badrabbit | 022728f678d8dcc6cba20147595ed4099e9c98be0582c0f67518d5664e3b8523

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-uk
resource tags

arch:x64arch:x86image:win10v2004-20240226-uklocale:uk-uaos:windows10-2004-x64systemwindows
submitted
03/03/2024, 13:53

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General

Target
Ransomware/BadRabbit.exe
Size 431KB
Sample240303-q67tescc27
SHA256 630325cac09ac3fab908f903e3b00d0dadd5fdaa0875ed8496fcbb97a558d0da
MD5 fbbdc39af1139aebba4da004475e8839
SHA1 de5c8d858e6e41da715dca1c019df0bfb92d32c0
SHA512 74eca8c01de215b33d5ceea1fda3f3bef96b513f58a750dba04b0de36f7ef4f7846a6431d52879ca0d8641bfd504d4721a9a96fa2e18c6888fd67fa77686af87
SSDEEP 12288:BHNTywFAvN86pLbqWRKHZKfErrZJyZ0yqsGO3XR63:vT56NbqWRwZaEr3yt2O3XR63
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

badrabbit mimikatz ransomware

Malware Config

Signatures

BadRabbit
Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.
ransomware badrabbit
Mimikatz
mimikatz is an open source tool to dump credentials on Windows.
mimikatz

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

resource	yara_rule
behavioral4/files/0x000b00000002320b-20.dat	mimikatz

Executes dropped EXE 1 IoCs

pid	Process
3740	471B.tmp

Loads dropped DLL 1 IoCs

pid	Process
3620	rundll32.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\471B.tmp	rundll32.exe
File created	C:\Windows\infpub.dat	BadRabbit.exe
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

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

pid	Process
1964	schtasks.exe
248	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3620	rundll32.exe
3620	rundll32.exe
3620	rundll32.exe
3620	rundll32.exe
3740	471B.tmp
3740	471B.tmp
3740	471B.tmp
3740	471B.tmp
3740	471B.tmp
3740	471B.tmp

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3620	rundll32.exe
Token: SeDebugPrivilege	3620	rundll32.exe
Token: SeTcbPrivilege	3620	rundll32.exe
Token: SeDebugPrivilege	3740	471B.tmp

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3184 wrote to memory of 3620	3184	BadRabbit.exe	88
PID 3184 wrote to memory of 3620	3184	BadRabbit.exe	88
PID 3184 wrote to memory of 3620	3184	BadRabbit.exe	88
PID 3620 wrote to memory of 772	3620	rundll32.exe	89
PID 3620 wrote to memory of 772	3620	rundll32.exe	89
PID 3620 wrote to memory of 772	3620	rundll32.exe	89
PID 772 wrote to memory of 1980	772	cmd.exe	92
PID 772 wrote to memory of 1980	772	cmd.exe	92
PID 772 wrote to memory of 1980	772	cmd.exe	92
PID 3620 wrote to memory of 4044	3620	rundll32.exe	93
PID 3620 wrote to memory of 4044	3620	rundll32.exe	93
PID 3620 wrote to memory of 4044	3620	rundll32.exe	93
PID 3620 wrote to memory of 2876	3620	rundll32.exe	95
PID 3620 wrote to memory of 2876	3620	rundll32.exe	95
PID 3620 wrote to memory of 2876	3620	rundll32.exe	95
PID 4044 wrote to memory of 1964	4044	cmd.exe	96
PID 4044 wrote to memory of 1964	4044	cmd.exe	96
PID 4044 wrote to memory of 1964	4044	cmd.exe	96
PID 3620 wrote to memory of 3740	3620	rundll32.exe	98
PID 3620 wrote to memory of 3740	3620	rundll32.exe	98
PID 2876 wrote to memory of 248	2876	cmd.exe	100
PID 2876 wrote to memory of 248	2876	cmd.exe	100
PID 2876 wrote to memory of 248	2876	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\Ransomware\BadRabbit.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware\BadRabbit.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3184
- C:\Windows\SysWOW64\rundll32.exe
  C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
  2⤵
  - Loads dropped DLL
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3620
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:772
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      PID:1980
- - 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 1416508467 && 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 1416508467 && exit"
      4⤵
      Creates scheduled task(s)
      PID:1964
- - 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 14:13:00
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2876
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 14:13:00
      4⤵
      Creates scheduled task(s)
      PID:248
- - C:\Windows\471B.tmp
    "C:\Windows\471B.tmp" \\.\pipe\{643E2DF7-2DC4-4677-BABE-493F2479E11A}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

471B.tmp

Path C:\Windows\471B.tmp
Size 60KB
SHA256 301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c
MD5 347ac3b6b791054de3e5720a7144a977
SHA1 413eba3973a15c1a6429d9f170f3e8287f98c21c
SHA512 9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787
SSDEEP 1536:QeRCKjey4TTGLeBYEUW1SIUDoCB449rHUV:KKjey4TTmeBZUGSIUDoCq49oV
MD5 SHA1 SHA512 SSDEEP

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infpub.dat

Path C:\Windows\infpub.dat
Size 401KB
SHA256 579fd8a0385482fb4c789561a30b09f25671e86422f40ef5cca2036b28f99648
MD5 1d724f95c61f1055f0d02c2154bbccd3
SHA1 79116fe99f2b421c52ef64097f0f39b815b20907
SHA512 f2d7b018d1516df1c97cfff5507957c75c6d9bf8e2ce52ae0052706f4ec62f13eba6d7be17e6ad2b693fdd58e1fd091c37f17bd2b948cdcd9b95b4ad428c0113
SSDEEP 12288:GtDjvhNTc/cq4RKZZKfArRuSA80m+/6sXRnfPGp:IjTc/cq4RUZaArbInfPGp
MD5 SHA1 SHA512 SSDEEP

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memory/3620-3-0x0000000002D70000-0x0000000002DD8000-memory.dmp

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memory/3620-11-0x0000000002D70000-0x0000000002DD8000-memory.dmp

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memory/3620-14-0x0000000002D70000-0x0000000002DD8000-memory.dmp

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