Analysis

  • max time kernel
    183s
  • max time network
    197s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    07-06-2022 17:19

General

  • Target

    1be02442a73833d35becd77c39e72440c3a600dba746912931f506311c745593.exe

  • Size

    264KB

  • MD5

    e218ac1dac5d3f3a9de8aa098fe5f3cb

  • SHA1

    db4ea2a514ddb57a61d7e91836960cb072068803

  • SHA256

    1be02442a73833d35becd77c39e72440c3a600dba746912931f506311c745593

  • SHA512

    3640a1bd9f97eae176d7e745f621f62a5d7075a8b2ffb657a6720ceab3866cbf5b1c59de23cf0ed332d6ae99c9efa9eec12a4cf45fa8047611304cd64bd66a84

Malware Config

Signatures

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

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

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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). Likely ransomware behaviour.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\1be02442a73833d35becd77c39e72440c3a600dba746912931f506311c745593.exe
    "C:\Users\Admin\AppData\Local\Temp\1be02442a73833d35becd77c39e72440c3a600dba746912931f506311c745593.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3372
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1be02442a73833d35becd77c39e72440c3a600dba746912931f506311c745593.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1be02442a73833d35becd77c39e72440c3a600dba746912931f506311c745593.exe"
      2⤵
      • Executes dropped EXE
      PID:804

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Change Default File Association

1
T1042

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\1be02442a73833d35becd77c39e72440c3a600dba746912931f506311c745593.exe
    Filesize

    224KB

    MD5

    79b3fbd0907d9a68bc11e3c2d57c9a1a

    SHA1

    29555b79610995915038444164490805a19a3224

    SHA256

    b0c52d844acc4899008a4e01b16e5436708f07327d9a69d0b463b02f091c3e63

    SHA512

    00cbea2a5f2c1fbc867411cfcb7ee36e95f5d72ad73d7918950b9aa200378bc4e5deb992ee3cca5ca66235c0776c0f11944a41cd628af03d56cdcfcc6c4bf135

  • C:\Users\Admin\AppData\Local\Temp\3582-490\1be02442a73833d35becd77c39e72440c3a600dba746912931f506311c745593.exe
    Filesize

    224KB

    MD5

    79b3fbd0907d9a68bc11e3c2d57c9a1a

    SHA1

    29555b79610995915038444164490805a19a3224

    SHA256

    b0c52d844acc4899008a4e01b16e5436708f07327d9a69d0b463b02f091c3e63

    SHA512

    00cbea2a5f2c1fbc867411cfcb7ee36e95f5d72ad73d7918950b9aa200378bc4e5deb992ee3cca5ca66235c0776c0f11944a41cd628af03d56cdcfcc6c4bf135

  • memory/804-130-0x0000000000000000-mapping.dmp
  • memory/804-133-0x0000000000990000-0x00000000009C4000-memory.dmp
    Filesize

    208KB

  • memory/804-134-0x0000000007780000-0x000000000781C000-memory.dmp
    Filesize

    624KB

  • memory/804-135-0x0000000007DD0000-0x0000000008374000-memory.dmp
    Filesize

    5.6MB

  • memory/804-136-0x0000000007820000-0x00000000078B2000-memory.dmp
    Filesize

    584KB

  • memory/804-137-0x0000000007730000-0x000000000773A000-memory.dmp
    Filesize

    40KB

  • memory/804-138-0x00000000054F0000-0x0000000005546000-memory.dmp
    Filesize

    344KB