Analysis

  • max time kernel
    119s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    22-10-2021 11:14

General

  • Target

    SWIFT COPY FOR URGENT RESPONSE.exe

  • Size

    539KB

  • MD5

    634657bd61352689f76e1ad691f569f8

  • SHA1

    0c3a0c59080e59b29bee05fa871e77c5e5e221f1

  • SHA256

    04c14c005ffff7fc3b47a608e6945310305d81958813b5e3552250e6823ff766

  • SHA512

    22bac142024a844560a10f96c3297acf52c57bbd3a4b9cf34e6b80c78675b6b478402527692cd6f7dd27759ceec9b250813d7da4adf94b715fb4723f7b5b987a

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.grodno.by
  • Port:
    587
  • Username:
    vrkyl@mail.grodno.by
  • Password:
    9qd8$2NonPD

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SWIFT COPY FOR URGENT RESPONSE.exe
    "C:\Users\Admin\AppData\Local\Temp\SWIFT COPY FOR URGENT RESPONSE.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4372
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BNurTdbuLCTOA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4F35.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4656
    • C:\Users\Admin\AppData\Local\Temp\SWIFT COPY FOR URGENT RESPONSE.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:3348

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\SWIFT COPY FOR URGENT RESPONSE.exe.log
    MD5

    568e6f2b186c39075772d775e4189f57

    SHA1

    02f642cfdd1491b1ce69e81925ed336975e2f972

    SHA256

    d29bbfbb510acd8716133feeade8f914076963ccc38abb4b5a64a8d32bac44e4

    SHA512

    ef3b7f6d6b355c41ca9abb40d769622ea3f79787d8d2501ad5a135fa5cc78712175190386c8e05ee863a3bc046bc09eee22310555d31e4d57a4652f280283156

  • C:\Users\Admin\AppData\Local\Temp\tmp4F35.tmp
    MD5

    1ce03da7fab7469ec4629b91bdb7932f

    SHA1

    7c0b7d8d1563bfff645b8546c93ed37c5a3f326c

    SHA256

    0b765c17ba6dc91661493695537614ae85f04dd81ca28e963b1d84c4369c0690

    SHA512

    9efb2d7a7baba48435c06011c67f36db2069a80bac86d8d0dd079a9df2cec25818db109ccd1d1559bacaa27c41f471e897c47fa452fb2d91181351bc566fe55d

  • memory/3348-119-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/3348-120-0x00000000004374AE-mapping.dmp
  • memory/3348-122-0x00000000017F0000-0x00000000017F1000-memory.dmp
    Filesize

    4KB

  • memory/3348-123-0x00000000017F1000-0x00000000017F2000-memory.dmp
    Filesize

    4KB

  • memory/3348-124-0x00000000017F2000-0x00000000017F3000-memory.dmp
    Filesize

    4KB

  • memory/4372-115-0x0000000002570000-0x0000000002571000-memory.dmp
    Filesize

    4KB

  • memory/4372-116-0x0000000002572000-0x0000000002574000-memory.dmp
    Filesize

    8KB

  • memory/4656-117-0x0000000000000000-mapping.dmp