Analysis

  • max time kernel
    146s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    11-05-2021 12:48

General

  • Target

    Project Enquiry - KHI To LSG.exe

  • Size

    853KB

  • MD5

    c895410694b7aaed3c3495536c240a93

  • SHA1

    3abe57e1d7073caf1711dbc4bd82df7379f47211

  • SHA256

    5a8ea261a8f88443529553058026027054b62c7dc2969632de08212db8293e27

  • SHA512

    9fb79b5301ef47f5389cc5a08de07fd26f383d77d3d1578f3de7dfaebdd19a586360c006c9cdbd86efb60a38c7e0fc39548cd39a8e96cde6110a76ec53f5a9cb

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1855581212:AAGSsAgiKOAKCEx8_hulz-BQit55_qDVNsM/sendDocument

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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Project Enquiry - KHI To LSG.exe
    "C:\Users\Admin\AppData\Local\Temp\Project Enquiry - KHI To LSG.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1840
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gzrJtoA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp52E1.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:788
    • C:\Users\Admin\AppData\Local\Temp\Project Enquiry - KHI To LSG.exe
      "C:\Users\Admin\AppData\Local\Temp\Project Enquiry - KHI To LSG.exe"
      2⤵
        PID:1016
      • C:\Users\Admin\AppData\Local\Temp\Project Enquiry - KHI To LSG.exe
        "C:\Users\Admin\AppData\Local\Temp\Project Enquiry - KHI To LSG.exe"
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1852

    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\tmp52E1.tmp
      MD5

      8e33069f8d392b6ab62477377a9a6097

      SHA1

      68a27020cc6203e3a4fa92a8197f0bf2729f09c2

      SHA256

      718bf2226dc2755c3730643cf52bcf2b5d16863126bb1081500187478d368673

      SHA512

      39a287375fe594b00b1dc50b615516f7c91061b5a15c0244eb71d4814234b769cacf4b00a2c6001e89e0b258678de02a53f4f3a82e23687a9cd12fde5096239c

    • memory/788-66-0x0000000000000000-mapping.dmp
    • memory/1840-60-0x00000000002E0000-0x00000000002E1000-memory.dmp
      Filesize

      4KB

    • memory/1840-62-0x00000000005F0000-0x00000000005F4000-memory.dmp
      Filesize

      16KB

    • memory/1840-63-0x0000000004D00000-0x0000000004D01000-memory.dmp
      Filesize

      4KB

    • memory/1840-64-0x0000000005270000-0x000000000532D000-memory.dmp
      Filesize

      756KB

    • memory/1840-65-0x0000000005460000-0x00000000054EA000-memory.dmp
      Filesize

      552KB

    • memory/1852-69-0x000000000043774E-mapping.dmp
    • memory/1852-68-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1852-70-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1852-72-0x00000000048B0000-0x00000000048B1000-memory.dmp
      Filesize

      4KB