Analysis

  • max time kernel
    17s
  • max time network
    65s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 05:24

General

  • Target

    05573f45ef597e307247f2be24e03fd9ec33896a5d52d52c3f06bfdbef0b8d37.exe

  • Size

    4.5MB

  • MD5

    95e6f4b2c5404ee98dfcd93dbf6f81fb

  • SHA1

    d271cbedbe89a24fe70977211376cc37ef9bad30

  • SHA256

    05573f45ef597e307247f2be24e03fd9ec33896a5d52d52c3f06bfdbef0b8d37

  • SHA512

    91b2e3b855cb1f8b8481243a96c6875c5085412da9e71036ad547ab9a07d836980c904f18116006a5751ec7163ba6b6f8fe5d6e43e0a6e96eb3e57c1f6d89ef9

  • SSDEEP

    98304:uOJEf20RLf8kpthCzP5t7SKRoWNAxen2:FJkqP5UK8on2

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\05573f45ef597e307247f2be24e03fd9ec33896a5d52d52c3f06bfdbef0b8d37.exe
    "C:\Users\Admin\AppData\Local\Temp\05573f45ef597e307247f2be24e03fd9ec33896a5d52d52c3f06bfdbef0b8d37.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:1384
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\sx3JTwPEW2KYYO.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:576
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\sx3JTwPEW2KYYO.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:760

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\sx3JTwPEW2KYYO.dat
    Filesize

    4KB

    MD5

    0dadadd1459b30d6f5c089552cb26c99

    SHA1

    83be76d3b8536f3349da1643f1eacdfe7b6dbde4

    SHA256

    1eb64d009a33ba27710af9659f4e39bf7c4cbb7851829005c359aa63338bc42e

    SHA512

    73ce2d8f97e3f35dbdbba4e4715b9c3497348c78129997beefd63f8250aec5f5c6d10e46e079df98ca8061640e4b71069cca2dd92bb4e379594852164bbf1fdf

  • C:\Program Files (x86)\GoSave\sx3JTwPEW2KYYO.tlb
    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Program Files (x86)\GoSave\sx3JTwPEW2KYYO.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\sx3JTwPEW2KYYO.dll
    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • \Program Files (x86)\GoSave\sx3JTwPEW2KYYO.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\sx3JTwPEW2KYYO.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/576-61-0x0000000000000000-mapping.dmp
  • memory/760-65-0x0000000000000000-mapping.dmp
  • memory/760-66-0x000007FEFBB91000-0x000007FEFBB93000-memory.dmp
    Filesize

    8KB

  • memory/1384-54-0x00000000754C1000-0x00000000754C3000-memory.dmp
    Filesize

    8KB

  • memory/1384-55-0x0000000002A30000-0x0000000002AF9000-memory.dmp
    Filesize

    804KB