badrabbit | f1bbcc5c678d174d858ae089f4494e3ea8bcfc418098d61804a15e437f08aff7

Target

[email protected]
Size

431KB
MD5

fbbdc39af1139aebba4da004475e8839
SHA1

de5c8d858e6e41da715dca1c019df0bfb92d32c0
SHA256

630325cac09ac3fab908f903e3b00d0dadd5fdaa0875ed8496fcbb97a558d0da
SHA512

74eca8c01de215b33d5ceea1fda3f3bef96b513f58a750dba04b0de36f7ef4f7846a6431d52879ca0d8641bfd504d4721a9a96fa2e18c6888fd67fa77686af87

Score

10^/10

badrabbit bootkit evasion ransomware

Malware Config

Signatures

BadRabbit
Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.
ransomware badrabbit
Deletes NTFS Change Journal 2 TTPs
The USN change journal is a persistent log of all changes made to local files used by Windows Server systems.
ransomware

Inhibit System Recovery
T1490

Data Destruction
T1485
Clears Windows event logs 1 TTPs
evasion ransomware

Indicator Removal on Host
T1070

Blacklisted process makes network request 2 IoCs

flow	pid	Process
295	2664	rundll32.exe
308	2664	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
1312	9B0D.tmp

Modifies WinLogon to allow AutoLogon 2 TTPs 1 IoCs

Enables rebooting of the machine without requiring login credentials.

ransomware bootkit

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\AutoLogonChecked	LogonUI.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\dispci.exe	rundll32.exe
File opened for modification	C:\Windows\9B0D.tmp	rundll32.exe
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

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
1124	schtasks.exe
2728	schtasks.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2664	rundll32.exe
2664	rundll32.exe
2664	rundll32.exe
2664	rundll32.exe
1312	9B0D.tmp
1312	9B0D.tmp
1312	9B0D.tmp
1312	9B0D.tmp
1312	9B0D.tmp
1312	9B0D.tmp

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2664	rundll32.exe
Token: SeDebugPrivilege	2664	rundll32.exe
Token: SeTcbPrivilege	2664	rundll32.exe
Token: SeDebugPrivilege	1312	9B0D.tmp
Token: SeSecurityPrivilege	3320	wevtutil.exe
Token: SeBackupPrivilege	3320	wevtutil.exe
Token: SeSecurityPrivilege	1404	wevtutil.exe
Token: SeBackupPrivilege	1404	wevtutil.exe
Token: SeSecurityPrivilege	3100	wevtutil.exe
Token: SeBackupPrivilege	3100	wevtutil.exe
Token: SeSecurityPrivilege	3880	wevtutil.exe
Token: SeBackupPrivilege	3880	wevtutil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3508	LogonUI.exe

Suspicious use of WriteProcessMemory 47 IoCs

description	pid	Process	procid_target
PID 1152 wrote to memory of 2664	1152	[email protected]	76
PID 1152 wrote to memory of 2664	1152	[email protected]	76
PID 1152 wrote to memory of 2664	1152	[email protected]	76
PID 2664 wrote to memory of 1028	2664	rundll32.exe	78
PID 2664 wrote to memory of 1028	2664	rundll32.exe	78
PID 2664 wrote to memory of 1028	2664	rundll32.exe	78
PID 1028 wrote to memory of 3412	1028	cmd.exe	80
PID 1028 wrote to memory of 3412	1028	cmd.exe	80
PID 1028 wrote to memory of 3412	1028	cmd.exe	80
PID 2664 wrote to memory of 1956	2664	rundll32.exe	81
PID 2664 wrote to memory of 1956	2664	rundll32.exe	81
PID 2664 wrote to memory of 1956	2664	rundll32.exe	81
PID 1956 wrote to memory of 2728	1956	cmd.exe	83
PID 1956 wrote to memory of 2728	1956	cmd.exe	83
PID 1956 wrote to memory of 2728	1956	cmd.exe	83
PID 2664 wrote to memory of 4076	2664	rundll32.exe	84
PID 2664 wrote to memory of 4076	2664	rundll32.exe	84
PID 2664 wrote to memory of 4076	2664	rundll32.exe	84
PID 2664 wrote to memory of 1312	2664	rundll32.exe	85
PID 2664 wrote to memory of 1312	2664	rundll32.exe	85
PID 4076 wrote to memory of 1124	4076	cmd.exe	88
PID 4076 wrote to memory of 1124	4076	cmd.exe	88
PID 4076 wrote to memory of 1124	4076	cmd.exe	88
PID 2664 wrote to memory of 4032	2664	rundll32.exe	92
PID 2664 wrote to memory of 4032	2664	rundll32.exe	92
PID 2664 wrote to memory of 4032	2664	rundll32.exe	92
PID 4032 wrote to memory of 3320	4032	cmd.exe	94
PID 4032 wrote to memory of 3320	4032	cmd.exe	94
PID 4032 wrote to memory of 3320	4032	cmd.exe	94
PID 4032 wrote to memory of 1404	4032	cmd.exe	95
PID 4032 wrote to memory of 1404	4032	cmd.exe	95
PID 4032 wrote to memory of 1404	4032	cmd.exe	95
PID 4032 wrote to memory of 3100	4032	cmd.exe	96
PID 4032 wrote to memory of 3100	4032	cmd.exe	96
PID 4032 wrote to memory of 3100	4032	cmd.exe	96
PID 4032 wrote to memory of 3880	4032	cmd.exe	97
PID 4032 wrote to memory of 3880	4032	cmd.exe	97
PID 4032 wrote to memory of 3880	4032	cmd.exe	97
PID 4032 wrote to memory of 4040	4032	cmd.exe	98
PID 4032 wrote to memory of 4040	4032	cmd.exe	98
PID 4032 wrote to memory of 4040	4032	cmd.exe	98
PID 2664 wrote to memory of 3756	2664	rundll32.exe	99
PID 2664 wrote to memory of 3756	2664	rundll32.exe	99
PID 2664 wrote to memory of 3756	2664	rundll32.exe	99
PID 3756 wrote to memory of 696	3756	cmd.exe	102
PID 3756 wrote to memory of 696	3756	cmd.exe	102
PID 3756 wrote to memory of 696	3756	cmd.exe	102

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:1152
- C:\Windows\SysWOW64\rundll32.exe
  C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
  2⤵
  - Blacklisted process makes network request
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2664
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1028
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      PID:3412
- - 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 3648423931 && exit"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1956
  - - 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 3648423931 && exit"
      4⤵
      Creates scheduled task(s)
      PID:2728
- - 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 06:59:00
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4076
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 06:59:00
      4⤵
      Creates scheduled task(s)
      PID:1124
- - C:\Windows\9B0D.tmp
    "C:\Windows\9B0D.tmp" \\.\pipe\{38E23F7D-634F-42C4-845E-BD602073FE9F}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1312
- - C:\Windows\SysWOW64\cmd.exe
    /c wevtutil cl Setup & wevtutil cl System & wevtutil cl Security & wevtutil cl Application & fsutil usn deletejournal /D C:
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4032
  - - C:\Windows\SysWOW64\wevtutil.exe
      wevtutil cl Setup
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:3320
  - - C:\Windows\SysWOW64\wevtutil.exe
      wevtutil cl System
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1404
  - - C:\Windows\SysWOW64\wevtutil.exe
      wevtutil cl Security
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:3100
  - - C:\Windows\SysWOW64\wevtutil.exe
      wevtutil cl Application
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:3880
  - - C:\Windows\SysWOW64\fsutil.exe
      fsutil usn deletejournal /D C:
      4⤵
      PID:4040
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN drogon
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3756
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN drogon
      4⤵
      PID:696

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0 /state0:0xa3ad4055 /state1:0x41c64e6d
1⤵
- Modifies WinLogon to allow AutoLogon
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3508

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Winlogon Helper DLL

T1004

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Indicator Removal on Host

T1070

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Data Destruction

T1485

Inhibit System Recovery

T1490

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Downloads

memory/2664-2-0x0000000004930000-0x0000000004998000-memory.dmp

Filesize
416KB

Download

Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads