Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-01-2025 14:01

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 behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of SetWindowsHookEx 17 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:2076
    • 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 behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:3032

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

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

    Filesize

    5.4MB

    MD5

    02a88d03242515576fa54218538e34fa

    SHA1

    ed6f90fcbf9fabf0da167987e1c2647833df5d6e

    SHA256

    533afe3493caae3a36d03f7766aeeec4de9f682a76d73b8098f975daacf48c0b

    SHA512

    b9b0a03500e5ef66569dc42b07c5da6c186660989403bafd9f8511303add0622f8a9f670f73dffa3ddd8fe044b82c4e26a4ad6ae6e1aa0898c72b3ef671e09d5

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

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • memory/2076-120-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2076-118-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3032-22-0x00000000002F0000-0x0000000000300000-memory.dmp

    Filesize

    64KB

  • memory/3032-37-0x000000001AFA0000-0x000000001AFEC000-memory.dmp

    Filesize

    304KB

  • memory/3032-24-0x0000000000320000-0x0000000000328000-memory.dmp

    Filesize

    32KB

  • memory/3032-23-0x0000000000310000-0x000000000031C000-memory.dmp

    Filesize

    48KB

  • memory/3032-17-0x0000000000240000-0x0000000000248000-memory.dmp

    Filesize

    32KB

  • memory/3032-21-0x00000000002E0000-0x00000000002F0000-memory.dmp

    Filesize

    64KB

  • memory/3032-20-0x000000001AD40000-0x000000001ADF2000-memory.dmp

    Filesize

    712KB

  • memory/3032-19-0x000000001B6C0000-0x000000001B8A6000-memory.dmp

    Filesize

    1.9MB

  • memory/3032-18-0x00000000002D0000-0x00000000002E6000-memory.dmp

    Filesize

    88KB

  • memory/3032-26-0x0000000000590000-0x00000000005BE000-memory.dmp

    Filesize

    184KB

  • memory/3032-28-0x0000000000760000-0x0000000000794000-memory.dmp

    Filesize

    208KB

  • memory/3032-35-0x00000000026C0000-0x000000000270A000-memory.dmp

    Filesize

    296KB

  • memory/3032-40-0x0000000002730000-0x000000000273C000-memory.dmp

    Filesize

    48KB

  • memory/3032-39-0x0000000002720000-0x0000000002728000-memory.dmp

    Filesize

    32KB

  • memory/3032-38-0x0000000002710000-0x0000000002718000-memory.dmp

    Filesize

    32KB

  • memory/3032-25-0x0000000000330000-0x000000000034A000-memory.dmp

    Filesize

    104KB

  • memory/3032-36-0x000000001AF00000-0x000000001AF98000-memory.dmp

    Filesize

    608KB

  • memory/3032-34-0x0000000000AB0000-0x0000000000AB8000-memory.dmp

    Filesize

    32KB

  • memory/3032-33-0x0000000000A40000-0x0000000000AA8000-memory.dmp

    Filesize

    416KB

  • memory/3032-32-0x00000000005D0000-0x00000000005DC000-memory.dmp

    Filesize

    48KB

  • memory/3032-31-0x00000000005C0000-0x00000000005CC000-memory.dmp

    Filesize

    48KB

  • memory/3032-30-0x0000000000500000-0x0000000000508000-memory.dmp

    Filesize

    32KB

  • memory/3032-16-0x0000000000230000-0x0000000000238000-memory.dmp

    Filesize

    32KB

  • memory/3032-29-0x00000000004F0000-0x00000000004FA000-memory.dmp

    Filesize

    40KB

  • memory/3032-27-0x0000000000350000-0x0000000000368000-memory.dmp

    Filesize

    96KB

  • memory/3032-69-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

    Filesize

    9.9MB

  • memory/3032-114-0x000000001B940000-0x000000001B94A000-memory.dmp

    Filesize

    40KB

  • memory/3032-115-0x000000001B940000-0x000000001B94A000-memory.dmp

    Filesize

    40KB

  • memory/3032-116-0x000007FEF5573000-0x000007FEF5574000-memory.dmp

    Filesize

    4KB

  • memory/3032-117-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

    Filesize

    9.9MB

  • memory/3032-15-0x0000000000AC0000-0x0000000001026000-memory.dmp

    Filesize

    5.4MB

  • memory/3032-14-0x000007FEF5573000-0x000007FEF5574000-memory.dmp

    Filesize

    4KB