badrabbit | 3b04f8d10e7847cffa2e610e299733af239ea28e8709659a992965dce1e8b9c4

General

Target
2024-02-01_5d5ae8c9b7a2af62fcdf385a203bf7b5_bad-rabbit.exe
Size 431KB
Sample240201-k2g5baafaq
SHA256 3b04f8d10e7847cffa2e610e299733af239ea28e8709659a992965dce1e8b9c4
MD5 5d5ae8c9b7a2af62fcdf385a203bf7b5
SHA1 b1863b977696682532ac3c3f4345ee52888558fa
SHA512 1e50c9101739ddd95ed28bc3946da1e5a720f20a83a6267eff2cc12d2032a3f1728b9ec93a89ef44b0bd12090884d3fbf702b2324f89b8988c25dcea3b5d93a7
SSDEEP 12288:BHNTywFAvN86pLbqWRKHZKfErrZJyZ0yqsGO3XR6V:vT56NbqWRwZaEr3yt2O3XR6V
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

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

Detects executables containing anti-forensic artifacts of deleting USN change journal. Observed in ransomware 4 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023118-1.dat	INDICATOR_SUSPICIOUS_USNDeleteJournal
behavioral2/memory/4920-3-0x0000000002BF0000-0x0000000002C58000-memory.dmp	INDICATOR_SUSPICIOUS_USNDeleteJournal
behavioral2/memory/4920-11-0x0000000002BF0000-0x0000000002C58000-memory.dmp	INDICATOR_SUSPICIOUS_USNDeleteJournal
behavioral2/memory/4920-14-0x0000000002BF0000-0x0000000002C58000-memory.dmp	INDICATOR_SUSPICIOUS_USNDeleteJournal

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

resource	yara_rule
behavioral2/files/0x000600000002311e-20.dat	mimikatz

Executes dropped EXE 1 IoCs

pid	Process
2436	F4D.tmp

Loads dropped DLL 1 IoCs

pid	Process
4920	rundll32.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\F4D.tmp	rundll32.exe
File created	C:\Windows\infpub.dat	2024-02-01_5d5ae8c9b7a2af62fcdf385a203bf7b5_bad-rabbit.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
1412	schtasks.exe
4292	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4920	rundll32.exe
4920	rundll32.exe
4920	rundll32.exe
4920	rundll32.exe
2436	F4D.tmp
2436	F4D.tmp
2436	F4D.tmp
2436	F4D.tmp
2436	F4D.tmp
2436	F4D.tmp

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4920	rundll32.exe
Token: SeDebugPrivilege	4920	rundll32.exe
Token: SeTcbPrivilege	4920	rundll32.exe
Token: SeDebugPrivilege	2436	F4D.tmp

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 4920	1596	2024-02-01_5d5ae8c9b7a2af62fcdf385a203bf7b5_bad-rabbit.exe	85
PID 1596 wrote to memory of 4920	1596	2024-02-01_5d5ae8c9b7a2af62fcdf385a203bf7b5_bad-rabbit.exe	85
PID 1596 wrote to memory of 4920	1596	2024-02-01_5d5ae8c9b7a2af62fcdf385a203bf7b5_bad-rabbit.exe	85
PID 4920 wrote to memory of 3464	4920	rundll32.exe	86
PID 4920 wrote to memory of 3464	4920	rundll32.exe	86
PID 4920 wrote to memory of 3464	4920	rundll32.exe	86
PID 3464 wrote to memory of 1256	3464	cmd.exe	88
PID 3464 wrote to memory of 1256	3464	cmd.exe	88
PID 3464 wrote to memory of 1256	3464	cmd.exe	88
PID 4920 wrote to memory of 440	4920	rundll32.exe	89
PID 4920 wrote to memory of 440	4920	rundll32.exe	89
PID 4920 wrote to memory of 440	4920	rundll32.exe	89
PID 440 wrote to memory of 1412	440	cmd.exe	91
PID 440 wrote to memory of 1412	440	cmd.exe	91
PID 440 wrote to memory of 1412	440	cmd.exe	91
PID 4920 wrote to memory of 1372	4920	rundll32.exe	92
PID 4920 wrote to memory of 1372	4920	rundll32.exe	92
PID 4920 wrote to memory of 1372	4920	rundll32.exe	92
PID 4920 wrote to memory of 2436	4920	rundll32.exe	94
PID 4920 wrote to memory of 2436	4920	rundll32.exe	94
PID 1372 wrote to memory of 4292	1372	cmd.exe	96
PID 1372 wrote to memory of 4292	1372	cmd.exe	96
PID 1372 wrote to memory of 4292	1372	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-02-01_5d5ae8c9b7a2af62fcdf385a203bf7b5_bad-rabbit.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_5d5ae8c9b7a2af62fcdf385a203bf7b5_bad-rabbit.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1596
- 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:4920
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3464
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      PID:1256
- - 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 846266592 && exit"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:440
  - - 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 846266592 && exit"
      4⤵
      Creates scheduled task(s)
      PID:1412
- - 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 09:23:00
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1372
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 09:23:00
      4⤵
      Creates scheduled task(s)
      PID:4292
- - C:\Windows\F4D.tmp
    "C:\Windows\F4D.tmp" \\.\pipe\{D3F0B515-EFF5-4CDA-826E-F56267E81122}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2436

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

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

F4D.tmp

Path C:\Windows\F4D.tmp
Size 60KB
SHA256 301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c
MD5 347ac3b6b791054de3e5720a7144a977
SHA1 413eba3973a15c1a6429d9f170f3e8287f98c21c
SHA512 9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787
SSDEEP 1536:QeRCKjey4TTGLeBYEUW1SIUDoCB449rHUV:KKjey4TTmeBZUGSIUDoCq49oV
MD5 SHA1 SHA512 SSDEEP

Submit Download

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

Submit Download

memory/4920-3-0x0000000002BF0000-0x0000000002C58000-memory.dmp

Download

memory/4920-11-0x0000000002BF0000-0x0000000002C58000-memory.dmp

Download

memory/4920-14-0x0000000002BF0000-0x0000000002C58000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads