Analysis

  • max time kernel
    151s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    21-02-2022 11:06

General

  • Target

    YyeznSFcE5IUYLS.exe

  • Size

    936KB

  • MD5

    49ad4e42ac4829d60cb703811a951363

  • SHA1

    d0deb06327fc6545177fabaaff9a14312a9e2d2c

  • SHA256

    a5eb38594eb57ed5010a258b0f35aa3647243e8eb5ba4474eee9808abcaeb149

  • SHA512

    7a144c931c1b313f4783c1b11e7df41ac1a893bfb80dce5942eb75e8b0e9533c3de7cf720444070df4d95dc730227e71b0542e769fc6a41e22008d901d141700

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    MARYolanmauluogwo@ever

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 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\YyeznSFcE5IUYLS.exe
    "C:\Users\Admin\AppData\Local\Temp\YyeznSFcE5IUYLS.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1340
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XvrLwUcwoTObw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8556.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1212
    • C:\Users\Admin\AppData\Local\Temp\YyeznSFcE5IUYLS.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1148
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        dw20.exe -x -s 516
        3⤵
        • Suspicious behavior: GetForegroundWindowSpam
        PID:1180

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8556.tmp

    MD5

    9c0f2ed0a095047a5b4633d9fc2a5cb3

    SHA1

    dc71a37efd0a07f94e188b4628a08fa043013897

    SHA256

    cb978b6f4b93ad6f8cfb7203d995be6273e5dafccb46a1937c2d40455ca3a3a5

    SHA512

    5156f77b4cd996cabebcdfe745ab2e0f766e1b7a0fd75d14ee3fd77baf5286b1c35b72207237f15f6c7385bc1b54c99f748e52707693f48d20c6c900ec445aa2

  • memory/1148-63-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/1148-67-0x00000000002B0000-0x00000000002B1000-memory.dmp

    Filesize

    4KB

  • memory/1148-68-0x0000000074732000-0x0000000074734000-memory.dmp

    Filesize

    8KB

  • memory/1148-66-0x0000000074731000-0x0000000074732000-memory.dmp

    Filesize

    4KB

  • memory/1148-64-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/1148-60-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/1148-61-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/1148-62-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/1180-70-0x00000000004E0000-0x00000000004E1000-memory.dmp

    Filesize

    4KB

  • memory/1340-54-0x0000000074731000-0x0000000074732000-memory.dmp

    Filesize

    4KB

  • memory/1340-55-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

    Filesize

    8KB

  • memory/1340-56-0x0000000000730000-0x0000000000731000-memory.dmp

    Filesize

    4KB

  • memory/1340-58-0x0000000000731000-0x0000000000732000-memory.dmp

    Filesize

    4KB

  • memory/1340-57-0x0000000074732000-0x0000000074734000-memory.dmp

    Filesize

    8KB