Analysis

  • max time kernel
    30s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    24-11-2020 08:24

General

  • Target

    31.exe

  • Size

    12.5MB

  • MD5

    af8e86c5d4198549f6375df9378f983c

  • SHA1

    7ab5ed449b891bd4899fba62d027a2cc26a05e6f

  • SHA256

    7570a7a6830ade05dcf862d5862f12f12445dbd3c0ad7433d90872849e11c267

  • SHA512

    137f5a281aa15802e300872fdf93b9ee014d2077c29d30e5a029664eb0991af2afbe1e5c53a9d7bff8f0508393a8b7641c5a97b4b0e0061befb79a93506c94e1

Malware Config

Extracted

Family

formbook

Version

4.0

C2

http://www.worstig.com/w9z/

Decoy

crazzysex.com

hanferd.com

gteesrd.com

bayfrontbabyplace.com

jicuiquan.net

relationshiplink.net

ohchacyberphoto.com

kauegimenes.com

powerful-seldom.com

ketotoken.com

make-money-online-success.com

redgoldcollection.com

hannan-football.com

hamptondc.com

vllii.com

aa8520.com

platform35markethall.com

larozeimmo.com

oligopoly.net

llhak.info

Extracted

Family

danabot

C2

92.204.160.54

2.56.213.179

45.153.186.47

93.115.21.29

185.45.193.50

193.34.166.247

rsa_pubkey.plain

Extracted

Family

formbook

Version

4.1

C2

http://www.norjax.com/app/

http://www.joomlas123.com/i0qi/

Decoy

niresandcard.com

bonusscommesseonline.com

mezhyhirya.com

paklfz.com

bespokewomensuits.com

smarteralarm.info

munespansiyon.com

pmtradehouse.com

hotmobile-uk.com

ntdao.com

zohariaz.com

www145123.com

oceanstateofstyle.com

palermofelicissima.info

yourkinas.com

pthwheel.net

vfmagent.com

xn--3v0bw66b.com

comsystematrisk.win

on9.party

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

  • Danabot

    Danabot is a modular banking Trojan that has been linked with other malware.

  • Danabot x86 payload 4 IoCs

    Detection of Danabot x86 payload, mapped in memory during the execution of its loader.

  • Dharma

    Dharma is a ransomware that uses security software installation to hide malicious activities.

  • Formbook

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

  • AgentTesla Payload 12 IoCs
  • CryptOne packer 7 IoCs

    Detects CryptOne packer defined in NCC blogpost.

  • Formbook Payload 7 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • ReZer0 packer 3 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

  • Executes dropped EXE 16 IoCs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks QEMU agent file 2 TTPs 1 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Drops startup file 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Obfuscated with Agile.Net obfuscator 1 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 5 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 22 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3012
    • C:\Users\Admin\AppData\Local\Temp\31.exe
      "C:\Users\Admin\AppData\Local\Temp\31.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4748
      • C:\Windows\System32\cmd.exe
        "C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\67C8.tmp\67C9.tmp\67CA.bat C:\Users\Admin\AppData\Local\Temp\31.exe"
        3⤵
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:3472
        • C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe
          "C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\1.jar"
          4⤵
            PID:4232
          • C:\Users\Admin\AppData\Roaming\2.exe
            C:\Users\Admin\AppData\Roaming\2.exe
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:3844
            • C:\Users\Admin\AppData\Roaming\2.exe
              C:\Users\Admin\AppData\Roaming\2.exe
              5⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of AdjustPrivilegeToken
              PID:4400
          • C:\Users\Admin\AppData\Roaming\3.exe
            C:\Users\Admin\AppData\Roaming\3.exe
            4⤵
            • Executes dropped EXE
            • Checks QEMU agent file
            • Adds Run key to start application
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious use of SetThreadContext
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3932
            • C:\Users\Admin\AppData\Roaming\3.exe
              C:\Users\Admin\AppData\Roaming\3.exe
              5⤵
              • Loads dropped DLL
              PID:3992
          • C:\Users\Admin\AppData\Roaming\4.exe
            C:\Users\Admin\AppData\Roaming\4.exe
            4⤵
            • Executes dropped EXE
            PID:4228
          • C:\Users\Admin\AppData\Roaming\5.exe
            C:\Users\Admin\AppData\Roaming\5.exe
            4⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:668
          • C:\Users\Admin\AppData\Roaming\6.exe
            C:\Users\Admin\AppData\Roaming\6.exe
            4⤵
            • Executes dropped EXE
            PID:1180
          • C:\Users\Admin\AppData\Roaming\7.exe
            C:\Users\Admin\AppData\Roaming\7.exe
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:1580
          • C:\Users\Admin\AppData\Roaming\8.exe
            C:\Users\Admin\AppData\Roaming\8.exe
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2144
            • C:\Windows\SysWOW64\cmd.exe
              "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v feeed /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\feeed.exe"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:4048
              • C:\Windows\SysWOW64\reg.exe
                REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v feeed /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\feeed.exe"
                6⤵
                • Adds Run key to start application
                PID:232
          • C:\Users\Admin\AppData\Roaming\9.exe
            C:\Users\Admin\AppData\Roaming\9.exe
            4⤵
            • Executes dropped EXE
            PID:2980
          • C:\Users\Admin\AppData\Roaming\10.exe
            C:\Users\Admin\AppData\Roaming\10.exe
            4⤵
            • Executes dropped EXE
            PID:4524
          • C:\Users\Admin\AppData\Roaming\11.exe
            C:\Users\Admin\AppData\Roaming\11.exe
            4⤵
            • Executes dropped EXE
            • Checks BIOS information in registry
            • Maps connected drives based on registry
            PID:4628
          • C:\Users\Admin\AppData\Roaming\12.exe
            C:\Users\Admin\AppData\Roaming\12.exe
            4⤵
            • Executes dropped EXE
            PID:4728
          • C:\Users\Admin\AppData\Roaming\13.exe
            C:\Users\Admin\AppData\Roaming\13.exe
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:4744
          • C:\Users\Admin\AppData\Roaming\14.exe
            C:\Users\Admin\AppData\Roaming\14.exe
            4⤵
            • Executes dropped EXE
            PID:4676
          • C:\Users\Admin\AppData\Roaming\15.exe
            C:\Users\Admin\AppData\Roaming\15.exe
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:4000
          • C:\Users\Admin\AppData\Roaming\16.exe
            C:\Users\Admin\AppData\Roaming\16.exe
            4⤵
            • Executes dropped EXE
            • Drops startup file
            • Adds Run key to start application
            • Drops file in System32 directory
            • Suspicious behavior: EnumeratesProcesses
            PID:4272
            • C:\Windows\system32\cmd.exe
              "C:\Windows\system32\cmd.exe"
              5⤵
                PID:4068
        • C:\Windows\SysWOW64\cmmon32.exe
          "C:\Windows\SysWOW64\cmmon32.exe"
          2⤵
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1564
          • C:\Windows\SysWOW64\cmd.exe
            /c del "C:\Users\Admin\AppData\Roaming\2.exe"
            3⤵
              PID:4472

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/580-291-0x0000000070850000-0x0000000070F3E000-memory.dmp

          Filesize

          6.9MB

        • memory/580-415-0x0000000004FF0000-0x0000000004FF1000-memory.dmp

          Filesize

          4KB

        • memory/580-285-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/880-274-0x0000000001750000-0x0000000001751000-memory.dmp

          Filesize

          4KB

        • memory/880-267-0x0000000000D80000-0x0000000000D81000-memory.dmp

          Filesize

          4KB

        • memory/880-264-0x0000000070850000-0x0000000070F3E000-memory.dmp

          Filesize

          6.9MB

        • memory/880-310-0x00000000059F0000-0x0000000005B82000-memory.dmp

          Filesize

          1.6MB

        • memory/880-323-0x00000000057B0000-0x00000000057B1000-memory.dmp

          Filesize

          4KB

        • memory/880-327-0x0000000005E80000-0x0000000005E81000-memory.dmp

          Filesize

          4KB

        • memory/1116-420-0x0000000003630000-0x0000000003631000-memory.dmp

          Filesize

          4KB

        • memory/1180-39-0x0000000001F70000-0x0000000001F80000-memory.dmp

          Filesize

          64KB

        • memory/1564-54-0x0000000000CD0000-0x0000000000CDC000-memory.dmp

          Filesize

          48KB

        • memory/1564-159-0x0000000005B50000-0x0000000005CA1000-memory.dmp

          Filesize

          1.3MB

        • memory/1564-55-0x0000000000CD0000-0x0000000000CDC000-memory.dmp

          Filesize

          48KB

        • memory/1752-352-0x0000000070850000-0x0000000070F3E000-memory.dmp

          Filesize

          6.9MB

        • memory/1752-348-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/2088-329-0x00000000088F0000-0x0000000008943000-memory.dmp

          Filesize

          332KB

        • memory/2088-306-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

          Filesize

          4KB

        • memory/2088-304-0x0000000070850000-0x0000000070F3E000-memory.dmp

          Filesize

          6.9MB

        • memory/2140-387-0x0000000005A70000-0x0000000005BC0000-memory.dmp

          Filesize

          1.3MB

        • memory/2140-279-0x0000000000A00000-0x0000000000A20000-memory.dmp

          Filesize

          128KB

        • memory/2140-276-0x0000000000A00000-0x0000000000A20000-memory.dmp

          Filesize

          128KB

        • memory/2144-75-0x0000000005940000-0x0000000005942000-memory.dmp

          Filesize

          8KB

        • memory/2144-57-0x0000000002FD0000-0x0000000002FDF000-memory.dmp

          Filesize

          60KB

        • memory/2144-61-0x0000000002FE0000-0x0000000002FE2000-memory.dmp

          Filesize

          8KB

        • memory/2144-47-0x0000000070850000-0x0000000070F3E000-memory.dmp

          Filesize

          6.9MB

        • memory/2144-63-0x0000000005840000-0x0000000005841000-memory.dmp

          Filesize

          4KB

        • memory/2144-58-0x0000000005C90000-0x0000000005C91000-memory.dmp

          Filesize

          4KB

        • memory/2144-76-0x0000000005BF0000-0x0000000005BF1000-memory.dmp

          Filesize

          4KB

        • memory/2144-78-0x0000000005950000-0x0000000005952000-memory.dmp

          Filesize

          8KB

        • memory/2144-49-0x0000000000E40000-0x0000000000E41000-memory.dmp

          Filesize

          4KB

        • memory/2980-89-0x00000000056B0000-0x00000000056B2000-memory.dmp

          Filesize

          8KB

        • memory/2980-79-0x0000000005240000-0x0000000005241000-memory.dmp

          Filesize

          4KB

        • memory/2980-93-0x0000000008A40000-0x0000000008A41000-memory.dmp

          Filesize

          4KB

        • memory/2980-66-0x0000000070850000-0x0000000070F3E000-memory.dmp

          Filesize

          6.9MB

        • memory/2980-69-0x0000000000950000-0x0000000000951000-memory.dmp

          Filesize

          4KB

        • memory/2980-91-0x0000000008930000-0x0000000008983000-memory.dmp

          Filesize

          332KB

        • memory/3012-259-0x00000000067E0000-0x0000000006932000-memory.dmp

          Filesize

          1.3MB

        • memory/3444-248-0x0000000001790000-0x00000000017AE000-memory.dmp

          Filesize

          120KB

        • memory/3444-249-0x0000000001790000-0x00000000017AE000-memory.dmp

          Filesize

          120KB

        • memory/3524-198-0x0000000004B10000-0x0000000004B4A000-memory.dmp

          Filesize

          232KB

        • memory/3524-189-0x0000000000250000-0x0000000000251000-memory.dmp

          Filesize

          4KB

        • memory/3524-195-0x00000000024F0000-0x000000000253D000-memory.dmp

          Filesize

          308KB

        • memory/3524-186-0x0000000070850000-0x0000000070F3E000-memory.dmp

          Filesize

          6.9MB

        • memory/3868-242-0x0000000000400000-0x000000000042D000-memory.dmp

          Filesize

          180KB

        • memory/3940-282-0x0000000003170000-0x0000000003171000-memory.dmp

          Filesize

          4KB

        • memory/3940-277-0x0000000002F13000-0x0000000002F14000-memory.dmp

          Filesize

          4KB

        • memory/3996-365-0x0000000070850000-0x0000000070F3E000-memory.dmp

          Filesize

          6.9MB

        • memory/3996-349-0x0000000000400000-0x0000000000452000-memory.dmp

          Filesize

          328KB

        • memory/4228-122-0x0000000003700000-0x0000000003701000-memory.dmp

          Filesize

          4KB

        • memory/4400-18-0x0000000000400000-0x000000000042D000-memory.dmp

          Filesize

          180KB

        • memory/4476-269-0x0000000000400000-0x000000000044E000-memory.dmp

          Filesize

          312KB

        • memory/4524-139-0x0000000003053000-0x0000000003054000-memory.dmp

          Filesize

          4KB

        • memory/4524-141-0x0000000003140000-0x0000000003141000-memory.dmp

          Filesize

          4KB

        • memory/4676-230-0x00000000031E0000-0x00000000031E1000-memory.dmp

          Filesize

          4KB

        • memory/4676-225-0x0000000003003000-0x0000000003004000-memory.dmp

          Filesize

          4KB

        • memory/4712-281-0x0000000006C90000-0x0000000006C91000-memory.dmp

          Filesize

          4KB

        • memory/4712-202-0x0000000070850000-0x0000000070F3E000-memory.dmp

          Filesize

          6.9MB

        • memory/4804-338-0x0000000000FD0000-0x0000000000FD1000-memory.dmp

          Filesize

          4KB

        • memory/4804-336-0x0000000070850000-0x0000000070F3E000-memory.dmp

          Filesize

          6.9MB

        • memory/4804-389-0x00000000090B0000-0x0000000009101000-memory.dmp

          Filesize

          324KB

        • memory/4804-368-0x0000000005820000-0x000000000587D000-memory.dmp

          Filesize

          372KB

        • memory/4840-408-0x00000000026B0000-0x00000000026B1000-memory.dmp

          Filesize

          4KB