badrabbit | ea8ccb8b5ec36195af831001b3cc46caedfc61a6194e2568901e7685c57ceefa

General

Target
[email protected]
Size 431KB
Sample230612-w36d3sdc59
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 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f77-153.dat	mimikatz
behavioral2/files/0x0008000000022f77-154.dat	mimikatz

Modifies extensions of user files 2 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

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

Executes dropped EXE 1 IoCs

pid	Process
1428	B422.tmp

Loads dropped DLL 1 IoCs

pid	Process
4668	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{42D83604-8491-4808-A66E-D8E03DAFDB6E}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{AD327A70-0EDD-43AA-BA5E-03FE3B07465A}.catalogItem	svchost.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\infpub.dat	[email protected]
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\B422.tmp	rundll32.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.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
1200	schtasks.exe
5024	schtasks.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4668	rundll32.exe
4668	rundll32.exe
4668	rundll32.exe
4668	rundll32.exe
1428	B422.tmp
1428	B422.tmp
1428	B422.tmp
1428	B422.tmp
1428	B422.tmp
1428	B422.tmp

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4668	rundll32.exe
Token: SeDebugPrivilege	4668	rundll32.exe
Token: SeTcbPrivilege	4668	rundll32.exe
Token: SeDebugPrivilege	1428	B422.tmp

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3736 wrote to memory of 4668	3736	[email protected]	83
PID 3736 wrote to memory of 4668	3736	[email protected]	83
PID 3736 wrote to memory of 4668	3736	[email protected]	83
PID 4668 wrote to memory of 3372	4668	rundll32.exe	84
PID 4668 wrote to memory of 3372	4668	rundll32.exe	84
PID 4668 wrote to memory of 3372	4668	rundll32.exe	84
PID 3372 wrote to memory of 3564	3372	cmd.exe	86
PID 3372 wrote to memory of 3564	3372	cmd.exe	86
PID 3372 wrote to memory of 3564	3372	cmd.exe	86
PID 4668 wrote to memory of 3876	4668	rundll32.exe	87
PID 4668 wrote to memory of 3876	4668	rundll32.exe	87
PID 4668 wrote to memory of 3876	4668	rundll32.exe	87
PID 3876 wrote to memory of 1200	3876	cmd.exe	89
PID 3876 wrote to memory of 1200	3876	cmd.exe	89
PID 3876 wrote to memory of 1200	3876	cmd.exe	89
PID 4668 wrote to memory of 4752	4668	rundll32.exe	90
PID 4668 wrote to memory of 4752	4668	rundll32.exe	90
PID 4668 wrote to memory of 4752	4668	rundll32.exe	90
PID 4668 wrote to memory of 1428	4668	rundll32.exe	92
PID 4668 wrote to memory of 1428	4668	rundll32.exe	92
PID 4752 wrote to memory of 5024	4752	cmd.exe	94
PID 4752 wrote to memory of 5024	4752	cmd.exe	94
PID 4752 wrote to memory of 5024	4752	cmd.exe	94

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\[email protected]
"C:\Users\Admin\AppData\Local\Temp\[email protected]"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3736
- C:\Windows\SysWOW64\rundll32.exe
  C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
  2⤵
  - Modifies extensions of user files
  - Loads dropped DLL
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4668
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3372
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      PID:3564
- - 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 3578329668 && exit"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3876
  - - 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 3578329668 && exit"
      4⤵
      Creates scheduled task(s)
      PID:1200
- - 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 18:46:00
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4752
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 18:46:00
      4⤵
      Creates scheduled task(s)
      PID:5024
- - C:\Windows\B422.tmp
    "C:\Windows\B422.tmp" \\.\pipe\{55E80A0C-B946-4DFC-BA8B-E0564F3B7183}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1428

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4444

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

B422.tmp

Path C:\Windows\B422.tmp
Size 60KB
SHA256 301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c
MD5 347ac3b6b791054de3e5720a7144a977
SHA1 413eba3973a15c1a6429d9f170f3e8287f98c21c
SHA512 9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787
SSDEEP 1536:QeRCKjey4TTGLeBYEUW1SIUDoCB449rHUV:KKjey4TTmeBZUGSIUDoCq49oV
MD5 SHA1 SHA512 SSDEEP

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B422.tmp

Path C:\Windows\B422.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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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/4668-136-0x0000000002970000-0x00000000029D8000-memory.dmp

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memory/4668-144-0x0000000002970000-0x00000000029D8000-memory.dmp

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memory/4668-147-0x0000000002970000-0x00000000029D8000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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