Analysis

  • max time kernel
    141s
  • max time network
    140s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    20-01-2021 11:09

General

  • Target

    SecuriteInfo.com.BehavesLike.Win32.Generic.tc.18970.exe

  • Size

    1.4MB

  • MD5

    f14aa539774febdbb336e256eba3738c

  • SHA1

    87c54c41c7a0a29e1e4607d8f07b4c665a226b78

  • SHA256

    043bdeb2605902253d8f2f35e312910f86b287c6c4d65560b8c3741d65aec9ff

  • SHA512

    9b8968a64cfaf69282071de6d2ff152add5256a53a5ae0df31b7f9bed103c55cad0ab9afe29f1503b7e6a69edc639e325f03e693baf49cf2aa7bd64090b737c7

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.naijajob.net
  • Port:
    587
  • Username:
    info@naijajob.net
  • Password:
    r]n~Q6,I5hnQ

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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.tc.18970.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.tc.18970.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GHUJuPYAaCi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFD0.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:772
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.tc.18970.exe
      "{path}"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2124

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

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\SecuriteInfo.com.BehavesLike.Win32.Generic.tc.18970.exe.log
    MD5

    b4f7a6a57cb46d94b72410eb6a6d45a9

    SHA1

    69f3596ffa027202d391444b769ceea0ae14c5f7

    SHA256

    23994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b

    SHA512

    be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c

  • C:\Users\Admin\AppData\Local\Temp\tmpFD0.tmp
    MD5

    6506e82208305415c35962451bb376b3

    SHA1

    a332387cb6a27d83d86d6c011527277ffd0b5d8c

    SHA256

    9e50d8960379fb09ae0828fc71e873b2ec5913b52c7f92869be8d1c004d33667

    SHA512

    431a0bf6d8030a26cc77b82dcadf97fbd4311307e6bfb2c4abdd66ec06d103b04b79bb2520099035d5b7975c3aac6a9a66f985bc5b5203b5e9e256369b8e0fbd

  • memory/772-13-0x0000000000000000-mapping.dmp
  • memory/1048-8-0x00000000054B0000-0x00000000054B1000-memory.dmp
    Filesize

    4KB

  • memory/1048-3-0x00000000007C0000-0x00000000007C1000-memory.dmp
    Filesize

    4KB

  • memory/1048-2-0x0000000073A30000-0x000000007411E000-memory.dmp
    Filesize

    6.9MB

  • memory/1048-9-0x0000000005480000-0x0000000005481000-memory.dmp
    Filesize

    4KB

  • memory/1048-10-0x0000000005750000-0x000000000575E000-memory.dmp
    Filesize

    56KB

  • memory/1048-11-0x00000000063E0000-0x0000000006435000-memory.dmp
    Filesize

    340KB

  • memory/1048-12-0x0000000007EB0000-0x0000000007EB1000-memory.dmp
    Filesize

    4KB

  • memory/1048-6-0x0000000005AC0000-0x0000000005AC1000-memory.dmp
    Filesize

    4KB

  • memory/1048-5-0x0000000005280000-0x000000000530D000-memory.dmp
    Filesize

    564KB

  • memory/1048-7-0x0000000005760000-0x0000000005761000-memory.dmp
    Filesize

    4KB

  • memory/2124-15-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/2124-16-0x000000000043760E-mapping.dmp
  • memory/2124-18-0x0000000073A30000-0x000000007411E000-memory.dmp
    Filesize

    6.9MB

  • memory/2124-23-0x0000000005020000-0x0000000005021000-memory.dmp
    Filesize

    4KB

  • memory/2124-24-0x0000000005140000-0x0000000005141000-memory.dmp
    Filesize

    4KB

  • memory/2124-25-0x0000000005C90000-0x0000000005C91000-memory.dmp
    Filesize

    4KB

  • memory/2124-28-0x0000000005021000-0x0000000005022000-memory.dmp
    Filesize

    4KB