Overview

overview

10

Static

static

10

winprofile

windows7-x64

10

winprofile

windows10-1703-x64

10

Resubmissions

19-09-2023 04:16

230919-evw21aeg6z 10

19-09-2023 03:45

230919-ebdfjsef3t 10

Analysis

  • max time kernel
    300s
  • max time network
    311s
  • platform
    windows10-1703_x64
  • resource
    win10-20230915-en
  • resource tags

    arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-x64system
  • submitted
    19-09-2023 03:45

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General

  • Target

    51220927e71a1b8c5cc0ca85c454dc93f3aaae25bb3ec0dc3a9837236687d45f.exe

  • Size

    3.1MB

  • MD5

    28e03a0e0871a90ee993db029c25ded5

  • SHA1

    651f0c06a5d0bf37a8a7987626a89135b5384459

  • SHA256

    51220927e71a1b8c5cc0ca85c454dc93f3aaae25bb3ec0dc3a9837236687d45f

  • SHA512

    c13997f114735d9db85205b7b76f5236c0721babd850528bd066d0ed0059bd82650008bf52a8172a9a183ad8b90beb16c39b682511c6750d896ef99c10a57a60

  • SSDEEP

    49152:q+4bzTvij0votBkRPJMMB+9YUkSk+yfzBcpoG9SbTHHB72eh2NT:q+i/i5tBkRPJMM2YUkSk5u

Score
10/10
phobosquasarcuntevasionpersistenceransomwarespywarestealertrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

cunt

C2

37.139.129.145:5512

37.139.129.145:5505
Mutex

5a092138-836c-4206-9af6-8a540736ef07

Attributes
  • encryption_key

    D21B49539C3EA494897D43CF75CBF5F989F0792A

  • install_name

    ntoskrnl.exe

  • log_directory

    SystemLogs

  • reconnect_delay

    3000

  • startup_key

    Kernel

  • subdirectory

    Kernel

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

    ransomwarephobos
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

    trojanspywarequasar
  • Quasar payload 3 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (54) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Modifies Windows Firewall 1 TTPs 2 IoCs
    evasion
  • Drops startup file 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops desktop.ini file(s) 4 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

    persistence
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs
  • 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
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\51220927e71a1b8c5cc0ca85c454dc93f3aaae25bb3ec0dc3a9837236687d45f.exe
    "C:\Users\Admin\AppData\Local\Temp\51220927e71a1b8c5cc0ca85c454dc93f3aaae25bb3ec0dc3a9837236687d45f.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3856
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Kernel" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Kernel\ntoskrnl.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:3804
    • C:\Users\Admin\AppData\Roaming\Kernel\ntoskrnl.exe
      "C:\Users\Admin\AppData\Roaming\Kernel\ntoskrnl.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:200
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Kernel" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Kernel\ntoskrnl.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:1116
      • C:\Users\Admin\AppData\Local\Temp\JUNfRnCbnBiS.exe
        "C:\Users\Admin\AppData\Local\Temp\JUNfRnCbnBiS.exe"
        3⤵
        • Drops startup file
        • Executes dropped EXE
        • Adds Run key to start application
        • Drops desktop.ini file(s)
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1256
        • C:\Users\Admin\AppData\Local\Temp\JUNfRnCbnBiS.exe
          "C:\Users\Admin\AppData\Local\Temp\JUNfRnCbnBiS.exe"
          4⤵
          • Executes dropped EXE
          PID:3556
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:580
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            5⤵
            • Interacts with shadow copies
            PID:4716
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic shadowcopy delete
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1004
          • C:\Windows\system32\bcdedit.exe
            bcdedit /set {default} bootstatuspolicy ignoreallfailures
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:4452
          • C:\Windows\system32\bcdedit.exe
            bcdedit /set {default} recoveryenabled no
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:576
          • C:\Windows\system32\wbadmin.exe
            wbadmin delete catalog -quiet
            5⤵
            • Deletes backup catalog
            PID:1816
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2476
          • C:\Windows\system32\netsh.exe
            netsh advfirewall set currentprofile state off
            5⤵
            • Modifies Windows Firewall
            PID:4664
          • C:\Windows\system32\netsh.exe
            netsh firewall set opmode mode=disable
            5⤵
            • Modifies Windows Firewall
            PID:3668
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:496
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4952
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4008
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1596

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Initial Access

    Execution

    Command and Scripting Interpreter

    1
    T1059

    Scheduled Task/Job

    1
    T1053

    Persistence

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    Indicator Removal

    3
    T1070

    File Deletion

    3
    T1070.004

    Modify Registry

    1
    T1112

    Credential Access

    Unsecured Credentials

    1
    T1552

    Credentials In Files

    1
    T1552.001

    Discovery

    System Information Discovery

    2
    T1082

    Query Registry

    2
    T1012

    Peripheral Device Discovery

    1
    T1120

    Lateral Movement

    Collection

    Data from Local System

    1
    T1005

    Exfiltration

    Command and Control

    Impact

    Inhibit System Recovery

    4
    T1490

    Resource Development

    Reconnaissance

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files\7-Zip\7-zip32.dll
      Filesize

      49KB

      MD5

      2f244a56091c9705794e92e6bcc38058

      SHA1

      3f2b518be764f29c66ba8564d1be8f4309cce747

      SHA256

      e322feefa8d4c76d8749f88c9b877e3e119418c4ac0b18a8cfb7260638cc588d

      SHA512

      3ee3835abfec9c2db4ba1f33b5e59db2400e712d5dd7cde82a12889ea1beab8ac85b923ec0447e81b3d2ce3ebd14922882653f5bcdcc81a29f225acfa4872572

      Download Submit
    • C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.ssl.feature_1.0.0.v20140827-1444\META-INF\eclipse.inf
      Filesize

      57B

      MD5

      ab9d8ef2ffa9145d6c325cefa41d5d4e

      SHA1

      0f2bf6d5e1a0209d19f8f6e7d08b3e2d9cf4c5ab

      SHA256

      65a16cb7861335d5ace3c60718b5052e44660726da4cd13bb745381b235a1785

      SHA512

      904f1892ec5c43c557199325fda79cacaee2e8f1b4a1d41b85c893d967c3209f0c58081c0c9a6083f85fd4866611dfeb490c11f3163c12f4f0579adda2c68100

      Download Submit
    • C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\iconcache_768.db
      Filesize

      24B

      MD5

      1681ffc6e046c7af98c9e6c232a3fe0a

      SHA1

      d3399b7262fb56cb9ed053d68db9291c410839c4

      SHA256

      9d908ecfb6b256def8b49a7c504e6c889c4b0e41fe6ce3e01863dd7b61a20aa0

      SHA512

      11bb994b5d2eab48b18667c7d8943e82c9011cb1d974304b8f2b6247a7e6b7f55ca2f7c62893644c3728d17dafd74ae3ba46271cf6287bb9e751c779a26fefc5

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\JUNfRnCbnBiS.exe
      Filesize

      56KB

      MD5

      48ecb8dcb214011b5e89e18fa76e6440

      SHA1

      ccf1384b9ae04c909eee5e4a3d6cc1000ad135d5

      SHA256

      362b89161b579321c0780e35f0f24ac9f5128a4b27f263319a3900ae431ff87c

      SHA512

      a72d97127566acb1eaf53a810ed828ca17685221c39259e2849de045c36c4c5b8c8481cdf3d9404998e82a51efb8618d44114f016c8eb2f6b0a03ec6fe56369d

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\JUNfRnCbnBiS.exe
      Filesize

      56KB

      MD5

      48ecb8dcb214011b5e89e18fa76e6440

      SHA1

      ccf1384b9ae04c909eee5e4a3d6cc1000ad135d5

      SHA256

      362b89161b579321c0780e35f0f24ac9f5128a4b27f263319a3900ae431ff87c

      SHA512

      a72d97127566acb1eaf53a810ed828ca17685221c39259e2849de045c36c4c5b8c8481cdf3d9404998e82a51efb8618d44114f016c8eb2f6b0a03ec6fe56369d

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\JUNfRnCbnBiS.exe
      Filesize

      56KB

      MD5

      48ecb8dcb214011b5e89e18fa76e6440

      SHA1

      ccf1384b9ae04c909eee5e4a3d6cc1000ad135d5

      SHA256

      362b89161b579321c0780e35f0f24ac9f5128a4b27f263319a3900ae431ff87c

      SHA512

      a72d97127566acb1eaf53a810ed828ca17685221c39259e2849de045c36c4c5b8c8481cdf3d9404998e82a51efb8618d44114f016c8eb2f6b0a03ec6fe56369d

      Download Submit
    • C:\Users\Admin\AppData\Roaming\Kernel\ntoskrnl.exe
      Filesize

      3.1MB

      MD5

      28e03a0e0871a90ee993db029c25ded5

      SHA1

      651f0c06a5d0bf37a8a7987626a89135b5384459

      SHA256

      51220927e71a1b8c5cc0ca85c454dc93f3aaae25bb3ec0dc3a9837236687d45f

      SHA512

      c13997f114735d9db85205b7b76f5236c0721babd850528bd066d0ed0059bd82650008bf52a8172a9a183ad8b90beb16c39b682511c6750d896ef99c10a57a60

      Download Submit
    • C:\Users\Admin\AppData\Roaming\Kernel\ntoskrnl.exe
      Filesize

      3.1MB

      MD5

      28e03a0e0871a90ee993db029c25ded5

      SHA1

      651f0c06a5d0bf37a8a7987626a89135b5384459

      SHA256

      51220927e71a1b8c5cc0ca85c454dc93f3aaae25bb3ec0dc3a9837236687d45f

      SHA512

      c13997f114735d9db85205b7b76f5236c0721babd850528bd066d0ed0059bd82650008bf52a8172a9a183ad8b90beb16c39b682511c6750d896ef99c10a57a60

      Download Submit
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JUNfRnCbnBiS.exe
      Filesize

      56KB

      MD5

      48ecb8dcb214011b5e89e18fa76e6440

      SHA1

      ccf1384b9ae04c909eee5e4a3d6cc1000ad135d5

      SHA256

      362b89161b579321c0780e35f0f24ac9f5128a4b27f263319a3900ae431ff87c

      SHA512

      a72d97127566acb1eaf53a810ed828ca17685221c39259e2849de045c36c4c5b8c8481cdf3d9404998e82a51efb8618d44114f016c8eb2f6b0a03ec6fe56369d

      Download Submit
    • memory/200-9-0x00007FFD1B750000-0x00007FFD1C13C000-memory.dmp
      Filesize

      9.9MB

      Download
    • memory/200-14-0x00007FFD1B750000-0x00007FFD1C13C000-memory.dmp
      Filesize

      9.9MB

      Download
    • memory/200-15-0x000000001BFC0000-0x000000001BFD0000-memory.dmp
      Filesize

      64KB

      Download
    • memory/200-16-0x000000001BFA0000-0x000000001BFB2000-memory.dmp
      Filesize

      72KB

      Download
    • memory/200-17-0x000000001C720000-0x000000001C75E000-memory.dmp
      Filesize

      248KB

      Download
    • memory/200-13-0x000000001C7A0000-0x000000001C852000-memory.dmp
      Filesize

      712KB

      Download
    • memory/200-12-0x000000001C690000-0x000000001C6E0000-memory.dmp
      Filesize

      320KB

      Download
    • memory/200-10-0x000000001BFC0000-0x000000001BFD0000-memory.dmp
      Filesize

      64KB

      Download
    • memory/3856-11-0x00007FFD1B750000-0x00007FFD1C13C000-memory.dmp
      Filesize

      9.9MB

      Download
    • memory/3856-0-0x0000000000B80000-0x0000000000EA2000-memory.dmp
      Filesize

      3.1MB

      Download
    • memory/3856-2-0x000000001BDC0000-0x000000001BDD0000-memory.dmp
      Filesize

      64KB

      Download
    • memory/3856-1-0x00007FFD1B750000-0x00007FFD1C13C000-memory.dmp
      Filesize

      9.9MB

      Download