Analysis

  • max time kernel
    84s
  • max time network
    58s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    07-07-2020 05:39

General

  • Target

    Payment Swift 8379393MT.exe

  • Size

    533KB

  • MD5

    890164dbea449802a6ed3599d21b55cf

  • SHA1

    62d535d77f4ddb13cf220c88001476cbc089efe8

  • SHA256

    70ec219c395c643882ed26e21757a273a3ca5072b54934c8cbe17cb6809b31eb

  • SHA512

    0d4d1210e0c72db90dc442f44b78ad9d9d36eb2a366160072a106059fe42dc8250cb741c8d30155728c43f80cd8f1f702e052d2c0aa4a2ef1b1d811134792b7d

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    a173509info

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment Swift 8379393MT.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Swift 8379393MT.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1456
    • C:\Users\Admin\AppData\Local\Temp\Payment Swift 8379393MT.exe
      "{path}"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      PID:744

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

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/744-2-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/744-3-0x0000000000447A0E-mapping.dmp
  • memory/744-4-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/744-5-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1456-1-0x0000000000000000-0x0000000000000000-disk.dmp