Analysis

  • max time kernel
    24s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 21:16

General

  • Target

    a4f3039ef5463c550205f9a2e51a2f6f6fc093aef2d724397c0faf41bd3be106.exe

  • Size

    2.5MB

  • MD5

    82a73ff03e7dd1c459fe009bbfe18931

  • SHA1

    f1afd50424c8dfe7695062cdf07fd0c98ccae43b

  • SHA256

    a4f3039ef5463c550205f9a2e51a2f6f6fc093aef2d724397c0faf41bd3be106

  • SHA512

    6652a7b6044391963b249d5671de2bab577e268ca973eec0974937d4e8958aac3697df9de35274f76352188a081ed07bbad32f274615780d631e9bcbe2207ca9

  • SSDEEP

    49152:h1OsvPHVmVhYwiLtKkKyW4nFU0I+NP/f7I3lMOaYjdxvL0Hk:h1OGHVl71RnFXINxvp

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\a4f3039ef5463c550205f9a2e51a2f6f6fc093aef2d724397c0faf41bd3be106.exe
    "C:\Users\Admin\AppData\Local\Temp\a4f3039ef5463c550205f9a2e51a2f6f6fc093aef2d724397c0faf41bd3be106.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1744
    • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\WecZ1onH1q09Wgb.exe
      .\WecZ1onH1q09Wgb.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:1980
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Program Files (x86)\GoSave\3CaWN2st81yBmL.x64.dll"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:268
        • C:\Windows\system32\regsvr32.exe
          /s "C:\Program Files (x86)\GoSave\3CaWN2st81yBmL.x64.dll"
          4⤵
          • Loads dropped DLL
          • Installs/modifies Browser Helper Object
          PID:1496

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\3CaWN2st81yBmL.dat
    Filesize

    6KB

    MD5

    685b81bbc41bc27a8e87fd99a1c80373

    SHA1

    0e4e8aecb668b88da25b2437ebc0cef4716bc3d1

    SHA256

    9d6509f1df00157f2b2261eb17aae8e8a6db36dbb03138114682ca4cee293ebf

    SHA512

    c780f8a445ed6fcb25e027042991431d3c59dbc015fc60c2599c45050235697d49d84f2343eb81f72e332be8dc42f07570dd0e2f9eae91e15716262b9710f10c

  • C:\Program Files (x86)\GoSave\3CaWN2st81yBmL.x64.dll
    Filesize

    885KB

    MD5

    1a6b1013f17c1cdc6e98f82cd2568ea8

    SHA1

    c96e7bdba616743a5c05b08a342d89ed102376b0

    SHA256

    fa9dd2bd7850053b251c9b5f27f1ac43ad04abf85de61b1928b7c2d562d3290a

    SHA512

    10596f46c52ca3f50d6b3c7c894fff8b41f4fe920c6e5e0138cf7e95e85bfe1db8d5f1a63939832cd48cf29f571dd36de40ebb931fb9b14a106518ae4fc17ef9

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\3CaWN2st81yBmL.dll
    Filesize

    747KB

    MD5

    d949da968ea04ac3a7ddf0e300bb32be

    SHA1

    581d7d799c538b8e9e578cf57c420fb802d5a201

    SHA256

    5c4756451acf8622efa75639f9131ca8215c165e2ef21cc1ab7f8fee77db462b

    SHA512

    fd00e332af52646425f0d4032bb1bbfc85a44ff274bcf212f1264a29be546db4c1ceab7da32c70248a6baa2c55d2dff47dcb2ac441c783a1d9d1260c4685eb7e

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\3CaWN2st81yBmL.tlb
    Filesize

    3KB

    MD5

    5b503f1b4056c3d4fbf2d03f88e1adfe

    SHA1

    c8d659ea27bf0ca0bbfd46865d5796589bf9ef68

    SHA256

    231ef0fef77ab6c7fea053f64a9ce7f9e21646b868bfe391962262fc15c9bb6c

    SHA512

    229207201368d9674258389df19132070390f913aa5cc21b7567c515be5f5e0f07cdaa460d497ae355f27f00f7fc75538783d8890f6c9c0e861a7ecb8f520bdb

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\3CaWN2st81yBmL.x64.dll
    Filesize

    885KB

    MD5

    1a6b1013f17c1cdc6e98f82cd2568ea8

    SHA1

    c96e7bdba616743a5c05b08a342d89ed102376b0

    SHA256

    fa9dd2bd7850053b251c9b5f27f1ac43ad04abf85de61b1928b7c2d562d3290a

    SHA512

    10596f46c52ca3f50d6b3c7c894fff8b41f4fe920c6e5e0138cf7e95e85bfe1db8d5f1a63939832cd48cf29f571dd36de40ebb931fb9b14a106518ae4fc17ef9

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\WecZ1onH1q09Wgb.dat
    Filesize

    6KB

    MD5

    685b81bbc41bc27a8e87fd99a1c80373

    SHA1

    0e4e8aecb668b88da25b2437ebc0cef4716bc3d1

    SHA256

    9d6509f1df00157f2b2261eb17aae8e8a6db36dbb03138114682ca4cee293ebf

    SHA512

    c780f8a445ed6fcb25e027042991431d3c59dbc015fc60c2599c45050235697d49d84f2343eb81f72e332be8dc42f07570dd0e2f9eae91e15716262b9710f10c

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\WecZ1onH1q09Wgb.exe
    Filesize

    760KB

    MD5

    dcd148f6f3af3e3b0935c4fcc9f41811

    SHA1

    ee9bdbc7c568c7832d90b85921ab20030b6734cd

    SHA256

    f8689641199c6fc430121797965485d95abfbc430753e0e668817ab3b511a1e4

    SHA512

    34be8e60dc2decf8287a71516f359e80bb858ce52218dde1b01c821c9b95be38821f068b79b0da8dbe90865560e7ddab77b25e3971dda9be667fb3ae8f174886

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\WecZ1onH1q09Wgb.exe
    Filesize

    760KB

    MD5

    dcd148f6f3af3e3b0935c4fcc9f41811

    SHA1

    ee9bdbc7c568c7832d90b85921ab20030b6734cd

    SHA256

    f8689641199c6fc430121797965485d95abfbc430753e0e668817ab3b511a1e4

    SHA512

    34be8e60dc2decf8287a71516f359e80bb858ce52218dde1b01c821c9b95be38821f068b79b0da8dbe90865560e7ddab77b25e3971dda9be667fb3ae8f174886

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\[email protected]\bootstrap.js
    Filesize

    2KB

    MD5

    df13f711e20e9c80171846d4f2f7ae06

    SHA1

    56d29cda58427efe0e21d3880d39eb1b0ef60bee

    SHA256

    6c325461fba531a94cf8cbdcfc52755494973df0629ce0ee3fef734ab0838fc4

    SHA512

    6c51cee3bf13f164c4a5c9884cc6053cbf9db9701d34c07dc5761d2c047d3d1f7a361b32996a430107e9a4ce68a29149d747a84c76778a1e8780719a3d30470e

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\[email protected]\chrome.manifest
    Filesize

    35B

    MD5

    607e19963435adea5c3e38c0e3cb8cfa

    SHA1

    29b0819b7e1a157f0698a91ddb3930b0e7782bea

    SHA256

    82a64366a516538e793b4c0d23d1943e385ddf0a0e2110e8c55aa549499a1330

    SHA512

    205037a419e5cf9307038f90ff193153b8493815fc0fe3afb223784f3d6e3fdbc38dfa6187ee4141fe20d89937d245b3226b1da53fb38c714ef6d3e79da4efba

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\[email protected]\content\bg.js
    Filesize

    7KB

    MD5

    372b25fbc051db07e14adbe61d15a222

    SHA1

    d3ec4bd4a47a2e1b314986b05d8e75112bd8978e

    SHA256

    73540c8add997d1b66a78031dde1fadeea5de82a3dd997393257ee7fda4c8927

    SHA512

    f3799f8045aaa69995f5f9d7e09892835ae82677ded84e4195f17b07852981c49e4fd409158704d769b5d7fe7b5b0e2a3ab3437bb5d4c3d0f5cf938c43bbdb16

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\[email protected]\install.rdf
    Filesize

    597B

    MD5

    2fcb9dd5794cfe4df0c51de9a7075f88

    SHA1

    bc94e87f521056518d8bbfba90c3fffef2ee0a5f

    SHA256

    e81fd8370cad11827e6c927918a0ba25895534b2ef11ed973c50ab66f9e62b4b

    SHA512

    8b42276517af51674e2f9afb9d21b4c4ce6f70ba14ca9288ae6a0ad0174bb87346ed6b107ba8ad38564df8c13511606ae1b656d8253d514f319e6aa9ce267a5e

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\bcokhglemmkidhecgkbogaanlfdmmkgg\background.html
    Filesize

    142B

    MD5

    de0f771bf87bf4ec13ef9c706c4e90c1

    SHA1

    2cca8871bf7e80390ea1cd245b012e6f8d2b1054

    SHA256

    33f99ac8e07d3bc967cbd6e5e96377f2f77ab32cbad0302870b7c26040955495

    SHA512

    1ffa426db61ec4def2c647926044f9f0b166e8e241577f8f7887bb031aa0d624aad9f2fd564f37e2c9a84ea3ae18ac8e907e5b890286150b11685c04af8ea2bc

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\bcokhglemmkidhecgkbogaanlfdmmkgg\content.js
    Filesize

    144B

    MD5

    fca19198fd8af21016a8b1dec7980002

    SHA1

    fd01a47d14004e17a625efe66cc46a06c786cf40

    SHA256

    332b00395bc23d4cb0bf6506b0fbb7e17d690ed41f91cf9b5d1c481cb1d3e82a

    SHA512

    60f4286b3818f996fab50c09b191fbc82ed1c73b2b98d00b088b5afbbc0368c01819bd3868bd3c6bcb2cd083b719e29c28209317c7411213a25f923cfc1f0e47

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\bcokhglemmkidhecgkbogaanlfdmmkgg\lsdb.js
    Filesize

    531B

    MD5

    36d98318ab2b3b2585a30984db328afb

    SHA1

    f30b85fbe08e1d569ad49dfeafaf7cb2da6585a5

    SHA256

    ea2caf61817c6f7781ee049217e51c1083c8fc4f1e08e07792052dfdfa529ae7

    SHA512

    6f61ccda2eba18369409850b2c91c9817fc741755e29a1579646e3816e0deab80e34a5adb9ff865c773793d32ac338163a224dbf363b46420d6ea42a7bbb2b3a

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\bcokhglemmkidhecgkbogaanlfdmmkgg\manifest.json
    Filesize

    498B

    MD5

    640199ea4621e34510de919f6a54436f

    SHA1

    dc65dbfad02bd2688030bd56ca1cab85917a9937

    SHA256

    e4aa7c089e32d14ddf584e9de6d007ec16581cd30c248ff7284bc0eb7757d4af

    SHA512

    d64bc524d6df7c4c21a5ddfb0e6636317482ef4dc28006bd0a38d5e26c2db75626f216143026bf8acf3baa11d86c278e902c78afad4f806ca36f9e54bc75ff0a

  • C:\Users\Admin\AppData\Local\Temp\7zS250F.tmp\bcokhglemmkidhecgkbogaanlfdmmkgg\wwfDQ.js
    Filesize

    5KB

    MD5

    2c63c821e4d7187f979db20fe4908fba

    SHA1

    a5ad58f5e6049d1ef298d48a44c6c3021332f6a2

    SHA256

    fd59617036d03f5c7355fb9d5862a477c632c71c28d276f743bc189a8c3e6c1f

    SHA512

    0dad14e3ccad9ab09c2f23444be4560b0d70ac3daeee59b527895360d178cff05438396e208115e4e69e7f29e767a70371149192dc3691f7cb116b94cb7c67d8

  • \Program Files (x86)\GoSave\3CaWN2st81yBmL.dll
    Filesize

    747KB

    MD5

    d949da968ea04ac3a7ddf0e300bb32be

    SHA1

    581d7d799c538b8e9e578cf57c420fb802d5a201

    SHA256

    5c4756451acf8622efa75639f9131ca8215c165e2ef21cc1ab7f8fee77db462b

    SHA512

    fd00e332af52646425f0d4032bb1bbfc85a44ff274bcf212f1264a29be546db4c1ceab7da32c70248a6baa2c55d2dff47dcb2ac441c783a1d9d1260c4685eb7e

  • \Program Files (x86)\GoSave\3CaWN2st81yBmL.x64.dll
    Filesize

    885KB

    MD5

    1a6b1013f17c1cdc6e98f82cd2568ea8

    SHA1

    c96e7bdba616743a5c05b08a342d89ed102376b0

    SHA256

    fa9dd2bd7850053b251c9b5f27f1ac43ad04abf85de61b1928b7c2d562d3290a

    SHA512

    10596f46c52ca3f50d6b3c7c894fff8b41f4fe920c6e5e0138cf7e95e85bfe1db8d5f1a63939832cd48cf29f571dd36de40ebb931fb9b14a106518ae4fc17ef9

  • \Program Files (x86)\GoSave\3CaWN2st81yBmL.x64.dll
    Filesize

    885KB

    MD5

    1a6b1013f17c1cdc6e98f82cd2568ea8

    SHA1

    c96e7bdba616743a5c05b08a342d89ed102376b0

    SHA256

    fa9dd2bd7850053b251c9b5f27f1ac43ad04abf85de61b1928b7c2d562d3290a

    SHA512

    10596f46c52ca3f50d6b3c7c894fff8b41f4fe920c6e5e0138cf7e95e85bfe1db8d5f1a63939832cd48cf29f571dd36de40ebb931fb9b14a106518ae4fc17ef9

  • \Users\Admin\AppData\Local\Temp\7zS250F.tmp\WecZ1onH1q09Wgb.exe
    Filesize

    760KB

    MD5

    dcd148f6f3af3e3b0935c4fcc9f41811

    SHA1

    ee9bdbc7c568c7832d90b85921ab20030b6734cd

    SHA256

    f8689641199c6fc430121797965485d95abfbc430753e0e668817ab3b511a1e4

    SHA512

    34be8e60dc2decf8287a71516f359e80bb858ce52218dde1b01c821c9b95be38821f068b79b0da8dbe90865560e7ddab77b25e3971dda9be667fb3ae8f174886

  • memory/268-73-0x0000000000000000-mapping.dmp
  • memory/1496-77-0x0000000000000000-mapping.dmp
  • memory/1496-78-0x000007FEFBA91000-0x000007FEFBA93000-memory.dmp
    Filesize

    8KB

  • memory/1744-54-0x0000000075F61000-0x0000000075F63000-memory.dmp
    Filesize

    8KB

  • memory/1980-56-0x0000000000000000-mapping.dmp