badrabbit | 2a45e44be359fba4c85591e7b13d1ec772ed181adc41254d8b00d31b2d15878e

max time kernel
149s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
25-04-2024 17:47

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General

Target

Bad Rabit.exe
Size

431KB
MD5

fbbdc39af1139aebba4da004475e8839
SHA1

de5c8d858e6e41da715dca1c019df0bfb92d32c0
SHA256

630325cac09ac3fab908f903e3b00d0dadd5fdaa0875ed8496fcbb97a558d0da
SHA512

74eca8c01de215b33d5ceea1fda3f3bef96b513f58a750dba04b0de36f7ef4f7846a6431d52879ca0d8641bfd504d4721a9a96fa2e18c6888fd67fa77686af87
SSDEEP

12288:BHNTywFAvN86pLbqWRKHZKfErrZJyZ0yqsGO3XR63:vT56NbqWRwZaEr3yt2O3XR63

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
behavioral6/files/0x000100000002a9e9-21.dat	mimikatz

Executes dropped EXE 1 IoCs

pid	Process
896	5803.tmp

Loads dropped DLL 1 IoCs

pid	Process
2924	rundll32.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\5803.tmp	rundll32.exe
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

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
3708	schtasks.exe
640	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2924	rundll32.exe
2924	rundll32.exe
2924	rundll32.exe
2924	rundll32.exe
896	5803.tmp
896	5803.tmp
896	5803.tmp
896	5803.tmp
896	5803.tmp
896	5803.tmp

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2924	rundll32.exe
Token: SeDebugPrivilege	2924	rundll32.exe
Token: SeTcbPrivilege	2924	rundll32.exe
Token: SeDebugPrivilege	896	5803.tmp

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 2924	2992	Bad Rabit.exe	82
PID 2992 wrote to memory of 2924	2992	Bad Rabit.exe	82
PID 2992 wrote to memory of 2924	2992	Bad Rabit.exe	82
PID 2924 wrote to memory of 1060	2924	rundll32.exe	83
PID 2924 wrote to memory of 1060	2924	rundll32.exe	83
PID 2924 wrote to memory of 1060	2924	rundll32.exe	83
PID 1060 wrote to memory of 5108	1060	cmd.exe	85
PID 1060 wrote to memory of 5108	1060	cmd.exe	85
PID 1060 wrote to memory of 5108	1060	cmd.exe	85
PID 2924 wrote to memory of 1432	2924	rundll32.exe	88
PID 2924 wrote to memory of 1432	2924	rundll32.exe	88
PID 2924 wrote to memory of 1432	2924	rundll32.exe	88
PID 2924 wrote to memory of 1720	2924	rundll32.exe	90
PID 2924 wrote to memory of 1720	2924	rundll32.exe	90
PID 2924 wrote to memory of 1720	2924	rundll32.exe	90
PID 2924 wrote to memory of 896	2924	rundll32.exe	92
PID 2924 wrote to memory of 896	2924	rundll32.exe	92
PID 1432 wrote to memory of 3708	1432	cmd.exe	94
PID 1432 wrote to memory of 3708	1432	cmd.exe	94
PID 1432 wrote to memory of 3708	1432	cmd.exe	94
PID 1720 wrote to memory of 640	1720	cmd.exe	95
PID 1720 wrote to memory of 640	1720	cmd.exe	95
PID 1720 wrote to memory of 640	1720	cmd.exe	95

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:2992
- 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:2924
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1060
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      PID:5108
- - 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 2945404888 && exit"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1432
  - - 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 2945404888 && exit"
      4⤵
      Creates scheduled task(s)
      PID:3708
- - 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 18:05:00
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1720
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 18:05:00
      4⤵
      Creates scheduled task(s)
      PID:640
- - C:\Windows\5803.tmp
    "C:\Windows\5803.tmp" \\.\pipe\{6652E69C-249E-48D8-ADF4-DBFE390021ED}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:896

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\5803.tmp

Filesize
60KB

MD5
347ac3b6b791054de3e5720a7144a977

SHA1
413eba3973a15c1a6429d9f170f3e8287f98c21c

SHA256
301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c

SHA512
9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787

Download Submit
C:\Windows\infpub.dat

Filesize
401KB

MD5
1d724f95c61f1055f0d02c2154bbccd3

SHA1
79116fe99f2b421c52ef64097f0f39b815b20907

SHA256
579fd8a0385482fb4c789561a30b09f25671e86422f40ef5cca2036b28f99648

SHA512
f2d7b018d1516df1c97cfff5507957c75c6d9bf8e2ce52ae0052706f4ec62f13eba6d7be17e6ad2b693fdd58e1fd091c37f17bd2b948cdcd9b95b4ad428c0113

Download Submit
memory/2924-3-0x00000000029C0000-0x0000000002A28000-memory.dmp

Filesize
416KB

Download
memory/2924-11-0x00000000029C0000-0x0000000002A28000-memory.dmp

Filesize
416KB

Download
memory/2924-14-0x00000000029C0000-0x0000000002A28000-memory.dmp

Filesize
416KB

Download