Analysis

  • max time kernel
    150s
  • max time network
    71s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    26-02-2021 10:12

General

  • Target

    RFQ.exe

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1430995407:AAHXagqOb3lOiloF-tdsg1GOLPStlDuzDNw/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:636
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nWlomDVuvkU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF5EA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2608
    • C:\Users\Admin\AppData\Local\Temp\RFQ.exe
      "C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
      2⤵
        PID:1592
      • C:\Users\Admin\AppData\Local\Temp\RFQ.exe
        "C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3876

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\RFQ.exe.log
      MD5

      90acfd72f14a512712b1a7380c0faf60

      SHA1

      40ba4accb8faa75887e84fb8e38d598dc8cf0f12

      SHA256

      20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

      SHA512

      29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

    • C:\Users\Admin\AppData\Local\Temp\tmpF5EA.tmp
      MD5

      d2aee1103ce6c6b02512b22a3e755d7e

      SHA1

      da330cb8b0bdf91bd7bd84212b37cb1fc7ece106

      SHA256

      b3288c2a253ec3f91d19bc12b97491a10614c1bf7583da3a8ecba92b384b5884

      SHA512

      2cd3d86fc8107b7b38e3a43c4a3ef34590f9f2072f5585628237763dd942411a30d3c1af4f81c28b887045a366209c9847c72bc3393738ecf114243d1cfce544

    • memory/636-11-0x00000000089F0000-0x00000000089F3000-memory.dmp
      Filesize

      12KB

    • memory/636-5-0x0000000005360000-0x0000000005361000-memory.dmp
      Filesize

      4KB

    • memory/636-7-0x0000000005540000-0x0000000005541000-memory.dmp
      Filesize

      4KB

    • memory/636-8-0x00000000057B0000-0x00000000057B1000-memory.dmp
      Filesize

      4KB

    • memory/636-9-0x0000000002EF0000-0x0000000002EF1000-memory.dmp
      Filesize

      4KB

    • memory/636-10-0x00000000054A0000-0x00000000054A1000-memory.dmp
      Filesize

      4KB

    • memory/636-2-0x0000000073F80000-0x000000007466E000-memory.dmp
      Filesize

      6.9MB

    • memory/636-12-0x0000000002B20000-0x0000000002B7C000-memory.dmp
      Filesize

      368KB

    • memory/636-3-0x0000000000970000-0x0000000000971000-memory.dmp
      Filesize

      4KB

    • memory/636-6-0x00000000059A0000-0x00000000059A1000-memory.dmp
      Filesize

      4KB

    • memory/2608-13-0x0000000000000000-mapping.dmp
    • memory/3876-15-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/3876-16-0x000000000043765E-mapping.dmp
    • memory/3876-18-0x0000000073F80000-0x000000007466E000-memory.dmp
      Filesize

      6.9MB

    • memory/3876-23-0x0000000005490000-0x0000000005491000-memory.dmp
      Filesize

      4KB

    • memory/3876-24-0x0000000005A00000-0x0000000005A01000-memory.dmp
      Filesize

      4KB

    • memory/3876-25-0x00000000061C0000-0x00000000061C1000-memory.dmp
      Filesize

      4KB