badrabbit | f1bbcc5c678d174d858ae089f4494e3ea8bcfc418098d61804a15e437f08aff7

Target

Endermanch@Birele.exe
Size

116KB
MD5

41789c704a0eecfdd0048b4b4193e752
SHA1

fb1e8385691fa3293b7cbfb9b2656cf09f20e722
SHA256

b2dcfdf9e7b09f2aa5004668370e77982963ace820e7285b2e264a294441da23
SHA512

76391ac85fdc3be75441fcd6e19bed08b807d3946c7281c647f16a3be5388f7be307e6323fac8502430a4a6d800d52a88709592a49011ecc89de4f19102435ea

Score

10^/10

badrabbit bootkit evasion persistence 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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

Endermanch@Birele.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Endermanch@Birele.exe"	Endermanch@Birele.exe

Clears Windows event logs 1 TTPs
evasion ransomware

Indicator Removal on Host
T1070
Executes dropped EXE 1 IoCs

Processes:

907F.tmp

pid process

1868 907F.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

Processes:

LogonUI.exe

description ioc process

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

pid	process
1868	907F.tmp

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

Modifies extensions of user files 2 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

rundll32.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\DismountResize.tiff	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\UnlockLock.tiff	rundll32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Endermanch@Birele.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	Endermanch@Birele.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Endermanch@Birele.exe"	Endermanch@Birele.exe

Drops file in Windows directory 4 IoCs

Processes:

rundll32.exe

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\907F.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

Processes:

schtasks.exeschtasks.exe

pid process

4352 schtasks.exe
4436 schtasks.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3364 taskkill.exe

pid	process
4352	schtasks.exe
4436	schtasks.exe

pid	process
3364	taskkill.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	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\DWM\AccentColor = "4292311040"	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\ColorizationAfterglowBalance = "10"	LogonUI.exe
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\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

rundll32.exe907F.tmp

pid	process
3036	rundll32.exe
3036	rundll32.exe
3036	rundll32.exe
3036	rundll32.exe
1868	907F.tmp
1868	907F.tmp
1868	907F.tmp
1868	907F.tmp
1868	907F.tmp
1868	907F.tmp
3036	rundll32.exe
3036	rundll32.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

Processes:

taskkill.exerundll32.exe907F.tmpwevtutil.exewevtutil.exewevtutil.exewevtutil.exe

description	pid	process
Token: SeDebugPrivilege	3364	taskkill.exe
Token: SeShutdownPrivilege	3036	rundll32.exe
Token: SeDebugPrivilege	3036	rundll32.exe
Token: SeTcbPrivilege	3036	rundll32.exe
Token: SeDebugPrivilege	1868	907F.tmp
Token: SeSecurityPrivilege	2848	wevtutil.exe
Token: SeBackupPrivilege	2848	wevtutil.exe
Token: SeSecurityPrivilege	2128	wevtutil.exe
Token: SeBackupPrivilege	2128	wevtutil.exe
Token: SeSecurityPrivilege	3664	wevtutil.exe
Token: SeBackupPrivilege	3664	wevtutil.exe
Token: SeSecurityPrivilege	1724	wevtutil.exe
Token: SeBackupPrivilege	1724	wevtutil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LogonUI.exe

pid process

200 LogonUI.exe

pid	process
200	LogonUI.exe

Suspicious use of WriteProcessMemory 50 IoCs

Processes:

Endermanch@Birele.exerundll32.exerundll32.execmd.execmd.execmd.execmd.execmd.exe

description	pid	process	target process
PID 4704 wrote to memory of 3364	4704	Endermanch@Birele.exe	taskkill.exe
PID 4704 wrote to memory of 3364	4704	Endermanch@Birele.exe	taskkill.exe
PID 4704 wrote to memory of 3364	4704	Endermanch@Birele.exe	taskkill.exe
PID 4260 wrote to memory of 3036	4260	rundll32.exe	rundll32.exe
PID 4260 wrote to memory of 3036	4260	rundll32.exe	rundll32.exe
PID 4260 wrote to memory of 3036	4260	rundll32.exe	rundll32.exe
PID 3036 wrote to memory of 500	3036	rundll32.exe	cmd.exe
PID 3036 wrote to memory of 500	3036	rundll32.exe	cmd.exe
PID 3036 wrote to memory of 500	3036	rundll32.exe	cmd.exe
PID 500 wrote to memory of 4356	500	cmd.exe	schtasks.exe
PID 500 wrote to memory of 4356	500	cmd.exe	schtasks.exe
PID 500 wrote to memory of 4356	500	cmd.exe	schtasks.exe
PID 3036 wrote to memory of 4044	3036	rundll32.exe	cmd.exe
PID 3036 wrote to memory of 4044	3036	rundll32.exe	cmd.exe
PID 3036 wrote to memory of 4044	3036	rundll32.exe	cmd.exe
PID 4044 wrote to memory of 4352	4044	cmd.exe	schtasks.exe
PID 4044 wrote to memory of 4352	4044	cmd.exe	schtasks.exe
PID 4044 wrote to memory of 4352	4044	cmd.exe	schtasks.exe
PID 3036 wrote to memory of 3904	3036	rundll32.exe	cmd.exe
PID 3036 wrote to memory of 3904	3036	rundll32.exe	cmd.exe
PID 3036 wrote to memory of 3904	3036	rundll32.exe	cmd.exe
PID 3036 wrote to memory of 1868	3036	rundll32.exe	907F.tmp
PID 3036 wrote to memory of 1868	3036	rundll32.exe	907F.tmp
PID 3904 wrote to memory of 4436	3904	cmd.exe	schtasks.exe
PID 3904 wrote to memory of 4436	3904	cmd.exe	schtasks.exe
PID 3904 wrote to memory of 4436	3904	cmd.exe	schtasks.exe
PID 3036 wrote to memory of 2420	3036	rundll32.exe	cmd.exe
PID 3036 wrote to memory of 2420	3036	rundll32.exe	cmd.exe
PID 3036 wrote to memory of 2420	3036	rundll32.exe	cmd.exe
PID 2420 wrote to memory of 2848	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 2848	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 2848	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 2128	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 2128	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 2128	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 3664	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 3664	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 3664	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 1724	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 1724	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 1724	2420	cmd.exe	wevtutil.exe
PID 2420 wrote to memory of 2808	2420	cmd.exe	fsutil.exe
PID 2420 wrote to memory of 2808	2420	cmd.exe	fsutil.exe
PID 2420 wrote to memory of 2808	2420	cmd.exe	fsutil.exe
PID 3036 wrote to memory of 4676	3036	rundll32.exe	cmd.exe
PID 3036 wrote to memory of 4676	3036	rundll32.exe	cmd.exe
PID 3036 wrote to memory of 4676	3036	rundll32.exe	cmd.exe
PID 4676 wrote to memory of 4600	4676	cmd.exe	schtasks.exe
PID 4676 wrote to memory of 4600	4676	cmd.exe	schtasks.exe
PID 4676 wrote to memory of 4600	4676	cmd.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\Endermanch@Birele.exe
"C:\Users\Admin\AppData\Local\Temp\Endermanch@Birele.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4704

C:\Windows\SysWOW64\taskkill.exe
taskkill /F /IM explorer.exe
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3364

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\infpub.dat",#2 15
1⤵
- Suspicious use of WriteProcessMemory
PID:4260

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:3036

C:\Windows\SysWOW64\cmd.exe
/c schtasks /Delete /F /TN rhaegal
3⤵
- Suspicious use of WriteProcessMemory
PID:500

C:\Windows\SysWOW64\schtasks.exe
schtasks /Delete /F /TN rhaegal
4⤵
PID:4356

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 3372482145 && exit"
3⤵
- Suspicious use of WriteProcessMemory
PID:4044

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 3372482145 && exit"
4⤵
- Creates scheduled task(s)
PID:4352

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 07:02:00
3⤵
- Suspicious use of WriteProcessMemory
PID:3904

C:\Windows\SysWOW64\schtasks.exe
schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 07:02:00
4⤵
- Creates scheduled task(s)
PID:4436

C:\Windows\907F.tmp
"C:\Windows\907F.tmp" \\.\pipe\{221083ED-B60A-437D-971C-221A3F961FDB}
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1868

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:2420

C:\Windows\SysWOW64\wevtutil.exe
wevtutil cl Setup
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2848

C:\Windows\SysWOW64\wevtutil.exe
wevtutil cl System
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2128

C:\Windows\SysWOW64\wevtutil.exe
wevtutil cl Security
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3664

C:\Windows\SysWOW64\wevtutil.exe
wevtutil cl Application
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1724

C:\Windows\SysWOW64\fsutil.exe
fsutil usn deletejournal /D C:
4⤵
PID:2808

C:\Windows\SysWOW64\cmd.exe
/c schtasks /Delete /F /TN drogon
3⤵
- Suspicious use of WriteProcessMemory
PID:4676

C:\Windows\SysWOW64\schtasks.exe
schtasks /Delete /F /TN drogon
4⤵
PID:4600

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0 /state0:0xa3ad2855 /state1:0x41c64e6d
1⤵
- Modifies WinLogon to allow AutoLogon
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:200

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Winlogon Helper DLL

T1004

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Indicator Removal on Host

T1070

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

T1490

Data Destruction

T1485

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\907F.tmp
MD5
347ac3b6b791054de3e5720a7144a977

SHA1
413eba3973a15c1a6429d9f170f3e8287f98c21c

SHA256
301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c

SHA512
9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787

Download Submit
C:\Windows\907F.tmp
MD5
347ac3b6b791054de3e5720a7144a977

SHA1
413eba3973a15c1a6429d9f170f3e8287f98c21c

SHA256
301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c

SHA512
9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787

Download Submit
memory/500-3-0x0000000000000000-mapping.dmp

Download
memory/1724-16-0x0000000000000000-mapping.dmp

Download
memory/1868-8-0x0000000000000000-mapping.dmp

Download
memory/2128-14-0x0000000000000000-mapping.dmp

Download
memory/2420-12-0x0000000000000000-mapping.dmp

Download
memory/2808-17-0x0000000000000000-mapping.dmp

Download
memory/2848-13-0x0000000000000000-mapping.dmp

Download
memory/3036-1-0x0000000000000000-mapping.dmp

Download
memory/3036-2-0x0000000003AB0000-0x0000000003B18000-memory.dmp

Filesize
416KB

Download
memory/3364-0-0x0000000000000000-mapping.dmp

Download
memory/3664-15-0x0000000000000000-mapping.dmp

Download
memory/3904-7-0x0000000000000000-mapping.dmp

Download
memory/4044-5-0x0000000000000000-mapping.dmp

Download
memory/4352-6-0x0000000000000000-mapping.dmp

Download
memory/4356-4-0x0000000000000000-mapping.dmp

Download
memory/4436-11-0x0000000000000000-mapping.dmp

Download
memory/4600-19-0x0000000000000000-mapping.dmp

Download
memory/4676-18-0x0000000000000000-mapping.dmp

Download

Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads