Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    17-05-2021 02:02

General

  • Target

    087697d241c62f0668f25caa7c739611b4ab1ff5ff7fba466757e67aa5e3a608.exe

  • Size

    380KB

  • MD5

    b7b3ff3f7e197049db7c20001f0ea2e4

  • SHA1

    0e57da7db883172c169461f25940feb75ef7866a

  • SHA256

    087697d241c62f0668f25caa7c739611b4ab1ff5ff7fba466757e67aa5e3a608

  • SHA512

    6c9b0dc5c8df64ef6158ccaff95bdce522a23026b0133b2f358c62672e5fbe77083844fa3af8d04a36f94afd901094de73c1a4798dd061055274d83ef46b0921

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.cargoair.bg
  • Port:
    587
  • Username:
    ikostadinov@cargoair.bg
  • Password:
    334455

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.cargoair.bg
  • Port:
    587
  • Username:
    ikostadinov@cargoair.bg
  • Password:
    334455

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • ReZer0 packer 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\087697d241c62f0668f25caa7c739611b4ab1ff5ff7fba466757e67aa5e3a608.exe
    "C:\Users\Admin\AppData\Local\Temp\087697d241c62f0668f25caa7c739611b4ab1ff5ff7fba466757e67aa5e3a608.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:512
    • C:\Users\Admin\AppData\Local\Temp\087697d241c62f0668f25caa7c739611b4ab1ff5ff7fba466757e67aa5e3a608.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1704

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\087697d241c62f0668f25caa7c739611b4ab1ff5ff7fba466757e67aa5e3a608.exe.log
    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • memory/512-118-0x0000000004F50000-0x0000000004F51000-memory.dmp
    Filesize

    4KB

  • memory/512-117-0x0000000004FD0000-0x0000000004FD1000-memory.dmp
    Filesize

    4KB

  • memory/512-114-0x00000000006A0000-0x00000000006A1000-memory.dmp
    Filesize

    4KB

  • memory/512-119-0x0000000004EE0000-0x0000000004EE1000-memory.dmp
    Filesize

    4KB

  • memory/512-120-0x0000000006930000-0x0000000006982000-memory.dmp
    Filesize

    328KB

  • memory/512-121-0x0000000006A30000-0x0000000006A31000-memory.dmp
    Filesize

    4KB

  • memory/512-116-0x0000000005430000-0x0000000005431000-memory.dmp
    Filesize

    4KB

  • memory/1704-122-0x0000000000400000-0x0000000000450000-memory.dmp
    Filesize

    320KB

  • memory/1704-123-0x000000000044A55E-mapping.dmp
  • memory/1704-129-0x00000000056E0000-0x00000000056E1000-memory.dmp
    Filesize

    4KB

  • memory/1704-130-0x0000000005740000-0x0000000005741000-memory.dmp
    Filesize

    4KB

  • memory/1704-131-0x0000000005CE0000-0x0000000005CE1000-memory.dmp
    Filesize

    4KB

  • memory/1704-134-0x00000000056E1000-0x00000000056E2000-memory.dmp
    Filesize

    4KB