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Resubmissions

07/10/2023, 18:50

231007-xhdn1aee5y 7

07/10/2023, 18:45

231007-xd334agh66 7

07/10/2023, 18:42

231007-xcf7yaed8z 7

07/10/2023, 18:38

231007-xaftdsgh34 7

07/10/2023, 18:30

231007-w5zdjsgg59 10

Analysis

  • max time kernel
    140s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/10/2023, 18:45

General

  • Target

    Loader.exe

  • Size

    133KB

  • MD5

    fc3378c4e8cd002ba1e8a05b37f09d24

  • SHA1

    6b3620287c4f94d2f515c1a8577fffcc02331b0c

  • SHA256

    2b03faa10419218a0214b4ef415ecc41d9c78a8031deaf89d9d836b8fcd54089

  • SHA512

    c1ac224a9aad0dde67f5ec4b4ae9f4921cb7718bf1a27755d32de6ea04f8aaf09864228c0d576492bbd1742209333b988429a3e277b1f4d19ea068b1e548fe69

  • SSDEEP

    1536:yxYnIibKxkGHHIy2MwxIQ+b/zvc5j6xOVHRvUF80XbpGQqmyVttdGFQeOPigE:aLRIHpx3+bb5OVHpUFNcQqmyBeT

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of FindShellTrayWindow 33 IoCs
  • Suspicious use of SendNotifyMessage 33 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Loader.exe
    "C:\Users\Admin\AppData\Local\Temp\Loader.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Loader.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4772
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Loader.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1492
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\XWorm Auto Updater'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2804
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XWorm Auto Updater'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3484
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XWorm Auto Updater" /tr "C:\Users\Admin\AppData\Local\Temp\XWorm Auto Updater"
      2⤵
      • Creates scheduled task(s)
      PID:3776
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\ygojjt.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:2812
  • C:\Users\Admin\AppData\Local\Temp\XWorm Auto Updater
    "C:\Users\Admin\AppData\Local\Temp\XWorm Auto Updater"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2820
  • C:\Users\Admin\AppData\Local\Temp\XWorm Auto Updater
    "C:\Users\Admin\AppData\Local\Temp\XWorm Auto Updater"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:312
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XWorm Auto Updater.log

    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    cadef9abd087803c630df65264a6c81c

    SHA1

    babbf3636c347c8727c35f3eef2ee643dbcc4bd2

    SHA256

    cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

    SHA512

    7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    ef72c47dbfaae0b9b0d09f22ad4afe20

    SHA1

    5357f66ba69b89440b99d4273b74221670129338

    SHA256

    692ec20c7039170fb199510f0436181fd155e6b4516d4d1c9e1675adf99aaa7f

    SHA512

    7514b6bc8dc39fa618223300be27cd535dc35b18c66b4a089e2302e72b3e0cac06d88a989fa1296feb386b3cbe2084019df6430c7f895071b76e04ce559a30b4

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    9bc110200117a3752313ca2acaf8a9e1

    SHA1

    fda6b7da2e7b0175b391475ca78d1b4cf2147cd3

    SHA256

    c88e4bbb64f7fa31429ebe82c1cf07785c44486f37576f783a26ac856e02a4eb

    SHA512

    1f1af32aa18a8cbfcc65b0d4fb7e6ca2705f125eaa85789e981ee68b90c64522e954825abf460d4b4f97567715dfae8d9b0a25a4d54d10bc4c257c472f2e80fb

  • C:\Users\Admin\AppData\Local\Temp\XWorm Auto Updater

    Filesize

    133KB

    MD5

    fc3378c4e8cd002ba1e8a05b37f09d24

    SHA1

    6b3620287c4f94d2f515c1a8577fffcc02331b0c

    SHA256

    2b03faa10419218a0214b4ef415ecc41d9c78a8031deaf89d9d836b8fcd54089

    SHA512

    c1ac224a9aad0dde67f5ec4b4ae9f4921cb7718bf1a27755d32de6ea04f8aaf09864228c0d576492bbd1742209333b988429a3e277b1f4d19ea068b1e548fe69

  • C:\Users\Admin\AppData\Local\Temp\XWorm Auto Updater

    Filesize

    133KB

    MD5

    fc3378c4e8cd002ba1e8a05b37f09d24

    SHA1

    6b3620287c4f94d2f515c1a8577fffcc02331b0c

    SHA256

    2b03faa10419218a0214b4ef415ecc41d9c78a8031deaf89d9d836b8fcd54089

    SHA512

    c1ac224a9aad0dde67f5ec4b4ae9f4921cb7718bf1a27755d32de6ea04f8aaf09864228c0d576492bbd1742209333b988429a3e277b1f4d19ea068b1e548fe69

  • C:\Users\Admin\AppData\Local\Temp\XWorm Auto Updater

    Filesize

    133KB

    MD5

    fc3378c4e8cd002ba1e8a05b37f09d24

    SHA1

    6b3620287c4f94d2f515c1a8577fffcc02331b0c

    SHA256

    2b03faa10419218a0214b4ef415ecc41d9c78a8031deaf89d9d836b8fcd54089

    SHA512

    c1ac224a9aad0dde67f5ec4b4ae9f4921cb7718bf1a27755d32de6ea04f8aaf09864228c0d576492bbd1742209333b988429a3e277b1f4d19ea068b1e548fe69

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_05da5iy5.wpn.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\ygojjt.txt

    Filesize

    4.6MB

    MD5

    f16c0917425c1eb114667b06437e0581

    SHA1

    2a171a934792b225828f0efaeb4bb1a003d54324

    SHA256

    87ddc81d247de32dc707f0f9a0b3126be472e502054513f5bada2c49f4d06b00

    SHA512

    d8bb96e96048845b7fa4005afab2fa192fb9f7e1c8052aff7704ce41c5b1ce5ffad675f1e9e6e2143b954533221433b8568757cbf18b6028daa241b4bdd13fad

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XWorm Auto Updater.lnk

    Filesize

    1KB

    MD5

    70afb9d81ab66261c1aa9046e4a62951

    SHA1

    8c8f7b8a7668832a93f0dab8d02a9ea6419dfaff

    SHA256

    919cbf574ba15a5b8d726a390929311fd4e20146804d118002fae513c2c2f607

    SHA512

    19752f51196fe6241a297e44efd7cbbb6d3a504a1da58a83256ef8994db471d3b5d6af734819c37c8098bab0cd512a29942f1cf74ae23bbae69502a5d1d0a914

  • memory/312-85-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/312-86-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/1492-30-0x000001E925C60000-0x000001E925C70000-memory.dmp

    Filesize

    64KB

  • memory/1492-32-0x000001E925C60000-0x000001E925C70000-memory.dmp

    Filesize

    64KB

  • memory/1492-33-0x000001E925C60000-0x000001E925C70000-memory.dmp

    Filesize

    64KB

  • memory/1492-35-0x000001E925C60000-0x000001E925C70000-memory.dmp

    Filesize

    64KB

  • memory/1492-37-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/1492-20-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/1780-72-0x000000001AC20000-0x000000001AC30000-memory.dmp

    Filesize

    64KB

  • memory/1780-73-0x000000001AC20000-0x000000001AC30000-memory.dmp

    Filesize

    64KB

  • memory/1780-0-0x0000000000010000-0x0000000000038000-memory.dmp

    Filesize

    160KB

  • memory/1780-34-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/1780-1-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/2804-50-0x0000024D2FF60000-0x0000024D2FF70000-memory.dmp

    Filesize

    64KB

  • memory/2804-52-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/2804-39-0x0000024D2FF60000-0x0000024D2FF70000-memory.dmp

    Filesize

    64KB

  • memory/2804-38-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/2820-78-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/2820-76-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/3484-63-0x0000021F9EC70000-0x0000021F9EC80000-memory.dmp

    Filesize

    64KB

  • memory/3484-68-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/3484-58-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/3484-66-0x0000021F9EC70000-0x0000021F9EC80000-memory.dmp

    Filesize

    64KB

  • memory/3484-64-0x0000021F9EC70000-0x0000021F9EC80000-memory.dmp

    Filesize

    64KB

  • memory/4772-18-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/4772-13-0x000001F975460000-0x000001F975470000-memory.dmp

    Filesize

    64KB

  • memory/4772-14-0x000001F975460000-0x000001F975470000-memory.dmp

    Filesize

    64KB

  • memory/4772-11-0x000001F974EF0000-0x000001F974F12000-memory.dmp

    Filesize

    136KB

  • memory/4772-12-0x00007FFC131A0000-0x00007FFC13C61000-memory.dmp

    Filesize

    10.8MB

  • memory/4772-15-0x000001F975460000-0x000001F975470000-memory.dmp

    Filesize

    64KB

  • memory/4956-89-0x00000200034C0000-0x00000200034C1000-memory.dmp

    Filesize

    4KB

  • memory/4956-88-0x00000200034C0000-0x00000200034C1000-memory.dmp

    Filesize

    4KB

  • memory/4956-93-0x00000200034C0000-0x00000200034C1000-memory.dmp

    Filesize

    4KB

  • memory/4956-94-0x00000200034C0000-0x00000200034C1000-memory.dmp

    Filesize

    4KB

  • memory/4956-95-0x00000200034C0000-0x00000200034C1000-memory.dmp

    Filesize

    4KB

  • memory/4956-97-0x00000200034C0000-0x00000200034C1000-memory.dmp

    Filesize

    4KB

  • memory/4956-96-0x00000200034C0000-0x00000200034C1000-memory.dmp

    Filesize

    4KB

  • memory/4956-98-0x00000200034C0000-0x00000200034C1000-memory.dmp

    Filesize

    4KB

  • memory/4956-99-0x00000200034C0000-0x00000200034C1000-memory.dmp

    Filesize

    4KB

  • memory/4956-87-0x00000200034C0000-0x00000200034C1000-memory.dmp

    Filesize

    4KB