Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-03-2023 12:38

General

  • Target

    WaybillDoc_1009893562_pdf.exe

  • Size

    790KB

  • MD5

    5ea10085db645a0c943cae3e079c1365

  • SHA1

    39477e60fe3a1a0365e36e82988f61aa858b928e

  • SHA256

    743e9ab3afececaddd02c6402d7099f7e5c19f54799225f396c6808da207e78a

  • SHA512

    241a79d8e137de843c3f053723ac34bc19f6ac4c37060c97f8b9dabb9c75f764330472eae8536dc922179f111ea5070bddfcd98cb8a9047821fcb233b5fac976

  • SSDEEP

    24576:EcVZ9QGb2Zz4Ps43botB1bBqIwW3ZNC4Mj:33uOlopbQgpg

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.

  • 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
  • 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). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 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\WaybillDoc_1009893562_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\WaybillDoc_1009893562_pdf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4268
    • 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\WaybillDoc_1009893562_pdf.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:628
    • C:\Users\Admin\AppData\Local\Temp\WaybillDoc_1009893562_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\WaybillDoc_1009893562_pdf.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2676

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\WaybillDoc_1009893562_pdf.exe.log
    Filesize

    1KB

    MD5

    b7b9acb869ccc7f7ecb5304ec0384dee

    SHA1

    6a90751c95817903ee833d59a0abbef425a613b3

    SHA256

    8cb00a15cd942a1861c573d86d6fb430512c8e2f80f6349f48b16b8709ca7aa4

    SHA512

    7bec881ac5f59ac26f1be1e7e26d63f040c06369de10c1c246e531a4395d27c335d9acc647ecdedb48ed37bdc2dc405a4cfc11762e1c00659a49be259eaf8764

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0kowzy5j.ksh.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/628-150-0x0000000005F30000-0x0000000005F96000-memory.dmp
    Filesize

    408KB

  • memory/628-145-0x0000000002D90000-0x0000000002DA0000-memory.dmp
    Filesize

    64KB

  • memory/628-181-0x0000000007C40000-0x0000000007C48000-memory.dmp
    Filesize

    32KB

  • memory/628-180-0x0000000007C60000-0x0000000007C7A000-memory.dmp
    Filesize

    104KB

  • memory/628-179-0x0000000007B50000-0x0000000007B5E000-memory.dmp
    Filesize

    56KB

  • memory/628-178-0x0000000007BA0000-0x0000000007C36000-memory.dmp
    Filesize

    600KB

  • memory/628-177-0x0000000007990000-0x000000000799A000-memory.dmp
    Filesize

    40KB

  • memory/628-143-0x0000000002CF0000-0x0000000002D26000-memory.dmp
    Filesize

    216KB

  • memory/628-160-0x0000000006610000-0x000000000662E000-memory.dmp
    Filesize

    120KB

  • memory/628-172-0x0000000006BD0000-0x0000000006BEE000-memory.dmp
    Filesize

    120KB

  • memory/628-146-0x0000000002D90000-0x0000000002DA0000-memory.dmp
    Filesize

    64KB

  • memory/628-148-0x0000000005750000-0x0000000005D78000-memory.dmp
    Filesize

    6.2MB

  • memory/628-176-0x0000000007920000-0x000000000793A000-memory.dmp
    Filesize

    104KB

  • memory/628-149-0x00000000056D0000-0x00000000056F2000-memory.dmp
    Filesize

    136KB

  • memory/628-175-0x0000000007F60000-0x00000000085DA000-memory.dmp
    Filesize

    6.5MB

  • memory/628-174-0x000000007F9C0000-0x000000007F9D0000-memory.dmp
    Filesize

    64KB

  • memory/628-173-0x0000000002D90000-0x0000000002DA0000-memory.dmp
    Filesize

    64KB

  • memory/628-161-0x0000000006BF0000-0x0000000006C22000-memory.dmp
    Filesize

    200KB

  • memory/628-162-0x0000000070410000-0x000000007045C000-memory.dmp
    Filesize

    304KB

  • memory/2676-144-0x00000000053E0000-0x0000000005446000-memory.dmp
    Filesize

    408KB

  • memory/2676-185-0x0000000005360000-0x0000000005370000-memory.dmp
    Filesize

    64KB

  • memory/2676-147-0x0000000005360000-0x0000000005370000-memory.dmp
    Filesize

    64KB

  • memory/2676-140-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/2676-184-0x00000000070F0000-0x0000000007140000-memory.dmp
    Filesize

    320KB

  • memory/4268-136-0x0000000004C00000-0x0000000004C0A000-memory.dmp
    Filesize

    40KB

  • memory/4268-137-0x0000000004BC0000-0x0000000004BD0000-memory.dmp
    Filesize

    64KB

  • memory/4268-135-0x0000000004C20000-0x0000000004CB2000-memory.dmp
    Filesize

    584KB

  • memory/4268-139-0x0000000007240000-0x00000000072DC000-memory.dmp
    Filesize

    624KB

  • memory/4268-138-0x0000000004BC0000-0x0000000004BD0000-memory.dmp
    Filesize

    64KB

  • memory/4268-133-0x0000000000140000-0x000000000020C000-memory.dmp
    Filesize

    816KB

  • memory/4268-134-0x0000000005130000-0x00000000056D4000-memory.dmp
    Filesize

    5.6MB