Analysis

  • max time kernel
    135s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/03/2023, 01:45

General

  • Target
    7fb411ee3e34e4b79b372b7d2321bf69b46de30c3286edccb7621562caefb60b.exe
  • Size 3.9MB
  • Sample230330-b6sl6scc2t
  • SHA256 7fb411ee3e34e4b79b372b7d2321bf69b46de30c3286edccb7621562caefb60b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Lumma Stealer

    An infostealer written in C++ first seen in August 2022.

  • 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 cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7fb411ee3e34e4b79b372b7d2321bf69b46de30c3286edccb7621562caefb60b.exe
    "C:\Users\Admin\AppData\Local\Temp\7fb411ee3e34e4b79b372b7d2321bf69b46de30c3286edccb7621562caefb60b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1764
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:756
    • C:\Users\Admin\AppData\Local\Temp\7fb411ee3e34e4b79b372b7d2321bf69b46de30c3286edccb7621562caefb60b.exe
      C:\Users\Admin\AppData\Local\Temp\7fb411ee3e34e4b79b372b7d2321bf69b46de30c3286edccb7621562caefb60b.exe
      2⤵
        PID:3732

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          __PSScriptPolicyTest_145fyzsx.5sb.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_145fyzsx.5sb.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          memory/756-139-0x0000000002670000-0x00000000026A6000-memory.dmp

          memory/756-161-0x0000000002760000-0x0000000002770000-memory.dmp

          memory/756-155-0x0000000002760000-0x0000000002770000-memory.dmp

          memory/756-154-0x0000000005C60000-0x0000000005C7E000-memory.dmp

          memory/756-156-0x00000000074E0000-0x0000000007B5A000-memory.dmp

          memory/756-159-0x0000000002760000-0x0000000002770000-memory.dmp

          memory/756-140-0x0000000004DF0000-0x0000000005418000-memory.dmp

          memory/756-141-0x0000000002760000-0x0000000002770000-memory.dmp

          memory/756-142-0x0000000002760000-0x0000000002770000-memory.dmp

          memory/756-143-0x0000000005490000-0x00000000054F6000-memory.dmp

          memory/756-144-0x0000000005630000-0x0000000005696000-memory.dmp

          memory/756-157-0x0000000006160000-0x000000000617A000-memory.dmp

          memory/756-160-0x0000000002760000-0x0000000002770000-memory.dmp

          memory/1764-136-0x0000000005200000-0x000000000520A000-memory.dmp

          memory/1764-135-0x0000000005250000-0x00000000052E2000-memory.dmp

          memory/1764-134-0x0000000005800000-0x0000000005DA4000-memory.dmp

          memory/1764-158-0x00000000051B0000-0x00000000051C0000-memory.dmp

          memory/1764-133-0x0000000000570000-0x0000000000954000-memory.dmp

          memory/1764-138-0x0000000007010000-0x0000000007032000-memory.dmp

          memory/1764-137-0x00000000051B0000-0x00000000051C0000-memory.dmp

          memory/3732-165-0x0000000000400000-0x00000000004B8000-memory.dmp

          memory/3732-170-0x0000000000400000-0x00000000004B8000-memory.dmp

          memory/3732-168-0x0000000000400000-0x00000000004B8000-memory.dmp

          memory/3732-166-0x0000000000400000-0x00000000004B8000-memory.dmp

          memory/3732-169-0x0000000000400000-0x00000000004B8000-memory.dmp

          memory/3732-171-0x0000000000400000-0x00000000004B8000-memory.dmp