Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    26-03-2024 19:33

General

  • Target

    43b3f4a272bce5f11eea72d371e3f541d8a984eb33e9a9af156e0ad5af4f53e2.exe

  • Size

    733KB

  • MD5

    f913d80a72f4a9a301105ff057784da3

  • SHA1

    b0e7f8190834d87545fc72b7eb15468cb946e67c

  • SHA256

    43b3f4a272bce5f11eea72d371e3f541d8a984eb33e9a9af156e0ad5af4f53e2

  • SHA512

    5fc105986c306b5ec6d4c622b312d8c6d7fcced826a13a09f25cdf259cccd4e3d04b25203335e0d5c8a78dae49e7eb346fb0c48c7aca34e842c0f4e639db5926

  • SSDEEP

    12288:WB3g+VaUBLHZ/sME8z76w/t3Z/gMj8zh6w/q:MwpUB7ZE66gBZ4h6gq

Malware Config

Signatures

  • Detect Neshta payload 2 IoCs
  • Neshta

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

  • RevengeRAT

    Remote-access trojan with a wide range of capabilities.

  • RevengeRat Executable 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 7 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).

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\43b3f4a272bce5f11eea72d371e3f541d8a984eb33e9a9af156e0ad5af4f53e2.exe
    "C:\Users\Admin\AppData\Local\Temp\43b3f4a272bce5f11eea72d371e3f541d8a984eb33e9a9af156e0ad5af4f53e2.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2404
    • C:\Users\Admin\AppData\Local\Temp\3582-490\43b3f4a272bce5f11eea72d371e3f541d8a984eb33e9a9af156e0ad5af4f53e2.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\43b3f4a272bce5f11eea72d371e3f541d8a984eb33e9a9af156e0ad5af4f53e2.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:320
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 612
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2172

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

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

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\43b3f4a272bce5f11eea72d371e3f541d8a984eb33e9a9af156e0ad5af4f53e2.exe
    Filesize

    692KB

    MD5

    9c61bf3b1af5f74781d9aa0a8634258d

    SHA1

    a03dee35405d2330f6cda776afc71cb8f17fc7b9

    SHA256

    b973522b1faa4d63ab62362b73df680ae30ed5f33f157f8a6c284537f54ccc12

    SHA512

    8103315bd3bd7bebbbf2d78714f5298604b241e6f66c41e8566181a7dd88b60c344a1b01f3f545ad6642451938e40d8130a1ce0f4667226c453a545ccf393e90

  • memory/320-12-0x0000000001180000-0x0000000001228000-memory.dmp
    Filesize

    672KB

  • memory/320-13-0x0000000073E00000-0x00000000744EE000-memory.dmp
    Filesize

    6.9MB

  • memory/320-14-0x0000000001140000-0x0000000001180000-memory.dmp
    Filesize

    256KB

  • memory/320-94-0x0000000073E00000-0x00000000744EE000-memory.dmp
    Filesize

    6.9MB

  • memory/320-95-0x0000000001140000-0x0000000001180000-memory.dmp
    Filesize

    256KB

  • memory/2404-93-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB