Analysis

  • max time kernel
    133s
  • max time network
    127s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    15-10-2021 13:18

General

  • Target

    f010795b19f2c56b230b7de0f9803cd3aeea208a.exe

  • Size

    2.0MB

  • MD5

    517e0a4d7e27837a7075615032a6cc69

  • SHA1

    f010795b19f2c56b230b7de0f9803cd3aeea208a

  • SHA256

    f4743b96b2336504bd9b8207b0794da22e9eaf583703a7e3dd58cf872314ac4f

  • SHA512

    5c9f1b9c874587b79852e98fe7adb06f544dbbb5b5af7bd60205cd4c24a43e5ab37d85d4ccb1fb22815942e6546cf936f1caa371718440cd01618094a0f18bb7

Malware Config

Extracted

Family

webmonitor

C2

niiarmah.wm01.to:443

Attributes
  • config_key

    4EcDHH7aWbl50LayUnuRlJWUXiKQWk0O

  • private_key

    yvkn5wM8E

  • url_path

    /recv5.php

Signatures

  • RevcodeRat, WebMonitorRat

    WebMonitor is a remote access tool that you can use from any browser access to control, and monitor your phones, or PCs.

  • WebMonitor Payload 5 IoCs
  • Executes dropped EXE 9 IoCs
  • Obfuscated with Agile.Net obfuscator 3 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 36 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f010795b19f2c56b230b7de0f9803cd3aeea208a.exe
    "C:\Users\Admin\AppData\Local\Temp\f010795b19f2c56b230b7de0f9803cd3aeea208a.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3076
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Updates1" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3764
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Updates1" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe"
        3⤵
        • Adds Run key to start application
        PID:1800
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2732
      • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
        "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3164
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\EbjlEPhYZrruwPz7.bat" "
          4⤵
            PID:508
        • C:\Users\Admin\AppData\Local\Temp\Antivirus.exe
          "C:\Users\Admin\AppData\Local\Temp\Antivirus.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3772
          • C:\Users\Admin\AppData\Local\Temp\Antivirus.exe
            "C:\Users\Admin\AppData\Local\Temp\Antivirus.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:936
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe
              "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe"
              5⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:3064
              • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
                "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:1056
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\OBG7SXrqhKZ2EUzG.bat" "
                  7⤵
                    PID:2936
                • C:\Users\Admin\AppData\Local\Temp\Antivirus.exe
                  "C:\Users\Admin\AppData\Local\Temp\Antivirus.exe"
                  6⤵
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:2104
                  • C:\Users\Admin\AppData\Local\Temp\Antivirus.exe
                    "C:\Users\Admin\AppData\Local\Temp\Antivirus.exe"
                    7⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of WriteProcessMemory
                    PID:1828
                    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe
                      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe"
                      8⤵
                      • Executes dropped EXE
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:2100

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Antivirus.exe.log

        MD5

        e555c48cb712a9597ecb55a60135d1f8

        SHA1

        2081c72d30c34ec3f61f9944545ecdaae11521f7

        SHA256

        815c80df060afa8acf7640ca011735ef77c66666d03901e04a8767827d5da4e9

        SHA512

        32129b5be15217e5400f1e7536270a703d62db60ebb06396b9d74703e6a0dcd2e78f7f42b2019093be1508a9310912f305b88de274a295c9135a4086cd8c8427

      • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

        MD5

        6a673bfc3b67ae9782cb31af2f234c68

        SHA1

        7544e89566d91e84e3cd437b9a073e5f6b56566e

        SHA256

        978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

        SHA512

        72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

      • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

        MD5

        6a673bfc3b67ae9782cb31af2f234c68

        SHA1

        7544e89566d91e84e3cd437b9a073e5f6b56566e

        SHA256

        978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

        SHA512

        72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

      • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

        MD5

        6a673bfc3b67ae9782cb31af2f234c68

        SHA1

        7544e89566d91e84e3cd437b9a073e5f6b56566e

        SHA256

        978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

        SHA512

        72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

      • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

        MD5

        6a673bfc3b67ae9782cb31af2f234c68

        SHA1

        7544e89566d91e84e3cd437b9a073e5f6b56566e

        SHA256

        978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

        SHA512

        72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

      • C:\Users\Admin\AppData\Local\Temp\Antivirus.exe

        MD5

        0e362e7005823d0bec3719b902ed6d62

        SHA1

        590d860b909804349e0cdc2f1662b37bd62f7463

        SHA256

        2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

        SHA512

        518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

      • C:\Users\Admin\AppData\Local\Temp\Antivirus.exe

        MD5

        0e362e7005823d0bec3719b902ed6d62

        SHA1

        590d860b909804349e0cdc2f1662b37bd62f7463

        SHA256

        2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

        SHA512

        518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

      • C:\Users\Admin\AppData\Local\Temp\Antivirus.exe

        MD5

        0e362e7005823d0bec3719b902ed6d62

        SHA1

        590d860b909804349e0cdc2f1662b37bd62f7463

        SHA256

        2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

        SHA512

        518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

      • C:\Users\Admin\AppData\Local\Temp\Antivirus.exe

        MD5

        0e362e7005823d0bec3719b902ed6d62

        SHA1

        590d860b909804349e0cdc2f1662b37bd62f7463

        SHA256

        2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

        SHA512

        518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

      • C:\Users\Admin\AppData\Local\Temp\Antivirus.exe

        MD5

        0e362e7005823d0bec3719b902ed6d62

        SHA1

        590d860b909804349e0cdc2f1662b37bd62f7463

        SHA256

        2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

        SHA512

        518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

      • C:\Users\Admin\AppData\Local\Temp\Antivirus.exe

        MD5

        0e362e7005823d0bec3719b902ed6d62

        SHA1

        590d860b909804349e0cdc2f1662b37bd62f7463

        SHA256

        2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

        SHA512

        518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

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

        MD5

        9645e6b93540af9a2685b56af7690f00

        SHA1

        3ed8e7878530bcb36b46102269ca310d5344b0f5

        SHA256

        3ba733df0be5cfecb43071fd9aebcad06ac72f95ecd4e192bb60900861329fbe

        SHA512

        2896aa545d24988498e1624bbd578a43e83ed3d47d9295b8b6df915acfe406397cd2eef97d333c19f7a891b794861fa7c40e0da678ab381700f9bf39a1a44b66

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

        MD5

        d41d8cd98f00b204e9800998ecf8427e

        SHA1

        da39a3ee5e6b4b0d3255bfef95601890afd80709

        SHA256

        e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

        SHA512

        cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

        MD5

        7c87f318bfe704744949d8bfb18dcdb2

        SHA1

        ebee0173c45249cc66d35782da4f1a340e647226

        SHA256

        38597d479702d1e00667e0cba367bfa24cb5bbca9b9fdf30eff8e8d65b112e0e

        SHA512

        b3c0b19fc1bed3f861fbca2fa30faa1065edf50be1e9f91edf7fad6d30ccc858a10830a53ff8b350bd6a7afaf0626bcabca5f1d52d62fa75094e100465399a08

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

        MD5

        04077d0b6687f2a24aceb7349fdd9e8e

        SHA1

        e7fbf4442e42886092310d8cd9b75244d22a3d00

        SHA256

        85cf1a2b28a8558fdb4b08dc41f8e9c8c060bbf8e41a453aa691e3a7e155697c

        SHA512

        7a62777ec091fbbc0f244b6f145bf6b3bc3081ea18d1db51b87ff7f6441c2595e5c9b0182f7baf3f3e88053f4a2fbd1b5039049ba83933757607342f4056a23b

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

        MD5

        18eb793e0741851fca2ccb9af2c6180e

        SHA1

        c55fec61cd7736b8ddc627455dd73b60eb577a91

        SHA256

        dc2ef2954786e10a43d0053b4bc86c279aa9a18c9d8037ef735ed9b640f8a300

        SHA512

        baad68c3ae094686cbf3d876a0f3be9aba3c8906f3d85287d2f3263cfd317d838c240823a3e27e7af013776657ea7fbceb6407bd4a757b5671d6a4e8a0ef5c00

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

        MD5

        a597e5024aab77709b19f82d3a30ea52

        SHA1

        75a4124d1edb23e413b9d55a04123b63eab3805f

        SHA256

        dbf47ac8fb9917a763d7e64c8c3b5b6d54cab551d6215724aa79fda7bc308df7

        SHA512

        a18ef7404e0d0471a0e55d44488c738990234c776fbb8cc98548a6ea6d6ab046016c19484ca3c80a8490e6c574a098c6ebf2c70e54059e0b175d396c50c7f64d

      • C:\Users\Admin\AppData\Local\Temp\EbjlEPhYZrruwPz7.bat

        MD5

        740511442c52a9a5289c8564e7466cc4

        SHA1

        50612d4a77d45f2dffa972a1ace9c6aef7f5409a

        SHA256

        87e0d41166398a0f31cac60abdac3f26c2750a36b3c8dfc330f742454dd47eac

        SHA512

        f978549d0cf95a4bd2c8e696ba9d6ea81cf108660af099e7ba91c2c3c7bcc198fdd870856ea4e9698337ff4fcc463db711f0b2f90c9ca09d6f48db1ea89ddc5c

      • C:\Users\Admin\AppData\Local\Temp\OBG7SXrqhKZ2EUzG.bat

        MD5

        b1d0e249ce0f7a9919cf5adcb1ea02c6

        SHA1

        2c2d53e8caa08b213584ad834ef7a4935e7c8851

        SHA256

        e9d143c1b1d7f2bed5d0ab36c6ebb3ac28063479c36313117f8b6056fd7c3d60

        SHA512

        6787789edbf94c6184c2720ad9bff6a0dd9c60235fb94af1b6db9e0aac5b9f5a063f5f7ed34b496ae68a939965429d53f52da1ff84da4343cb390948df70b1df

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe

        MD5

        517e0a4d7e27837a7075615032a6cc69

        SHA1

        f010795b19f2c56b230b7de0f9803cd3aeea208a

        SHA256

        f4743b96b2336504bd9b8207b0794da22e9eaf583703a7e3dd58cf872314ac4f

        SHA512

        5c9f1b9c874587b79852e98fe7adb06f544dbbb5b5af7bd60205cd4c24a43e5ab37d85d4ccb1fb22815942e6546cf936f1caa371718440cd01618094a0f18bb7

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe

        MD5

        517e0a4d7e27837a7075615032a6cc69

        SHA1

        f010795b19f2c56b230b7de0f9803cd3aeea208a

        SHA256

        f4743b96b2336504bd9b8207b0794da22e9eaf583703a7e3dd58cf872314ac4f

        SHA512

        5c9f1b9c874587b79852e98fe7adb06f544dbbb5b5af7bd60205cd4c24a43e5ab37d85d4ccb1fb22815942e6546cf936f1caa371718440cd01618094a0f18bb7

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe

        MD5

        517e0a4d7e27837a7075615032a6cc69

        SHA1

        f010795b19f2c56b230b7de0f9803cd3aeea208a

        SHA256

        f4743b96b2336504bd9b8207b0794da22e9eaf583703a7e3dd58cf872314ac4f

        SHA512

        5c9f1b9c874587b79852e98fe7adb06f544dbbb5b5af7bd60205cd4c24a43e5ab37d85d4ccb1fb22815942e6546cf936f1caa371718440cd01618094a0f18bb7

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Updates.exe

        MD5

        517e0a4d7e27837a7075615032a6cc69

        SHA1

        f010795b19f2c56b230b7de0f9803cd3aeea208a

        SHA256

        f4743b96b2336504bd9b8207b0794da22e9eaf583703a7e3dd58cf872314ac4f

        SHA512

        5c9f1b9c874587b79852e98fe7adb06f544dbbb5b5af7bd60205cd4c24a43e5ab37d85d4ccb1fb22815942e6546cf936f1caa371718440cd01618094a0f18bb7

      • memory/508-177-0x0000000000000000-mapping.dmp

      • memory/936-155-0x0000000000000000-mapping.dmp

      • memory/1056-184-0x0000000000400000-0x00000000004F3000-memory.dmp

        Filesize

        972KB

      • memory/1056-182-0x000000000049D8CA-mapping.dmp

      • memory/1800-126-0x0000000000000000-mapping.dmp

      • memory/1828-192-0x0000000000000000-mapping.dmp

      • memory/2100-211-0x0000000006501000-0x0000000006502000-memory.dmp

        Filesize

        4KB

      • memory/2100-199-0x0000000000000000-mapping.dmp

      • memory/2100-210-0x0000000006500000-0x0000000006501000-memory.dmp

        Filesize

        4KB

      • memory/2104-185-0x0000000000000000-mapping.dmp

      • memory/2732-142-0x00000000075E0000-0x00000000075EB000-memory.dmp

        Filesize

        44KB

      • memory/2732-128-0x0000000000000000-mapping.dmp

      • memory/2732-143-0x00000000075F0000-0x00000000075F1000-memory.dmp

        Filesize

        4KB

      • memory/2732-140-0x0000000005C40000-0x0000000005C41000-memory.dmp

        Filesize

        4KB

      • memory/2732-141-0x0000000005C41000-0x0000000005C42000-memory.dmp

        Filesize

        4KB

      • memory/2936-213-0x0000000000000000-mapping.dmp

      • memory/3064-169-0x0000000005AF0000-0x0000000005AF1000-memory.dmp

        Filesize

        4KB

      • memory/3064-174-0x0000000005970000-0x0000000005A02000-memory.dmp

        Filesize

        584KB

      • memory/3064-175-0x0000000005970000-0x0000000005A02000-memory.dmp

        Filesize

        584KB

      • memory/3064-162-0x0000000000000000-mapping.dmp

      • memory/3076-120-0x00000000052F0000-0x00000000052F1000-memory.dmp

        Filesize

        4KB

      • memory/3076-127-0x0000000004D60000-0x0000000004DF2000-memory.dmp

        Filesize

        584KB

      • memory/3076-124-0x00000000064A0000-0x00000000064A1000-memory.dmp

        Filesize

        4KB

      • memory/3076-123-0x00000000064D0000-0x00000000064D1000-memory.dmp

        Filesize

        4KB

      • memory/3076-122-0x00000000053D0000-0x00000000053F1000-memory.dmp

        Filesize

        132KB

      • memory/3076-117-0x0000000005400000-0x0000000005401000-memory.dmp

        Filesize

        4KB

      • memory/3076-121-0x0000000004D60000-0x0000000004DF2000-memory.dmp

        Filesize

        584KB

      • memory/3076-115-0x0000000000380000-0x0000000000381000-memory.dmp

        Filesize

        4KB

      • memory/3076-119-0x0000000004F00000-0x0000000004F01000-memory.dmp

        Filesize

        4KB

      • memory/3076-118-0x0000000004E00000-0x0000000004E01000-memory.dmp

        Filesize

        4KB

      • memory/3164-147-0x0000000000400000-0x00000000004F3000-memory.dmp

        Filesize

        972KB

      • memory/3164-144-0x0000000000400000-0x00000000004F3000-memory.dmp

        Filesize

        972KB

      • memory/3164-145-0x000000000049D8CA-mapping.dmp

      • memory/3764-125-0x0000000000000000-mapping.dmp

      • memory/3772-151-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

        Filesize

        4KB

      • memory/3772-148-0x0000000000000000-mapping.dmp