Analysis

  • max time kernel
    123s
  • max time network
    127s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    14-10-2021 05:27

General

  • Target

    Purchase Order_104387.exe

  • Size

    10.0MB

  • MD5

    74bd055b47476e3e151a937dcd4bd3dc

  • SHA1

    5704a5e3a967a004b30408ed86774cefe6e6de31

  • SHA256

    efaaf6c3c366861beab445a96d8d463d7e461506f86f153acd3e0ed0e635b2b7

  • SHA512

    981ce06d17ac108de7d7a997c2ca6697e9923968c3c20db81a2224093a5573bf0de48bd0d65db31f1481a22b73ca49ec2b6116acb19e7906f7780b60a5a6de44

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot2017480070:AAEhICR2Yy5NwasA-Cw1qaDJiUj6zxLU08M/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase Order_104387.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order_104387.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2388
    • C:\Users\Admin\AppData\Local\Temp\Purchase Order_104387.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase Order_104387.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:948

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/948-121-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/948-122-0x000000000043773E-mapping.dmp
  • memory/948-126-0x0000000005360000-0x0000000005361000-memory.dmp
    Filesize

    4KB

  • memory/948-127-0x00000000051E0000-0x00000000056DE000-memory.dmp
    Filesize

    5.0MB

  • memory/948-128-0x0000000005650000-0x0000000005651000-memory.dmp
    Filesize

    4KB

  • memory/948-129-0x0000000005F40000-0x0000000005F41000-memory.dmp
    Filesize

    4KB

  • memory/2388-115-0x0000000001290000-0x0000000001291000-memory.dmp
    Filesize

    4KB

  • memory/2388-117-0x00000000053C0000-0x00000000053C1000-memory.dmp
    Filesize

    4KB

  • memory/2388-118-0x0000000004D60000-0x0000000004D61000-memory.dmp
    Filesize

    4KB

  • memory/2388-119-0x0000000004E00000-0x0000000004E01000-memory.dmp
    Filesize

    4KB

  • memory/2388-120-0x0000000004EB0000-0x0000000004EB1000-memory.dmp
    Filesize

    4KB