Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    19-05-2024 19:28

General

  • Target

    1fea382a93766b6fbdfc53ba398b0de60264a3b752b35bd682ffaf3db0654501.exe

  • Size

    280KB

  • MD5

    369a9ff3917fc02674679ea721201156

  • SHA1

    58be57857fa33aa1bfa9d2b080c438ea67615484

  • SHA256

    1fea382a93766b6fbdfc53ba398b0de60264a3b752b35bd682ffaf3db0654501

  • SHA512

    421fba3af112fa6c11b219ba68b48e46edd77d23a17c2f4a83fc4031558162d0edae261c53afd971a5385ddc5b09a9f742dbeeeddfa3f2cbd7335c2025dc7d6c

  • SSDEEP

    6144:k95IJZiCgq1gQb4KgLqMIuLRTK83KrAqGYoKbfO8otJ:bZiCgSgQb4KgLqMIuLRTwrAq1oKzO8o/

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.

  • 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 behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1fea382a93766b6fbdfc53ba398b0de60264a3b752b35bd682ffaf3db0654501.exe
    "C:\Users\Admin\AppData\Local\Temp\1fea382a93766b6fbdfc53ba398b0de60264a3b752b35bd682ffaf3db0654501.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:2548
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1fea382a93766b6fbdfc53ba398b0de60264a3b752b35bd682ffaf3db0654501.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1fea382a93766b6fbdfc53ba398b0de60264a3b752b35bd682ffaf3db0654501.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2308
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2308 -s 1188
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2632

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\1fea382a93766b6fbdfc53ba398b0de60264a3b752b35bd682ffaf3db0654501.exe
    Filesize

    240KB

    MD5

    b89051e8cf348e69c0943b540af3b99c

    SHA1

    50200e338cb5df75077c6144884bf0ff6bf7cc7a

    SHA256

    2e0a0e7e5d510f4274cd22ca2ed10f4bcca932a8cb2a756a47c13fb36a5fb58d

    SHA512

    ab1e75c6ccf80fdd29bb35ec802032a46cf642e444ba392a2224cc025d05d78148f60bf81d4405b25301ce86b83e03d9249378864afa575fa6a61f05dea21408

  • memory/2308-12-0x0000000073FCE000-0x0000000073FCF000-memory.dmp
    Filesize

    4KB

  • memory/2308-13-0x00000000009B0000-0x00000000009F2000-memory.dmp
    Filesize

    264KB

  • memory/2308-14-0x0000000073FC0000-0x00000000746AE000-memory.dmp
    Filesize

    6.9MB

  • memory/2308-95-0x0000000073FCE000-0x0000000073FCF000-memory.dmp
    Filesize

    4KB

  • memory/2308-96-0x0000000073FC0000-0x00000000746AE000-memory.dmp
    Filesize

    6.9MB

  • memory/2548-92-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2548-94-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB