Analysis

  • max time kernel
    147s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-04-2024 10:36

General

  • Target

    49136 E2K 610622871149136 E2K 6106228711.exe

  • Size

    804KB

  • MD5

    e8b61b099af93918a7d59477334471e0

  • SHA1

    a2ce7a730e96bf6c8f9cd512993fd67cf0c10767

  • SHA256

    e7456c57dba442a7e63f2bd45ff5be6c8168f2fcfd15c5e405536fb3bb212dcb

  • SHA512

    30b93418d244b71718a7fbf6683c27ac4bc799338f67d915367cb7cb5b93dab661b5b9071f49e055e9701d721ef3e788a0632adc062ecd32d1ffe225712bd855

  • SSDEEP

    12288:IYgBDMwdNEb40oLhLr1+vuYdCllN9cnUstwbvhz58lZNKXGLfR:IYgB7mINL/vbDci1p2d

Malware Config

Signatures

  • AgentTesla

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

  • Executes dropped EXE 3 IoCs
  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 2 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).

  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\49136 E2K 610622871149136 E2K 6106228711.exe
    "C:\Users\Admin\AppData\Local\Temp\49136 E2K 610622871149136 E2K 6106228711.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3124
    • C:\Users\Admin\AppData\Local\Temp\kigtiqm.exe
      "C:\Users\Admin\AppData\Local\Temp\kigtiqm.exe" "C:\Users\Admin\AppData\Local\Temp\xmnxoix.au3"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2552
      • C:\Users\Admin\AppData\Local\Temp\kigtiqm.exe
        "C:\Users\Admin\AppData\Local\Temp\kigtiqm.exe"
        3⤵
        • Executes dropped EXE
        PID:3484
      • C:\Users\Admin\AppData\Local\Temp\kigtiqm.exe
        "C:\Users\Admin\AppData\Local\Temp\kigtiqm.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:2968

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

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

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\bzeakrjaft.hv
    Filesize

    68KB

    MD5

    3fcceb6589669e4f6c1f159a9b6fa0d9

    SHA1

    37b0be703e1bb6c1b0eb06fd25a91724f5ce5264

    SHA256

    935134c9d742e8364884a2647aef3490ddd89aa5c1f99183a57bbc5829fe02c0

    SHA512

    05537dc4d259dc0e0cd9f83b8d816aef4154aedc6c96642c8b7979ee41760d8cb35ccd6eed2f9c5416fa132a53ab9f62bab57cff9800f203906509c86c8c509c

  • C:\Users\Admin\AppData\Local\Temp\chdtr.tlz
    Filesize

    263KB

    MD5

    68e51dc63d26a2e2f8e8bd9a4a0be275

    SHA1

    2616ce912fc994ecabe75b853511b9aa4202fc97

    SHA256

    9f27f632aac3e100bbbb7969deaf2c731c01755c1085e92e80ddd9c360487d76

    SHA512

    574d8864bf4f048be5207f0a71e26e1a8ae5e182f73d5b956c41d5fd703899446824e85f287c8c4f3c50aed21da53596a57435e10f4a9cfd37688e97683fa62d

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

    872KB

    MD5

    c56b5f0201a3b3de53e561fe76912bfd

    SHA1

    2a4062e10a5de813f5688221dbeb3f3ff33eb417

    SHA256

    237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

    SHA512

    195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

  • C:\Users\Admin\AppData\Local\Temp\xmnxoix.au3
    Filesize

    4KB

    MD5

    0d013f6baac0a09a1fb8e14217317503

    SHA1

    453fba3488930e98d075946a31e5455b84eed5ba

    SHA256

    0a78523b6163a8372ba64e5cc275d68f6582b7ca3a93e3163ad96251cc788d83

    SHA512

    05032c4bbdc56992768a87ebaa9a9f43cb9092df401bb61a20673c1bec3a1f3fe4ee7c55c0572ceac9d862538ac765d0e0577cb63424c5edf137f7948feb8ced

  • memory/2552-8-0x0000000000F30000-0x0000000000F32000-memory.dmp
    Filesize

    8KB

  • memory/2968-23-0x0000000005A70000-0x0000000005A80000-memory.dmp
    Filesize

    64KB

  • memory/2968-24-0x0000000006030000-0x00000000065D4000-memory.dmp
    Filesize

    5.6MB

  • memory/2968-15-0x0000000000400000-0x0000000000441000-memory.dmp
    Filesize

    260KB

  • memory/2968-17-0x0000000000400000-0x0000000000441000-memory.dmp
    Filesize

    260KB

  • memory/2968-19-0x0000000002C00000-0x0000000002C30000-memory.dmp
    Filesize

    192KB

  • memory/2968-13-0x0000000000400000-0x0000000000441000-memory.dmp
    Filesize

    260KB

  • memory/2968-22-0x0000000005A70000-0x0000000005A80000-memory.dmp
    Filesize

    64KB

  • memory/2968-21-0x0000000005A70000-0x0000000005A80000-memory.dmp
    Filesize

    64KB

  • memory/2968-20-0x0000000073520000-0x0000000073CD0000-memory.dmp
    Filesize

    7.7MB

  • memory/2968-16-0x0000000000400000-0x0000000000441000-memory.dmp
    Filesize

    260KB

  • memory/2968-25-0x00000000059A0000-0x0000000005A06000-memory.dmp
    Filesize

    408KB

  • memory/2968-26-0x0000000007C80000-0x0000000007D12000-memory.dmp
    Filesize

    584KB

  • memory/2968-27-0x0000000007C20000-0x0000000007C2A000-memory.dmp
    Filesize

    40KB

  • memory/2968-28-0x0000000007D80000-0x0000000007DD0000-memory.dmp
    Filesize

    320KB

  • memory/2968-29-0x00000000080C0000-0x0000000008282000-memory.dmp
    Filesize

    1.8MB

  • memory/2968-30-0x0000000073520000-0x0000000073CD0000-memory.dmp
    Filesize

    7.7MB

  • memory/2968-31-0x0000000005A70000-0x0000000005A80000-memory.dmp
    Filesize

    64KB

  • memory/2968-32-0x0000000005A70000-0x0000000005A80000-memory.dmp
    Filesize

    64KB