Analysis

  • max time kernel
    150s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-11-2024 06:03

General

  • Target

    kugou_yinyue-X64.msi

  • Size

    115.7MB

  • MD5

    8264ac335dd2c9b6f3c22826833eef9a

  • SHA1

    6b45e44fb10381e96e5cba2004bfbc08a3eec3cd

  • SHA256

    4defef20d0c620fcc1743147f44a244fa7c61b484a5ca5cfb8f60e99e970a7a2

  • SHA512

    1a65be0f908edabe532232193cab034921065ff4fb898637b1c82a17d29874335758c93f779b7666384c0d6e6fe4eb46b5a6882986d6b742dd1a8be0e1df2fbb

  • SSDEEP

    3145728:rydOHVo966Gx85U9YwMWYA2/8JZVtG37GDOUaDZjfFSfho:0H1GxkcBrYt/8J8SarDZ7FSfu

Malware Config

Signatures

  • Detect PurpleFox Rootkit 4 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 4 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • Gh0strat family
  • PurpleFox

    PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.

  • Purplefox family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 17 IoCs
  • Drops file in Windows directory 8 IoCs
  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 56 IoCs
  • Modifies registry class 22 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\kugou_yinyue-X64.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4396
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3972
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:648
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding 96A3A90B08492D6C8F735AAA493B819D E Global\MSI0000
      2⤵
      • Modifies data under HKEY_USERS
      • Suspicious use of WriteProcessMemory
      PID:2092
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\DeployDeterminedRetailer'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5044
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c start "" "C:\Program Files\DeployDeterminedRetailer\UsfWMVCzYNmv.exe" x "C:\Program Files\DeployDeterminedRetailer\QnEAZeOBmPdAEfzPaPmE" -o"C:\Program Files\DeployDeterminedRetailer\" -pkYpyaRvRcFdTfVUfUNOC -y
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1264
        • C:\Program Files\DeployDeterminedRetailer\UsfWMVCzYNmv.exe
          "C:\Program Files\DeployDeterminedRetailer\UsfWMVCzYNmv.exe" x "C:\Program Files\DeployDeterminedRetailer\QnEAZeOBmPdAEfzPaPmE" -o"C:\Program Files\DeployDeterminedRetailer\" -pkYpyaRvRcFdTfVUfUNOC -y
          4⤵
          • Drops file in Program Files directory
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:4748
      • C:\Program Files\DeployDeterminedRetailer\YbAWjEbpulWw.exe
        "C:\Program Files\DeployDeterminedRetailer\YbAWjEbpulWw.exe" -number 289 -file file3 -mode mode3
        3⤵
        • Drops file in Program Files directory
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:5060
      • C:\Program Files\DeployDeterminedRetailer\kugou11131.exe
        "C:\Program Files\DeployDeterminedRetailer\kugou11131.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2068
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:2936
  • C:\Windows\System32\WScript.exe
    C:\Windows\System32\WScript.exe "C:\Program Files\DeployDeterminedRetailer\YbAWjEbpulWw.vbs"
    1⤵
    • Modifies data under HKEY_USERS
    PID:1632
  • C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.exe
    "C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.exe" install
    1⤵
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Executes dropped EXE
    PID:912
  • C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.exe
    "C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.exe" start
    1⤵
    • Drops file in Program Files directory
    • Executes dropped EXE
    PID:908
  • C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.exe
    "C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.exe"
    1⤵
    • Drops file in Program Files directory
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:716
    • C:\Program Files\DeployDeterminedRetailer\YbAWjEbpulWw.exe
      "C:\Program Files\DeployDeterminedRetailer\YbAWjEbpulWw.exe" -number 149 -file file3 -mode mode3
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:548
      • C:\Program Files\DeployDeterminedRetailer\YbAWjEbpulWw.exe
        "C:\Program Files\DeployDeterminedRetailer\YbAWjEbpulWw.exe" -number 62 -file file3 -mode mode3
        3⤵
        • Enumerates connected drives
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        PID:2224

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Config.Msi\e583f47.rbs

    Filesize

    7KB

    MD5

    79403a2b4509a4c89e1ced15466a36f8

    SHA1

    0efba7758ee523f0837fa27167118ea60cda4e6f

    SHA256

    c3f05e1fd8e277a91b509dccee81a085e0de0f79bbed2083b7067eef8a15b3f4

    SHA512

    c5b08ddeb1f66547af5e041d95a393f9d04b9719e5e6aa8e3607b07029c5bdb7019f268a9c8ed8d34822700018d2c4184272b1be0155439fa7b57c87a676344e

  • C:\Program Files\DeployDeterminedRetailer\QnEAZeOBmPdAEfzPaPmE

    Filesize

    1.5MB

    MD5

    f97e41d5d36b59621dba93d7727cb67b

    SHA1

    b2e9e34874a9cb8c61fc276b9d77a0e1cb0532f0

    SHA256

    a85e5b6d77e5ddc9f00155f1cda319508c92c8e21c16bd99cfc87b15ae774174

    SHA512

    c8de402c10fb3505a7ef7b7ec8039f03b5810e6c38d7b2969865148f0a1ed21e798f386aae9ca2cb1655184accac39169d59cc7e6662ffa213c7a0edc4cd8c67

  • C:\Program Files\DeployDeterminedRetailer\UsfWMVCzYNmv.exe

    Filesize

    577KB

    MD5

    c31c4b04558396c6fabab64dcf366534

    SHA1

    fa836d92edc577d6a17ded47641ba1938589b09a

    SHA256

    9d182f421381429fd77598feb609fefb54dcaef722ddbf5aa611b68a706c10d3

    SHA512

    814dcbc1d43bc037dadc2f3f67856dd790b15fc1b0c50fa74a169c8cc02cdc79d44f1f10e200ef662eee20cd6b5ca646ec4e77673e3fe3cb7dfb7649243f6e99

  • C:\Program Files\DeployDeterminedRetailer\YbAWjEbpulWw.exe

    Filesize

    2.1MB

    MD5

    13c482a12d740c8fc27b23038fa097d4

    SHA1

    4c0d85646dfa60d3dbe9bab472fe1ef3ae8da957

    SHA256

    f12ea05152c21c0de7b9f81b9e9004a40ee7f3c4cf7b63b7918d53c74a1219a6

    SHA512

    73a1df4797a092de6b5fbede88a96d593ba34198f32f44eb390e223ebd0df988e114a7caa19de723b15698fcf884943f004a2d35d4bbd3c2ae18155594e74bbf

  • C:\Program Files\DeployDeterminedRetailer\YbAWjEbpulWw.vbs

    Filesize

    2KB

    MD5

    356d0af8d51ae7f16002536c0434f660

    SHA1

    fe1e6c649951f3fe679777665eb30337913bdc4d

    SHA256

    d8ffa54ce41ca565e0a70aeeafe73655c8121c8e3d103db58e295cb340530b8c

    SHA512

    268ac9057da999a76f8bea43f2c6d6ad824cf9a9d87d7de2ed4bbf5826d211cd84f37005633dff601bf0d56b1afdd88731d98a121cd372016f799b92bda7666c

  • C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.exe

    Filesize

    832KB

    MD5

    d305d506c0095df8af223ac7d91ca327

    SHA1

    679cb4c763c84e75ccb0fa3475bd6b7a36e81c4a

    SHA256

    923111c7142b3dc783a3c722b19b8a21bcb78222d7a136ac33f0ca8a29f4cb66

    SHA512

    94d369a4db88bff9556a1d7a7fb0188ed935c3592bae09335542c5502ec878e839177be63ac3ab4af75d4dc38a3a4f5d0fd423115ac72cf5dd710c59604db796

  • C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.wrapper.log

    Filesize

    296B

    MD5

    973fc3a9f5457f02a4039d048370d755

    SHA1

    7bd7319d3b461f59dbbe05f317e46e83628ff300

    SHA256

    c8b7443589164be258a5d1e1697d0df185cc43cbee7215149dcbd9148eac7a41

    SHA512

    a4e25e557ac39f6d61d9e6f96d08cab2521a6023fad55ee024f776f73c098148d59d77d354f267c756e8b0770b89c54b1d43ecca6980b6746fe5696dcb3ca762

  • C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.wrapper.log

    Filesize

    467B

    MD5

    283ad5c7efac45c4b6364aa07baa0b92

    SHA1

    3bffdc887396f60006c76915a8b33fd19ec16dbe

    SHA256

    de56012f3f3a4511a3e53e95697f865a58b58e06e58f78cebdc30431ddb99d5e

    SHA512

    677d2803869fd9625e751435d364cac61577956ddd8a0d769a80aacbe93f00f8e949587691ee2c49dc61ff986234dcce57e465a4356364a038fcda288f98cb89

  • C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.wrapper.log

    Filesize

    648B

    MD5

    14fe43e1516e676bbc442b037b5e9e23

    SHA1

    3229844e3a67bcb4abebbd9740576019db9cbd0d

    SHA256

    8f21a55879c706a3420a8ba3bdd9e87e9e20dcd6ae4a4314465744fbb393ac32

    SHA512

    e7cbea631c2ad42d4ebf1d8eb67d64ed15ed863e3379da9508c5b260f41d3a0089ad06aeff786a406767990f11ced8c833d7cee889368ab976b67f123e3ead2a

  • C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.wrapper.log

    Filesize

    797B

    MD5

    eb44b1970e0c7e5296ad15620330471d

    SHA1

    e8dd24852696b16ba18063c66dd22cf0d6eea0e3

    SHA256

    e22a1da7765601ba86ff72662ee45fd37d3ba2062400359b44f4b0101ca221e7

    SHA512

    b9fb0ae06ff27b6473955c29eae0305ee3e7b82eaac8711bcbb05bf40f6b769d52682e206ce460ba3c7dd454efff74b660c44f3fc154a47d1b62d55966feb2b1

  • C:\Program Files\DeployDeterminedRetailer\yINMOeuVvrtK.xml

    Filesize

    462B

    MD5

    80f071c1613d7880de16db74f25032b3

    SHA1

    c47536a65da37af688ed63f2f39c5b21fc09a4a6

    SHA256

    62e2cd96cf9208a576ab674db3503d8d3b83f0d26382c14dabb9071be878e894

    SHA512

    1e30378ff3baf8f74661b12f7ce193645528daa5815b59d48e36994c8b9c630c6e43ca06fc47a21318b76ff9b04d5224f48f2986dd6eb4b9d37268f74f5f7702

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cdmjz0ck.g3t.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\nst73E4.tmp\System.dll

    Filesize

    40KB

    MD5

    88513dbed3a5bba74d020b0d56ae587a

    SHA1

    f0f4f6f7e5e423ad1918ea553aa9e5c2ca75370a

    SHA256

    cbce0c9051e6f4724070186feb71255e01f606f6f0d2ca1d2fcbc8c942d8e11f

    SHA512

    6a61e4700c286202741cb344b4f6851573084b2dd78639f642252a9d5bcc35734fc7daa9d4e5d083577a0d4887d5a4a20ac04100b178205269fe13eb9d7393a7

  • C:\Users\Admin\AppData\Local\Temp\nst73E4.tmp\isx.dll

    Filesize

    1.4MB

    MD5

    c65109a207007208ef83b48de15d1145

    SHA1

    d76057c4e67f850c2100c31c1222618efeed146b

    SHA256

    4aaffbd45bc8d3498c76f78dba9b95f920367af37020e382099961437e89d071

    SHA512

    b2c34bfb1ff5b3272780e9d2f89ff09e2146daa783f3a860aa30cac06b28c6063f2349cc30dd20e154565ad1e6310cd45d33e683f336c8f4905ebd15e5543370

  • C:\Users\Admin\AppData\Local\Temp\nst73E4.tmp\kgskin.dll

    Filesize

    524KB

    MD5

    5a671b81a0d59cd5192b1861b65f2543

    SHA1

    f679af0550a31a5cfbaa1b055cfaf2396027e391

    SHA256

    5c7b02317096c5fe6fcfe173711e06aeb288c916e97a2abfe5939907744e0d97

    SHA512

    6d76a6ac670e147335760a03288c6fc7e99c18611edfa859f4e76027bd937ac0a650479bdd2d09f9b94bb56bc81e3d292a42769c763971ff9a24d9566d22b442

  • C:\Users\Admin\AppData\Local\Temp\nst73E4.tmp\svg.dll

    Filesize

    3.3MB

    MD5

    f7b407c2c1600587cb6e5679a93250fb

    SHA1

    00b0cbedff910b4016cb957d6043eadb99575dd0

    SHA256

    3ca02f89d98b7781c242b60029ddeb4f6b8610b624c0b70c6347a50b49f59024

    SHA512

    428ae534ea6af1986f596b4a38b45926d2fe19cab09544fcc601a0a615e1ac45129e4eb88ac58489694b6b0c1a22514003eac5fdd0a7497cc719c1e047ad6624

  • C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\yINMOeuVvrtK.exe.log

    Filesize

    1KB

    MD5

    122cf3c4f3452a55a92edee78316e071

    SHA1

    f2caa36d483076c92d17224cf92e260516b3cbbf

    SHA256

    42f5774d1ee4cae5d7a4e83970da42bb17e61ae93c312247211b5ee3535662e0

    SHA512

    c98666fb86aaff6471c0a96f12f037b9a607579c5891c9d7ba8cd4e90506ca7aa5b5f6264081d25f703c88fb69d8e2cd87809d508e771770550d0c5d4d17d91c

  • \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2

    Filesize

    24.1MB

    MD5

    35a5bad57a1549b28a84abb72ee59055

    SHA1

    0a2b9a50ad4b24b2dd3f21cd8fa6bc51b0a7a6c3

    SHA256

    b2e3a2b053c235a8b0682d812a5241166ef908ec9ada34e0fb0e12a2e5c2cb27

    SHA512

    224b0ba559bba236bf91d9e1b1d4acfd4da66600d412d900201e8e43769172f7104f6aaaec81cb00c44c732a64d4eaa6a1d5fdff02a72e85e739242fcec496a5

  • \??\Volume{fb297ba4-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{2c4c9041-537f-4726-869e-844a5ce4ca0d}_OnDiskSnapshotProp

    Filesize

    6KB

    MD5

    df130406c4e7a9cb447fcffdb7a61ba6

    SHA1

    78385bbb7e133ad93c56318d9b84725368dee508

    SHA256

    f2630656385eab737dd67b1720d5a39d7a9a8762ece641f658fc57c8b59e1eba

    SHA512

    fc8ee2249854987d9f9a0b664f5561ff4b67839ee9801d773c50a8df46f40ef196fadd9cc4c04f9855b2530a33598434c839fdec1e8e7bd0eb173c811ee4b356

  • memory/912-66-0x00000000007C0000-0x0000000000896000-memory.dmp

    Filesize

    856KB

  • memory/2224-250-0x000000002B870000-0x000000002B8BD000-memory.dmp

    Filesize

    308KB

  • memory/2224-251-0x000000002BCF0000-0x000000002BEAD000-memory.dmp

    Filesize

    1.7MB

  • memory/2224-253-0x000000002BCF0000-0x000000002BEAD000-memory.dmp

    Filesize

    1.7MB

  • memory/2224-254-0x000000002BCF0000-0x000000002BEAD000-memory.dmp

    Filesize

    1.7MB

  • memory/2224-255-0x000000002BCF0000-0x000000002BEAD000-memory.dmp

    Filesize

    1.7MB

  • memory/5044-22-0x0000018A73F60000-0x0000018A73F82000-memory.dmp

    Filesize

    136KB

  • memory/5060-41-0x000000002A040000-0x000000002A06F000-memory.dmp

    Filesize

    188KB