Analysis

  • max time kernel
    149s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 23:51

General

  • Target

    PO#3459.jpg.exe

  • Size

    703KB

  • MD5

    518090e39e06e5f3efcebcdf9404183d

  • SHA1

    c47e0de5fe58346e3575aab0bbb8af3a638f04c6

  • SHA256

    006e2d9f385a7c4d88299832906bf975a311e61ad24fb8b5b1130a9f308cb8c7

  • SHA512

    ea436927dfd75d312e96cd8afcd7e8e274d31f9c04d72d1742a323a1a65417b59a04fffd720ed4655730b34cfb48d78d4fa37f3f5e0f3652f003e720dc13cb5b

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.kaysarplastik.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    abdullah123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 2 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.

  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO#3459.jpg.exe
    "C:\Users\Admin\AppData\Local\Temp\PO#3459.jpg.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3736
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v lux /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\lux.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4692
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v lux /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\lux.exe"
        3⤵
        • Adds Run key to start application
        PID:4512
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\lux.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\lux.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3808
      • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
        "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:836

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    Filesize

    41KB

    MD5

    5d4073b2eb6d217c19f2b22f21bf8d57

    SHA1

    f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

    SHA256

    ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

    SHA512

    9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    Filesize

    41KB

    MD5

    5d4073b2eb6d217c19f2b22f21bf8d57

    SHA1

    f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

    SHA256

    ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

    SHA512

    9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\lux.exe
    Filesize

    703KB

    MD5

    518090e39e06e5f3efcebcdf9404183d

    SHA1

    c47e0de5fe58346e3575aab0bbb8af3a638f04c6

    SHA256

    006e2d9f385a7c4d88299832906bf975a311e61ad24fb8b5b1130a9f308cb8c7

    SHA512

    ea436927dfd75d312e96cd8afcd7e8e274d31f9c04d72d1742a323a1a65417b59a04fffd720ed4655730b34cfb48d78d4fa37f3f5e0f3652f003e720dc13cb5b

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\lux.exe
    Filesize

    703KB

    MD5

    518090e39e06e5f3efcebcdf9404183d

    SHA1

    c47e0de5fe58346e3575aab0bbb8af3a638f04c6

    SHA256

    006e2d9f385a7c4d88299832906bf975a311e61ad24fb8b5b1130a9f308cb8c7

    SHA512

    ea436927dfd75d312e96cd8afcd7e8e274d31f9c04d72d1742a323a1a65417b59a04fffd720ed4655730b34cfb48d78d4fa37f3f5e0f3652f003e720dc13cb5b

  • memory/836-143-0x0000000005520000-0x00000000055BC000-memory.dmp
    Filesize

    624KB

  • memory/836-140-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/836-139-0x0000000000000000-mapping.dmp
  • memory/3736-133-0x0000000006150000-0x0000000006194000-memory.dmp
    Filesize

    272KB

  • memory/3736-130-0x0000000000E10000-0x0000000000EC6000-memory.dmp
    Filesize

    728KB

  • memory/3736-132-0x0000000006060000-0x00000000060F2000-memory.dmp
    Filesize

    584KB

  • memory/3736-131-0x0000000006530000-0x0000000006AD4000-memory.dmp
    Filesize

    5.6MB

  • memory/3808-136-0x0000000000000000-mapping.dmp
  • memory/4512-135-0x0000000000000000-mapping.dmp
  • memory/4692-134-0x0000000000000000-mapping.dmp