badrabbit | f1bbcc5c678d174d858ae089f4494e3ea8bcfc418098d61804a15e437f08aff7

Target

[email protected]
Size

431KB
MD5

fbbdc39af1139aebba4da004475e8839
SHA1

de5c8d858e6e41da715dca1c019df0bfb92d32c0
SHA256

630325cac09ac3fab908f903e3b00d0dadd5fdaa0875ed8496fcbb97a558d0da
SHA512

74eca8c01de215b33d5ceea1fda3f3bef96b513f58a750dba04b0de36f7ef4f7846a6431d52879ca0d8641bfd504d4721a9a96fa2e18c6888fd67fa77686af87

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
2392	E13E.tmp

Modifies extensions of user files 4 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\AssertImport.tiff	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\CheckpointExpand.tiff	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\EnterUnprotect.tiff	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\UpdateLimit.tiff	rundll32.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\infpub.dat	[email protected]
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\E13E.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
3752	schtasks.exe
1328	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
2392	E13E.tmp
2392	E13E.tmp
2392	E13E.tmp
2392	E13E.tmp
2392	E13E.tmp
2392	E13E.tmp

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3892	rundll32.exe
Token: SeDebugPrivilege	3892	rundll32.exe
Token: SeTcbPrivilege	3892	rundll32.exe
Token: SeDebugPrivilege	2392	E13E.tmp

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 3892	540	[email protected]	75
PID 540 wrote to memory of 3892	540	[email protected]	75
PID 540 wrote to memory of 3892	540	[email protected]	75
PID 3892 wrote to memory of 2856	3892	rundll32.exe	77
PID 3892 wrote to memory of 2856	3892	rundll32.exe	77
PID 3892 wrote to memory of 2856	3892	rundll32.exe	77
PID 2856 wrote to memory of 2796	2856	cmd.exe	79
PID 2856 wrote to memory of 2796	2856	cmd.exe	79
PID 2856 wrote to memory of 2796	2856	cmd.exe	79
PID 3892 wrote to memory of 3468	3892	rundll32.exe	80
PID 3892 wrote to memory of 3468	3892	rundll32.exe	80
PID 3892 wrote to memory of 3468	3892	rundll32.exe	80
PID 3468 wrote to memory of 3752	3468	cmd.exe	82
PID 3468 wrote to memory of 3752	3468	cmd.exe	82
PID 3468 wrote to memory of 3752	3468	cmd.exe	82
PID 3892 wrote to memory of 188	3892	rundll32.exe	83
PID 3892 wrote to memory of 188	3892	rundll32.exe	83
PID 3892 wrote to memory of 188	3892	rundll32.exe	83
PID 3892 wrote to memory of 2392	3892	rundll32.exe	84
PID 3892 wrote to memory of 2392	3892	rundll32.exe	84
PID 188 wrote to memory of 1328	188	cmd.exe	87
PID 188 wrote to memory of 1328	188	cmd.exe	87
PID 188 wrote to memory of 1328	188	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\[email protected]
"C:\Users\Admin\AppData\Local\Temp\[email protected]"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:540
- 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:3892
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2856
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      PID:2796
- - 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 4054326014 && exit"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3468
  - - 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 4054326014 && exit"
      4⤵
      Creates scheduled task(s)
      PID:3752
- - 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 13:07:00
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:188
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 13:07:00
      4⤵
      Creates scheduled task(s)
      PID:1328
- - C:\Windows\E13E.tmp
    "C:\Windows\E13E.tmp" \\.\pipe\{B1C4C9F4-B412-407E-8DEB-036015319B01}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2392

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/3892-4-0x0000000004E10000-0x0000000004E78000-memory.dmp

Filesize
416KB

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