Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    26-04-2024 12:46

General

  • Target

    Packing List PDF.exe

  • Size

    822KB

  • MD5

    5a12438b3b4c926c12a9376c7bf13426

  • SHA1

    c3185c6a5e5f07a5befbe4af7131d05634f5d1a3

  • SHA256

    1a794211deaa0ecb6abc6101d7c1bd61111b4dd2d895ee7ecf78fbf17f4c9ab3

  • SHA512

    16c1e0e18eb8b3345b8b05443b782cb1dd35492ac986811c39f3cdce8dfe85b003aba029ffca0e38aa33c951d0d08281825152b0e239471eac3de18ac67864d0

  • SSDEEP

    12288:tEqnHvjNIrpf9rN/mc/CaBmIwsyaPSIir97G6NLOZCGKEgbjuPBB5uO12rq:txPjKr5BNDWVxcSIiRG6atlB5N

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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).

  • 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Packing List PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\Packing List PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1228
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Packing List PDF.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2968
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CmxzrHBB.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2556
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CmxzrHBB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp42AB.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2648
    • C:\Users\Admin\AppData\Local\Temp\Packing List PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\Packing List PDF.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2788

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

4
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp42AB.tmp
    Filesize

    1KB

    MD5

    35758dbe2ec4d4f443afa00278d747f8

    SHA1

    8d6efc2c4b97de9b62e58609050d537a57eefced

    SHA256

    d5fdcf3eed762e4637a215e88b2f723d671e7554ebc51aaf453a3304d6d78a09

    SHA512

    69beb20ca06dbe0dc0d65e85a0f58514bb889607b32751e50c6e453bf320a37f4ff329ba8bd73e01547ebfa5e67ce4a7652d293c05c4a0c5e347fe539672ecf8

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\8GWXL9X4LPFI872490JQ.temp
    Filesize

    7KB

    MD5

    e8ffd2722073a158839b70f1ff44ecce

    SHA1

    0ccf23a28a10d04bd9c756aee0f96a1be03a026d

    SHA256

    1ac17af9884a70494700ad41d6c7621cb2aec7a572714dc49a0c09e2c051546a

    SHA512

    63e1c48aae1f4bfae84cd8bffc5019574c22a1890b8178597b54a133c3c1cc7464d1236ada95ae606bdb8c335785ab67d3a63bc89c4579fb9be1a4acc25195bf

  • memory/1228-31-0x0000000074600000-0x0000000074CEE000-memory.dmp
    Filesize

    6.9MB

  • memory/1228-1-0x0000000074600000-0x0000000074CEE000-memory.dmp
    Filesize

    6.9MB

  • memory/1228-2-0x0000000004380000-0x00000000043C0000-memory.dmp
    Filesize

    256KB

  • memory/1228-3-0x0000000000490000-0x00000000004B0000-memory.dmp
    Filesize

    128KB

  • memory/1228-4-0x0000000000500000-0x0000000000514000-memory.dmp
    Filesize

    80KB

  • memory/1228-5-0x0000000005A80000-0x0000000005B04000-memory.dmp
    Filesize

    528KB

  • memory/1228-0-0x0000000000E30000-0x0000000000F04000-memory.dmp
    Filesize

    848KB

  • memory/2788-30-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2788-27-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2788-28-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2788-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2788-22-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2788-24-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2788-20-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2788-19-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB