Analysis

  • max time kernel
    120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    27/02/2024, 18:39

General

  • Target

    $PROGRAM_FILES/Baidu/Toolbar/BaiduBarX_Tmp/BaiduBarX.dll

  • Size

    2.3MB

  • MD5

    3c2b8a41a1706ca9aa5efc33defaf7cc

  • SHA1

    d9f8608170901445f69585dbc7d07d3d205e987e

  • SHA256

    3fa7b750c18fbc761feaf3c738c0804ea8f02969b73764082b94ff7f60ce13b5

  • SHA512

    9704f399f9beb80d3e91cb8f0bd018351ff031c0fb390ef3d4fdb7b90faf9f0993d49579f8ccafa7e3480f502c1594021f72e1d990327e72e6aa01ecbbd9277c

  • SSDEEP

    49152:KY470bLUv62Xa2mXExRCZfETFPSHAnUWTOeKDF7ssT9F:f470bLUv62Xa2jxR2cXq

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

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

  • Drops file in Program Files directory 4 IoCs
  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$PROGRAM_FILES\Baidu\Toolbar\BaiduBarX_Tmp\BaiduBarX.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2180
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\$PROGRAM_FILES\Baidu\Toolbar\BaiduBarX_Tmp\BaiduBarX.dll
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Drops file in Program Files directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:2928
      • C:\Program Files (x86)\Baidu\Toolbar\BarBroker.exe
        "C:\Program Files (x86)\Baidu\Toolbar\BarBroker.exe" -RegServer
        3⤵
        • Executes dropped EXE
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:2392

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Baidu\Toolbar\BarBroker.exe

    Filesize

    64KB

    MD5

    515d563b812034eaecbc4586cd056810

    SHA1

    5dd72e8df3507de916726873bb36849a40bd248d

    SHA256

    d78db4102515a1e9615225851eaa5ae1451b26c31f24cdc5c8bc167b10633181

    SHA512

    a389f59635a59aa2bb36f420c986250d3f69cab3353749567601971cafb0cbe5f92daf1af0d92bac2c3c7525a09f98b2f62a3f580a6e16f10472014f1b55c553

  • C:\Program Files (x86)\Baidu\Toolbar\BarBroker.exe

    Filesize

    31KB

    MD5

    7b910994076710c3f73206471ba4225f

    SHA1

    57b37035dc43ce70c6dd81b79345cd47632936f3

    SHA256

    bef0b10eaa964c6b59cfe55a618834991db76420d7fafb17e4be7267348b6887

    SHA512

    278d56f8f1a1d9572cd42295aef3fa2c84fbebdeed9187eb1b546422ea05162c5ede3b97bf6c70ed9b893df437a7825ef6a370bfecddd87d1b0e2f82c8e3e3d1

  • \Program Files (x86)\Baidu\Toolbar\BaiduBarX.dll

    Filesize

    2.3MB

    MD5

    3c2b8a41a1706ca9aa5efc33defaf7cc

    SHA1

    d9f8608170901445f69585dbc7d07d3d205e987e

    SHA256

    3fa7b750c18fbc761feaf3c738c0804ea8f02969b73764082b94ff7f60ce13b5

    SHA512

    9704f399f9beb80d3e91cb8f0bd018351ff031c0fb390ef3d4fdb7b90faf9f0993d49579f8ccafa7e3480f502c1594021f72e1d990327e72e6aa01ecbbd9277c

  • \Program Files (x86)\Baidu\Toolbar\BarBroker.exe

    Filesize

    139KB

    MD5

    aa227e7d1c65b3b5745a9abab5eb3169

    SHA1

    d76f9a6622ee6b4903513398b33f3410ad1de180

    SHA256

    05bd041deb4a318b769cfc7243d3df8d81fbd18851948aebd2a0045159b2bc55

    SHA512

    df6e27d506e4c46c02e01d58b20569f16677ebdf829b6a4f99dc32254e5cd6b359e3e71f02950ce9f61e4cf1eb7b3ad07ba142ef83d35ec0e371f5e26fd74b8a

  • \Program Files (x86)\Baidu\Toolbar\BarBroker.exe

    Filesize

    128KB

    MD5

    378c0b90c838a82996e5b2076f87c305

    SHA1

    bf199b96ab706982f4568159c2b6eb7278575ff6

    SHA256

    89b51be4b06cbdde80e0fc256502ef42b005b55d6596e7843a46e9ce6b7349f7

    SHA512

    f772a398fde3553c1f70716ddd6dc60df96262bbf01492ffe8a8bd04be81dcc2ae21bdae34a0389170af79ddf519e01decae2ef49edffddc6d2d7af5d9f807be

  • \Program Files (x86)\Baidu\Toolbar\BarBroker.exe

    Filesize

    229KB

    MD5

    12541c0a098a1ed1756be6d54d5fbc2c

    SHA1

    5ad9876ddf91ef9992a1ec83bf70becab5c3be23

    SHA256

    86eeaecc3ef104471423d3e280b26d03d95b80122e8178ab98d582115b403a06

    SHA512

    0f5d9292f3548b69d65688002554cc957b9b6b3e7179b1f0fa31fc4c134b9536378b74b6295223437d02827d97696952abac9566a8904edb2fb8cab577593c5b

  • \Program Files (x86)\Baidu\Toolbar\rc.dll

    Filesize

    369KB

    MD5

    a75aab3e55d19694dc896a17e4fe5cb4

    SHA1

    1d5bcdaf5bf213d22eb865f2ac90c4059c5c3e23

    SHA256

    b0b1f00b4cfebbed6772af28a7b89edd6c1786f671672cf0e476499e34dfbe33

    SHA512

    da41da1bbb97548dee9aa07b0a7cbdc11804dd770b46f94f4ed15637e4f9622c3987ea04ffc0e0a54b5272524197d4fb96251a74e390cb5c1a46bfdb1343e4b1

  • memory/2928-2-0x0000000002470000-0x00000000026CA000-memory.dmp

    Filesize

    2.4MB

  • memory/2928-9-0x0000000001F50000-0x0000000001FAC000-memory.dmp

    Filesize

    368KB