Analysis

  • max time kernel
    136s
  • max time network
    105s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-05-2024 23:16

General

  • Target

    737bf1c06ec2aa90cebbfa5c1e55225f19790864af0fc9034be1df4f251f9f1f.exe

  • Size

    1.8MB

  • MD5

    05367428bfe8267d4107bc1198a98547

  • SHA1

    303f2296e380f5978a75b1d5d11e990d5f047f6b

  • SHA256

    737bf1c06ec2aa90cebbfa5c1e55225f19790864af0fc9034be1df4f251f9f1f

  • SHA512

    efa392be5434d332ddb3ec9789cc1601d5880bc0c96e04da429bba8371b2b5c70e1b9349c3fa62bbf192767bf081ff3c6e469596441f2033a0c89986ffc2988a

  • SSDEEP

    49152:biAI3CyJ+mfZMfC6w7XDDtqhkyCAdqpHj1g7:3yUH6dXPUhkyYji

Malware Config

Signatures

  • Neshta

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 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).

  • NSIS installer 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\737bf1c06ec2aa90cebbfa5c1e55225f19790864af0fc9034be1df4f251f9f1f.exe
    "C:\Users\Admin\AppData\Local\Temp\737bf1c06ec2aa90cebbfa5c1e55225f19790864af0fc9034be1df4f251f9f1f.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Users\Admin\AppData\Local\Temp\3582-490\737bf1c06ec2aa90cebbfa5c1e55225f19790864af0fc9034be1df4f251f9f1f.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\737bf1c06ec2aa90cebbfa5c1e55225f19790864af0fc9034be1df4f251f9f1f.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:2436

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Privilege Escalation

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe
    Filesize

    2.4MB

    MD5

    d9e8a1fa55faebd36ed2342fedefbedd

    SHA1

    c25cc7f0035488de9c5df0121a09b5100e1c28e9

    SHA256

    bd7696911d75a9a35dfd125b24cb95003f1e9598592df47fa23a2568986a4a9a

    SHA512

    134644c68bd04536e9ea0a5da6e334d36b1ce8012a061fa6dabd31f85c16a1ac9eee8c40fee3d55f25c4d4edf0672de8ce204e344c800361cbcff092c09d7a33

  • C:\Users\Admin\AppData\Local\Temp\3582-490\737bf1c06ec2aa90cebbfa5c1e55225f19790864af0fc9034be1df4f251f9f1f.exe
    Filesize

    1.7MB

    MD5

    8f50877e925166dbbfe477cc199d28c4

    SHA1

    4c515f4d7795fe07666859f26435b993803ef6a2

    SHA256

    03ec0ee2b9da158d766379d5cc72d6364883b4f340278d0b7c009c87ed88c649

    SHA512

    de586323877773d502b599cce992825d0fe5bddd8b4990834f060235a9c3af95ef9eb62a4c866b5a4569281a3c6d464f6bedffd7744a62316ece363e391bf225

  • C:\Users\Admin\AppData\Local\Temp\nsq2F2F.tmp\InstallOptions.dll
    Filesize

    14KB

    MD5

    296a5f3179fa8d7a7a855eaf696ede44

    SHA1

    57aa5b71553ed282dd22c768e039a187f5c13f63

    SHA256

    ee0ad77e681c4d0fdf1d67df5f4ca03e6bdd8e3b05dfb47a83ad5c733ed62960

    SHA512

    bc527d1485f468e8d098057e0e38e8cb7aa6eb64d4ca30927b99b1552a3177b132b989015ff95bdf2ca046bf11a54b4b456f51e024fbc734fbb548c3499e53f6

  • C:\Users\Admin\AppData\Local\Temp\nsq2F2F.tmp\LangDLL.dll
    Filesize

    5KB

    MD5

    fbbf9da918557aba6fa6e166a95ee8dd

    SHA1

    abbd02abae00172971a2e9cef62dab3b562f90c7

    SHA256

    dc7daec6f47e63b5d001cd648d40d93c29be6f2c95fe8b212dbb4d94d31cb12d

    SHA512

    0f877a9e5c6eb06374f0f19f92a6ea55b09998c42c67b16db680918e3e0c2023d511893173f76dde60a47ffe916b0d9af09b6255a158fa3e0743dc54d2a35a65

  • C:\Users\Admin\AppData\Local\Temp\nsq2F2F.tmp\ioSpecial.ini
    Filesize

    760B

    MD5

    65e9155ed13d519146e77b7fd17dd432

    SHA1

    f85c021387637d18cabc0a28de8c13a9e1a8271b

    SHA256

    36c88e4de00f9a27d1c7366f1cb1fe14f02c63bf97b1d15f4c63631313a5659b

    SHA512

    ec2f7cb85726be6d3ac7977cd63259738fb0a0a8699b8d1dcd5602aa7959642424f28ad50c4ee9a331bf925c52c4aa37010a9f379fea5787abe68b123177aaad

  • memory/1984-180-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/1984-181-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/1984-183-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB