Analysis

  • max time kernel
    42s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    30-03-2023 12:50

General

  • Target

    qFbGYuKhG1.exe

  • Size

    647KB

  • MD5

    4f34b0b75d7b9ebf3fbd77915cba976f

  • SHA1

    6b8a77a3a2c4a24c8ad7837fbf4c36e822953345

  • SHA256

    7333b7b77d906d10a63058e19f45e6cacd7c0295b229910cf30e5449085b365f

  • SHA512

    c378d935732dd002d850e207a74b7927924c26152e06250c9a02aca4c1e550953d9fd26d7d52566d7d51792a58177346eb2a3af7be2f737f06af2db259682ba3

  • SSDEEP

    12288:MQw8m/eoBcBWYwywwpyuTdHEnyzW8M1s9d8fYf9/Ksq/KsI/Ksp:qNBcBWYYwD+KW8HkMtio5

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.kumbarasigorta.com
  • Port:
    587
  • Username:
    ceren@kumbarasigorta.com
  • Password:
    Ceren1234.
  • Email To:
    jodyfuller356@gmail.com

Signatures

  • AgentTesla

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 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.

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\qFbGYuKhG1.exe
    "C:\Users\Admin\AppData\Local\Temp\qFbGYuKhG1.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1952
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:568
    • C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD89.tmp.bat""
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1184
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2020
      • C:\Users\Admin\AppData\Roaming\svchost.exe
        "C:\Users\Admin\AppData\Roaming\svchost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1708
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
          "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe"
          4⤵
            PID:1452
          • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe
            "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe"
            4⤵
              PID:1512
            • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
              "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"
              4⤵
                PID:1688
              • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regsql.exe
                "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regsql.exe"
                4⤵
                  PID:1396
                • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegSvcs.exe
                  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegSvcs.exe"
                  4⤵
                    PID:1328
                  • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Workflow.Compiler.exe
                    "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Workflow.Compiler.exe"
                    4⤵
                      PID:1668
                    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ServiceModelReg.exe
                      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ServiceModelReg.exe"
                      4⤵
                        PID:1664
                      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\jsc.exe
                        "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\jsc.exe"
                        4⤵
                        • Accesses Microsoft Outlook profiles
                        • Suspicious use of AdjustPrivilegeToken
                        • outlook_office_path
                        • outlook_win_path
                        PID:892

                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

                1
                T1082

                Query Registry

                1
                T1012

                Collection

                Email Collection

                1
                T1114

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\Users\Admin\AppData\Local\Temp\tmpD89.tmp.bat
                  Filesize

                  150B

                  MD5

                  a03fbc7f247f18701078640aab9ef542

                  SHA1

                  5a8dab9097d3e2cf67b79f703af7f5b145fb59d9

                  SHA256

                  a92a9263d3d021d735a8b09413ff8d1904020fb9ecff2c48590b6f31cd51c643

                  SHA512

                  d83a3b7fd9a48a4db39d25d7fcbdcee7b0240c19771e5d6a27ab2a5b38257fbcdfee8fc7302cc779388b1c6d64709a92618f8e9f9c30e37d3cd596796c2557c4

                • C:\Users\Admin\AppData\Local\Temp\tmpD89.tmp.bat
                  Filesize

                  150B

                  MD5

                  a03fbc7f247f18701078640aab9ef542

                  SHA1

                  5a8dab9097d3e2cf67b79f703af7f5b145fb59d9

                  SHA256

                  a92a9263d3d021d735a8b09413ff8d1904020fb9ecff2c48590b6f31cd51c643

                  SHA512

                  d83a3b7fd9a48a4db39d25d7fcbdcee7b0240c19771e5d6a27ab2a5b38257fbcdfee8fc7302cc779388b1c6d64709a92618f8e9f9c30e37d3cd596796c2557c4

                • C:\Users\Admin\AppData\Roaming\svchost.exe
                  Filesize

                  647KB

                  MD5

                  4f34b0b75d7b9ebf3fbd77915cba976f

                  SHA1

                  6b8a77a3a2c4a24c8ad7837fbf4c36e822953345

                  SHA256

                  7333b7b77d906d10a63058e19f45e6cacd7c0295b229910cf30e5449085b365f

                  SHA512

                  c378d935732dd002d850e207a74b7927924c26152e06250c9a02aca4c1e550953d9fd26d7d52566d7d51792a58177346eb2a3af7be2f737f06af2db259682ba3

                • C:\Users\Admin\AppData\Roaming\svchost.exe
                  Filesize

                  647KB

                  MD5

                  4f34b0b75d7b9ebf3fbd77915cba976f

                  SHA1

                  6b8a77a3a2c4a24c8ad7837fbf4c36e822953345

                  SHA256

                  7333b7b77d906d10a63058e19f45e6cacd7c0295b229910cf30e5449085b365f

                  SHA512

                  c378d935732dd002d850e207a74b7927924c26152e06250c9a02aca4c1e550953d9fd26d7d52566d7d51792a58177346eb2a3af7be2f737f06af2db259682ba3

                • \Users\Admin\AppData\Roaming\svchost.exe
                  Filesize

                  647KB

                  MD5

                  4f34b0b75d7b9ebf3fbd77915cba976f

                  SHA1

                  6b8a77a3a2c4a24c8ad7837fbf4c36e822953345

                  SHA256

                  7333b7b77d906d10a63058e19f45e6cacd7c0295b229910cf30e5449085b365f

                  SHA512

                  c378d935732dd002d850e207a74b7927924c26152e06250c9a02aca4c1e550953d9fd26d7d52566d7d51792a58177346eb2a3af7be2f737f06af2db259682ba3

                • memory/892-72-0x0000000000400000-0x0000000000430000-memory.dmp
                  Filesize

                  192KB

                • memory/892-74-0x0000000000400000-0x0000000000430000-memory.dmp
                  Filesize

                  192KB

                • memory/892-76-0x0000000000400000-0x0000000000430000-memory.dmp
                  Filesize

                  192KB

                • memory/892-77-0x0000000004D70000-0x0000000004DB0000-memory.dmp
                  Filesize

                  256KB

                • memory/892-78-0x0000000004D70000-0x0000000004DB0000-memory.dmp
                  Filesize

                  256KB

                • memory/1708-70-0x0000000000980000-0x0000000000A24000-memory.dmp
                  Filesize

                  656KB

                • memory/1708-71-0x00000000004D0000-0x0000000000550000-memory.dmp
                  Filesize

                  512KB

                • memory/2044-56-0x00000000021B0000-0x000000000221E000-memory.dmp
                  Filesize

                  440KB

                • memory/2044-55-0x0000000002250000-0x00000000022D0000-memory.dmp
                  Filesize

                  512KB

                • memory/2044-54-0x0000000000D00000-0x0000000000DA4000-memory.dmp
                  Filesize

                  656KB