Analysis

  • max time kernel
    298s
  • max time network
    295s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    23-03-2024 19:36

General

  • Target

    XClient.exe

  • Size

    86KB

  • MD5

    b02c9848a5f2039383868c3e100783dd

  • SHA1

    e7d02d1bb49590d54fa2d37345e86ae7a1b6d2cc

  • SHA256

    34aa9bad44607ef50b9327ae1775d6048f8954b2f834ba096a2a85b9a0c0222d

  • SHA512

    7cd95379c2b1b9155cbff3872aa318bcf0bb5edfa5dc3457600c6e52c48e78097a82c66bdadfc3db0f560d2a1c850454e96dee3325b59cde5ebb2abd997d7b76

  • SSDEEP

    1536:tJqyxozIQOT5HjMlBkJqa8s94Utb/GHZe3xRTyPGbRK1wyN6OGOeLj6fZl:DqAQOT5DMoJFb+UxRTldxOkmf7

Malware Config

Extracted

Family

xworm

C2

Thecoolboi991-51392.portmap.io:51392

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Signatures

  • Detect Xworm Payload 7 IoCs
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 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\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2192
    • 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\XClient.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2416
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2692
    • 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\Roaming\XClient.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:312
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2948
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
      2⤵
      • Creates scheduled task(s)
      PID:956
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {25C432BE-B95B-401A-8B5E-74C14044CC34} S-1-5-21-2297530677-1229052932-2803917579-1000:HKULBIBU\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2656
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1332
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1020
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1492
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2004
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    590226554669e91562288e98d3b4de22

    SHA1

    c72026d9293a708ab808e70157f68bf4371859e0

    SHA256

    3bba6848215425ebeb0a60b0c4b764b4ccadbef0125e6f0b7039bfbe0cf44d31

    SHA512

    b51549660b9de0a17528bf7da8f78716db7b86afe24902b00c913b1df5df15a4f0519359ef5931e51512c7f513f8a69a4be0ac2ab138165392df692b6a114554

  • C:\Users\Admin\AppData\Roaming\XClient.exe

    Filesize

    86KB

    MD5

    b02c9848a5f2039383868c3e100783dd

    SHA1

    e7d02d1bb49590d54fa2d37345e86ae7a1b6d2cc

    SHA256

    34aa9bad44607ef50b9327ae1775d6048f8954b2f834ba096a2a85b9a0c0222d

    SHA512

    7cd95379c2b1b9155cbff3872aa318bcf0bb5edfa5dc3457600c6e52c48e78097a82c66bdadfc3db0f560d2a1c850454e96dee3325b59cde5ebb2abd997d7b76

  • \??\PIPE\srvsvc

    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

  • memory/312-39-0x0000000002900000-0x0000000002980000-memory.dmp

    Filesize

    512KB

  • memory/312-64-0x000007FEEECE0000-0x000007FEEF67D000-memory.dmp

    Filesize

    9.6MB

  • memory/312-38-0x000000000290B000-0x0000000002972000-memory.dmp

    Filesize

    412KB

  • memory/312-40-0x000007FEEECE0000-0x000007FEEF67D000-memory.dmp

    Filesize

    9.6MB

  • memory/312-34-0x000007FEEECE0000-0x000007FEEF67D000-memory.dmp

    Filesize

    9.6MB

  • memory/312-36-0x000007FEEECE0000-0x000007FEEF67D000-memory.dmp

    Filesize

    9.6MB

  • memory/312-35-0x0000000002900000-0x0000000002980000-memory.dmp

    Filesize

    512KB

  • memory/1020-92-0x0000000000260000-0x000000000027C000-memory.dmp

    Filesize

    112KB

  • memory/1020-93-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB

  • memory/1020-94-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB

  • memory/1332-62-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB

  • memory/1332-61-0x0000000000CD0000-0x0000000000CEC000-memory.dmp

    Filesize

    112KB

  • memory/1332-63-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB

  • memory/1492-98-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB

  • memory/1492-96-0x0000000000250000-0x000000000026C000-memory.dmp

    Filesize

    112KB

  • memory/1492-97-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB

  • memory/2004-102-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB

  • memory/2004-101-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB

  • memory/2004-100-0x0000000000080000-0x000000000009C000-memory.dmp

    Filesize

    112KB

  • memory/2192-2-0x000000001B5B0000-0x000000001B630000-memory.dmp

    Filesize

    512KB

  • memory/2192-1-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB

  • memory/2192-52-0x000000001B5B0000-0x000000001B630000-memory.dmp

    Filesize

    512KB

  • memory/2192-65-0x0000000000C90000-0x0000000000C9C000-memory.dmp

    Filesize

    48KB

  • memory/2192-0-0x0000000001380000-0x000000000139C000-memory.dmp

    Filesize

    112KB

  • memory/2192-37-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB

  • memory/2192-66-0x000000001D280000-0x000000001D39E000-memory.dmp

    Filesize

    1.1MB

  • memory/2416-11-0x0000000002D00000-0x0000000002D80000-memory.dmp

    Filesize

    512KB

  • memory/2416-14-0x0000000002D00000-0x0000000002D80000-memory.dmp

    Filesize

    512KB

  • memory/2416-8-0x000007FEEECE0000-0x000007FEEF67D000-memory.dmp

    Filesize

    9.6MB

  • memory/2416-7-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

    Filesize

    2.9MB

  • memory/2416-13-0x0000000002D00000-0x0000000002D80000-memory.dmp

    Filesize

    512KB

  • memory/2416-12-0x000007FEEECE0000-0x000007FEEF67D000-memory.dmp

    Filesize

    9.6MB

  • memory/2416-10-0x0000000001E80000-0x0000000001E88000-memory.dmp

    Filesize

    32KB

  • memory/2416-9-0x0000000002D00000-0x0000000002D80000-memory.dmp

    Filesize

    512KB

  • memory/2416-15-0x000007FEEECE0000-0x000007FEEF67D000-memory.dmp

    Filesize

    9.6MB

  • memory/2692-27-0x0000000002C40000-0x0000000002CC0000-memory.dmp

    Filesize

    512KB

  • memory/2692-28-0x000007FEEE340000-0x000007FEEECDD000-memory.dmp

    Filesize

    9.6MB

  • memory/2692-22-0x000007FEEE340000-0x000007FEEECDD000-memory.dmp

    Filesize

    9.6MB

  • memory/2692-24-0x0000000002C40000-0x0000000002CC0000-memory.dmp

    Filesize

    512KB

  • memory/2692-25-0x000007FEEE340000-0x000007FEEECDD000-memory.dmp

    Filesize

    9.6MB

  • memory/2692-21-0x000000001B5D0000-0x000000001B8B2000-memory.dmp

    Filesize

    2.9MB

  • memory/2692-23-0x0000000001D90000-0x0000000001D98000-memory.dmp

    Filesize

    32KB

  • memory/2692-26-0x0000000002C40000-0x0000000002CC0000-memory.dmp

    Filesize

    512KB

  • memory/2948-49-0x000007FEEE340000-0x000007FEEECDD000-memory.dmp

    Filesize

    9.6MB

  • memory/2948-47-0x000007FEEE340000-0x000007FEEECDD000-memory.dmp

    Filesize

    9.6MB

  • memory/2948-48-0x0000000002910000-0x0000000002990000-memory.dmp

    Filesize

    512KB

  • memory/2948-50-0x0000000002910000-0x0000000002990000-memory.dmp

    Filesize

    512KB

  • memory/2948-51-0x0000000002910000-0x0000000002990000-memory.dmp

    Filesize

    512KB

  • memory/2948-53-0x000007FEEE340000-0x000007FEEECDD000-memory.dmp

    Filesize

    9.6MB

  • memory/3068-104-0x0000000000F70000-0x0000000000F8C000-memory.dmp

    Filesize

    112KB

  • memory/3068-105-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB

  • memory/3068-106-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

    Filesize

    9.9MB