Analysis

  • max time kernel
    26s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-01-2025 13:59

General

  • Target

    GrayWolf.exe

  • Size

    5.4MB

  • MD5

    fc880e4806da9ef322b4918ad89880bd

  • SHA1

    a359064fce75722488038c4316deb7354cef87b5

  • SHA256

    608e5234a2745f72909b5e002176149df66e39c36217fcc4826f13dba9e0153e

  • SHA512

    ea43f38145b4493a0a2ed5a7fa6997dd86573530a479e7593928629f74106430e2e45ee15e156f6f3c648d164d909db0591fb0407034037e79d3175b146471da

  • SSDEEP

    49152:DF/5OwXqsw+mw6j4w6SAZplWz3SUcSUWrXxRyJQfSqF6kr3Az0L:D/B0rQgCUcSUWOv98JL

Malware Config

Signatures

  • Detect Neshta payload 3 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Obfuscated with Agile.Net obfuscator 3 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 21 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\GrayWolf.exe
    "C:\Users\Admin\AppData\Local\Temp\GrayWolf.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2180
    • C:\Users\Admin\AppData\Local\Temp\3582-490\GrayWolf.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\GrayWolf.exe"
      2⤵
      • Executes dropped EXE
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2756

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

    Filesize

    547KB

    MD5

    cf6c595d3e5e9667667af096762fd9c4

    SHA1

    9bb44da8d7f6457099cb56e4f7d1026963dce7ce

    SHA256

    593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

    SHA512

    ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\GrayWolf.exe

    Filesize

    5.4MB

    MD5

    02a88d03242515576fa54218538e34fa

    SHA1

    ed6f90fcbf9fabf0da167987e1c2647833df5d6e

    SHA256

    533afe3493caae3a36d03f7766aeeec4de9f682a76d73b8098f975daacf48c0b

    SHA512

    b9b0a03500e5ef66569dc42b07c5da6c186660989403bafd9f8511303add0622f8a9f670f73dffa3ddd8fe044b82c4e26a4ad6ae6e1aa0898c72b3ef671e09d5

  • memory/2180-122-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2180-117-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2756-34-0x0000000000CD0000-0x0000000000CD8000-memory.dmp

    Filesize

    32KB

  • memory/2756-40-0x000000001ABE0000-0x000000001ABEC000-memory.dmp

    Filesize

    48KB

  • memory/2756-19-0x000000001B620000-0x000000001B806000-memory.dmp

    Filesize

    1.9MB

  • memory/2756-21-0x00000000003F0000-0x0000000000400000-memory.dmp

    Filesize

    64KB

  • memory/2756-20-0x000000001AFC0000-0x000000001B072000-memory.dmp

    Filesize

    712KB

  • memory/2756-23-0x0000000000410000-0x000000000041C000-memory.dmp

    Filesize

    48KB

  • memory/2756-26-0x0000000000A00000-0x0000000000A2E000-memory.dmp

    Filesize

    184KB

  • memory/2756-25-0x0000000000440000-0x000000000045A000-memory.dmp

    Filesize

    104KB

  • memory/2756-24-0x0000000000420000-0x0000000000428000-memory.dmp

    Filesize

    32KB

  • memory/2756-22-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/2756-27-0x0000000000AC0000-0x0000000000AD8000-memory.dmp

    Filesize

    96KB

  • memory/2756-33-0x000000001B190000-0x000000001B1F8000-memory.dmp

    Filesize

    416KB

  • memory/2756-32-0x0000000000CC0000-0x0000000000CCC000-memory.dmp

    Filesize

    48KB

  • memory/2756-17-0x00000000003D0000-0x00000000003D8000-memory.dmp

    Filesize

    32KB

  • memory/2756-31-0x0000000000BB0000-0x0000000000BBC000-memory.dmp

    Filesize

    48KB

  • memory/2756-30-0x0000000000BA0000-0x0000000000BA8000-memory.dmp

    Filesize

    32KB

  • memory/2756-29-0x0000000000A30000-0x0000000000A3A000-memory.dmp

    Filesize

    40KB

  • memory/2756-18-0x00000000003E0000-0x00000000003F6000-memory.dmp

    Filesize

    88KB

  • memory/2756-39-0x000000001ABD0000-0x000000001ABD8000-memory.dmp

    Filesize

    32KB

  • memory/2756-38-0x0000000000CE0000-0x0000000000CE8000-memory.dmp

    Filesize

    32KB

  • memory/2756-37-0x000000001B250000-0x000000001B29C000-memory.dmp

    Filesize

    304KB

  • memory/2756-36-0x000000001B810000-0x000000001B8A8000-memory.dmp

    Filesize

    608KB

  • memory/2756-35-0x000000001B200000-0x000000001B24A000-memory.dmp

    Filesize

    296KB

  • memory/2756-28-0x0000000000AE0000-0x0000000000B14000-memory.dmp

    Filesize

    208KB

  • memory/2756-41-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

    Filesize

    9.9MB

  • memory/2756-16-0x00000000003C0000-0x00000000003C8000-memory.dmp

    Filesize

    32KB

  • memory/2756-103-0x000000001B970000-0x000000001B97A000-memory.dmp

    Filesize

    40KB

  • memory/2756-102-0x000000001B970000-0x000000001B97A000-memory.dmp

    Filesize

    40KB

  • memory/2756-116-0x000007FEF57C3000-0x000007FEF57C4000-memory.dmp

    Filesize

    4KB

  • memory/2756-15-0x0000000000CF0000-0x0000000001256000-memory.dmp

    Filesize

    5.4MB

  • memory/2756-118-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

    Filesize

    9.9MB

  • memory/2756-120-0x000000001B970000-0x000000001B97A000-memory.dmp

    Filesize

    40KB

  • memory/2756-119-0x000000001B970000-0x000000001B97A000-memory.dmp

    Filesize

    40KB

  • memory/2756-12-0x000007FEF57C3000-0x000007FEF57C4000-memory.dmp

    Filesize

    4KB