Analysis

  • max time kernel
    41s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 23:15

General

  • Target

    7e2b32ef3945b61334c333b614de6007489a256823bbfb225755c827b2f85fd1.exe

  • Size

    4.5MB

  • MD5

    eddc486ca6063beb669e0b07399c4409

  • SHA1

    d1017d098a70997a94631ff081379930019f19df

  • SHA256

    7e2b32ef3945b61334c333b614de6007489a256823bbfb225755c827b2f85fd1

  • SHA512

    1b76e7316187a2efa44e5b1ab99c8e644b7d6598b99c41f9106be7579fd446a64ee32c78d913041d9f0c921278ded4ddb7d90e279272d482c59dec4242b9b231

  • SSDEEP

    49152:QIaK6pJEqd+Ti0Haxup4Dc2ppWmD/M2BKQl+9buOBqFyjSlM/Zf0weeDNxMB:VOJEf20D2pp1D/EbuOBqFyj8MNtLNxM

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\7e2b32ef3945b61334c333b614de6007489a256823bbfb225755c827b2f85fd1.exe
    "C:\Users\Admin\AppData\Local\Temp\7e2b32ef3945b61334c333b614de6007489a256823bbfb225755c827b2f85fd1.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:1788
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\aUH10G2l5it3Q4.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1104
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\aUH10G2l5it3Q4.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1720

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\GoSave\aUH10G2l5it3Q4.dat

    Filesize

    4KB

    MD5

    f728654477cd3f10abaf738f830bae46

    SHA1

    36b09f44b15a7d230eaf9c0044583c8f5a8272b8

    SHA256

    145505fe41fcf5e21765cd56e59fa5342a2b447962ac298c6d0d76b4bfd3689a

    SHA512

    330199c4f3c61ba48f52caec3b3125c367baad7373103b4c18bd8312c8ed3ca6ea979b06add42d39abe2ed0a0314e097794a18b0b126cd0dfe251e6347898c18

  • C:\Program Files (x86)\GoSave\aUH10G2l5it3Q4.tlb

    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Program Files (x86)\GoSave\aUH10G2l5it3Q4.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\aUH10G2l5it3Q4.dll

    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • \Program Files (x86)\GoSave\aUH10G2l5it3Q4.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\aUH10G2l5it3Q4.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/1104-61-0x0000000000000000-mapping.dmp

  • memory/1720-65-0x0000000000000000-mapping.dmp

  • memory/1720-66-0x000007FEFBD01000-0x000007FEFBD03000-memory.dmp

    Filesize

    8KB

  • memory/1788-54-0x0000000076321000-0x0000000076323000-memory.dmp

    Filesize

    8KB

  • memory/1788-55-0x00000000009F0000-0x0000000000AB9000-memory.dmp

    Filesize

    804KB