mimikatz | f255227fd45316c4681085f39e6da2f509af851f8cc2d2a84ea99c06b935ffe6

Resubmissions

22-08-2024 18:43

240822-xc563asamh 10

21-08-2024 17:16

30-06-2024 00:59

20-06-2024 02:02

20-06-2024 01:44

19-06-2024 01:10

18-06-2024 20:40

18-06-2024 13:45

Analysis

max time kernel
1800s
max time network
1801s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
21-08-2024 17:16

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Report Analysis Logs

General

Target

Documents/Ransomware.Petrwrap/Ransomware.Petrwrap/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 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
behavioral8/files/0x000100000002a95d-14.dat	mimikatz

Blocklisted process makes network request 5 IoCs

flow	pid	Process
1430	4088	rundll32.exe
1468	4088	rundll32.exe
1493	4088	rundll32.exe
1506	4088	rundll32.exe
1522	4088	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4088	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
3296	82AD.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 53 IoCs

description	ioc	Process
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\Java\jdk-1.8\include\win32\jawt_md.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\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\jdwpTransport.h	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\PROTTPLN.DOC	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 (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\include\jawt.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 (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 (x86)\Adobe\Acrobat Reader DC\Resource\ENUtxt.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\HomeBanner_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.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\Complex Machine.pdf	rundll32.exe
File opened for modification	C:\Program Files\DisableResume.asp	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\Java\jdk-1.8\include\win32\bridge\AccessBridgeCalls.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\Bus Schedule.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\PDFSigQFormalRep.pdf	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\plug_ins\Annotations\Stamps\ENU\Dynamic.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\Java\jdk-1.8\include\jvmticmlr.h	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\Google\Chrome\Application\123.0.6312.123\Installer\chrome.7z	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\Java\jdk-1.8\javafx-src.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\jni.h	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 (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\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\HomeBanner_Light.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\Microsoft Office\root\Office16\1033\PROTTPLV.XLS	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\Microsoft Office\Office16\OSPP.VBS	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\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\MobileScanCard_Light.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\jdk-1.8\jre\lib\amd64\jvm.cfg	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\IDTemplates\ENU\AdobeID.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 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\jre-1.8\lib\amd64\jvm.cfg	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 (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\Annotations\Stamps\ENU\SignHere.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\DefaultID.pdf	rundll32.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\dllhost.dat	rundll32.exe
File created	C:\Windows\027cc450ef5f8c5f653329641ec1fed9	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
4524	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4088	rundll32.exe
4088	rundll32.exe
3296	82AD.tmp
3296	82AD.tmp
3296	82AD.tmp
3296	82AD.tmp
3296	82AD.tmp
3296	82AD.tmp

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4088	rundll32.exe
Token: SeDebugPrivilege	4088	rundll32.exe
Token: SeTcbPrivilege	4088	rundll32.exe
Token: SeDebugPrivilege	3296	82AD.tmp

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5112 wrote to memory of 4088	5112	rundll32.exe	81
PID 5112 wrote to memory of 4088	5112	rundll32.exe	81
PID 5112 wrote to memory of 4088	5112	rundll32.exe	81
PID 4088 wrote to memory of 4764	4088	rundll32.exe	83
PID 4088 wrote to memory of 4764	4088	rundll32.exe	83
PID 4088 wrote to memory of 4764	4088	rundll32.exe	83
PID 4088 wrote to memory of 3296	4088	rundll32.exe	84
PID 4088 wrote to memory of 3296	4088	rundll32.exe	84
PID 4764 wrote to memory of 4524	4764	cmd.exe	87
PID 4764 wrote to memory of 4524	4764	cmd.exe	87
PID 4764 wrote to memory of 4524	4764	cmd.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Documents\Ransomware.Petrwrap\Ransomware.Petrwrap\027cc450ef5f8c5f653329641ec1fed9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5112
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\Documents\Ransomware.Petrwrap\Ransomware.Petrwrap\027cc450ef5f8c5f653329641ec1fed9.dll,#1
  2⤵
  - Blocklisted process makes network request
  - 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:4088
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 18:29
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4764
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 18:29
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:4524
- - C:\Users\Admin\AppData\Local\Temp\82AD.tmp
    "C:\Users\Admin\AppData\Local\Temp\82AD.tmp" \\.\pipe\{C95DD826-CAAF-4B81-9608-F2F0E974B1F1}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3296

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

C:\Users\Admin\AppData\Local\Temp\82AD.tmp

Filesize
55KB

MD5
7e37ab34ecdcc3e77e24522ddfd4852d

SHA1
38e2855e11e353cedf9a8a4f2f2747f1c5c07fcf

SHA256
02ef73bd2458627ed7b397ec26ee2de2e92c71a0e7588f78734761d8edbdcd9f

SHA512
1b037a2aa8bf951d2ffe2f724aa0b2fbb39c2173215806ba0327bda7b096301d887f9bb7db46f9e04584b16aa6b1aaeaf67f0ecf5f20eb02ceac27c8753ca587

Download Submit
memory/4088-0-0x00000000010C0000-0x000000000111E000-memory.dmp

Filesize
376KB

Download
memory/4088-8-0x00000000010C0000-0x000000000111E000-memory.dmp

Filesize
376KB

Download
memory/4088-11-0x00000000010C0000-0x000000000111E000-memory.dmp

Filesize
376KB

Download
memory/4088-9-0x00000000010C0000-0x000000000111E000-memory.dmp

Filesize
376KB

Download
memory/4088-22-0x00000000010C0000-0x000000000111E000-memory.dmp

Filesize
376KB

Download