Analysis

  • max time kernel
    115s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 20:52

General

  • Target

    ad1a005af392fe578b6214019cc76ea8a158af75da66040531fcde01b89543d6.exe

  • Size

    4.5MB

  • MD5

    2658031d239982c0d039d9c1bca8258b

  • SHA1

    bb84a5b9a05550f36497f0af51a2276b9772a219

  • SHA256

    ad1a005af392fe578b6214019cc76ea8a158af75da66040531fcde01b89543d6

  • SHA512

    27f9a08e1e125f0c4fe35e078bd1274f891915d22e0db3a586939b4e220a9b8b15d451aae7f89684af940e6661dd2f66bfa8e2b4638a89dabff97586633626cd

  • SSDEEP

    49152:9eaK64wezdYTy0Haxup4kpwdGKvghxfki1NOCrZguQxB+lyzEJ3jM1:sLweqm01Kc+WZg0YiTM

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\ad1a005af392fe578b6214019cc76ea8a158af75da66040531fcde01b89543d6.exe
    "C:\Users\Admin\AppData\Local\Temp\ad1a005af392fe578b6214019cc76ea8a158af75da66040531fcde01b89543d6.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:1716
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\nAVJlW9HKffcXW.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:268
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\nAVJlW9HKffcXW.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1176

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

3
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\GoSave\nAVJlW9HKffcXW.dat
    Filesize

    4KB

    MD5

    eab7fd97c14551f0324afde9ecc9eabb

    SHA1

    a7fcd69ab9232151a52d1f04b139d7498a266fe2

    SHA256

    2a0242771a92da64963a7cba8f5ff9f09fbc278ef96b18cfc0425aa4f92694ca

    SHA512

    9eae7edf10f5534ae64c5c6b2b1e69dfb3045de5595ba7b8925542ea67532c29423975912e6ba38dc74eedd754ec33b4b17f01f2e19d86c14e37a79c66b78049

  • C:\Program Files (x86)\GoSave\nAVJlW9HKffcXW.tlb
    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Program Files (x86)\GoSave\nAVJlW9HKffcXW.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\nAVJlW9HKffcXW.dll
    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • \Program Files (x86)\GoSave\nAVJlW9HKffcXW.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\nAVJlW9HKffcXW.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/268-61-0x0000000000000000-mapping.dmp
  • memory/1176-65-0x0000000000000000-mapping.dmp
  • memory/1176-66-0x000007FEFB941000-0x000007FEFB943000-memory.dmp
    Filesize

    8KB

  • memory/1716-54-0x00000000757E1000-0x00000000757E3000-memory.dmp
    Filesize

    8KB

  • memory/1716-55-0x0000000002AA0000-0x0000000002B69000-memory.dmp
    Filesize

    804KB