badrabbit | 2a45e44be359fba4c85591e7b13d1ec772ed181adc41254d8b00d31b2d15878e

Reason

Machine shutdown: "{\"level\":\"info\",\"time\":\"2024-04-25T18:32:03Z\",\"message\":\"Dirty snapshot: /var/lib/sandbox/hatchvm/win10v2004-20240412-en/instance_5-dirty.qcow2\"}"

General

Target

Bad Rabit.exe
Size

431KB
MD5

fbbdc39af1139aebba4da004475e8839
SHA1

de5c8d858e6e41da715dca1c019df0bfb92d32c0
SHA256

630325cac09ac3fab908f903e3b00d0dadd5fdaa0875ed8496fcbb97a558d0da
SHA512

74eca8c01de215b33d5ceea1fda3f3bef96b513f58a750dba04b0de36f7ef4f7846a6431d52879ca0d8641bfd504d4721a9a96fa2e18c6888fd67fa77686af87
SSDEEP

12288:BHNTywFAvN86pLbqWRKHZKfErrZJyZ0yqsGO3XR63:vT56NbqWRwZaEr3yt2O3XR63

Score

10^/10

badrabbit mimikatz 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 1 IoCs
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

Processes:

fsutil.exe

pid process

492 fsutil.exe
Mimikatz
mimikatz is an open source tool to dump credentials on Windows.
mimikatz
Clears Windows event logs 1 TTPs 4 IoCs
evasion ransomware

Indicator Removal
T1070

Processes:

wevtutil.exewevtutil.exewevtutil.exewevtutil.exe

pid process

1660 wevtutil.exe
4564 wevtutil.exe
5032 wevtutil.exe
4020 wevtutil.exe

pid	process
492	fsutil.exe

pid	process
1660	wevtutil.exe
4564	wevtutil.exe
5032	wevtutil.exe
4020	wevtutil.exe

mimikatz is an open source tool to dump credentials on Windows 1 IoCs

Processes:

resource	yara_rule
C:\Windows\39EC.tmp	mimikatz

Blocklisted process makes network request 8 IoCs

Processes:

rundll32.exe

flow	pid	process
397	3684	rundll32.exe
433	3684	rundll32.exe
475	3684	rundll32.exe
517	3684	rundll32.exe
550	3684	rundll32.exe
577	3684	rundll32.exe
613	3684	rundll32.exe
656	3684	rundll32.exe

Executes dropped EXE 1 IoCs

Processes:

39EC.tmp

pid process

4984 39EC.tmp
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3684 rundll32.exe

pid	process
4984	39EC.tmp

Drops file in Windows directory 5 IoCs

Processes:

rundll32.exeBad Rabit.exe

description	ioc	process
File created	C:\Windows\cscc.dat	rundll32.exe
File created	C:\Windows\dispci.exe	rundll32.exe
File opened for modification	C:\Windows\39EC.tmp	rundll32.exe
File created	C:\Windows\infpub.dat	Bad Rabit.exe
File opened for modification	C:\Windows\infpub.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/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

4932 schtasks.exe
1552 schtasks.exe

pid	process
4932	schtasks.exe
1552	schtasks.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	process
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\CurrentVersion\Themes\History\AutoColor = "0"	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	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
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\ColorizationColorBalance = "89"	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 = "134"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

rundll32.exe39EC.tmp

pid	process
3684	rundll32.exe
3684	rundll32.exe
3684	rundll32.exe
3684	rundll32.exe
4984	39EC.tmp
4984	39EC.tmp
4984	39EC.tmp
4984	39EC.tmp
4984	39EC.tmp
4984	39EC.tmp
4984	39EC.tmp

Suspicious use of AdjustPrivilegeToken 12 IoCs

Processes:

rundll32.exe39EC.tmpwevtutil.exewevtutil.exewevtutil.exewevtutil.exe

description	pid	process
Token: SeShutdownPrivilege	3684	rundll32.exe
Token: SeDebugPrivilege	3684	rundll32.exe
Token: SeTcbPrivilege	3684	rundll32.exe
Token: SeDebugPrivilege	4984	39EC.tmp
Token: SeSecurityPrivilege	4020	wevtutil.exe
Token: SeBackupPrivilege	4020	wevtutil.exe
Token: SeSecurityPrivilege	1660	wevtutil.exe
Token: SeBackupPrivilege	1660	wevtutil.exe
Token: SeSecurityPrivilege	4564	wevtutil.exe
Token: SeBackupPrivilege	4564	wevtutil.exe
Token: SeSecurityPrivilege	5032	wevtutil.exe
Token: SeBackupPrivilege	5032	wevtutil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LogonUI.exe

pid process

4356 LogonUI.exe

pid	process
4356	LogonUI.exe

Suspicious use of WriteProcessMemory 47 IoCs

Processes:

Bad Rabit.exerundll32.execmd.execmd.execmd.execmd.execmd.exe

description	pid	process	target process
PID 1116 wrote to memory of 3684	1116	Bad Rabit.exe	rundll32.exe
PID 1116 wrote to memory of 3684	1116	Bad Rabit.exe	rundll32.exe
PID 1116 wrote to memory of 3684	1116	Bad Rabit.exe	rundll32.exe
PID 3684 wrote to memory of 712	3684	rundll32.exe	cmd.exe
PID 3684 wrote to memory of 712	3684	rundll32.exe	cmd.exe
PID 3684 wrote to memory of 712	3684	rundll32.exe	cmd.exe
PID 712 wrote to memory of 5032	712	cmd.exe	schtasks.exe
PID 712 wrote to memory of 5032	712	cmd.exe	schtasks.exe
PID 712 wrote to memory of 5032	712	cmd.exe	schtasks.exe
PID 3684 wrote to memory of 4684	3684	rundll32.exe	cmd.exe
PID 3684 wrote to memory of 4684	3684	rundll32.exe	cmd.exe
PID 3684 wrote to memory of 4684	3684	rundll32.exe	cmd.exe
PID 4684 wrote to memory of 4932	4684	cmd.exe	schtasks.exe
PID 4684 wrote to memory of 4932	4684	cmd.exe	schtasks.exe
PID 4684 wrote to memory of 4932	4684	cmd.exe	schtasks.exe
PID 3684 wrote to memory of 548	3684	rundll32.exe	cmd.exe
PID 3684 wrote to memory of 548	3684	rundll32.exe	cmd.exe
PID 3684 wrote to memory of 548	3684	rundll32.exe	cmd.exe
PID 3684 wrote to memory of 4984	3684	rundll32.exe	39EC.tmp
PID 3684 wrote to memory of 4984	3684	rundll32.exe	39EC.tmp
PID 548 wrote to memory of 1552	548	cmd.exe	schtasks.exe
PID 548 wrote to memory of 1552	548	cmd.exe	schtasks.exe
PID 548 wrote to memory of 1552	548	cmd.exe	schtasks.exe
PID 3684 wrote to memory of 1544	3684	rundll32.exe	cmd.exe
PID 3684 wrote to memory of 1544	3684	rundll32.exe	cmd.exe
PID 3684 wrote to memory of 1544	3684	rundll32.exe	cmd.exe
PID 1544 wrote to memory of 4020	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 4020	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 4020	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 1660	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 1660	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 1660	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 4564	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 4564	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 4564	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 5032	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 5032	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 5032	1544	cmd.exe	wevtutil.exe
PID 1544 wrote to memory of 492	1544	cmd.exe	fsutil.exe
PID 1544 wrote to memory of 492	1544	cmd.exe	fsutil.exe
PID 1544 wrote to memory of 492	1544	cmd.exe	fsutil.exe
PID 3684 wrote to memory of 4008	3684	rundll32.exe	cmd.exe
PID 3684 wrote to memory of 4008	3684	rundll32.exe	cmd.exe
PID 3684 wrote to memory of 4008	3684	rundll32.exe	cmd.exe
PID 4008 wrote to memory of 2212	4008	cmd.exe	schtasks.exe
PID 4008 wrote to memory of 2212	4008	cmd.exe	schtasks.exe
PID 4008 wrote to memory of 2212	4008	cmd.exe	schtasks.exe

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:1116
- C:\Windows\SysWOW64\rundll32.exe
  C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3684
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:712
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      PID:5032
- - 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 2500336310 && exit"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4684
  - - 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 2500336310 && exit"
      4⤵
      Creates scheduled task(s)
      PID:4932
- - 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 18:34:00
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:548
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 18:34:00
      4⤵
      Creates scheduled task(s)
      PID:1552
- - C:\Windows\39EC.tmp
    "C:\Windows\39EC.tmp" \\.\pipe\{C8BB4976-3AC0-47CC-8F6E-2FBB68158E2D}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4984
- - 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:1544
  - - C:\Windows\SysWOW64\wevtutil.exe
      wevtutil cl Setup
      4⤵
      Clears Windows event logs
      Suspicious use of AdjustPrivilegeToken
      PID:4020
  - - C:\Windows\SysWOW64\wevtutil.exe
      wevtutil cl System
      4⤵
      Clears Windows event logs
      Suspicious use of AdjustPrivilegeToken
      PID:1660
  - - C:\Windows\SysWOW64\wevtutil.exe
      wevtutil cl Security
      4⤵
      Clears Windows event logs
      Suspicious use of AdjustPrivilegeToken
      PID:4564
  - - C:\Windows\SysWOW64\wevtutil.exe
      wevtutil cl Application
      4⤵
      Clears Windows event logs
      Suspicious use of AdjustPrivilegeToken
      PID:5032
  - - C:\Windows\SysWOW64\fsutil.exe
      fsutil usn deletejournal /D C:
      4⤵
      Deletes NTFS Change Journal
      PID:492
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN drogon
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4008
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN drogon
      4⤵
      PID:2212

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3891055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Indicator Removal

1

T1070

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Data Destruction

1

T1485

Inhibit System Recovery

1

T1490

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Downloads

C:\Windows\39EC.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/3684-3-0x0000000000C90000-0x0000000000CF8000-memory.dmp

Filesize
416KB

Download
memory/3684-11-0x0000000000C90000-0x0000000000CF8000-memory.dmp

Filesize
416KB

Download
memory/3684-14-0x0000000000C90000-0x0000000000CF8000-memory.dmp

Filesize
416KB

Download

Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads