Analysis

  • max time kernel
    123s
  • max time network
    130s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    02-12-2021 17:18

General

  • Target

    PO4567328901.exe

  • Size

    601KB

  • MD5

    0346606c84796f9a92803e29daecad72

  • SHA1

    4fbae6bc6fe32fa19088ea77969f1c6de354d18c

  • SHA256

    9c0608f3b43dc5252841b632ed93c76252e712464be27e8932e10c86f19a8f07

  • SHA512

    c54989f63f8629d7b3669614dd70ed6e9b6085988160617752f61737374e6c73632b13ed19a64dfd829a4a46f6facf76fed2fc192c0e133a07bb2701c384ae90

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.modularelect.com
  • Port:
    587
  • Username:
    zspamming@modularelect.com
  • Password:
    successman12@

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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO4567328901.exe
    "C:\Users\Admin\AppData\Local\Temp\PO4567328901.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2532
    • C:\Users\Admin\AppData\Local\Temp\PO4567328901.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3016

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

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\PO4567328901.exe.log
    MD5

    90acfd72f14a512712b1a7380c0faf60

    SHA1

    40ba4accb8faa75887e84fb8e38d598dc8cf0f12

    SHA256

    20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

    SHA512

    29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

  • memory/2532-123-0x0000000004CB0000-0x0000000004CB1000-memory.dmp
    Filesize

    4KB

  • memory/2532-126-0x0000000004F10000-0x0000000004F15000-memory.dmp
    Filesize

    20KB

  • memory/2532-122-0x0000000004D50000-0x0000000004D51000-memory.dmp
    Filesize

    4KB

  • memory/2532-118-0x0000000000360000-0x0000000000361000-memory.dmp
    Filesize

    4KB

  • memory/2532-128-0x0000000007470000-0x00000000074A8000-memory.dmp
    Filesize

    224KB

  • memory/2532-125-0x0000000004CB0000-0x00000000051AE000-memory.dmp
    Filesize

    5.0MB

  • memory/2532-121-0x00000000051B0000-0x00000000051B1000-memory.dmp
    Filesize

    4KB

  • memory/2532-127-0x00000000073E0000-0x0000000007459000-memory.dmp
    Filesize

    484KB

  • memory/2532-124-0x0000000004F30000-0x0000000004F31000-memory.dmp
    Filesize

    4KB

  • memory/2532-120-0x0000000004C10000-0x0000000004C11000-memory.dmp
    Filesize

    4KB

  • memory/3016-130-0x00000000004375FE-mapping.dmp
  • memory/3016-129-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/3016-136-0x00000000056E0000-0x00000000056E1000-memory.dmp
    Filesize

    4KB

  • memory/3016-137-0x0000000005670000-0x0000000005671000-memory.dmp
    Filesize

    4KB

  • memory/3016-138-0x0000000006290000-0x0000000006291000-memory.dmp
    Filesize

    4KB

  • memory/3016-141-0x00000000056E1000-0x00000000056E2000-memory.dmp
    Filesize

    4KB