badrabbit | f1bbcc5c678d174d858ae089f4494e3ea8bcfc418098d61804a15e437f08aff7

Target

[email protected]
Size

53KB
MD5

6536b10e5a713803d034c607d2de19e3
SHA1

a6000c05f565a36d2250bdab2ce78f505ca624b7
SHA256

775ba68597507cf3c24663f5016d257446abeb66627f20f8f832c0860cad84de
SHA512

61727cf0b150aad6965b4f118f33fd43600fb23dde5f0a3e780cc9998dfcc038b7542bfae9043ce28fb08d613c2a91ff9166f28a2a449d0e3253adc2cb110018

Score

10^/10

badrabbit persistence 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
3592	8587.tmp

Modifies extensions of user files 1 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	[email protected]
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\~~CB = "cb.exe"	[email protected]

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\8587.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
2620	schtasks.exe
2264	schtasks.exe

Modifies Control Panel 21 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\Scrollbar = "232 134 158"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\ActiveBorder = "194 153 93"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\MenuText = "171 18 60"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\WindowText = "233 28 56"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\AppWorkspace = "55 180 93"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\HilightText = "214 47 107"	[email protected]
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\ActiveTitle = "186 64 5"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\InactiveTitle = "150 93 164"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\Menu = "168 65 60"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\GrayText = "131 27 202"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\ButtonText = "130 96 106"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\InactiveTitleText = "190 142 42"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\Window = "56 103 70"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\TitleText = "176 158 111"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\Hilight = "22 5 84"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\ButtonShadow = "105 177 75"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\Background = "193 161 110"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\WindowFrame = "246 242 71"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\InactiveBorder = "187 18 91"	[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Colors\ButtonFace = "1 99 133"	[email protected]

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
996	rundll32.exe
996	rundll32.exe
996	rundll32.exe
996	rundll32.exe
3592	8587.tmp
3592	8587.tmp
3592	8587.tmp
3592	8587.tmp
3592	8587.tmp
3592	8587.tmp
996	rundll32.exe
996	rundll32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	996	rundll32.exe
Token: SeDebugPrivilege	996	rundll32.exe
Token: SeTcbPrivilege	996	rundll32.exe
Token: SeDebugPrivilege	3592	8587.tmp

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2932 wrote to memory of 996	2932	rundll32.exe	79
PID 2932 wrote to memory of 996	2932	rundll32.exe	79
PID 2932 wrote to memory of 996	2932	rundll32.exe	79
PID 996 wrote to memory of 2684	996	rundll32.exe	80
PID 996 wrote to memory of 2684	996	rundll32.exe	80
PID 996 wrote to memory of 2684	996	rundll32.exe	80
PID 2684 wrote to memory of 2384	2684	cmd.exe	82
PID 2684 wrote to memory of 2384	2684	cmd.exe	82
PID 2684 wrote to memory of 2384	2684	cmd.exe	82
PID 996 wrote to memory of 1932	996	rundll32.exe	83
PID 996 wrote to memory of 1932	996	rundll32.exe	83
PID 996 wrote to memory of 1932	996	rundll32.exe	83
PID 996 wrote to memory of 1856	996	rundll32.exe	85
PID 996 wrote to memory of 1856	996	rundll32.exe	85
PID 996 wrote to memory of 1856	996	rundll32.exe	85
PID 1932 wrote to memory of 2620	1932	cmd.exe	86
PID 1932 wrote to memory of 2620	1932	cmd.exe	86
PID 1932 wrote to memory of 2620	1932	cmd.exe	86
PID 996 wrote to memory of 3592	996	rundll32.exe	88
PID 996 wrote to memory of 3592	996	rundll32.exe	88
PID 1856 wrote to memory of 2264	1856	cmd.exe	90
PID 1856 wrote to memory of 2264	1856	cmd.exe	90
PID 1856 wrote to memory of 2264	1856	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\[email protected]
"C:\Users\Admin\AppData\Local\Temp\[email protected]"
1⤵
- Adds Run key to start application
- Modifies Control Panel
PID:512

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\infpub.dat",#2 15
1⤵
- Suspicious use of WriteProcessMemory
PID:2932
- 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:996
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2684
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      PID:2384
- - 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 3759615225 && exit"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1932
  - - 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 3759615225 && exit"
      4⤵
      Creates scheduled task(s)
      PID:2620
- - 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:1856
  - - 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:2264
- - C:\Windows\8587.tmp
    "C:\Windows\8587.tmp" \\.\pipe\{07B98B69-AF3C-4D69-A3A0-5F06F0092ECB}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3592

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/996-3-0x00000000038A0000-0x0000000003908000-memory.dmp

Filesize
416KB

Download