Analysis

  • max time kernel
    131s
  • max time network
    72s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    27-07-2021 12:05

General

  • Target

    SOA.exe

  • Size

    804KB

  • MD5

    60183d985a20da08edde84ad283fdb57

  • SHA1

    fa905171e489e10068ba2853fcf8c83865019283

  • SHA256

    0663ffc968c7a2870e7c3234b4c2c2c5bae705a12a1f84ff4527af8d8b9466e5

  • SHA512

    074645a61274efa80eb6451abd37628fef9d15ff889cdc6fb6da74baf2514160e8d0f049c4927fa3890baaa031f945dbdd03604535d4cb26374f38c6db406cff

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    Mail.jingtai.com.vn
  • Port:
    587
  • Username:
    markhung@jingtai.com.vn
  • Password:
    truongtuyen2209

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Drops file in Drivers directory 1 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
  • 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\SOA.exe
    "C:\Users\Admin\AppData\Local\Temp\SOA.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:808
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kzsOkRNINsZo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3440.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2036
    • C:\Users\Admin\AppData\Local\Temp\SOA.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1552

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\SOA.exe.log
    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • C:\Users\Admin\AppData\Local\Temp\tmp3440.tmp
    MD5

    e64e99fbe6237af5cac83f9c6b9d399e

    SHA1

    228d36c6cf23e5687f5bdf952ad2ecf4234e8983

    SHA256

    ed2d3fef99417cc8cb9929a5c18716da12702bfb0eabcfa0bc9c497c368c482a

    SHA512

    080c117783a0780a0f2701c1326bb8e142a7bf2d91a0ec6feb91f935ee01a9ac17a601dda63b04f50d2687301df101e2a3765ebdb75e0c6331b5744d70b6a894

  • memory/808-123-0x0000000006B60000-0x0000000006B9D000-memory.dmp
    Filesize

    244KB

  • memory/808-118-0x0000000004F60000-0x000000000545E000-memory.dmp
    Filesize

    5.0MB

  • memory/808-119-0x0000000004FF0000-0x0000000004FF1000-memory.dmp
    Filesize

    4KB

  • memory/808-120-0x0000000005450000-0x0000000005452000-memory.dmp
    Filesize

    8KB

  • memory/808-121-0x0000000008640000-0x0000000008641000-memory.dmp
    Filesize

    4KB

  • memory/808-122-0x0000000006C30000-0x0000000006CB3000-memory.dmp
    Filesize

    524KB

  • memory/808-114-0x00000000006E0000-0x00000000006E1000-memory.dmp
    Filesize

    4KB

  • memory/808-116-0x0000000005460000-0x0000000005461000-memory.dmp
    Filesize

    4KB

  • memory/808-117-0x0000000005000000-0x0000000005001000-memory.dmp
    Filesize

    4KB

  • memory/1552-127-0x000000000043768E-mapping.dmp
  • memory/1552-126-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1552-133-0x00000000051F0000-0x00000000056EE000-memory.dmp
    Filesize

    5.0MB

  • memory/1552-134-0x0000000005270000-0x0000000005271000-memory.dmp
    Filesize

    4KB

  • memory/1552-135-0x0000000005E50000-0x0000000005E51000-memory.dmp
    Filesize

    4KB

  • memory/2036-124-0x0000000000000000-mapping.dmp