Analysis

  • max time kernel
    137s
  • max time network
    164s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-10-2023 13:07

General

  • Target

    Purchase Order_13102023.exe

  • Size

    523KB

  • MD5

    b5a70147c823327681c942174403ee66

  • SHA1

    855905c7cdffd746a9ce9866bb50a92afd3e79b8

  • SHA256

    b9acce3baff6363cf5ccfa55dbad67650905b856985de50829e65fa8a4be3d9c

  • SHA512

    c8c49aa51326a513aa3d19fefea33987840c845f800d1ac575414b36b93bd9f8beb5f8110fefbf2c0e6b4527d0342b68fc47de883d68050b0d58c6c393bacabb

  • SSDEEP

    12288:HhsDwXRze8VYS94Goso7GerOpDfN4jQk8l7fdict:6gzexS9aOf0Y7Vict

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • 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).

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase Order_13102023.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order_13102023.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3476
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BNrDYUo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp356E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4068
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4428

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

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp356E.tmp
    Filesize

    1KB

    MD5

    5c597761298fd54b5bc93793c33f7d49

    SHA1

    85caec566019621eb9bc9f4d671e4fdfcdd7cc6d

    SHA256

    cadf0c9967f945679bf28e74b162cd44e66eddab4bf1e66bc28c4bce7d07e3e7

    SHA512

    0e4cfbd54a693379eecff6356ab5a43583f681ed781319d8766938f6148d53c7281aa0da951358840cbae1d1391bc39631d1c085d3911ab789d3bd35b5586203

  • memory/3476-10-0x0000000004E90000-0x0000000004EA0000-memory.dmp
    Filesize

    64KB

  • memory/3476-5-0x0000000074F60000-0x0000000075710000-memory.dmp
    Filesize

    7.7MB

  • memory/3476-11-0x0000000005BD0000-0x0000000005C4C000-memory.dmp
    Filesize

    496KB

  • memory/3476-1-0x00000000001D0000-0x0000000000258000-memory.dmp
    Filesize

    544KB

  • memory/3476-12-0x00000000059C0000-0x0000000005A02000-memory.dmp
    Filesize

    264KB

  • memory/3476-6-0x0000000004E90000-0x0000000004EA0000-memory.dmp
    Filesize

    64KB

  • memory/3476-7-0x0000000004DE0000-0x0000000004DEA000-memory.dmp
    Filesize

    40KB

  • memory/3476-8-0x0000000005190000-0x00000000051E6000-memory.dmp
    Filesize

    344KB

  • memory/3476-9-0x0000000004E20000-0x0000000004E2C000-memory.dmp
    Filesize

    48KB

  • memory/3476-0-0x0000000074F60000-0x0000000075710000-memory.dmp
    Filesize

    7.7MB

  • memory/3476-3-0x00000000052D0000-0x0000000005874000-memory.dmp
    Filesize

    5.6MB

  • memory/3476-2-0x0000000004BD0000-0x0000000004C6C000-memory.dmp
    Filesize

    624KB

  • memory/3476-4-0x0000000004D20000-0x0000000004DB2000-memory.dmp
    Filesize

    584KB

  • memory/3476-20-0x0000000074F60000-0x0000000075710000-memory.dmp
    Filesize

    7.7MB

  • memory/4428-18-0x0000000074F60000-0x0000000075710000-memory.dmp
    Filesize

    7.7MB

  • memory/4428-19-0x0000000005930000-0x0000000005940000-memory.dmp
    Filesize

    64KB

  • memory/4428-16-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/4428-21-0x0000000005880000-0x00000000058E6000-memory.dmp
    Filesize

    408KB

  • memory/4428-23-0x0000000074F60000-0x0000000075710000-memory.dmp
    Filesize

    7.7MB

  • memory/4428-24-0x0000000005930000-0x0000000005940000-memory.dmp
    Filesize

    64KB

  • memory/4428-25-0x0000000006620000-0x0000000006670000-memory.dmp
    Filesize

    320KB