Analysis

  • max time kernel
    119s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-04-2022 08:48

General

  • Target

    3ba1d05f51633f70ad7eb0e69c9825980fbdf161a6e2ace1344f4cefcc27244a.exe

  • Size

    821KB

  • MD5

    cbfb941abb5bbd544113c6540c72a08d

  • SHA1

    cab9f9416d5d8a12b897845ec40256dcc8b24939

  • SHA256

    3ba1d05f51633f70ad7eb0e69c9825980fbdf161a6e2ace1344f4cefcc27244a

  • SHA512

    60e509c3ef5dd002cb8a5d90272a351bc687326c1be72c067ba63ef409ce4b09db810b71987aefbcd53cdd3c0ff720248dc160efe20cd7a3132b19c321e2c5ce

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

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

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

  • Loads dropped DLL 1 IoCs
  • 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 42 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3ba1d05f51633f70ad7eb0e69c9825980fbdf161a6e2ace1344f4cefcc27244a.exe
    "C:\Users\Admin\AppData\Local\Temp\3ba1d05f51633f70ad7eb0e69c9825980fbdf161a6e2ace1344f4cefcc27244a.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2092
    • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
      "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:2172
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1100

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

    Filesize

    42KB

    MD5

    9827ff3cdf4b83f9c86354606736ca9c

    SHA1

    e73d73f42bb2a310f03eb1bcbb22be2b8eb7c723

    SHA256

    c1cf3dc8fa1c7fc00f88e07ad539979b3706ca8d69223cffd1d58bc8f521f63a

    SHA512

    8261828d55f3b5134c0aeb98311c04e20c5395d4347251746f3be0fb854f36cc7e118713cd00c9867537e6e47d5e71f2b2384fc00c67f0ae1b285b8310321579

  • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

    Filesize

    42KB

    MD5

    9827ff3cdf4b83f9c86354606736ca9c

    SHA1

    e73d73f42bb2a310f03eb1bcbb22be2b8eb7c723

    SHA256

    c1cf3dc8fa1c7fc00f88e07ad539979b3706ca8d69223cffd1d58bc8f521f63a

    SHA512

    8261828d55f3b5134c0aeb98311c04e20c5395d4347251746f3be0fb854f36cc7e118713cd00c9867537e6e47d5e71f2b2384fc00c67f0ae1b285b8310321579

  • C:\Users\Admin\AppData\Local\Temp\b35bc50e-fc56-4239-a7d0-bb79118b31c9\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • memory/1100-152-0x0000000070F40000-0x0000000070F8C000-memory.dmp

    Filesize

    304KB

  • memory/1100-153-0x00000000061E0000-0x00000000061FE000-memory.dmp

    Filesize

    120KB

  • memory/1100-160-0x0000000007160000-0x0000000007168000-memory.dmp

    Filesize

    32KB

  • memory/1100-159-0x0000000007220000-0x000000000723A000-memory.dmp

    Filesize

    104KB

  • memory/1100-158-0x0000000007110000-0x000000000711E000-memory.dmp

    Filesize

    56KB

  • memory/1100-157-0x0000000007180000-0x0000000007216000-memory.dmp

    Filesize

    600KB

  • memory/1100-156-0x0000000006F50000-0x0000000006F5A000-memory.dmp

    Filesize

    40KB

  • memory/1100-155-0x0000000006EE0000-0x0000000006EFA000-memory.dmp

    Filesize

    104KB

  • memory/1100-142-0x0000000000000000-mapping.dmp

  • memory/1100-143-0x0000000004570000-0x00000000045A6000-memory.dmp

    Filesize

    216KB

  • memory/1100-154-0x0000000007520000-0x0000000007B9A000-memory.dmp

    Filesize

    6.5MB

  • memory/1100-151-0x00000000061A0000-0x00000000061D2000-memory.dmp

    Filesize

    200KB

  • memory/1100-150-0x0000000005A40000-0x0000000005A5E000-memory.dmp

    Filesize

    120KB

  • memory/1100-147-0x0000000004D10000-0x0000000005338000-memory.dmp

    Filesize

    6.2MB

  • memory/1100-148-0x0000000004B80000-0x0000000004BA2000-memory.dmp

    Filesize

    136KB

  • memory/1100-149-0x00000000053B0000-0x0000000005416000-memory.dmp

    Filesize

    408KB

  • memory/2092-130-0x0000000000050000-0x0000000000124000-memory.dmp

    Filesize

    848KB

  • memory/2092-133-0x0000000004BE0000-0x0000000004C72000-memory.dmp

    Filesize

    584KB

  • memory/2092-131-0x0000000005190000-0x0000000005734000-memory.dmp

    Filesize

    5.6MB

  • memory/2092-132-0x0000000004AC0000-0x0000000004B04000-memory.dmp

    Filesize

    272KB

  • memory/2092-135-0x0000000073BC0000-0x0000000073C49000-memory.dmp

    Filesize

    548KB

  • memory/2172-146-0x00000000060B0000-0x000000000614C000-memory.dmp

    Filesize

    624KB

  • memory/2172-145-0x0000000005F80000-0x0000000005F8A000-memory.dmp

    Filesize

    40KB

  • memory/2172-144-0x0000000005FC0000-0x0000000006010000-memory.dmp

    Filesize

    320KB

  • memory/2172-141-0x00000000058D0000-0x0000000005936000-memory.dmp

    Filesize

    408KB

  • memory/2172-140-0x0000000000500000-0x0000000000586000-memory.dmp

    Filesize

    536KB

  • memory/2172-136-0x0000000000000000-mapping.dmp