Analysis

  • max time kernel
    293s
  • max time network
    281s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    30-05-2024 22:47

General

  • Target

    3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe

  • Size

    5.4MB

  • MD5

    3096abab9f77f9a27074ab83e4708c19

  • SHA1

    1d871bfcef5a09934edd76b68232a32e33b1b4af

  • SHA256

    3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539

  • SHA512

    78a38f3253c6066e3b77716d338e50bb2aad73bb800e915683b816b672710b6998c346d15e1e2041bfdd56c0c28407ad2583ed1bf62a17d796492a5dbfcc9953

  • SSDEEP

    98304:mlEuY2+murXnhkOrQ2stNwxpaqufUaGYMbSqm9bzsZdH5E7xngm4Y:09QnhQHwp3KUXbS/7tgm4Y

Malware Config

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 IoCs
  • Unexpected DNS network traffic destination 2 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Checks installed software on the system 1 TTPs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe
    "C:\Users\Admin\AppData\Local\Temp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1576
    • C:\Users\Admin\AppData\Local\Temp\is-5BA1U.tmp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-5BA1U.tmp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp" /SL5="$4010A,5417366,54272,C:\Users\Admin\AppData\Local\Temp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1388
      • C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe
        "C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2868
      • C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe
        "C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2500

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe

    Filesize

    2.8MB

    MD5

    8324cdab3e68429f86f378d81e6f3913

    SHA1

    e60cfc494a09b280fde9d23ee4ffee68aaacd695

    SHA256

    2d356ffacb01af22cc06e089702c9404dc3811eca6d7526d06940ae301e6c9e1

    SHA512

    4f143c2e463b3bf473d8b254ac757aec13b9f444cfea5537594ce0283880712ff3895110538b7faa8a761d71bcd0e3e8da48b89d03311a5e06809ad28357affb

  • \Users\Admin\AppData\Local\Temp\is-5BA1U.tmp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp

    Filesize

    680KB

    MD5

    791348257179b7a0bd2a513fc9b19618

    SHA1

    783834fa3c937de3d5cefc1e72cfd0cc63c657fc

    SHA256

    5cdf04dee7d14c9c6d768d5c3092979f3be25f5148ef39051dee584a662c921c

    SHA512

    8e68ed3e98f5066e5aa61e30fbe24ab500274e7994d74e8b167f5cd2b1512dde8a5c89cb5a8eedd4ae67b1414c08b312c999e79008d9e7c0255cb0c1a323ab63

  • \Users\Admin\AppData\Local\Temp\is-60JA4.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-60JA4.tmp\_isetup\_isdecmp.dll

    Filesize

    13KB

    MD5

    a813d18268affd4763dde940246dc7e5

    SHA1

    c7366e1fd925c17cc6068001bd38eaef5b42852f

    SHA256

    e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

    SHA512

    b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

  • \Users\Admin\AppData\Local\Temp\is-60JA4.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • memory/1388-14-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1388-66-0x0000000003AB0000-0x0000000003D74000-memory.dmp

    Filesize

    2.8MB

  • memory/1388-82-0x0000000003AB0000-0x0000000003D74000-memory.dmp

    Filesize

    2.8MB

  • memory/1388-78-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1576-77-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1576-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/1576-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2500-114-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-102-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-138-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-79-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-135-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-83-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-86-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-89-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-92-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-95-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-96-0x0000000002690000-0x0000000002732000-memory.dmp

    Filesize

    648KB

  • memory/2500-75-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-105-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-108-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-111-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-132-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-117-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-120-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-123-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-126-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2500-129-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2868-68-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2868-69-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB

  • memory/2868-73-0x0000000000400000-0x00000000006C4000-memory.dmp

    Filesize

    2.8MB