Analysis

  • max time kernel
    96s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 11:18

General

  • Target

    SWIFT.exe

  • Size

    724KB

  • MD5

    c3c773188f2a491bb677d1018789cb94

  • SHA1

    d6d5c21a7b4c7cf098bc74e9a0e77710aa403c3c

  • SHA256

    0b958e6c3826a5b6cbec4f827dba24652088d1c8a531ff85736e546fe61cee37

  • SHA512

    853ddb7b084757099dc2f370349277ad830bf17665d3933875d10917e5cdcae32876b4f96caa3c93972462766ee46c5df033568eaaceb0e534dd02bfef507cd3

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com.tr
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    ok2019

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com.tr
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    ok2019

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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.exe
    "C:\Users\Admin\AppData\Local\Temp\SWIFT.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1688
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2309.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3616
    • C:\Users\Admin\AppData\Local\Temp\SWIFT.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2096

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    611B

    MD5

    bceb1b24038a079a8046db250ce33039

    SHA1

    95d2a21b00e5c127f023d2950afe052d2acba572

    SHA256

    d5237a1aac346aaff3cedaca0a567afa529b84a21676e4c7017c9f87cfb32d57

    SHA512

    182dc30cd1e600da9b7ea1ca12860fd82237b04de293899d19ab7edb8b2bcdb37e30d387bbdbb54acdbecdb8200f5a39d417abd91d2b4c11fd126a9e4d0f050e

  • C:\Users\Admin\AppData\Local\Temp\tmp2309.tmp

    Filesize

    1KB

    MD5

    ab9f8a9574d9209cd8666decb37e33cc

    SHA1

    b768b98d37b96bcf5eeeb4bae10589a196b66db2

    SHA256

    2c052172f943620c36053efd2ab1d6ef9fbb671c55669b9f49430f0f7acd7704

    SHA512

    5059538580cce17a2c7516e3117297310455e38ff32d51c6e17ef188448ce3567f9c968ad478df725ed2ce8630ceee2340246264a6e60877895591a67d45da70

  • memory/1688-130-0x0000000000F80000-0x000000000103C000-memory.dmp

    Filesize

    752KB

  • memory/1688-131-0x0000000008230000-0x00000000082CC000-memory.dmp

    Filesize

    624KB

  • memory/1688-132-0x0000000008370000-0x0000000008402000-memory.dmp

    Filesize

    584KB

  • memory/2096-135-0x0000000000000000-mapping.dmp

  • memory/2096-136-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2096-138-0x0000000005860000-0x0000000005E04000-memory.dmp

    Filesize

    5.6MB

  • memory/2096-139-0x00000000060C0000-0x0000000006126000-memory.dmp

    Filesize

    408KB

  • memory/2096-140-0x0000000006800000-0x0000000006850000-memory.dmp

    Filesize

    320KB

  • memory/2096-141-0x0000000006B70000-0x0000000006B7A000-memory.dmp

    Filesize

    40KB

  • memory/3616-133-0x0000000000000000-mapping.dmp