Analysis

  • max time kernel
    119s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    06/08/2023, 11:26

General

  • Target

    84581e88899b708baa7d514da1a4791f_gandcrab_neshta_JC.exe

  • Size

    110KB

  • MD5

    84581e88899b708baa7d514da1a4791f

  • SHA1

    768704837b8b86b8110cac99d64456667126bc15

  • SHA256

    549efb102e73e9f2bf3052061e05f217b3b87a8d09eae8debfff8cbd0a5f83fb

  • SHA512

    b7111cbbc96e4ea344deea84093f382d359b52104ab76af725c73197d4afcebf96db93c25e229792e970b74906f886b13c986838d10b5984301c07132e4f4774

  • SSDEEP

    1536:JxqjQ+P04wsmJCobAV2/S2OvvdZEcdf+ZZZZZZZZZZZZpXzzzzzzzzzzzzADypcU:sr85Cx2/Ovvdrfdd5BJHMqqDH

Malware Config

Signatures

  • Detect Neshta payload 5 IoCs
  • GandCrab payload 5 IoCs
  • Gandcrab

    Gandcrab is a Trojan horse that encrypts files on a computer.

  • 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 3 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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).

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\84581e88899b708baa7d514da1a4791f_gandcrab_neshta_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\84581e88899b708baa7d514da1a4791f_gandcrab_neshta_JC.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:2976
    • C:\Users\Admin\AppData\Local\Temp\3582-490\84581e88899b708baa7d514da1a4791f_gandcrab_neshta_JC.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\84581e88899b708baa7d514da1a4791f_gandcrab_neshta_JC.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Suspicious behavior: EnumeratesProcesses
      PID:2380

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

    Filesize

    547KB

    MD5

    cf6c595d3e5e9667667af096762fd9c4

    SHA1

    9bb44da8d7f6457099cb56e4f7d1026963dce7ce

    SHA256

    593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

    SHA512

    ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

  • C:\Users\Admin\AppData\Local\Temp\3582-490\84581e88899b708baa7d514da1a4791f_gandcrab_neshta_JC.exe

    Filesize

    70KB

    MD5

    58d6eab3aafd9139a2f1c7606ecd4cef

    SHA1

    4152a7431b3d5dd8b0f6ad08148cb166315f41e9

    SHA256

    02f5c32fa22fdc43924718b66ff5aec3115f5d0e1d7bb873b1cd2440eee016d6

    SHA512

    ae92012d8401c886cb898ac0134db1567aaefb467d04d7afdb4e3e6b390b929dc353467d55b8cce5f3c74c942ac79ce565c172e296468ac44b3d8bd730a52c49

  • C:\Users\Admin\AppData\Local\Temp\3582-490\84581e88899b708baa7d514da1a4791f_gandcrab_neshta_JC.exe

    Filesize

    70KB

    MD5

    58d6eab3aafd9139a2f1c7606ecd4cef

    SHA1

    4152a7431b3d5dd8b0f6ad08148cb166315f41e9

    SHA256

    02f5c32fa22fdc43924718b66ff5aec3115f5d0e1d7bb873b1cd2440eee016d6

    SHA512

    ae92012d8401c886cb898ac0134db1567aaefb467d04d7afdb4e3e6b390b929dc353467d55b8cce5f3c74c942ac79ce565c172e296468ac44b3d8bd730a52c49

  • C:\Users\Admin\AppData\Local\Temp\3582-490\84581e88899b708baa7d514da1a4791f_gandcrab_neshta_JC.exe

    Filesize

    70KB

    MD5

    58d6eab3aafd9139a2f1c7606ecd4cef

    SHA1

    4152a7431b3d5dd8b0f6ad08148cb166315f41e9

    SHA256

    02f5c32fa22fdc43924718b66ff5aec3115f5d0e1d7bb873b1cd2440eee016d6

    SHA512

    ae92012d8401c886cb898ac0134db1567aaefb467d04d7afdb4e3e6b390b929dc353467d55b8cce5f3c74c942ac79ce565c172e296468ac44b3d8bd730a52c49

  • \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\84581e88899b708baa7d514da1a4791f_gandcrab_neshta_JC.exe

    Filesize

    70KB

    MD5

    58d6eab3aafd9139a2f1c7606ecd4cef

    SHA1

    4152a7431b3d5dd8b0f6ad08148cb166315f41e9

    SHA256

    02f5c32fa22fdc43924718b66ff5aec3115f5d0e1d7bb873b1cd2440eee016d6

    SHA512

    ae92012d8401c886cb898ac0134db1567aaefb467d04d7afdb4e3e6b390b929dc353467d55b8cce5f3c74c942ac79ce565c172e296468ac44b3d8bd730a52c49

  • \Users\Admin\AppData\Local\Temp\3582-490\84581e88899b708baa7d514da1a4791f_gandcrab_neshta_JC.exe

    Filesize

    70KB

    MD5

    58d6eab3aafd9139a2f1c7606ecd4cef

    SHA1

    4152a7431b3d5dd8b0f6ad08148cb166315f41e9

    SHA256

    02f5c32fa22fdc43924718b66ff5aec3115f5d0e1d7bb873b1cd2440eee016d6

    SHA512

    ae92012d8401c886cb898ac0134db1567aaefb467d04d7afdb4e3e6b390b929dc353467d55b8cce5f3c74c942ac79ce565c172e296468ac44b3d8bd730a52c49

  • memory/2976-143-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2976-144-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2976-145-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2976-147-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB