Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    06-06-2024 15:02

General

  • Target

    584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe

  • Size

    7KB

  • MD5

    e0354350b177887076f4c89567e0af8d

  • SHA1

    999fc3514c83f5b3bfaf899b656a194f7f60ed05

  • SHA256

    584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032

  • SHA512

    5972d529569ad3aecd8a02de1b2150a3901e2fe09aa5223956d4fd9f77ec9acd308d938c5748b8e38b6090484d0ec6f288f2295f67a6fcc12b0dc770620600fd

  • SSDEEP

    96:nGJKj1y2oPbML8RcyuHazDvDId4IBmc+TMsa+aIVzNt:G4jU2o48RVHA4U0Zv

Malware Config

Extracted

Family

purecrypter

C2

https://www1.militarydefensenow.com/Stay/Vdopcuygit.vdf

Signatures

  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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 35 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe
    "C:\Users\Admin\AppData\Local\Temp\584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:248
    • C:\Users\Admin\AppData\Local\Temp\584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe
      "C:\Users\Admin\AppData\Local\Temp\584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1536

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe.log

    Filesize

    1KB

    MD5

    93744014fa06ad3ba4f2433690038bcd

    SHA1

    f1147da71dae163b0fe9e15e3e545efd2ec5321e

    SHA256

    fb7f07a6e881955e29df052aaf57b3b66732f71c8d7cf7ff9ce2d64d442bd519

    SHA512

    4f750617ff36f2806c50ebcfcfb19ee648fd11ebd5ed86ca44f594749492962beb74df22724c44665e56e11610cb0adfedb924e5bf43f6eec6001550a532fb15

  • C:\Users\Admin\AppData\Local\Temp\Ijohprrca.tmpdb

    Filesize

    152KB

    MD5

    73bd1e15afb04648c24593e8ba13e983

    SHA1

    4dd85ca46fcdf9d93f6b324f8bb0b5bb512a1b91

    SHA256

    aab0b201f392fef9fdff09e56a9d0ac33d0f68be95da270e6dab89bb1f971d8b

    SHA512

    6eb58fb41691894045569085bd64a83acd62277575ab002cf73d729bda4b6d43c36643a5fa336342e87a493326337ed43b8e5eaeae32f53210714699cb8dfac7

  • C:\Users\Admin\AppData\Local\Temp\Vsruh.tmpdb

    Filesize

    116KB

    MD5

    4e2922249bf476fb3067795f2fa5e794

    SHA1

    d2db6b2759d9e650ae031eb62247d457ccaa57d2

    SHA256

    c2c17166e7468877d1e80822f8a5f35a7700ac0b68f3b369a1f4154ae4f811e1

    SHA512

    8e5e12daf11f9f6e73fb30f563c8f2a64bbc7bb9deffe4969e23081ec1c4073cdf6c74e8dbcc65a271142083ad8312ec7d59505c90e718a5228d369f4240e1da

  • memory/248-0-0x000000007519E000-0x000000007519F000-memory.dmp

    Filesize

    4KB

  • memory/248-1-0x0000000000FD0000-0x0000000000FD8000-memory.dmp

    Filesize

    32KB

  • memory/248-2-0x0000000075190000-0x0000000075941000-memory.dmp

    Filesize

    7.7MB

  • memory/248-3-0x0000000007E30000-0x000000000811C000-memory.dmp

    Filesize

    2.9MB

  • memory/248-4-0x00000000086D0000-0x0000000008C76000-memory.dmp

    Filesize

    5.6MB

  • memory/248-5-0x0000000008320000-0x00000000083B2000-memory.dmp

    Filesize

    584KB

  • memory/248-6-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-11-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-9-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-7-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-13-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-19-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-31-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-33-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-43-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-55-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-59-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-57-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-53-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-51-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-49-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-47-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-46-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-41-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-39-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-37-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-35-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-29-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-27-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-25-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-23-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-21-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-17-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-15-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-66-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-61-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-69-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-67-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-63-0x0000000007E30000-0x0000000008116000-memory.dmp

    Filesize

    2.9MB

  • memory/248-4892-0x0000000075190000-0x0000000075941000-memory.dmp

    Filesize

    7.7MB

  • memory/248-4893-0x00000000066A0000-0x00000000067C8000-memory.dmp

    Filesize

    1.2MB

  • memory/248-4894-0x0000000005EB0000-0x0000000005EFC000-memory.dmp

    Filesize

    304KB

  • memory/248-4895-0x000000007519E000-0x000000007519F000-memory.dmp

    Filesize

    4KB

  • memory/248-4896-0x0000000075190000-0x0000000075941000-memory.dmp

    Filesize

    7.7MB

  • memory/248-4897-0x0000000075190000-0x0000000075941000-memory.dmp

    Filesize

    7.7MB

  • memory/248-4898-0x0000000005F10000-0x0000000005F64000-memory.dmp

    Filesize

    336KB

  • memory/248-5007-0x0000000075190000-0x0000000075941000-memory.dmp

    Filesize

    7.7MB

  • memory/1536-4903-0x0000000000400000-0x00000000004D8000-memory.dmp

    Filesize

    864KB

  • memory/1536-4905-0x0000000075190000-0x0000000075941000-memory.dmp

    Filesize

    7.7MB

  • memory/1536-4904-0x0000000005780000-0x0000000005896000-memory.dmp

    Filesize

    1.1MB

  • memory/1536-5008-0x0000000075190000-0x0000000075941000-memory.dmp

    Filesize

    7.7MB

  • memory/1536-7208-0x00000000059E0000-0x0000000005A7E000-memory.dmp

    Filesize

    632KB

  • memory/1536-7209-0x00000000060B0000-0x00000000060DC000-memory.dmp

    Filesize

    176KB

  • memory/1536-7210-0x0000000006170000-0x00000000061D6000-memory.dmp

    Filesize

    408KB

  • memory/1536-7211-0x0000000006910000-0x000000000698A000-memory.dmp

    Filesize

    488KB

  • memory/1536-7264-0x0000000075190000-0x0000000075941000-memory.dmp

    Filesize

    7.7MB