Analysis

  • max time kernel
    204s
  • max time network
    333s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 12:25

General

  • Target

    53ec719376535457f2a0bc0aa21234800c9970ca6ceec3d008537dc9571b4152.exe

  • Size

    4.4MB

  • MD5

    30bab3ff885b97349bbddde69870e286

  • SHA1

    22d6b8456489aa18918c11ba94b13c3cd7183556

  • SHA256

    53ec719376535457f2a0bc0aa21234800c9970ca6ceec3d008537dc9571b4152

  • SHA512

    443c241b1fccbd59e78847aec15ffe626335d8f861c8cd0c89c3575499c5b5ccdb81a25bd52a91fb155590f42be7ff83c9a50e68686635e8e08e6c726b7047b2

  • SSDEEP

    49152:dYjAWsbAomDBe5vzNF3joV2FHCI/jHlaxrTVOI+F30WySJVR7T+PyW8bwfX3jFkb:TWsombcV2FHCI/jHladVz+FEVK+6fEO

Malware Config

Signatures

  • Registers COM server for autorun 1 TTPs 4 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops Chrome extension 3 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 8 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 8 IoCs
  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\53ec719376535457f2a0bc0aa21234800c9970ca6ceec3d008537dc9571b4152.exe
    "C:\Users\Admin\AppData\Local\Temp\53ec719376535457f2a0bc0aa21234800c9970ca6ceec3d008537dc9571b4152.exe"
    1⤵
    • Loads dropped DLL
    • Drops Chrome extension
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1352
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\ZE2WvaH9ulDjxz.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1092
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\ZE2WvaH9ulDjxz.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1540

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\GoSave\ZE2WvaH9ulDjxz.dat

    Filesize

    4KB

    MD5

    24c39b64faedbed2923584d86f63dd02

    SHA1

    f70e09ec7aea33b94354b0394c2e39a9a5013977

    SHA256

    bd447afeb9addbce8d223562d2e7d84e33f6bcccce41b0cdc9f431a9ed41bfbf

    SHA512

    73f87bd7ef6cd5ec0d278d3457c1ae2545b8054b2266e8d5445800490b810b1d65aa9fdfe11c52df3221f013a3d2944e8e69c9707422e566c6e54b36c27e5d14

  • C:\Program Files (x86)\GoSave\ZE2WvaH9ulDjxz.tlb

    Filesize

    3KB

    MD5

    5b503f1b4056c3d4fbf2d03f88e1adfe

    SHA1

    c8d659ea27bf0ca0bbfd46865d5796589bf9ef68

    SHA256

    231ef0fef77ab6c7fea053f64a9ce7f9e21646b868bfe391962262fc15c9bb6c

    SHA512

    229207201368d9674258389df19132070390f913aa5cc21b7567c515be5f5e0f07cdaa460d497ae355f27f00f7fc75538783d8890f6c9c0e861a7ecb8f520bdb

  • C:\Program Files (x86)\GoSave\ZE2WvaH9ulDjxz.x64.dll

    Filesize

    885KB

    MD5

    1a6b1013f17c1cdc6e98f82cd2568ea8

    SHA1

    c96e7bdba616743a5c05b08a342d89ed102376b0

    SHA256

    fa9dd2bd7850053b251c9b5f27f1ac43ad04abf85de61b1928b7c2d562d3290a

    SHA512

    10596f46c52ca3f50d6b3c7c894fff8b41f4fe920c6e5e0138cf7e95e85bfe1db8d5f1a63939832cd48cf29f571dd36de40ebb931fb9b14a106518ae4fc17ef9

  • \Program Files (x86)\GoSave\ZE2WvaH9ulDjxz.dll

    Filesize

    747KB

    MD5

    d949da968ea04ac3a7ddf0e300bb32be

    SHA1

    581d7d799c538b8e9e578cf57c420fb802d5a201

    SHA256

    5c4756451acf8622efa75639f9131ca8215c165e2ef21cc1ab7f8fee77db462b

    SHA512

    fd00e332af52646425f0d4032bb1bbfc85a44ff274bcf212f1264a29be546db4c1ceab7da32c70248a6baa2c55d2dff47dcb2ac441c783a1d9d1260c4685eb7e

  • \Program Files (x86)\GoSave\ZE2WvaH9ulDjxz.x64.dll

    Filesize

    885KB

    MD5

    1a6b1013f17c1cdc6e98f82cd2568ea8

    SHA1

    c96e7bdba616743a5c05b08a342d89ed102376b0

    SHA256

    fa9dd2bd7850053b251c9b5f27f1ac43ad04abf85de61b1928b7c2d562d3290a

    SHA512

    10596f46c52ca3f50d6b3c7c894fff8b41f4fe920c6e5e0138cf7e95e85bfe1db8d5f1a63939832cd48cf29f571dd36de40ebb931fb9b14a106518ae4fc17ef9

  • \Program Files (x86)\GoSave\ZE2WvaH9ulDjxz.x64.dll

    Filesize

    885KB

    MD5

    1a6b1013f17c1cdc6e98f82cd2568ea8

    SHA1

    c96e7bdba616743a5c05b08a342d89ed102376b0

    SHA256

    fa9dd2bd7850053b251c9b5f27f1ac43ad04abf85de61b1928b7c2d562d3290a

    SHA512

    10596f46c52ca3f50d6b3c7c894fff8b41f4fe920c6e5e0138cf7e95e85bfe1db8d5f1a63939832cd48cf29f571dd36de40ebb931fb9b14a106518ae4fc17ef9

  • memory/1092-61-0x0000000000000000-mapping.dmp

  • memory/1352-54-0x00000000757E1000-0x00000000757E3000-memory.dmp

    Filesize

    8KB

  • memory/1352-55-0x0000000000240000-0x0000000000306000-memory.dmp

    Filesize

    792KB

  • memory/1540-65-0x0000000000000000-mapping.dmp

  • memory/1540-66-0x000007FEFB8A1000-0x000007FEFB8A3000-memory.dmp

    Filesize

    8KB