mimikatz | eb39e3c3215ee01a3ed0148766b22b139d1cf42a3631b7c99144ae2d181bbb8c

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30/08/2024, 02:09

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General

Target
2017.6.30/002.dll
Size 353KB
Sample240830-ck7dwascka
SHA256 4df4f5d5f17856c8a429fd454ec7c3fb06cfd153a52cec0110c89995661905fc
MD5 698f9010c068c41bb1fbcdc4b6d3f1f4
SHA1 37ff2d707ff8e16ed3522ff4afab22d8128ea15e
SHA512 bf8073dd5ad29fe611d75b0a4c2269d7d2d8508e11ea8cfad9f7e8c3f31cfa627784edb178b32cd54a34f543c30cab46b0668a60b3dbeba64503606ec6b2b695
SSDEEP 6144:y/Bt80VmNTBo/x95ZjAetGDN3VFNq7pC+9OqFoK30b3ni5rdQY/CdUOs5:y/X4NTS/x9jNG+w+9OqFoK323qdQYKUJ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

mimikatz bootkit discovery persistence spyware stealer

Malware Config

Signatures

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/0x00080000000235c4-14.dat	mimikatz

Deletes itself 1 IoCs

pid	Process
4144	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
3304	4BAA.tmp

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

Drops file in Program Files directory 56 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\DenyStart.zip	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\classfile_constants.h	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\jawt.h	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\win32\jni_md.h	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\lib\amd64\jvm.cfg	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\HomeBanner_Light.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\MobileAcrobatCard_Dark.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\assets\Sample Files\Bus Schedule.pdf	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\win32\bridge\AccessBridgeCalls.h	rundll32.exe
File opened for modification	C:\Program Files\Java\jre-1.8\lib\deploy\ffjcext.zip	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.XLS	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.PPT	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\assets\Sample Files\Adobe Sign White Paper.pdf	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\jvmti.h	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Web Server Extensions\16\BIN\1033\FPEXT.MSG	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\win32\bridge\AccessBridgeCalls.c	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\MobileAcrobatCard_Light.pdf	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\javafx-src.zip	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SAMPLES\SOLVSAMP.XLS	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\1494870C-9912-C184-4CC9-B401-A53F4D8DE290.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Click on 'Change' to select default PDF handler.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\Annotations\Stamps\ENU\Dynamic.pdf	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\jdwpTransport.h	rundll32.exe
File opened for modification	C:\Program Files\FindExit.7z	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\win32\jawt_md.h	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\Office16\OSPP.VBS	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.PPT	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Assets\Archive.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\MobileScanCard_Dark.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\assets\Sample Files\Adobe Cloud Services.pdf	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.XLS	rundll32.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\chrome.7z	rundll32.exe
File opened for modification	C:\Program Files\RevokeDebug.docx	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC	rundll32.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.cfg	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\PDFSigQFormalRep.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\Annotations\Stamps\Words.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\MobileScanCard_Light.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\assets\Sample Files\Complex Machine.pdf	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\Windows\SHELLNEW\EXCEL12.XLSX	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\jni.h	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\jvmticmlr.h	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\Annotations\Stamps\ENU\StandardBusiness.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\ENUtxt.pdf	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\lib\deploy\ffjcext.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\IDTemplates\ENU\AdobeID.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\IDTemplates\ENU\DefaultID.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\Annotations\Stamps\ENU\SignHere.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Common Files\Oracle\Java\java.settings.cfg	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\win32\bridge\AccessBridgePackages.h	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\assets\Sample Files\Adobe Acrobat Pro DC.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Welcome.pdf	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\win32\bridge\AccessBridgeCallbacks.h	rundll32.exe
File opened for modification	C:\Program Files\Java\jre-1.8\lib\amd64\jvm.cfg	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\HomeBanner_Dark.pdf	rundll32.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\002	rundll32.exe
File created	C:\Windows\dllhost.dat	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4588	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4144	rundll32.exe
4144	rundll32.exe
3304	4BAA.tmp
3304	4BAA.tmp
3304	4BAA.tmp
3304	4BAA.tmp
3304	4BAA.tmp
3304	4BAA.tmp

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4144	rundll32.exe
Token: SeDebugPrivilege	4144	rundll32.exe
Token: SeTcbPrivilege	4144	rundll32.exe
Token: SeDebugPrivilege	3304	4BAA.tmp

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4132 wrote to memory of 4144	4132	rundll32.exe	91
PID 4132 wrote to memory of 4144	4132	rundll32.exe	91
PID 4132 wrote to memory of 4144	4132	rundll32.exe	91
PID 4144 wrote to memory of 3076	4144	rundll32.exe	94
PID 4144 wrote to memory of 3076	4144	rundll32.exe	94
PID 4144 wrote to memory of 3076	4144	rundll32.exe	94
PID 4144 wrote to memory of 3304	4144	rundll32.exe	95
PID 4144 wrote to memory of 3304	4144	rundll32.exe	95
PID 3076 wrote to memory of 4588	3076	cmd.exe	98
PID 3076 wrote to memory of 4588	3076	cmd.exe	98
PID 3076 wrote to memory of 4588	3076	cmd.exe	98

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2017.6.30\002.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\2017.6.30\002.dll,#1
  2⤵
  - Deletes itself
  - Writes to the Master Boot Record (MBR)
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4144
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 03:12
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3076
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 03:12
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:4588
- - C:\Users\Admin\AppData\Local\Temp\4BAA.tmp
    "C:\Users\Admin\AppData\Local\Temp\4BAA.tmp" \\.\pipe\{241501BA-701F-4C68-A354-E8024A3F081A}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3304

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1436,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=4400 /prefetch:8
1⤵
PID:2924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

4BAA.tmp

Path C:\Users\Admin\AppData\Local\Temp\4BAA.tmp
Size 55KB
SHA256 02ef73bd2458627ed7b397ec26ee2de2e92c71a0e7588f78734761d8edbdcd9f
MD5 7e37ab34ecdcc3e77e24522ddfd4852d
SHA1 38e2855e11e353cedf9a8a4f2f2747f1c5c07fcf
SHA512 1b037a2aa8bf951d2ffe2f724aa0b2fbb39c2173215806ba0327bda7b096301d887f9bb7db46f9e04584b16aa6b1aaeaf67f0ecf5f20eb02ceac27c8753ca587
SSDEEP 768:wglvV3eE6cYdk8TcqiAjpEhtFLIZJ92evTlvGTIRVIRYcwq22zDcENaiaX+kDt9J:3ihTaAjZNlGT5YcdYENvkA+ChJfSz
MD5 SHA1 SHA512 SSDEEP

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memory/4144-0-0x0000000000AE0000-0x0000000000B3E000-memory.dmp

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memory/4144-8-0x0000000000AE0000-0x0000000000B3E000-memory.dmp

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memory/4144-9-0x0000000000AE0000-0x0000000000B3E000-memory.dmp

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memory/4144-13-0x0000000000AE0000-0x0000000000B3E000-memory.dmp

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memory/4144-22-0x0000000000AE0000-0x0000000000B3E000-memory.dmp

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