Analysis

  • max time kernel
    126s
  • max time network
    96s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    26-02-2021 18:12

General

  • Target

    Complaint About Your Company.exe

  • Size

    820KB

  • MD5

    ad8e516a03685e3bbf2cfde99b0a06a9

  • SHA1

    913240ddb22665b0e244cc69eb22aaa8fc3d49f5

  • SHA256

    6d84f67c5ce01feb377d1e1bb8959251aac2e23fac027029e7d3a8548a3300a5

  • SHA512

    eb5dc5763722192f4f0d913bc1d77869470e56b1592c3de9a91ddcf4af8a68373aa1877d5a9a01421f0ba2766266cd8a1e15e7abda14bad912be6ebe1a30b311

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://files.000webhost.com/
  • Port:
    21
  • Username:
    zinco
  • Password:
    computer147

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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Complaint About Your Company.exe
    "C:\Users\Admin\AppData\Local\Temp\Complaint About Your Company.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1308
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DqKHyr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp62B.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1456
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:500

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\Temp\tmp62B.tmp
    MD5

    61774ac0e82942280060943deab6b16c

    SHA1

    03d40491fc609a45fdda436d4b60d77cac2a9032

    SHA256

    63058ecae28367376ce5199c23f5e81ce99990510260e47e553d6026b49b044b

    SHA512

    5d996fbe47a176aada8e8f804388a744fc12752932accdba72d515bf6cea2c15e008efd024cee4c7009209bdd55fec7b8229da74e74f671688ba6886a4f57697

  • memory/500-23-0x0000000005A20000-0x0000000005A21000-memory.dmp
    Filesize

    4KB

  • memory/500-22-0x00000000028A0000-0x00000000028A1000-memory.dmp
    Filesize

    4KB

  • memory/500-21-0x0000000002880000-0x0000000002881000-memory.dmp
    Filesize

    4KB

  • memory/500-16-0x0000000073C50000-0x000000007433E000-memory.dmp
    Filesize

    6.9MB

  • memory/500-15-0x00000000004375DE-mapping.dmp
  • memory/500-14-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1308-7-0x0000000005810000-0x0000000005811000-memory.dmp
    Filesize

    4KB

  • memory/1308-11-0x0000000008CA0000-0x0000000008D03000-memory.dmp
    Filesize

    396KB

  • memory/1308-10-0x0000000005AD0000-0x0000000005ADB000-memory.dmp
    Filesize

    44KB

  • memory/1308-9-0x0000000008D40000-0x0000000008D41000-memory.dmp
    Filesize

    4KB

  • memory/1308-8-0x00000000056A0000-0x00000000056A1000-memory.dmp
    Filesize

    4KB

  • memory/1308-2-0x0000000073C50000-0x000000007433E000-memory.dmp
    Filesize

    6.9MB

  • memory/1308-6-0x00000000056B0000-0x00000000056B1000-memory.dmp
    Filesize

    4KB

  • memory/1308-5-0x0000000005B10000-0x0000000005B11000-memory.dmp
    Filesize

    4KB

  • memory/1308-3-0x0000000000D80000-0x0000000000D81000-memory.dmp
    Filesize

    4KB

  • memory/1456-12-0x0000000000000000-mapping.dmp