Analysis

  • max time kernel
    79s
  • max time network
    111s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    25-01-2021 06:23

General

  • Target

    REVISED PROFORMA INVOICE.exe

  • Size

    1.5MB

  • MD5

    ea2c4b1f17a5113a551ec7779d30bc2e

  • SHA1

    e89f81052d5f40fd759deb1f1fd3bc0a2a3c7c37

  • SHA256

    92d887eebd56236c7b64d7c4df54d34b63910982eddf27769b942d524c39a4a3

  • SHA512

    ebdcf6da3caa104a095f36d59579743ad6c771dd2cda9eba4e6d23c7d00026e8c065919535dd1bb24000d5cbe6d9fe9b5159ac867fbff29bd2c5d4fb795eb81e

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.goldenamoonresorts.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    golden@123

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.goldenamoonresorts.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    golden@123

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.

  • 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 WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\REVISED PROFORMA INVOICE.exe
    "C:\Users\Admin\AppData\Local\Temp\REVISED PROFORMA INVOICE.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:880
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lUXcvyz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8B0A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:940
    • C:\Users\Admin\AppData\Local\Temp\REVISED PROFORMA INVOICE.exe
      "C:\Users\Admin\AppData\Local\Temp\REVISED PROFORMA INVOICE.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3448

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\REVISED PROFORMA INVOICE.exe.log

    MD5

    568e6f2b186c39075772d775e4189f57

    SHA1

    02f642cfdd1491b1ce69e81925ed336975e2f972

    SHA256

    d29bbfbb510acd8716133feeade8f914076963ccc38abb4b5a64a8d32bac44e4

    SHA512

    ef3b7f6d6b355c41ca9abb40d769622ea3f79787d8d2501ad5a135fa5cc78712175190386c8e05ee863a3bc046bc09eee22310555d31e4d57a4652f280283156

  • C:\Users\Admin\AppData\Local\Temp\tmp8B0A.tmp

    MD5

    377dd102c53a09b6f08e393067601231

    SHA1

    d015dfa508c1be5642f880f0a4492013e3755c7f

    SHA256

    38a7e655cae7df50f1c372c7a004accb0c1d7a893f397eda3b9d59f6e8d1283e

    SHA512

    d46d8246396215c7cda7d3b74c3d62d477fff77e5ee742cdea24b779cad01f5f3c6dc8dc7d007dec10da1f269108433fb414c563fc39fe88bdc3258ff31a7ba3

  • memory/880-2-0x0000000000620000-0x0000000000621000-memory.dmp

    Filesize

    4KB

  • memory/880-3-0x0000000000621000-0x0000000000622000-memory.dmp

    Filesize

    4KB

  • memory/940-4-0x0000000000000000-mapping.dmp

  • memory/3448-6-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/3448-7-0x00000000004610FE-mapping.dmp

  • memory/3448-9-0x00000000027C0000-0x00000000027C1000-memory.dmp

    Filesize

    4KB

  • memory/3448-10-0x00000000027C1000-0x00000000027C2000-memory.dmp

    Filesize

    4KB

  • memory/3448-11-0x00000000027C2000-0x00000000027C3000-memory.dmp

    Filesize

    4KB