Analysis

  • max time kernel
    154s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    24-05-2022 03:23

General

  • Target

    3edf392acb5b5b3679cfbbb3a9cdf89fdc86f77af84ca1c2531eed58ec1bb3d5.exe

  • Size

    2.5MB

  • MD5

    629d962a1be2a37941c6491310801aa9

  • SHA1

    f21315141098e7b6a28f01eb7403b06c18861cea

  • SHA256

    3edf392acb5b5b3679cfbbb3a9cdf89fdc86f77af84ca1c2531eed58ec1bb3d5

  • SHA512

    ae9cc7887161a68620ba38ab40c85b17aaf589c68d93c418a01bfe1359db4ef6e78bafd1b694646f3687ed47136523f4fb6118af922fc9de50422c12d1765bda

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
  • Loads dropped DLL 2 IoCs
  • Obfuscated with Agile.Net obfuscator 1 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 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 behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3edf392acb5b5b3679cfbbb3a9cdf89fdc86f77af84ca1c2531eed58ec1bb3d5.exe
    "C:\Users\Admin\AppData\Local\Temp\3edf392acb5b5b3679cfbbb3a9cdf89fdc86f77af84ca1c2531eed58ec1bb3d5.exe"
    1⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1788
    • C:\Users\Admin\AppData\Local\Temp\3582-490\3edf392acb5b5b3679cfbbb3a9cdf89fdc86f77af84ca1c2531eed58ec1bb3d5.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\3edf392acb5b5b3679cfbbb3a9cdf89fdc86f77af84ca1c2531eed58ec1bb3d5.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1940

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

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\3edf392acb5b5b3679cfbbb3a9cdf89fdc86f77af84ca1c2531eed58ec1bb3d5.exe
    Filesize

    2.5MB

    MD5

    1be927a668a2bde2a0a99e23947ba4d6

    SHA1

    b87017a3f93fa68fcaabc36d8c32118d1a9f02d2

    SHA256

    7805d759a1bbbb5d1e430b2a7704943c4bf9abf70772187a8e64997bec4f983d

    SHA512

    b36342db5ee67efbcd5e7d6698b77a96147f8b364c6b6b4442a4a11ce1a6f0c008a83fc58559ee5a363bcd10d2de8c230a858fbc61cffe46aa7d2fdee7927aaf

  • \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\3edf392acb5b5b3679cfbbb3a9cdf89fdc86f77af84ca1c2531eed58ec1bb3d5.exe
    Filesize

    2.5MB

    MD5

    1be927a668a2bde2a0a99e23947ba4d6

    SHA1

    b87017a3f93fa68fcaabc36d8c32118d1a9f02d2

    SHA256

    7805d759a1bbbb5d1e430b2a7704943c4bf9abf70772187a8e64997bec4f983d

    SHA512

    b36342db5ee67efbcd5e7d6698b77a96147f8b364c6b6b4442a4a11ce1a6f0c008a83fc58559ee5a363bcd10d2de8c230a858fbc61cffe46aa7d2fdee7927aaf

  • memory/1788-54-0x0000000075DB1000-0x0000000075DB3000-memory.dmp
    Filesize

    8KB

  • memory/1940-56-0x0000000000000000-mapping.dmp
  • memory/1940-58-0x0000000005300000-0x0000000005686000-memory.dmp
    Filesize

    3.5MB

  • memory/1940-63-0x0000000004FF0000-0x0000000005084000-memory.dmp
    Filesize

    592KB