Analysis

  • max time kernel
    143s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    09-06-2024 01:40

General

  • Target

    99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe

  • Size

    4.7MB

  • MD5

    9b1176e24facc6e241ad25eaa864e746

  • SHA1

    12746866303969d21b32ea5950ef7f429dc61513

  • SHA256

    99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b

  • SHA512

    df6b0ed0e7883bfbe531ec8dcf6baa8e9b1b85c30ceaa400286ffafa0076c6f3353830a13a94410c9d4b050f2efe1973d1600cade419a06d359a3dae36eb5aef

  • SSDEEP

    98304:mTChVFZg8XPK2LrLUMdmqIQ107Tz9zNVaJcoqaeQ8+An6:eCLFSOPtLnI17VNMeoqnnG

Malware Config

Extracted

Family

socks5systemz

C2

ccdigjh.net

http://ccdigjh.net/search/?q=67e28dd8690cfb204406a51a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978fe71ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a6086f616c3ee9d

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Detects executables packed with VMProtect. 16 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • Unexpected DNS network traffic destination 1 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\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe
    "C:\Users\Admin\AppData\Local\Temp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2188
    • C:\Users\Admin\AppData\Local\Temp\is-RQGNV.tmp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-RQGNV.tmp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp" /SL5="$40026,4667057,54272,C:\Users\Admin\AppData\Local\Temp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1692
      • C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
        "C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2488
      • C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
        "C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
    Filesize

    2.8MB

    MD5

    2a761f4fbde370399cfb8a3df34306dd

    SHA1

    e2fa78cb38aa55ca48f337d22afc862016772bcf

    SHA256

    09137001d363739719cd2fcb03f496861e4cf95fce651db08ebc2f153c36060c

    SHA512

    3564aa2c9c7864e9dca0e9c0c57485028714c8824bd5234395cfac0b17f6e88979417d5ddf0e491857c02bfab4d247ae915b0b70c6f0e7bdae655b05fa45d8d6

  • \Users\Admin\AppData\Local\Temp\is-RQGNV.tmp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp
    Filesize

    680KB

    MD5

    dff4f58a01a8e88e4a2f821ca761d901

    SHA1

    e67e24669220213f895b68c0d662b02b03469b4a

    SHA256

    91b049634c65dbe18368e1f2ead4ae48f62b92fdfcd119ccea0919b68bf56e76

    SHA512

    049cebaa8bc30f2b7b90a49f6022271247fab2a3bc0fd2e9f36d1f27e0c37926f00deedd92b5d85a8b34f2f6e9b59ee3b7e12510cfa720935a86ba820132817a

  • \Users\Admin\AppData\Local\Temp\is-S79G3.tmp\_isetup\_iscrypt.dll
    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-S79G3.tmp\_isetup\_shfoldr.dll
    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • memory/1692-16-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/1692-63-0x00000000033D0000-0x0000000003695000-memory.dmp
    Filesize

    2.8MB

  • memory/1692-78-0x00000000033D0000-0x0000000003695000-memory.dmp
    Filesize

    2.8MB

  • memory/1692-74-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2188-0-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2188-2-0x0000000000401000-0x000000000040B000-memory.dmp
    Filesize

    40KB

  • memory/2188-73-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2488-65-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2488-66-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2488-69-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-75-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-92-0x0000000002290000-0x0000000002332000-memory.dmp
    Filesize

    648KB

  • memory/2628-79-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-82-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-85-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-88-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-91-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-71-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-98-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-101-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-104-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-107-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-110-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-113-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-117-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB

  • memory/2628-120-0x0000000000400000-0x00000000006C5000-memory.dmp
    Filesize

    2.8MB