Analysis

  • max time kernel
    100s
  • max time network
    99s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    26-02-2021 06:24

General

  • Target

    PROFORMA INVOICE.scr

  • Size

    22KB

  • MD5

    4480e5c41df955746e6b762828e64ddb

  • SHA1

    75fd2876572e72da98a99065152c338f935d722f

  • SHA256

    98bba6280dc438b35e3d0a4f468d1e50dd44bdafdd3e8c396a6dacf6be50fd71

  • SHA512

    92db76915c468ab2e3a1185b3ee5a0d8849bfb623e5bfdf0fa128a002b16e768097b9440c905a4cb38b70aee9b36c21ce2db57f150f93fc5845ff5f667957a41

Malware Config

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger Payload 3 IoCs
  • Windows security bypass 2 TTPs
  • Nirsoft 7 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Windows security modification 2 TTPs 8 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 11 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.scr
    "C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.scr" /S
    1⤵
    • Loads dropped DLL
    • Windows security modification
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1068
      • C:\Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\AdvancedRun.exe" /SpecialRun 4101d8 1068
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1088
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.scr" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:440
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:604
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:1056
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1352

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • C:\Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • C:\Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Local\Temp\8eacc7d0-c3e3-4ead-ad28-11b2f06761b3\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • memory/440-42-0x000000007EF30000-0x000000007EF31000-memory.dmp
    Filesize

    4KB

  • memory/440-21-0x0000000074000000-0x00000000746EE000-memory.dmp
    Filesize

    6.9MB

  • memory/440-51-0x0000000006280000-0x0000000006281000-memory.dmp
    Filesize

    4KB

  • memory/440-52-0x00000000061E0000-0x00000000061E1000-memory.dmp
    Filesize

    4KB

  • memory/440-66-0x0000000006300000-0x0000000006301000-memory.dmp
    Filesize

    4KB

  • memory/440-36-0x0000000006020000-0x0000000006021000-memory.dmp
    Filesize

    4KB

  • memory/440-67-0x0000000006310000-0x0000000006311000-memory.dmp
    Filesize

    4KB

  • memory/440-18-0x0000000000000000-mapping.dmp
  • memory/440-28-0x00000000052C0000-0x00000000052C1000-memory.dmp
    Filesize

    4KB

  • memory/440-44-0x0000000006140000-0x0000000006141000-memory.dmp
    Filesize

    4KB

  • memory/440-22-0x0000000002410000-0x0000000002411000-memory.dmp
    Filesize

    4KB

  • memory/440-41-0x0000000006080000-0x0000000006081000-memory.dmp
    Filesize

    4KB

  • memory/440-24-0x00000000049A0000-0x00000000049A1000-memory.dmp
    Filesize

    4KB

  • memory/440-25-0x0000000004960000-0x0000000004961000-memory.dmp
    Filesize

    4KB

  • memory/440-26-0x0000000004962000-0x0000000004963000-memory.dmp
    Filesize

    4KB

  • memory/440-27-0x0000000004780000-0x0000000004781000-memory.dmp
    Filesize

    4KB

  • memory/604-20-0x0000000000000000-mapping.dmp
  • memory/1056-23-0x0000000000000000-mapping.dmp
  • memory/1068-11-0x0000000074D11000-0x0000000074D13000-memory.dmp
    Filesize

    8KB

  • memory/1068-9-0x0000000000000000-mapping.dmp
  • memory/1088-15-0x0000000000000000-mapping.dmp
  • memory/1352-30-0x000000000046467E-mapping.dmp
  • memory/1352-31-0x0000000074000000-0x00000000746EE000-memory.dmp
    Filesize

    6.9MB

  • memory/1352-32-0x0000000000400000-0x000000000046A000-memory.dmp
    Filesize

    424KB

  • memory/1352-29-0x0000000000400000-0x000000000046A000-memory.dmp
    Filesize

    424KB

  • memory/1352-43-0x0000000004BF0000-0x0000000004BF1000-memory.dmp
    Filesize

    4KB

  • memory/1648-2-0x0000000074000000-0x00000000746EE000-memory.dmp
    Filesize

    6.9MB

  • memory/1648-6-0x0000000004C00000-0x0000000004CDB000-memory.dmp
    Filesize

    876KB

  • memory/1648-5-0x0000000004D80000-0x0000000004D81000-memory.dmp
    Filesize

    4KB

  • memory/1648-3-0x0000000000850000-0x0000000000851000-memory.dmp
    Filesize

    4KB