Analysis

  • max time kernel
    107s
  • max time network
    55s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    22-07-2021 09:02

General

  • Target

    RFQ#000002720212207.exe

  • Size

    734KB

  • MD5

    2e21013d8666ba1eaf72238befc4889c

  • SHA1

    f5052e76d0dd47411987d4a4de27fc849e1c9a55

  • SHA256

    fbadf252eb04bc791373500dd2b28c45ef60bf5f34c711c4bff61fe5230c056c

  • SHA512

    b7a76de69bceaa94739f5badd30fa34c04ab88e4cadcb88fe144b52315d69b9a9fde58fc68967c460acc7f3f53af4bf0029974b8906e5145004704737ced5ec9

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.kemkan.net
  • Port:
    587
  • Username:
    procure@kemkan.net
  • Password:
    investment123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Adds Run key to start application 2 TTPs 1 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.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ#000002720212207.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ#000002720212207.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:604
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ulcNjcp" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF650.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:568
    • C:\Users\Admin\AppData\Local\Temp\RFQ#000002720212207.exe
      "C:\Users\Admin\AppData\Local\Temp\RFQ#000002720212207.exe"
      2⤵
        PID:1400
      • C:\Users\Admin\AppData\Local\Temp\RFQ#000002720212207.exe
        "C:\Users\Admin\AppData\Local\Temp\RFQ#000002720212207.exe"
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1072

    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

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpF650.tmp
      MD5

      54febf9601d1e585eb99cbc8498dc16c

      SHA1

      555860dd132c76855c504a0dfba9f8943ba9ca46

      SHA256

      329e72f846d74b113d8e2d9aaa9f33400f6cbcb761535e5a9b4fb75eb412babf

      SHA512

      cfcee7896c463844b1e3bbc5580b7917f93e5b8e704750aa1700656c16c225a4202555fa48f9093fe291c6c528d15ab9a9965f5da9f06c9bfbea41def5670d5f

    • memory/568-66-0x0000000000000000-mapping.dmp
    • memory/604-59-0x00000000000D0000-0x00000000000D1000-memory.dmp
      Filesize

      4KB

    • memory/604-61-0x0000000006EC0000-0x0000000006F72000-memory.dmp
      Filesize

      712KB

    • memory/604-62-0x0000000000480000-0x0000000000481000-memory.dmp
      Filesize

      4KB

    • memory/604-63-0x0000000000340000-0x000000000035B000-memory.dmp
      Filesize

      108KB

    • memory/604-64-0x0000000005170000-0x00000000051EC000-memory.dmp
      Filesize

      496KB

    • memory/604-65-0x0000000001F50000-0x0000000001F8D000-memory.dmp
      Filesize

      244KB

    • memory/1072-69-0x000000000043759E-mapping.dmp
    • memory/1072-68-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1072-70-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1072-72-0x0000000004A40000-0x0000000004A41000-memory.dmp
      Filesize

      4KB