badrabbit | f1bbcc5c678d174d858ae089f4494e3ea8bcfc418098d61804a15e437f08aff7

Target

[email protected]
Size

239KB
MD5

2f8f6e90ca211d7ef5f6cf3c995a40e7
SHA1

f8940f280c81273b11a20d4bfb43715155f6e122
SHA256

1f5a26f24a2bfdd301008f0cc51a6c3762f41b926f974c814f1ecaa4cb28e5e6
SHA512

2b38475550edee5519e33bd18fea510ad73345a27c20f6457710498d34e3d0cf05b0f96f32d018e7dc154a6f2232ea7e3145fd0ed5fb498f9e4702a4be1bb9c8

Score

10^/10

badrabbit ransomware

Malware Config

Signatures

BadRabbit
Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.
ransomware badrabbit

Executes dropped EXE 1 IoCs

pid	Process
1176	8C1F.tmp

Modifies extensions of user files 2 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\RequestRegister.tiff	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\WaitRestart.tiff	rundll32.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
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\8C1F.tmp	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

T1053

pid	Process
1532	schtasks.exe
640	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
200	rundll32.exe
200	rundll32.exe
200	rundll32.exe
200	rundll32.exe
1176	8C1F.tmp
1176	8C1F.tmp
1176	8C1F.tmp
1176	8C1F.tmp
1176	8C1F.tmp
1176	8C1F.tmp
200	rundll32.exe
200	rundll32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	200	rundll32.exe
Token: SeDebugPrivilege	200	rundll32.exe
Token: SeTcbPrivilege	200	rundll32.exe
Token: SeDebugPrivilege	1176	8C1F.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3248	[email protected]

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3532 wrote to memory of 200	3532	rundll32.exe	79
PID 3532 wrote to memory of 200	3532	rundll32.exe	79
PID 3532 wrote to memory of 200	3532	rundll32.exe	79
PID 200 wrote to memory of 3692	200	rundll32.exe	80
PID 200 wrote to memory of 3692	200	rundll32.exe	80
PID 200 wrote to memory of 3692	200	rundll32.exe	80
PID 3692 wrote to memory of 1960	3692	cmd.exe	82
PID 3692 wrote to memory of 1960	3692	cmd.exe	82
PID 3692 wrote to memory of 1960	3692	cmd.exe	82
PID 200 wrote to memory of 2852	200	rundll32.exe	83
PID 200 wrote to memory of 2852	200	rundll32.exe	83
PID 200 wrote to memory of 2852	200	rundll32.exe	83
PID 200 wrote to memory of 1864	200	rundll32.exe	85
PID 200 wrote to memory of 1864	200	rundll32.exe	85
PID 200 wrote to memory of 1864	200	rundll32.exe	85
PID 200 wrote to memory of 1176	200	rundll32.exe	88
PID 200 wrote to memory of 1176	200	rundll32.exe	88
PID 2852 wrote to memory of 1532	2852	cmd.exe	87
PID 2852 wrote to memory of 1532	2852	cmd.exe	87
PID 2852 wrote to memory of 1532	2852	cmd.exe	87
PID 1864 wrote to memory of 640	1864	cmd.exe	90
PID 1864 wrote to memory of 640	1864	cmd.exe	90
PID 1864 wrote to memory of 640	1864	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\[email protected]
"C:\Users\Admin\AppData\Local\Temp\[email protected]"
1⤵
- Suspicious use of FindShellTrayWindow
PID:3248

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\infpub.dat",#2 15
1⤵
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Windows\SysWOW64\rundll32.exe
  C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
  2⤵
  - Modifies extensions of user files
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:200
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3692
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      PID:1960
- - 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 3508456074 && exit"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2852
  - - 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 3508456074 && exit"
      4⤵
      Creates scheduled task(s)
      PID:1532
- - 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 13:02:00
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1864
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 13:02:00
      4⤵
      Creates scheduled task(s)
      PID:640
- - C:\Windows\8C1F.tmp
    "C:\Windows\8C1F.tmp" \\.\pipe\{2F8DD38A-9176-4BFD-82CB-13E15DC514E4}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1176

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/200-4-0x0000000000810000-0x0000000000878000-memory.dmp

Filesize
416KB

Download
memory/3248-2-0x0000000000570000-0x0000000000571000-memory.dmp

Filesize
4KB

Download