Analysis

  • max time kernel
    13s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 16:29

General

  • Target

    fd281c8033a4ee2df9a4215416a2b1801dbc98914185023c5efd1fba567803e0.exe

  • Size

    2.5MB

  • MD5

    fbc87b3e5c1682d9448c3fff58166f4b

  • SHA1

    95a13c73882e1295d0ec973c89a80be4f3691c82

  • SHA256

    fd281c8033a4ee2df9a4215416a2b1801dbc98914185023c5efd1fba567803e0

  • SHA512

    fb5dfee3c18533bf45cf92ddaf6527c6da4a5e78b947f5cece452f08a9a95077c28fde1f010865f397cf5b30b3eb0bc9d9b3fae87c134d9ce05080405b167260

  • SSDEEP

    49152:h1Os0CpYO/dJJDHhs6oxRkNfehWfNs4VGufZ9JODSTz4bkV:h1OGly7kNfrNq4V

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 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 11 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
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fd281c8033a4ee2df9a4215416a2b1801dbc98914185023c5efd1fba567803e0.exe
    "C:\Users\Admin\AppData\Local\Temp\fd281c8033a4ee2df9a4215416a2b1801dbc98914185023c5efd1fba567803e0.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2020
    • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\xmfIsWuyYNZjJaC.exe
      .\xmfIsWuyYNZjJaC.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops Chrome extension
      • Installs/modifies Browser Helper Object
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:280
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Program Files (x86)\GoSave\zo2WRoyKFA0Xts.x64.dll"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:568
        • C:\Windows\system32\regsvr32.exe
          /s "C:\Program Files (x86)\GoSave\zo2WRoyKFA0Xts.x64.dll"
          4⤵
          • Loads dropped DLL
          • Installs/modifies Browser Helper Object
          PID:820

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\GoSave\zo2WRoyKFA0Xts.dat

    Filesize

    7KB

    MD5

    a12eb472cc5ebfd2be573480948bb688

    SHA1

    90bfe739fa8bcb4a87e98688a796dec738124f90

    SHA256

    0e0cb36247925002aae83d5054260d1f69b1de47ca6a046c03489f0fde7fe813

    SHA512

    e149c3449fc56c07687251269f98a78ca8ddcb007ea16149832ebb208eebe0500acbc9462516369dbc30d0b8e0047012361c0eb2862a59074dd64d38ed280a8f

  • C:\Program Files (x86)\GoSave\zo2WRoyKFA0Xts.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\[email protected]\bootstrap.js

    Filesize

    2KB

    MD5

    df13f711e20e9c80171846d4f2f7ae06

    SHA1

    56d29cda58427efe0e21d3880d39eb1b0ef60bee

    SHA256

    6c325461fba531a94cf8cbdcfc52755494973df0629ce0ee3fef734ab0838fc4

    SHA512

    6c51cee3bf13f164c4a5c9884cc6053cbf9db9701d34c07dc5761d2c047d3d1f7a361b32996a430107e9a4ce68a29149d747a84c76778a1e8780719a3d30470e

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\[email protected]\chrome.manifest

    Filesize

    35B

    MD5

    622636aa7aab9cc714a7a01859ba950b

    SHA1

    9f8797534d3f8eba9faf231f4acfbd2f825a1fe2

    SHA256

    6be24f1770969ab85faf48b71f09770114618639f80cbc76c303fd6ef662ce5b

    SHA512

    c8c097b01e3ccc993b98af978e9370188892ba93e432bd89e3e51318ef6dcd834cbc0c87a886907f7db2ba775f575b3dac4d67884e4ac257c1795a4f9137f9b8

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\[email protected]\content\bg.js

    Filesize

    9KB

    MD5

    88a54fa6d1b369f3c22747a228859e2c

    SHA1

    5fd1c4198b0add58bd56ac0305089a01c01531e2

    SHA256

    0654750055ab351bb34136976705f8669aba221e50ebcf79e24a6eabe2938696

    SHA512

    10b208f67ba9eef42cee8e6a59035648571553e42b1e42964fa03f122f04f0045900fccb8d1dfad538c8d0d39ab0fcd8beb8527ed7bba679a8cb3301b95389a2

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\[email protected]\install.rdf

    Filesize

    593B

    MD5

    6315cf684bfa0b6022bf78e8b9437aa6

    SHA1

    fd09b577ff285e2f887e98bad0130ee99597ddf5

    SHA256

    a048b091e0c9390c374a386eebff588911920e987a60ce223c44a792c4101ce0

    SHA512

    67f68d65e79971f3e79cff6fdbc87579560d974273c17e47f71ec15534d208f25bc4d86231e58b2b9417730d284d6952ec56813ede3bb5ca9e5df82d049b4eab

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\dcedafnbeemmdgciahbgoncldkkaonoc\background.html

    Filesize

    146B

    MD5

    78294d61aeaea295c37d68190f868e90

    SHA1

    d5c5d64205505eca095e0fa73e0255eb728e8e5b

    SHA256

    f3eab27adecfb85d909906c12da8f4c02fae9fe8a3d6be626debf3116ec05614

    SHA512

    cca60bbbbb5e1363eaac24df8a3aa6de928b5bd4ab64844591a8882e0d16e4fd09ae42ddceb069b552970edc044582ce253dea9c9ff7c8f309f0273ae352ae13

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\dcedafnbeemmdgciahbgoncldkkaonoc\content.js

    Filesize

    144B

    MD5

    fca19198fd8af21016a8b1dec7980002

    SHA1

    fd01a47d14004e17a625efe66cc46a06c786cf40

    SHA256

    332b00395bc23d4cb0bf6506b0fbb7e17d690ed41f91cf9b5d1c481cb1d3e82a

    SHA512

    60f4286b3818f996fab50c09b191fbc82ed1c73b2b98d00b088b5afbbc0368c01819bd3868bd3c6bcb2cd083b719e29c28209317c7411213a25f923cfc1f0e47

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\dcedafnbeemmdgciahbgoncldkkaonoc\lsdb.js

    Filesize

    531B

    MD5

    36d98318ab2b3b2585a30984db328afb

    SHA1

    f30b85fbe08e1d569ad49dfeafaf7cb2da6585a5

    SHA256

    ea2caf61817c6f7781ee049217e51c1083c8fc4f1e08e07792052dfdfa529ae7

    SHA512

    6f61ccda2eba18369409850b2c91c9817fc741755e29a1579646e3816e0deab80e34a5adb9ff865c773793d32ac338163a224dbf363b46420d6ea42a7bbb2b3a

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\dcedafnbeemmdgciahbgoncldkkaonoc\manifest.json

    Filesize

    498B

    MD5

    640199ea4621e34510de919f6a54436f

    SHA1

    dc65dbfad02bd2688030bd56ca1cab85917a9937

    SHA256

    e4aa7c089e32d14ddf584e9de6d007ec16581cd30c248ff7284bc0eb7757d4af

    SHA512

    d64bc524d6df7c4c21a5ddfb0e6636317482ef4dc28006bd0a38d5e26c2db75626f216143026bf8acf3baa11d86c278e902c78afad4f806ca36f9e54bc75ff0a

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\dcedafnbeemmdgciahbgoncldkkaonoc\y1hXO3Dze.js

    Filesize

    6KB

    MD5

    200e48fa112d8dcfbd66313ef4a9e62c

    SHA1

    9a23c339124afcaaedaa88cd6ff51615bec7b240

    SHA256

    1b668df59e4719ac79d52adb4777cab82127c7d6a705ec047416dc57d2787d36

    SHA512

    7079c83cd8ca7bc5937e3d6c3fe86b9c2731f0a2893b419839496fb454b3f1a4e77482b407b3b2fc00a66276c0d431d51d8b2cbf18383c485f7ddfac60442df9

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\xmfIsWuyYNZjJaC.dat

    Filesize

    7KB

    MD5

    a12eb472cc5ebfd2be573480948bb688

    SHA1

    90bfe739fa8bcb4a87e98688a796dec738124f90

    SHA256

    0e0cb36247925002aae83d5054260d1f69b1de47ca6a046c03489f0fde7fe813

    SHA512

    e149c3449fc56c07687251269f98a78ca8ddcb007ea16149832ebb208eebe0500acbc9462516369dbc30d0b8e0047012361c0eb2862a59074dd64d38ed280a8f

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\xmfIsWuyYNZjJaC.exe

    Filesize

    772KB

    MD5

    5ed7019dcd0008dbcd8e54017b8c7dd9

    SHA1

    7e4457da2ff06c2170bad636c9eb7c1bb436fd06

    SHA256

    7f069fe03db518eee8162ba5f65f98f2afd28137dfde9450d26cd47f6cea8eb7

    SHA512

    10cef6104aeca8f7a135d4ffffb907b127f055477af4d98228c7385f0da15677357dfed13fc442ee173f85245224fc4b0ae100b832514c80802c5e5a054b70db

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\xmfIsWuyYNZjJaC.exe

    Filesize

    772KB

    MD5

    5ed7019dcd0008dbcd8e54017b8c7dd9

    SHA1

    7e4457da2ff06c2170bad636c9eb7c1bb436fd06

    SHA256

    7f069fe03db518eee8162ba5f65f98f2afd28137dfde9450d26cd47f6cea8eb7

    SHA512

    10cef6104aeca8f7a135d4ffffb907b127f055477af4d98228c7385f0da15677357dfed13fc442ee173f85245224fc4b0ae100b832514c80802c5e5a054b70db

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\zo2WRoyKFA0Xts.dll

    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\zo2WRoyKFA0Xts.tlb

    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\zo2WRoyKFA0Xts.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\zo2WRoyKFA0Xts.dll

    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • \Program Files (x86)\GoSave\zo2WRoyKFA0Xts.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\zo2WRoyKFA0Xts.x64.dll

    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Users\Admin\AppData\Local\Temp\7zS9EFE.tmp\xmfIsWuyYNZjJaC.exe

    Filesize

    772KB

    MD5

    5ed7019dcd0008dbcd8e54017b8c7dd9

    SHA1

    7e4457da2ff06c2170bad636c9eb7c1bb436fd06

    SHA256

    7f069fe03db518eee8162ba5f65f98f2afd28137dfde9450d26cd47f6cea8eb7

    SHA512

    10cef6104aeca8f7a135d4ffffb907b127f055477af4d98228c7385f0da15677357dfed13fc442ee173f85245224fc4b0ae100b832514c80802c5e5a054b70db

  • memory/280-56-0x0000000000000000-mapping.dmp

  • memory/568-73-0x0000000000000000-mapping.dmp

  • memory/820-77-0x0000000000000000-mapping.dmp

  • memory/820-78-0x000007FEFC381000-0x000007FEFC383000-memory.dmp

    Filesize

    8KB

  • memory/2020-54-0x0000000075EC1000-0x0000000075EC3000-memory.dmp

    Filesize

    8KB