to dump credentials on Windows.
mimikatz

mimikatz is an open source tool to dump credentials on Windows 1 IoCs

resource	yara_rule
behavioral4/files/0x000400000002a9cc-20.dat	mimikatz

Executes dropped EXE 1 IoCs

pid	Process
1264	5534.tmp

Loads dropped DLL 1 IoCs

pid	Process
1640	rundll32.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\infpub.dat	Bad Rabit.exe
File opened for modification	C:\Windows\infpub.dat	rundll32.exe
File created	C:\Windows\cscc.dat	rundll32.exe
File created	C:\Windows\dispci.exe	rundll32.exe
File opened for modification	C:\Windows\5534.tmp	rundll32.exe

Checks SCSI registry key(s) 3 TTPs 6 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\HardwareID	msinfo32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\CompatibleIDs	msinfo32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	msinfo32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\HardwareID	msinfo32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\CompatibleIDs	msinfo32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000	msinfo32.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2712	schtasks.exe
1096	schtasks.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	msinfo32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\ECFirmwareMajorRelease	msinfo32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	msinfo32.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1264	5534.tmp
1264	5534.tmp
1264	5534.tmp
1264	5534.tmp
1264	5534.tmp
1264	5534.tmp

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
856	msinfo32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1640	rundll32.exe
Token: SeDebugPrivilege	1640	rundll32.exe
Token: SeTcbPrivilege	1640	rundll32.exe
Token: SeDebugPrivilege	1264	5534.tmp

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 1640	4740	Bad Rabit.exe	80
PID 4740 wrote to memory of 1640	4740	Bad Rabit.exe	80
PID 4740 wrote to memory of 1640	4740	Bad Rabit.exe	80
PID 1640 wrote to memory of 3616	1640	rundll32.exe	81
PID 1640 wrote to memory of 3616	1640	rundll32.exe	81
PID 1640 wrote to memory of 3616	1640	rundll32.exe	81
PID 3616 wrote to memory of 3692	3616	cmd.exe	83
PID 3616 wrote to memory of 3692	3616	cmd.exe	83
PID 3616 wrote to memory of 3692	3616	cmd.exe	83
PID 1640 wrote to memory of 764	1640	rundll32.exe	86
PID 1640 wrote to memory of 764	1640	rundll32.exe	86
PID 1640 wrote to memory of 764	1640	rundll32.exe	86
PID 1640 wrote to memory of 4452	1640	rundll32.exe	88
PID 1640 wrote to memory of 4452	1640	rundll32.exe	88
PID 1640 wrote to memory of 4452	1640	rundll32.exe	88
PID 1640 wrote to memory of 1264	1640	rundll32.exe	89
PID 1640 wrote to memory of 1264	1640	rundll32.exe	89
PID 764 wrote to memory of 1096	764	cmd.exe	92
PID 764 wrote to memory of 1096	764	cmd.exe	92
PID 764 wrote to memory of 1096	764	cmd.exe	92
PID 4452 wrote to memory of 2712	4452	cmd.exe	93
PID 4452 wrote to memory of 2712	4452	cmd.exe	93
PID 4452 wrote to memory of 2712	4452	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\Bad Rabit.exe
"C:\Users\Admin\AppData\Local\Temp\Bad Rabit.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Windows\SysWOW64\rundll32.exe
  C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
  2⤵
  - Loads dropped DLL
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1640
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3616
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      PID:3692
- - 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 2083810298 && exit"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:764
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /RU SYSTEM /SC ONSTART /TN rhaegal /TR "C:\Windows\system32\cmd.exe /C Start \"\" \"C:\Windows\dispci.exe\" -id 2083810298 && exit"
      4⤵
      Creates scheduled task(s)
      PID:1096
- - 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 16:25:00
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4452
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 16:25:00
      4⤵
      Creates scheduled task(s)
      PID:2712
- - C:\Windows\5534.tmp
    "C:\Windows\5534.tmp" \\.\pipe\{C1919E30-B066-484D-8AE2-717C47898A72}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1264

C:\Windows\system32\msinfo32.exe
"C:\Windows\system32\msinfo32.exe" "C:\Users\Admin\Desktop\ApproveEdit.nfo"
1⤵
- Checks SCSI registry key(s)
- Enumerates system info in registry
- Suspicious behavior: GetForegroundWindowSpam
PID:856

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

5534.tmp

Path C:\Windows\5534.tmp
Size 60KB
SHA256 301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c
MD5 347ac3b6b791054de3e5720a7144a977
SHA1 413eba3973a15c1a6429d9f170f3e8287f98c21c
SHA512 9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787
SSDEEP 1536:QeRCKjey4TTGLeBYEUW1SIUDoCB449rHUV:KKjey4TTmeBZUGSIUDoCq49oV
MD5 SHA1 SHA512 SSDEEP

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infpub.dat

Path C:\Windows\infpub.dat
Size 401KB
SHA256 579fd8a0385482fb4c789561a30b09f25671e86422f40ef5cca2036b28f99648
MD5 1d724f95c61f1055f0d02c2154bbccd3
SHA1 79116fe99f2b421c52ef64097f0f39b815b20907
SHA512 f2d7b018d1516df1c97cfff5507957c75c6d9bf8e2ce52ae0052706f4ec62f13eba6d7be17e6ad2b693fdd58e1fd091c37f17bd2b948cdcd9b95b4ad428c0113
SSDEEP 12288:GtDjvhNTc/cq4RKZZKfArRuSA80m+/6sXRnfPGp:IjTc/cq4RUZaArbInfPGp
MD5 SHA1 SHA512 SSDEEP

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memory/1640-4-0x0000000002C90000-0x0000000002CF8000-memory.dmp

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memory/1640-11-0x0000000002C90000-0x0000000002CF8000-memory.dmp

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memory/1640-14-0x0000000002C90000-0x0000000002CF8000-memory.dmp

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