Analysis

  • max time kernel
    114s
  • max time network
    110s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    21-04-2021 16:05

General

  • Target

    e209b671ef6ce034fa39474b107f4eb8.exe

  • Size

    983KB

  • MD5

    e209b671ef6ce034fa39474b107f4eb8

  • SHA1

    c36f2e6b420f734d106f0eb3b89d210f17cf4022

  • SHA256

    001706c59174b47d3adb36f4d33ec09088af0f5899807e418a46d8747b07bab7

  • SHA512

    608cc46338f851e5216cd7e8ed4aa173473abde2d482166acbfa012245c86aac4ed6111b35e012c4cf89f0367618a723079e3f48435f457d2795efde70b3485d

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.cerak.co.rs
  • Port:
    587
  • Username:
    pedja@cerak.co.rs
  • Password:
    isidora456

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 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\e209b671ef6ce034fa39474b107f4eb8.exe
    "C:\Users\Admin\AppData\Local\Temp\e209b671ef6ce034fa39474b107f4eb8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:796
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dvexTmkZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp86D4.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1308
    • C:\Users\Admin\AppData\Local\Temp\e209b671ef6ce034fa39474b107f4eb8.exe
      "{path}"
      2⤵
        PID:740
      • C:\Users\Admin\AppData\Local\Temp\e209b671ef6ce034fa39474b107f4eb8.exe
        "{path}"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3768

    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\e209b671ef6ce034fa39474b107f4eb8.exe.log
      MD5

      0c2899d7c6746f42d5bbe088c777f94c

      SHA1

      622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

      SHA256

      5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

      SHA512

      ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

    • C:\Users\Admin\AppData\Local\Temp\tmp86D4.tmp
      MD5

      3ef38e1c77a9b77cdd92f36ff2899006

      SHA1

      e6101960a5e7c7680c2a4bbde36e44d947e70a31

      SHA256

      8f7d0bb253897030e882209599021e5db4633b47f9e5f34340233f713f387f5f

      SHA512

      34e8d8338890f175cec92c85ad0a65ca52c0a39df5a9ef0dd2888b9538145af51cbd1d2b1c3f0651e0655676006990db1cca38d75bf47f9010869457bfbc1af7

    • memory/796-123-0x0000000009DC0000-0x0000000009E46000-memory.dmp
      Filesize

      536KB

    • memory/796-116-0x0000000005760000-0x0000000005761000-memory.dmp
      Filesize

      4KB

    • memory/796-119-0x0000000005120000-0x0000000005121000-memory.dmp
      Filesize

      4KB

    • memory/796-120-0x0000000007490000-0x0000000007491000-memory.dmp
      Filesize

      4KB

    • memory/796-121-0x0000000005740000-0x000000000574E000-memory.dmp
      Filesize

      56KB

    • memory/796-122-0x00000000076D0000-0x0000000007799000-memory.dmp
      Filesize

      804KB

    • memory/796-114-0x00000000007E0000-0x00000000007E1000-memory.dmp
      Filesize

      4KB

    • memory/796-118-0x0000000005260000-0x000000000575E000-memory.dmp
      Filesize

      4MB

    • memory/796-117-0x00000000051B0000-0x00000000051B1000-memory.dmp
      Filesize

      4KB

    • memory/1308-124-0x0000000000000000-mapping.dmp
    • memory/3768-127-0x000000000043764E-mapping.dmp
    • memory/3768-126-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/3768-133-0x0000000005890000-0x0000000005D8E000-memory.dmp
      Filesize

      4MB

    • memory/3768-134-0x00000000059E0000-0x00000000059E1000-memory.dmp
      Filesize

      4KB

    • memory/3768-135-0x0000000006510000-0x0000000006511000-memory.dmp
      Filesize

      4KB