Analysis

  • max time kernel
    91s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    08-07-2022 12:45

General

  • Target

    Mínimo Pedido.exe

  • Size

    694KB

  • MD5

    4f543dbc253c5c634a42f051f88f0b68

  • SHA1

    9cc2edc684daf498eb766aeddb983bb64065458c

  • SHA256

    613dda5e32a5c2bf7f6a6992272a661f753d93d6c7ab761ae20a52e95f87803b

  • SHA512

    27df8c8150c0d4faad9b86fe3af577752fa533892563d5cdd0e992c87ea1e6f98b8341f91fa4e5820bb4095f02bc70a57a14060e79d352f41914819584578149

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 8 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 1 IoCs
  • XpertRAT

    XpertRAT is a remote access trojan with various capabilities.

  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Windows security modification 2 TTPs 1 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 5 IoCs
  • Checks whether UAC is enabled 1 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.

  • Program crash 1 IoCs
  • Suspicious use of SetThreadContext 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Mínimo Pedido.exe
    "C:\Users\Admin\AppData\Local\Temp\Mínimo Pedido.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3848
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1052
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4444
      • C:\Users\Admin\AppData\Local\Temp\EGGM.EXE
        "C:\Users\Admin\AppData\Local\Temp\EGGM.EXE"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:4212
      • C:\Users\Admin\AppData\Local\Temp\SERVER.EXE
        "C:\Users\Admin\AppData\Local\Temp\SERVER.EXE"
        3⤵
        • UAC bypass
        • Windows security bypass
        • Executes dropped EXE
        • Windows security modification
        • Checks whether UAC is enabled
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:2076
        • C:\Program Files (x86)\Internet Explorer\iexplore.exe
          C:\Users\Admin\AppData\Local\Temp\SERVER.EXE
          4⤵
          • Adds policy Run key to start application
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:776
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            /stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\ecbhzrooc0.txt"
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3680
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            /stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\ecbhzrooc1.txt"
            5⤵
              PID:2312
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 84
                6⤵
                • Program crash
                PID:4824
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\ecbhzrooc1.txt"
              5⤵
              • Accesses Microsoft Outlook accounts
              PID:4992
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\ecbhzrooc2.txt"
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:3576
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\ecbhzrooc3.txt"
              5⤵
                PID:3328
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                /stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\ecbhzrooc4.txt"
                5⤵
                  PID:1452
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2312 -ip 2312
          1⤵
            PID:2416

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Persistence

          Registry Run Keys / Startup Folder

          2
          T1060

          Privilege Escalation

          Bypass User Account Control

          1
          T1088

          Defense Evasion

          Bypass User Account Control

          1
          T1088

          Disabling Security Tools

          3
          T1089

          Modify Registry

          6
          T1112

          Credential Access

          Credentials in Files

          3
          T1081

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          3
          T1082

          Collection

          Data from Local System

          3
          T1005

          Email Collection

          2
          T1114

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\EGGM.EXE
            Filesize

            126KB

            MD5

            350dfc66657d2d9b2231bf8bfe33497b

            SHA1

            0fb28b28c416d21f1db2d54355e89fa8ec3e3324

            SHA256

            a2bb808321745ce0239b5a84c78a801644d903ce8a6ab87193337aaf2d01fc31

            SHA512

            635132ff935ea13048839d2c535d5abbae53c77d332df7c7628dbbb5db94ffc3b5be7820bb116da94433d6c814b5b4b6811bcc32b22cae3adffb086664e010e5

          • C:\Users\Admin\AppData\Local\Temp\EGGM.EXE
            Filesize

            126KB

            MD5

            350dfc66657d2d9b2231bf8bfe33497b

            SHA1

            0fb28b28c416d21f1db2d54355e89fa8ec3e3324

            SHA256

            a2bb808321745ce0239b5a84c78a801644d903ce8a6ab87193337aaf2d01fc31

            SHA512

            635132ff935ea13048839d2c535d5abbae53c77d332df7c7628dbbb5db94ffc3b5be7820bb116da94433d6c814b5b4b6811bcc32b22cae3adffb086664e010e5

          • C:\Users\Admin\AppData\Local\Temp\SERVER.EXE
            Filesize

            172KB

            MD5

            81912e3dd162ce7c96114a84d0d58b29

            SHA1

            2def8b1c48c9e550f57c9dab915c5232a7113d57

            SHA256

            f91cf396d6cc0e3803aa25fd0770e9a252196ae616e032e4880668c8ded74dc0

            SHA512

            893b3c4483d0a307cad24c73fce27bc4e02438439fc5b07d596146bdb92767e53e60642ff6264ce80891b10c0a7f2a3f5b397560a47ee6e1244d6e5e9a80f341

          • C:\Users\Admin\AppData\Local\Temp\SERVER.EXE
            Filesize

            172KB

            MD5

            81912e3dd162ce7c96114a84d0d58b29

            SHA1

            2def8b1c48c9e550f57c9dab915c5232a7113d57

            SHA256

            f91cf396d6cc0e3803aa25fd0770e9a252196ae616e032e4880668c8ded74dc0

            SHA512

            893b3c4483d0a307cad24c73fce27bc4e02438439fc5b07d596146bdb92767e53e60642ff6264ce80891b10c0a7f2a3f5b397560a47ee6e1244d6e5e9a80f341

          • C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\ecbhzrooc2.txt
            Filesize

            3KB

            MD5

            f94dc819ca773f1e3cb27abbc9e7fa27

            SHA1

            9a7700efadc5ea09ab288544ef1e3cd876255086

            SHA256

            a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

            SHA512

            72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

          • C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\ecbhzrooc4.txt
            Filesize

            2B

            MD5

            f3b25701fe362ec84616a93a45ce9998

            SHA1

            d62636d8caec13f04e28442a0a6fa1afeb024bbb

            SHA256

            b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

            SHA512

            98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

          • memory/1052-137-0x0000000005F30000-0x0000000005F4E000-memory.dmp
            Filesize

            120KB

          • memory/1052-135-0x0000000005010000-0x0000000005076000-memory.dmp
            Filesize

            408KB

          • memory/1052-138-0x0000000007570000-0x0000000007BEA000-memory.dmp
            Filesize

            6.5MB

          • memory/1052-139-0x0000000006430000-0x000000000644A000-memory.dmp
            Filesize

            104KB

          • memory/1052-131-0x0000000000000000-mapping.dmp
          • memory/1052-132-0x0000000000EA0000-0x0000000000ED6000-memory.dmp
            Filesize

            216KB

          • memory/1052-133-0x00000000051C0000-0x00000000057E8000-memory.dmp
            Filesize

            6.2MB

          • memory/1052-134-0x0000000004F70000-0x0000000004F92000-memory.dmp
            Filesize

            136KB

          • memory/1052-136-0x00000000058F0000-0x0000000005956000-memory.dmp
            Filesize

            408KB

          • memory/2076-148-0x0000000000000000-mapping.dmp
          • memory/3848-130-0x00000000005E0000-0x0000000000694000-memory.dmp
            Filesize

            720KB

          • memory/4212-145-0x0000000000000000-mapping.dmp
          • memory/4212-156-0x0000000004930000-0x00000000049CC000-memory.dmp
            Filesize

            624KB

          • memory/4212-151-0x0000000000020000-0x0000000000046000-memory.dmp
            Filesize

            152KB

          • memory/4212-158-0x0000000005DC0000-0x0000000005E52000-memory.dmp
            Filesize

            584KB

          • memory/4212-159-0x0000000005B70000-0x0000000005B7A000-memory.dmp
            Filesize

            40KB

          • memory/4212-157-0x0000000005BF0000-0x0000000005DB2000-memory.dmp
            Filesize

            1.8MB

          • memory/4212-155-0x0000000004E40000-0x00000000053E4000-memory.dmp
            Filesize

            5.6MB

          • memory/4444-142-0x0000000000400000-0x000000000045C000-memory.dmp
            Filesize

            368KB

          • memory/4444-152-0x0000000000400000-0x000000000045C000-memory.dmp
            Filesize

            368KB

          • memory/4444-144-0x0000000000400000-0x000000000045C000-memory.dmp
            Filesize

            368KB

          • memory/4444-143-0x0000000000400000-0x000000000045C000-memory.dmp
            Filesize

            368KB

          • memory/4444-141-0x0000000000400000-0x000000000045C000-memory.dmp
            Filesize

            368KB

          • memory/4444-140-0x0000000000000000-mapping.dmp