Analysis

  • max time kernel
    249s
  • max time network
    337s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 19:22

General

  • Target

    c8b97599426311f10c28208131cc06721b92ccd4c99c03caf94dfa4014eed7bc.exe

  • Size

    2.5MB

  • MD5

    37559264e3828d0c141daaef399905bd

  • SHA1

    9b9d94bcc07f7fa3fb6c79a3e9f4334b13a3af31

  • SHA256

    c8b97599426311f10c28208131cc06721b92ccd4c99c03caf94dfa4014eed7bc

  • SHA512

    a55bc9432f30569c5a4d323085d38fd517f510aa8cfbd63bf505c2554c07f0f7f7a9e50e197562b2d2cb8870dfb9d7887d5115beb7df5c70e0575ccdc6fc192e

  • SSDEEP

    49152:h1OsfyDFXmj+BHBALGk7GNIgSDjjQkzYznJKOZaB/IsxM:h1Oe0JSqALGkqaDj7M

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 Program Files directory 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c8b97599426311f10c28208131cc06721b92ccd4c99c03caf94dfa4014eed7bc.exe
    "C:\Users\Admin\AppData\Local\Temp\c8b97599426311f10c28208131cc06721b92ccd4c99c03caf94dfa4014eed7bc.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:976
    • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\abxrS14Z4iyksaS.exe
      .\abxrS14Z4iyksaS.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops Chrome extension
      • Installs/modifies Browser Helper Object
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:780
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Program Files (x86)\GoSave\CoozCyrikPlTSC.x64.dll"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1384
        • C:\Windows\system32\regsvr32.exe
          /s "C:\Program Files (x86)\GoSave\CoozCyrikPlTSC.x64.dll"
          4⤵
          • Loads dropped DLL
          • Installs/modifies Browser Helper Object
          PID:752

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

1
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\CoozCyrikPlTSC.dat
    Filesize

    6KB

    MD5

    fedb89e0665ca7a23711fd680e615cb7

    SHA1

    fa889ee212f361c63529d6005812bf4bafacbf44

    SHA256

    4dae59240f6d5f748cd29a24e4bb1bfeec78c8cbab82ceba5fa84d3c0c482f6f

    SHA512

    bbe224239fcbfbcee0659fa7b7335e8e45a386318f7327cfb3921e30c7f97b9b8076cdd5c07d9a706a3661b7dcd7592850cd46c876ace534305b646228c43435

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

    886KB

    MD5

    eadda36c5638e64e055ca60e50caf427

    SHA1

    822ae0491b2897790cb3e10920836e2ea40696e1

    SHA256

    419d87b1e4cfdb1e6fc4bbaa8c05bdeec5bb2c1afe87544fe78aa875013a9cff

    SHA512

    60fc2b64a30a972adfa94cfdd308887c590a8c15bc90b0a55692a860c6ca15cfe3fc7237102d7860bfd65764d479d37e62f0b09f94b4e3c76463821c6148cbb2

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\[email protected]\bootstrap.js
    Filesize

    2KB

    MD5

    df13f711e20e9c80171846d4f2f7ae06

    SHA1

    56d29cda58427efe0e21d3880d39eb1b0ef60bee

    SHA256

    6c325461fba531a94cf8cbdcfc52755494973df0629ce0ee3fef734ab0838fc4

    SHA512

    6c51cee3bf13f164c4a5c9884cc6053cbf9db9701d34c07dc5761d2c047d3d1f7a361b32996a430107e9a4ce68a29149d747a84c76778a1e8780719a3d30470e

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\[email protected]\chrome.manifest
    Filesize

    35B

    MD5

    b9a791673785f4e9bc7d86ba36ff7266

    SHA1

    8a164cae32ae89ef15c7b92de49ae0d30948adc9

    SHA256

    56cb204c73c311f43e1b0535ebb48e26d235cdf67f7ea2f5d033dc408a1d51e3

    SHA512

    ce10b717441b8ecfcfc25711acc48bab776bddf2c0d4951039ffe436e83e558add2d83fefabae30289f5df7e766cf63f15988cb6e7f28adf455133591b879b50

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\[email protected]\content\bg.js
    Filesize

    7KB

    MD5

    9eb148434f79fb7d0a39035d274bd224

    SHA1

    b5009e6f08afa66df9e760f9774bf7bb441f671e

    SHA256

    ee9f8c1a265ed97de440882fc9b40a138da387b152c876058cd72e7e0121dea8

    SHA512

    7dc2a211d0d16e565f1ff0a7e6663b0eef7d65a60bb859d25bc5420d4cbd6b5c58e667beb6b3a7fb6e4ccf1e0c0c0a65dcd34768bb29508318a7f246998111a5

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\[email protected]\install.rdf
    Filesize

    591B

    MD5

    9a83725318f5d6fcd06f11262233a7c9

    SHA1

    3daf6909f4314075df6543224bf245a0f392a18c

    SHA256

    27b8a6f3089b2ec694f30e1cb643b764984668ed98a3df4ce055172c13a629a0

    SHA512

    4181cb596a7884a6dd2ac03bc0c6bd8431a162ce3b82952f3b6dd7ff411553ac1f000935872b0059d548427560201c23725853a692849db63c42e32b5a2c9d0d

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\CoozCyrikPlTSC.dll
    Filesize

    749KB

    MD5

    05636af3aa9a36a4a1df7560231b520c

    SHA1

    94b0fb3246f9d757a44cc80401bab6720f7f5fb3

    SHA256

    2c8c222a335b7872c49a0a0185d5cbf29481c8364e1d5d822afa532cfa77ee10

    SHA512

    e8d8e47faf9d357cfae6c8e515426787111b2c4602390d7cc1eda04485a436ca7013c89061887fe45da2566c5dd2e1e04599af270062379b37444985d1f1d07c

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\CoozCyrikPlTSC.tlb
    Filesize

    3KB

    MD5

    aafd1d71b2778cd2369e1a2d7e7166d1

    SHA1

    f6505a389d7e2be9d3ccc3ea4e052abc338fcbb5

    SHA256

    b3772533d10176e84e6b87269bb0ab4dd783f34baa17eb2a7ad42078a2203e1c

    SHA512

    df4ef691872946fb4bfebc6ce3699f56fc4c5846c1a8de6b16296717ef4f41b8e5b32c43e8dd56fe46731a91da93684889e78d42a92fa37eb38622d1d71353a0

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\CoozCyrikPlTSC.x64.dll
    Filesize

    886KB

    MD5

    eadda36c5638e64e055ca60e50caf427

    SHA1

    822ae0491b2897790cb3e10920836e2ea40696e1

    SHA256

    419d87b1e4cfdb1e6fc4bbaa8c05bdeec5bb2c1afe87544fe78aa875013a9cff

    SHA512

    60fc2b64a30a972adfa94cfdd308887c590a8c15bc90b0a55692a860c6ca15cfe3fc7237102d7860bfd65764d479d37e62f0b09f94b4e3c76463821c6148cbb2

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\abxrS14Z4iyksaS.dat
    Filesize

    6KB

    MD5

    fedb89e0665ca7a23711fd680e615cb7

    SHA1

    fa889ee212f361c63529d6005812bf4bafacbf44

    SHA256

    4dae59240f6d5f748cd29a24e4bb1bfeec78c8cbab82ceba5fa84d3c0c482f6f

    SHA512

    bbe224239fcbfbcee0659fa7b7335e8e45a386318f7327cfb3921e30c7f97b9b8076cdd5c07d9a706a3661b7dcd7592850cd46c876ace534305b646228c43435

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\abxrS14Z4iyksaS.exe
    Filesize

    769KB

    MD5

    926d03f373e2f0d6ecf16e30c941ad60

    SHA1

    b5caf80c04b62525774f66262ce6b1ebeaa19315

    SHA256

    b14f3bb56383bbb14a4341fd60674a9fc62505a69413ec25b9ff8dade8c63847

    SHA512

    6aa4ade944470239569b56f7556df747c92218051a540e4d86006510cdee374718c7facc0f6089b5027b08aa728fc98538799d65343aef608ed91a704105a4a0

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\abxrS14Z4iyksaS.exe
    Filesize

    769KB

    MD5

    926d03f373e2f0d6ecf16e30c941ad60

    SHA1

    b5caf80c04b62525774f66262ce6b1ebeaa19315

    SHA256

    b14f3bb56383bbb14a4341fd60674a9fc62505a69413ec25b9ff8dade8c63847

    SHA512

    6aa4ade944470239569b56f7556df747c92218051a540e4d86006510cdee374718c7facc0f6089b5027b08aa728fc98538799d65343aef608ed91a704105a4a0

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\nckjeagmmnnjehcjienjjkpoahnoaapk\RCzSi.js
    Filesize

    5KB

    MD5

    3d37b11b989aaf33e0f6c84cc6e16d04

    SHA1

    67015e6fc33fd5dea0765e4f67beb64fea11904f

    SHA256

    1b7cdf4fefd5535baace835d2c0682214b4c2bf9bd0500a552c3dab1db6164b4

    SHA512

    b95cb426be96a565fd614b5cb36249a380c7b1cd368a74ee32c975ba509a70b25c07eeb2d2f1d0ba01be657693aef1b958ab34e902fffdfe95e3a96aa757b9bb

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\nckjeagmmnnjehcjienjjkpoahnoaapk\background.html
    Filesize

    142B

    MD5

    7242a3664fef2162be06a68a5d1e0595

    SHA1

    97c8c08e7da688dadb0de2cbb76ace88de267371

    SHA256

    06e9250d660c67632d9eeee2c69558ecbbc4a60396dce8cab4c7ef250ea8febe

    SHA512

    34e771ff6e3272be3ad81b04ba994c0362c686f507620f9d3468c6bf4393cd47dd11eb508ea7cb3416f5dc2f8fa84aff025cabe28c57292f8416dd198902fd32

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\nckjeagmmnnjehcjienjjkpoahnoaapk\content.js
    Filesize

    144B

    MD5

    fca19198fd8af21016a8b1dec7980002

    SHA1

    fd01a47d14004e17a625efe66cc46a06c786cf40

    SHA256

    332b00395bc23d4cb0bf6506b0fbb7e17d690ed41f91cf9b5d1c481cb1d3e82a

    SHA512

    60f4286b3818f996fab50c09b191fbc82ed1c73b2b98d00b088b5afbbc0368c01819bd3868bd3c6bcb2cd083b719e29c28209317c7411213a25f923cfc1f0e47

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\nckjeagmmnnjehcjienjjkpoahnoaapk\lsdb.js
    Filesize

    531B

    MD5

    36d98318ab2b3b2585a30984db328afb

    SHA1

    f30b85fbe08e1d569ad49dfeafaf7cb2da6585a5

    SHA256

    ea2caf61817c6f7781ee049217e51c1083c8fc4f1e08e07792052dfdfa529ae7

    SHA512

    6f61ccda2eba18369409850b2c91c9817fc741755e29a1579646e3816e0deab80e34a5adb9ff865c773793d32ac338163a224dbf363b46420d6ea42a7bbb2b3a

  • C:\Users\Admin\AppData\Local\Temp\7zS2B55.tmp\nckjeagmmnnjehcjienjjkpoahnoaapk\manifest.json
    Filesize

    498B

    MD5

    640199ea4621e34510de919f6a54436f

    SHA1

    dc65dbfad02bd2688030bd56ca1cab85917a9937

    SHA256

    e4aa7c089e32d14ddf584e9de6d007ec16581cd30c248ff7284bc0eb7757d4af

    SHA512

    d64bc524d6df7c4c21a5ddfb0e6636317482ef4dc28006bd0a38d5e26c2db75626f216143026bf8acf3baa11d86c278e902c78afad4f806ca36f9e54bc75ff0a

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

    749KB

    MD5

    05636af3aa9a36a4a1df7560231b520c

    SHA1

    94b0fb3246f9d757a44cc80401bab6720f7f5fb3

    SHA256

    2c8c222a335b7872c49a0a0185d5cbf29481c8364e1d5d822afa532cfa77ee10

    SHA512

    e8d8e47faf9d357cfae6c8e515426787111b2c4602390d7cc1eda04485a436ca7013c89061887fe45da2566c5dd2e1e04599af270062379b37444985d1f1d07c

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

    886KB

    MD5

    eadda36c5638e64e055ca60e50caf427

    SHA1

    822ae0491b2897790cb3e10920836e2ea40696e1

    SHA256

    419d87b1e4cfdb1e6fc4bbaa8c05bdeec5bb2c1afe87544fe78aa875013a9cff

    SHA512

    60fc2b64a30a972adfa94cfdd308887c590a8c15bc90b0a55692a860c6ca15cfe3fc7237102d7860bfd65764d479d37e62f0b09f94b4e3c76463821c6148cbb2

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

    886KB

    MD5

    eadda36c5638e64e055ca60e50caf427

    SHA1

    822ae0491b2897790cb3e10920836e2ea40696e1

    SHA256

    419d87b1e4cfdb1e6fc4bbaa8c05bdeec5bb2c1afe87544fe78aa875013a9cff

    SHA512

    60fc2b64a30a972adfa94cfdd308887c590a8c15bc90b0a55692a860c6ca15cfe3fc7237102d7860bfd65764d479d37e62f0b09f94b4e3c76463821c6148cbb2

  • \Users\Admin\AppData\Local\Temp\7zS2B55.tmp\abxrS14Z4iyksaS.exe
    Filesize

    769KB

    MD5

    926d03f373e2f0d6ecf16e30c941ad60

    SHA1

    b5caf80c04b62525774f66262ce6b1ebeaa19315

    SHA256

    b14f3bb56383bbb14a4341fd60674a9fc62505a69413ec25b9ff8dade8c63847

    SHA512

    6aa4ade944470239569b56f7556df747c92218051a540e4d86006510cdee374718c7facc0f6089b5027b08aa728fc98538799d65343aef608ed91a704105a4a0

  • memory/752-77-0x0000000000000000-mapping.dmp
  • memory/752-78-0x000007FEFC311000-0x000007FEFC313000-memory.dmp
    Filesize

    8KB

  • memory/780-56-0x0000000000000000-mapping.dmp
  • memory/976-54-0x0000000076201000-0x0000000076203000-memory.dmp
    Filesize

    8KB

  • memory/1384-73-0x0000000000000000-mapping.dmp