Analysis

  • max time kernel
    40s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 19:16

General

  • Target

    ca29afa1e2e2dcb5b9ec329ffbb381a4fdf8e35cbeeaeb033c36fb8ebccac9be.exe

  • Size

    4.5MB

  • MD5

    697df6c857cfb3a70349fc2e1aba5f1f

  • SHA1

    1bdc6263e65de897145184687f9e4d68e464c756

  • SHA256

    ca29afa1e2e2dcb5b9ec329ffbb381a4fdf8e35cbeeaeb033c36fb8ebccac9be

  • SHA512

    7c3449c1ee7f803bdf2ccf1ed0196c79e4b1c437817c6953ae77a46dc2de94e1a65ad0f086342ca23d87b9c45c293e956b3b5b882add9cd9ffa1fd98be4fefcb

  • SSDEEP

    49152:AIaK6pJEqd+Ti0Haxup4FI3wSdGKvghxfki1y9buOBqF6yoC3yE/Ac5mWxnmLB:FOJEf20VyKccbuOBqFRoWNAxeno

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\ca29afa1e2e2dcb5b9ec329ffbb381a4fdf8e35cbeeaeb033c36fb8ebccac9be.exe
    "C:\Users\Admin\AppData\Local\Temp\ca29afa1e2e2dcb5b9ec329ffbb381a4fdf8e35cbeeaeb033c36fb8ebccac9be.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:1972
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\tuAZMBRu7LtVAD.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1212
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\tuAZMBRu7LtVAD.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1468

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\tuAZMBRu7LtVAD.dat
    Filesize

    4KB

    MD5

    e1d9d122f1a3c15031323fc2360daf0c

    SHA1

    5af2aeb01001e39372189d4f46c1421e3be08616

    SHA256

    2d2160a0b57ef7c29079b69c1327de1afe121afc066218271082fb742b3d55a0

    SHA512

    f4b35c722d3a5a37ff4fb12dc00f0f2a72d03860ae9d49b39453bdc9d3fdabc74bbe809776dcd900221e54d70a030886b25c57889ef0bcec2664111b0eb8ac2d

  • C:\Program Files (x86)\GoSave\tuAZMBRu7LtVAD.tlb
    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Program Files (x86)\GoSave\tuAZMBRu7LtVAD.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\tuAZMBRu7LtVAD.dll
    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • \Program Files (x86)\GoSave\tuAZMBRu7LtVAD.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\tuAZMBRu7LtVAD.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/1212-61-0x0000000000000000-mapping.dmp
  • memory/1468-65-0x0000000000000000-mapping.dmp
  • memory/1468-66-0x000007FEFBD01000-0x000007FEFBD03000-memory.dmp
    Filesize

    8KB

  • memory/1972-54-0x00000000751A1000-0x00000000751A3000-memory.dmp
    Filesize

    8KB

  • memory/1972-55-0x0000000002A80000-0x0000000002B49000-memory.dmp
    Filesize

    804KB