mimikatz | 579fd8a0385482fb4c789561a30b09f25671e86422f40ef5cca2036b28f99648

General

Target
infpub.dll
Size 401KB
Sample261104-e1d4dahw9j
SHA256 579fd8a0385482fb4c789561a30b09f25671e86422f40ef5cca2036b28f99648
MD5 1d724f95c61f1055f0d02c2154bbccd3
SHA1 79116fe99f2b421c52ef64097f0f39b815b20907
SHA512 f2d7b018d1516df1c97cfff5507957c75c6d9bf8e2ce52ae0052706f4ec62f13eba6d7be17e6ad2b693fdd58e1fd091c37f17bd2b948cdcd9b95b4ad428c0113
SSDEEP 12288:GtDjvhNTc/cq4RKZZKfArRuSA80m+/6sXRnfPGp:IjTc/cq4RUZaArbInfPGp
TLSH
T11094129332A00072D1B3893025A57B274FBEF5125CA45DEFA9BB19A51DB07C2BE2534F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution mimikatz persistence

Malware Config

Signatures

Family: 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/0x000d00000001c4fe-17.dat	mimikatz

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5264	rundll32.exe

Executes dropped EXE 2 IoCs

pid	Process
4932	85D0.tmp
1100	cscc.dat

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\cscc.dat	rundll32.exe
File created	C:\Windows\dispci.exe	rundll32.exe
File opened for modification	C:\Windows\85D0.tmp	rundll32.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3976	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	cmd.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
2148	schtasks.exe
3208	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
5264	rundll32.exe
5264	rundll32.exe
5264	rundll32.exe
5264	rundll32.exe
4932	85D0.tmp
4932	85D0.tmp
4932	85D0.tmp
4932	85D0.tmp
4932	85D0.tmp
4932	85D0.tmp
4932	85D0.tmp

Suspicious behavior: LoadsDriver 5 IoCs

pid
4
4
4
4
4

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	5264	rundll32.exe
Token: SeDebugPrivilege	5264	rundll32.exe
Token: SeTcbPrivilege	5264	rundll32.exe
Token: SeDebugPrivilege	4932	85D0.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4688 wrote to memory of 5264	4688	rundll32.exe	88
PID 5264 wrote to memory of 5560	5264	rundll32.exe	89
PID 5560 wrote to memory of 1424	5560	cmd.exe	91
PID 5264 wrote to memory of 3976	5264	rundll32.exe	93
PID 5264 wrote to memory of 2488	5264	rundll32.exe	95
PID 5264 wrote to memory of 4932	5264	rundll32.exe	97
PID 3976 wrote to memory of 2148	3976	cmd.exe	98
PID 2488 wrote to memory of 3208	2488	cmd.exe	100

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\infpub.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4688
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\infpub.dll,#1
  2⤵
  - Deletes itself
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5264
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5560
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      System Location Discovery: System Language Discovery
      PID:1424
- - 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 1405374299 && exit"
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3976
  - - 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 1405374299 && exit"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2148
- - 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 05:13:00
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2488
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 05:13:00
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:3208
- - C:\Windows\85D0.tmp
    "C:\Windows\85D0.tmp" \\.\pipe\{9C2013D7-6E40-4C5A-BD50-07D04CC6DA42}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4932

C:\Windows\system32\shutdown.exe
C:\Windows\system32\shutdown.exe
1⤵
PID:1912

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe
1⤵
PID:3100

C:\Windows\cscc.dat
cscc.dat
1⤵
- Executes dropped EXE
PID:1100

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1080

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

Indicator Removal

1

T1070

File Deletion

1

T1070.004

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

85D0.tmp

Path C:\Windows\85D0.tmp
Size 60KB
SHA256 301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c
MD5 347ac3b6b791054de3e5720a7144a977
SHA1 413eba3973a15c1a6429d9f170f3e8287f98c21c
SHA512 9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787
SSDEEP 1536:QeRCKjey4TTGLeBYEUW1SIUDoCB449rHUV:KKjey4TTmeBZUGSIUDoCq49oV
TLSH
T1E6536C5A23A441F8E5679231C8B1ED16E7B2B8461370834F02A8C6AB5FB37D19D3C772
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

cscc.dat

Path C:\Windows\cscc.dat
Size 205KB
SHA256 0b2f863f4119dc88a22cc97c0a136c88a0127cb026751303b045f7322a8972f6
MD5 edb72f4a46c39452d1a5414f7d26454a
SHA1 08f94684e83a27f2414f439975b7f8a6d61fc056
SHA512 d62a19436aba8b2d181c065076b4ab54d7d8159d71237f83f1aff8c3d132a80290af39a8142708acb468d78958c64f338ba6ad0cab9fbac001a6a0bddc0e4faa
SSDEEP 3072:zCBsPmcx7BTn/irEsrDUxo2vYsWwYEJOXKVviEWuwlVBgzUMqqDLW+z3AHW5:8sPnBT/irETNWiJOXKVvKBgz3qqDL1zt
TLSH
T19D244D8D91B90494ECA3D0B5DFE98BD1F2273108C399F9E732A695F0A7235D4263DE06
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1100-31-0x0000000000010000-0x0000000000047000-memory.dmp

Download

memory/5264-0-0x0000000000E40000-0x0000000000EA8000-memory.dmp

Download

memory/5264-7-0x0000000000E40000-0x0000000000EA8000-memory.dmp

Download

memory/5264-10-0x0000000000E40000-0x0000000000EA8000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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