mimikatz | bab1853454ca6fdd3acd471254101db1b805b601e309a49ec7b4b1fbcfc47ad7

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01-03-2024 20:38

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01-03-2024 20:03

240301-ysybtsce5x 3

01-03-2024 18:44

240301-xdmfcabg67 3

01-03-2024 17:56

240301-wjhhxabb92 10

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01-03-2024 17:56

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General

Target

027cc450ef5f8c5f653329641ec1fed9.dll
Size

353KB
MD5

71b6a493388e7d0b40c83ce903bc6b04
SHA1

34f917aaba5684fbe56d3c57d48ef2a1aa7cf06d
SHA256

027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745
SHA512

072205eca5099d9269f358fe534b370ff21a4f12d7938d6d2e2713f69310f0698e53b8aff062849f0b2a521f68bee097c1840993825d2a5a3aa8cf4145911c6f
SSDEEP

6144:y/Bt80VmNTBo/x95ZjAetGDN3VFNq7pC+9OqFoK30b3ni5rdQY/CdUOs2:y/X4NTS/x9jNG+w+9OqFoK323qdQYKUG

Score

10^/10

mimikatz bootkit 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

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\2A8A.tmp	mimikatz

Deletes itself 1 IoCs

Processes:

rundll32.exe

pid process

1888 rundll32.exe
Executes dropped EXE 1 IoCs

Processes:

2A8A.tmp

pid process

2856 2A8A.tmp
Loads dropped DLL 3 IoCs

Processes:

rundll32.exe

pid process

1888 rundll32.exe
1888 rundll32.exe
2632
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

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PhysicalDrive0 rundll32.exe

pid	process
1888	rundll32.exe

pid	process
2856	2A8A.tmp

pid	process
1888	rundll32.exe
1888	rundll32.exe
2632

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

Drops file in Program Files directory 64 IoCs

Processes:

rundll32.exe

description	ioc	process
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\amd64\jvm.cfg	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\IDTemplates\ENU\DefaultID.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\Annotations\Stamps\ENU\StandardBusiness.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\DataSet.zip	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\include\jvmti.h	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\include\win32\jni_md.h	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLN.DOC	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\AboutBox.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\Interface.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\VisualBasic\1033\MDIParent.zip	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\include\win32\jawt_md.h	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\deploy\ffjcext.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\GRPHFLT\CGMIMP32.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\SCHDREQ.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\SMIMEE.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\TASKACC.CFG	rundll32.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.cfg	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\RCLRPT.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\SCHDCNCL.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\SCHDRESP.CFG	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\include\classfile_constants.h	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\RESEND.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Documentation\1033\License Agreements\SynchronizationEula.rtf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\VisualBasic\1033\Dataset.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\SECURE.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\ResourceInternal.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\Settings.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\VisualBasic\1033\Form.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Internet Explorer\en-US\eula.rtf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLV.PPT	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\CONTACT.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\POST.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\OMSSMS.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\VisualBasic\1033\UserControl.zip	rundll32.exe
File opened for modification	C:\Program Files\Java\jre7\lib\amd64\jvm.cfg	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Resource\ENUtxt.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\TASKREQ.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\VisualBasic\1033\EmptyDatabase.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\PDFSigQFormalRep.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\AssemblyInfoInternal.zip	rundll32.exe
File opened for modification	C:\Program Files\Internet Explorer\en-US\eula.rtf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLV.XLS	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\Form.zip	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\include\win32\bridge\AccessBridgePackages.h	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLN.XLS	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\AppConfig.zip	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\p2\org.eclipse.equinox.p2.engine\profileRegistry\JMC.profile\1423861261279.profile.gz	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\Visualizer.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\Annotations\Stamps\ENU\Dynamic.pdf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\TASKDEC.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\TASKUPD.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\TextFile.zip	rundll32.exe
File opened for modification	C:\Program Files\InvokeUnblock.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\OUTLPERF.H	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\POSTIT.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\REMOTE.CFG	rundll32.exe
File opened for modification	C:\Program Files\SkipAssert.rtf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\AppConfigInternal.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\VisualBasic\1033\AppConfigurationInternal.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\VisualBasic\1033\Dialog.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\ACTIVITY.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\RSSITEM.CFG	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\EmptyDatabase.zip	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\MDIParent.zip	rundll32.exe

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exe

description ioc process

File created C:\Windows\027cc450ef5f8c5f653329641ec1fed9 rundll32.exe
File created C:\Windows\dllhost.dat rundll32.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2684 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

rundll32.exe2A8A.tmp

pid process

1888 rundll32.exe
2856 2A8A.tmp
2856 2A8A.tmp
2856 2A8A.tmp
2856 2A8A.tmp
2856 2A8A.tmp

description	ioc	process
File created	C:\Windows\027cc450ef5f8c5f653329641ec1fed9	rundll32.exe
File created	C:\Windows\dllhost.dat	rundll32.exe

pid	process
2684	schtasks.exe

pid	process
1888	rundll32.exe
2856	2A8A.tmp
2856	2A8A.tmp
2856	2A8A.tmp
2856	2A8A.tmp
2856	2A8A.tmp

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

rundll32.exe2A8A.tmp

description	pid	process
Token: SeShutdownPrivilege	1888	rundll32.exe
Token: SeDebugPrivilege	1888	rundll32.exe
Token: SeTcbPrivilege	1888	rundll32.exe
Token: SeDebugPrivilege	2856	2A8A.tmp

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

rundll32.exerundll32.execmd.exe

description	pid	process	target process
PID 2172 wrote to memory of 1888	2172	rundll32.exe	rundll32.exe
PID 2172 wrote to memory of 1888	2172	rundll32.exe	rundll32.exe
PID 2172 wrote to memory of 1888	2172	rundll32.exe	rundll32.exe
PID 2172 wrote to memory of 1888	2172	rundll32.exe	rundll32.exe
PID 2172 wrote to memory of 1888	2172	rundll32.exe	rundll32.exe
PID 2172 wrote to memory of 1888	2172	rundll32.exe	rundll32.exe
PID 2172 wrote to memory of 1888	2172	rundll32.exe	rundll32.exe
PID 1888 wrote to memory of 3060	1888	rundll32.exe	cmd.exe
PID 1888 wrote to memory of 3060	1888	rundll32.exe	cmd.exe
PID 1888 wrote to memory of 3060	1888	rundll32.exe	cmd.exe
PID 1888 wrote to memory of 3060	1888	rundll32.exe	cmd.exe
PID 3060 wrote to memory of 2684	3060	cmd.exe	schtasks.exe
PID 3060 wrote to memory of 2684	3060	cmd.exe	schtasks.exe
PID 3060 wrote to memory of 2684	3060	cmd.exe	schtasks.exe
PID 3060 wrote to memory of 2684	3060	cmd.exe	schtasks.exe
PID 1888 wrote to memory of 2856	1888	rundll32.exe	2A8A.tmp
PID 1888 wrote to memory of 2856	1888	rundll32.exe	2A8A.tmp
PID 1888 wrote to memory of 2856	1888	rundll32.exe	2A8A.tmp
PID 1888 wrote to memory of 2856	1888	rundll32.exe	2A8A.tmp

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\027cc450ef5f8c5f653329641ec1fed9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2172

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\027cc450ef5f8c5f653329641ec1fed9.dll,#1
2⤵
- Deletes itself
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1888

C:\Windows\SysWOW64\cmd.exe
/c schtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 18:60
3⤵
- Suspicious use of WriteProcessMemory
PID:3060

C:\Windows\SysWOW64\schtasks.exe
schtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 18:60
4⤵
- Creates scheduled task(s)
PID:2684

C:\Users\Admin\AppData\Local\Temp\2A8A.tmp
"C:\Users\Admin\AppData\Local\Temp\2A8A.tmp" \\.\pipe\{CD5BE0CD-08FB-4724-B11D-ECDB4839DD97}
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2856

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\AppData\Local\Temp\2A8A.tmp
Filesize
55KB

MD5
7e37ab34ecdcc3e77e24522ddfd4852d

SHA1
38e2855e11e353cedf9a8a4f2f2747f1c5c07fcf

SHA256
02ef73bd2458627ed7b397ec26ee2de2e92c71a0e7588f78734761d8edbdcd9f

SHA512
1b037a2aa8bf951d2ffe2f724aa0b2fbb39c2173215806ba0327bda7b096301d887f9bb7db46f9e04584b16aa6b1aaeaf67f0ecf5f20eb02ceac27c8753ca587

Download Submit
memory/1888-0-0x0000000000300000-0x000000000035E000-memory.dmp

Filesize
376KB

Download
memory/1888-8-0x0000000000300000-0x000000000035E000-memory.dmp

Filesize
376KB

Download
memory/1888-9-0x0000000000300000-0x000000000035E000-memory.dmp

Filesize
376KB

Download
memory/1888-11-0x0000000000300000-0x000000000035E000-memory.dmp

Filesize
376KB

Download
memory/1888-22-0x0000000000300000-0x000000000035E000-memory.dmp

Filesize
376KB

Download