Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19-12-2024 06:34

General

  • Target

    bc77f59111c15312f1eff25a3980a2c34ae481027d1bf61306fb90a930a07b33N.exe

  • Size

    889KB

  • MD5

    474266bc033b8e2a5c5ba5e3401654e0

  • SHA1

    209449bf991617f0cbfff1dc13aed5526aeb019e

  • SHA256

    bc77f59111c15312f1eff25a3980a2c34ae481027d1bf61306fb90a930a07b33

  • SHA512

    016c395aa3fcc138ac686dea72065337d6a546a8224617fb33cade4eb82245a2950dcfd3e02860ece2a0300fc83d0d3a20590b8de38bbe10bbdd15cbd7759927

  • SSDEEP

    24576:WgcTNFhhpPhcLKrlJLxdloxADMSjZqXZL3FTmv1T:QTzzpPhaCLOqtjZObk

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 4 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • 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 2 IoCs

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

  • NSIS installer 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc77f59111c15312f1eff25a3980a2c34ae481027d1bf61306fb90a930a07b33N.exe
    "C:\Users\Admin\AppData\Local\Temp\bc77f59111c15312f1eff25a3980a2c34ae481027d1bf61306fb90a930a07b33N.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:2364
    • C:\Users\Admin\AppData\Local\Temp\3582-490\bc77f59111c15312f1eff25a3980a2c34ae481027d1bf61306fb90a930a07b33N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\bc77f59111c15312f1eff25a3980a2c34ae481027d1bf61306fb90a930a07b33N.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      PID:2700

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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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\nst1019.tmp\options.ini

    Filesize

    1KB

    MD5

    304bfc6c43e6872ac972e09f1710237e

    SHA1

    875e01cbf84864e6c436046929b3ef5c7de0780a

    SHA256

    1052654fc1421ca10043e4088b3c2eaa5443fc363803c6f4817792d7b88958ee

    SHA512

    8f02b0d66bfd5ef36bef01a7c7d4613ef401528ffacd5e98c95b9b2dc60738319ba4bb231301b177888116a091f506df29f62d846846a558b860e9dcd739c5b0

  • C:\Users\Admin\AppData\Local\Temp\nst1019.tmp\options.ini

    Filesize

    1KB

    MD5

    8da094ccfd7382de6468792ec1032bd4

    SHA1

    c9a899791a1f9411da0c4965d5a651395ab8e6a5

    SHA256

    20353746e3b85bda4552da441694c065f377b3d9ac3bb9560c81bb3617e3fd3f

    SHA512

    ae7443d92fc082dde0fcbc264294feb18e4361ac131588615fa6be6b6731abf762d3ed685631939477aa749b1190d2798a73086070a498b747deabe172d19165

  • \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\bc77f59111c15312f1eff25a3980a2c34ae481027d1bf61306fb90a930a07b33N.exe

    Filesize

    849KB

    MD5

    e88af3cff30419550548facfc136875a

    SHA1

    7c9283984d27668f4c42cedcab8d77004abcc5c2

    SHA256

    a0cc8032f85cbcee1618cc41f0d5cb6cc9e45774d2fda9701cc6b6c87f758987

    SHA512

    e9d4176af49c17fb0df520a0cf2371e23b84b9c28a0bfcd487f15fee3abf75d4db1f8614cc7d66d25700ae52a04dbe18cd54c5cc7caa0c041cee102c8d96b479

  • \Users\Admin\AppData\Local\Temp\nst1019.tmp\InstallOptions.dll

    Filesize

    14KB

    MD5

    d753362649aecd60ff434adf171a4e7f

    SHA1

    3b752ad064e06e21822c8958ae22e9a6bb8cf3d0

    SHA256

    8f24c6cf0b06d18f3c07e7bfca4e92afce71834663746cfaa9ddf52a25d5c586

    SHA512

    41bf41add275867553fa3bd8835cd7e2a2a362a2d5670ccbfad23700448bad9fe0f577fb6ee9d4eb81dfc10d463b325b8a873fe5912eb580936d4ad96587aa6d

  • \Users\Admin\AppData\Local\Temp\nst1019.tmp\System.dll

    Filesize

    10KB

    MD5

    56a321bd011112ec5d8a32b2f6fd3231

    SHA1

    df20e3a35a1636de64df5290ae5e4e7572447f78

    SHA256

    bb6df93369b498eaa638b0bcdc4bb89f45e9b02ca12d28bcedf4629ea7f5e0f1

    SHA512

    5354890cbc53ce51081a78c64ba9c4c8c4dc9e01141798c1e916e19c5776dac7c82989fad0f08c73e81aaba332dad81205f90d0663119af45550b97b338b9cc3

  • memory/2364-194-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2364-196-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB