badrabbit | 06d269411d74cbc6026eab2776a7cded68dd3380b7e1b890f15d2210d2ff376f

General

Target
LisectAVT_2403002C_35.exe
Size 431KB
Sample240725-b78d1stgpf
SHA256 06d269411d74cbc6026eab2776a7cded68dd3380b7e1b890f15d2210d2ff376f
MD5 d7ad0cdda235608cb4afb702562fdcfd
SHA1 358699a2bc63d26030f88b6287b07aaeb69680c5
SHA512 4e269eb4a0d11f54d2e3ce167471b3a52cb4cb33f0766c420c0553db48c95f41c2a73fe1257669a63893a2a3e9cb0c1920a516d1ba780faea3f46e97260d2636
SSDEEP 12288:BHNTywFAvN86pLbqWRKHZKfErrZJyZ0yqsGO3XR6:vT56NbqWRwZaEr3yt2O3XR6
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

badrabbit mimikatz discovery 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
behavioral2/files/0x0003000000022afa-20.dat	mimikatz

Executes dropped EXE 1 IoCs

pid	Process
3924	A122.tmp

Loads dropped DLL 1 IoCs

pid	Process
844	rundll32.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\A122.tmp	rundll32.exe
File created	C:\Windows\infpub.dat	LisectAVT_2403002C_35.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

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LisectAVT_2403002C_35.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1144	schtasks.exe
2652	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
844	rundll32.exe
844	rundll32.exe
844	rundll32.exe
844	rundll32.exe
3924	A122.tmp
3924	A122.tmp
3924	A122.tmp
3924	A122.tmp
3924	A122.tmp
3924	A122.tmp

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	844	rundll32.exe
Token: SeDebugPrivilege	844	rundll32.exe
Token: SeTcbPrivilege	844	rundll32.exe
Token: SeDebugPrivilege	3924	A122.tmp

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 844	2040	LisectAVT_2403002C_35.exe	84
PID 2040 wrote to memory of 844	2040	LisectAVT_2403002C_35.exe	84
PID 2040 wrote to memory of 844	2040	LisectAVT_2403002C_35.exe	84
PID 844 wrote to memory of 2960	844	rundll32.exe	85
PID 844 wrote to memory of 2960	844	rundll32.exe	85
PID 844 wrote to memory of 2960	844	rundll32.exe	85
PID 2960 wrote to memory of 4220	2960	cmd.exe	87
PID 2960 wrote to memory of 4220	2960	cmd.exe	87
PID 2960 wrote to memory of 4220	2960	cmd.exe	87
PID 844 wrote to memory of 4408	844	rundll32.exe	92
PID 844 wrote to memory of 4408	844	rundll32.exe	92
PID 844 wrote to memory of 4408	844	rundll32.exe	92
PID 844 wrote to memory of 2676	844	rundll32.exe	94
PID 844 wrote to memory of 2676	844	rundll32.exe	94
PID 844 wrote to memory of 2676	844	rundll32.exe	94
PID 844 wrote to memory of 3924	844	rundll32.exe	95
PID 844 wrote to memory of 3924	844	rundll32.exe	95
PID 4408 wrote to memory of 1144	4408	cmd.exe	97
PID 4408 wrote to memory of 1144	4408	cmd.exe	97
PID 4408 wrote to memory of 1144	4408	cmd.exe	97
PID 2676 wrote to memory of 2652	2676	cmd.exe	99
PID 2676 wrote to memory of 2652	2676	cmd.exe	99
PID 2676 wrote to memory of 2652	2676	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\LisectAVT_2403002C_35.exe
"C:\Users\Admin\AppData\Local\Temp\LisectAVT_2403002C_35.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2040
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:844
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2960
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      System Location Discovery: System Language Discovery
      PID:4220
- - 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 2829707102 && exit"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4408
  - - 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 2829707102 && exit"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:1144
- - 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 02:06:00
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2676
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 02:06:00
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2652
- - C:\Windows\A122.tmp
    "C:\Windows\A122.tmp" \\.\pipe\{B99AFB36-545B-4828-88D6-9D105986E268}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

A122.tmp

Path C:\Windows\A122.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/844-3-0x0000000002860000-0x00000000028C8000-memory.dmp

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memory/844-11-0x0000000002860000-0x00000000028C8000-memory.dmp

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memory/844-14-0x0000000002860000-0x00000000028C8000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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