Analysis

  • max time kernel
    122s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    19-10-2021 04:31

General

  • Target

    Copy BL and Debit Note.exe

  • Size

    526KB

  • MD5

    bf3529f043b5bbd871d4fe1fa7dbd9b7

  • SHA1

    0770c707d13b4b186bf926413b806bd88fe2bdfc

  • SHA256

    33e67621d21b3a8a3afd7bd73c2ee1dadd4d9d18faa31b68f67bdd54f7804cd0

  • SHA512

    39fedee0ce4b83dd382a0369953607cc5f06a498b06d4340e051ca13bdc66cd5e1f16439feb0af09e2ec665e80552d5856cb6bdba2dd5f26f39ffcc6205ddcf2

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.davaobay.com.ph
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    p@ssw0rd

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 IoCs
  • Drops file in Drivers directory 1 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Copy BL and Debit Note.exe
    "C:\Users\Admin\AppData\Local\Temp\Copy BL and Debit Note.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1112
    • C:\Users\Admin\AppData\Local\Temp\Copy BL and Debit Note.exe
      "C:\Users\Admin\AppData\Local\Temp\Copy BL and Debit Note.exe"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1820

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

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/1112-53-0x0000000001050000-0x0000000001051000-memory.dmp
    Filesize

    4KB

  • memory/1112-55-0x0000000000BA0000-0x0000000000BA1000-memory.dmp
    Filesize

    4KB

  • memory/1112-56-0x0000000000600000-0x0000000000608000-memory.dmp
    Filesize

    32KB

  • memory/1112-57-0x0000000007000000-0x0000000007058000-memory.dmp
    Filesize

    352KB

  • memory/1820-58-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1820-59-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1820-60-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1820-62-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1820-61-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1820-63-0x00000000004376CE-mapping.dmp
  • memory/1820-64-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1820-66-0x00000000006A0000-0x00000000006A1000-memory.dmp
    Filesize

    4KB

  • memory/1820-67-0x00000000006A1000-0x00000000006A2000-memory.dmp
    Filesize

    4KB