Analysis

  • max time kernel
    172s
  • max time network
    188s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:42

General

  • Target

    Quotation Request.exe

  • Size

    1.0MB

  • MD5

    cbfff4b18ad63daf6990e48335a7aa1b

  • SHA1

    76b04133c97c8689d1f4d567103775cc91e67236

  • SHA256

    55dda2889a2fae3ddbe54c70a6ff687d366887a672502d00513543bb9aa482f3

  • SHA512

    72e9b65ebc3452adc6f8ad83b5951f8d27eacfbcc01061243f3f989545e0076afc650eefd1de876ae91248c6be7c9ebdad85ccaf8d2b1ec91d7c8d9d4b26377b

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.varda.com.tr
  • Port:
    587
  • Username:
    info@varda.com.tr
  • Password:
    varda9997929

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.varda.com.tr
  • Port:
    587
  • Username:
    info@varda.com.tr
  • Password:
    varda9997929

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
  • Adds Run key to start application 2 TTPs 1 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quotation Request.exe
    "C:\Users\Admin\AppData\Local\Temp\Quotation Request.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1288
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jFbVLVAWwUm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC890.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:212
    • C:\Users\Admin\AppData\Local\Temp\Quotation Request.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1284

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

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\Quotation Request.exe.log
    Filesize

    1KB

    MD5

    d143fbf26ef7c5350636d5f77ed0095d

    SHA1

    f549dfa0c61501a855604956c407efc81cc318f0

    SHA256

    07dffc7d22db12a99331028626a7c3ec98bfc490662733e5c3a9b15934776469

    SHA512

    a1d4b17339a3c54e23eb3d70ad67e4bd6ca12c91a22cfa3b70a5fa0ced22d45bcf4d52fc22ecc35d762c514f5e98330b23601aed16124426a8f2bfdab5e50719

  • C:\Users\Admin\AppData\Local\Temp\tmpC890.tmp
    Filesize

    1KB

    MD5

    3030ac1b48d4e642cf3617366bdfb3ae

    SHA1

    a2dc4432921ab5fe1f67d3d9d8f5446b033281f2

    SHA256

    24b52a8518bd9627ae9e85e2b4efc1d7a336160450cd2ec7d856cbeebbf779cf

    SHA512

    751d962ef9c820aeb16f292eed7c65654bff1e5333930ea1ea0351ebe86e9841e1512f9a2c401e8b9f46a83ae88673580ec86b0b15b6ea1aca5f65c1382467ba

  • memory/212-134-0x0000000000000000-mapping.dmp
  • memory/1284-136-0x0000000000000000-mapping.dmp
  • memory/1284-137-0x0000000000400000-0x0000000000474000-memory.dmp
    Filesize

    464KB

  • memory/1284-139-0x0000000005480000-0x00000000054E6000-memory.dmp
    Filesize

    408KB

  • memory/1284-140-0x0000000006400000-0x0000000006450000-memory.dmp
    Filesize

    320KB

  • memory/1288-130-0x0000000000890000-0x000000000099C000-memory.dmp
    Filesize

    1.0MB

  • memory/1288-131-0x00000000054D0000-0x000000000556C000-memory.dmp
    Filesize

    624KB

  • memory/1288-132-0x0000000005570000-0x0000000005602000-memory.dmp
    Filesize

    584KB

  • memory/1288-133-0x0000000006340000-0x00000000068E4000-memory.dmp
    Filesize

    5.6MB