Analysis

  • max time kernel
    41s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 19:42

General

  • Target

    c286251d4989d153e08a3f0f396d9b1aa711b64776e8fac5a2bcf2d2a4d42240.exe

  • Size

    2.5MB

  • MD5

    be7835bec936b580fbd4f828a4cc2997

  • SHA1

    51aadf64f64e470cfc54f01e4dd924c3ffc238d2

  • SHA256

    c286251d4989d153e08a3f0f396d9b1aa711b64776e8fac5a2bcf2d2a4d42240

  • SHA512

    5dc210e242ee54ec9d4094605f9d9bff4fccc8de872bec606e23450692865a128f4c09e54e7d4afdd2aee5e3c94ba76ee2b260da6b6c61a056505ad2b91c5d7c

  • SSDEEP

    49152:h1OsnPHVmVhYwiLtKkKyW4nFU0I+NP/f7I3lMOaYjdxvL0Hl:h1OgHVl71RnFXINxvq

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\c286251d4989d153e08a3f0f396d9b1aa711b64776e8fac5a2bcf2d2a4d42240.exe
    "C:\Users\Admin\AppData\Local\Temp\c286251d4989d153e08a3f0f396d9b1aa711b64776e8fac5a2bcf2d2a4d42240.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1772
    • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\5yCalefcKJSyk1P.exe
      .\5yCalefcKJSyk1P.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:2032
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Program Files (x86)\GoSave\KB0OvcityZEiui.x64.dll"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1760
        • C:\Windows\system32\regsvr32.exe
          /s "C:\Program Files (x86)\GoSave\KB0OvcityZEiui.x64.dll"
          4⤵
          • Loads dropped DLL
          • Installs/modifies Browser Helper Object
          PID:856

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\KB0OvcityZEiui.dat
    Filesize

    7KB

    MD5

    0bacdf7a766a0985b2fb3c985b23c9db

    SHA1

    c868dde29cfe9d34c9d7d4c684ebcad05623bde6

    SHA256

    77068a7aa2e95b7efadae3203c94c9c419751010eebcac992fd8e34033210789

    SHA512

    fe9637c9f4fcdb62ccfb50dac6e88e20fbc595951276868aebce7789939f0270f813734eb9ca1af6d5d9585430af10d68fa6bb7e5d50ff9588b020c1a240c25a

  • C:\Program Files (x86)\GoSave\KB0OvcityZEiui.x64.dll
    Filesize

    885KB

    MD5

    1a6b1013f17c1cdc6e98f82cd2568ea8

    SHA1

    c96e7bdba616743a5c05b08a342d89ed102376b0

    SHA256

    fa9dd2bd7850053b251c9b5f27f1ac43ad04abf85de61b1928b7c2d562d3290a

    SHA512

    10596f46c52ca3f50d6b3c7c894fff8b41f4fe920c6e5e0138cf7e95e85bfe1db8d5f1a63939832cd48cf29f571dd36de40ebb931fb9b14a106518ae4fc17ef9

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\5yCalefcKJSyk1P.dat
    Filesize

    7KB

    MD5

    0bacdf7a766a0985b2fb3c985b23c9db

    SHA1

    c868dde29cfe9d34c9d7d4c684ebcad05623bde6

    SHA256

    77068a7aa2e95b7efadae3203c94c9c419751010eebcac992fd8e34033210789

    SHA512

    fe9637c9f4fcdb62ccfb50dac6e88e20fbc595951276868aebce7789939f0270f813734eb9ca1af6d5d9585430af10d68fa6bb7e5d50ff9588b020c1a240c25a

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\5yCalefcKJSyk1P.exe
    Filesize

    760KB

    MD5

    dcd148f6f3af3e3b0935c4fcc9f41811

    SHA1

    ee9bdbc7c568c7832d90b85921ab20030b6734cd

    SHA256

    f8689641199c6fc430121797965485d95abfbc430753e0e668817ab3b511a1e4

    SHA512

    34be8e60dc2decf8287a71516f359e80bb858ce52218dde1b01c821c9b95be38821f068b79b0da8dbe90865560e7ddab77b25e3971dda9be667fb3ae8f174886

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\5yCalefcKJSyk1P.exe
    Filesize

    760KB

    MD5

    dcd148f6f3af3e3b0935c4fcc9f41811

    SHA1

    ee9bdbc7c568c7832d90b85921ab20030b6734cd

    SHA256

    f8689641199c6fc430121797965485d95abfbc430753e0e668817ab3b511a1e4

    SHA512

    34be8e60dc2decf8287a71516f359e80bb858ce52218dde1b01c821c9b95be38821f068b79b0da8dbe90865560e7ddab77b25e3971dda9be667fb3ae8f174886

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\KB0OvcityZEiui.dll
    Filesize

    747KB

    MD5

    d949da968ea04ac3a7ddf0e300bb32be

    SHA1

    581d7d799c538b8e9e578cf57c420fb802d5a201

    SHA256

    5c4756451acf8622efa75639f9131ca8215c165e2ef21cc1ab7f8fee77db462b

    SHA512

    fd00e332af52646425f0d4032bb1bbfc85a44ff274bcf212f1264a29be546db4c1ceab7da32c70248a6baa2c55d2dff47dcb2ac441c783a1d9d1260c4685eb7e

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\KB0OvcityZEiui.tlb
    Filesize

    3KB

    MD5

    5b503f1b4056c3d4fbf2d03f88e1adfe

    SHA1

    c8d659ea27bf0ca0bbfd46865d5796589bf9ef68

    SHA256

    231ef0fef77ab6c7fea053f64a9ce7f9e21646b868bfe391962262fc15c9bb6c

    SHA512

    229207201368d9674258389df19132070390f913aa5cc21b7567c515be5f5e0f07cdaa460d497ae355f27f00f7fc75538783d8890f6c9c0e861a7ecb8f520bdb

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\KB0OvcityZEiui.x64.dll
    Filesize

    885KB

    MD5

    1a6b1013f17c1cdc6e98f82cd2568ea8

    SHA1

    c96e7bdba616743a5c05b08a342d89ed102376b0

    SHA256

    fa9dd2bd7850053b251c9b5f27f1ac43ad04abf85de61b1928b7c2d562d3290a

    SHA512

    10596f46c52ca3f50d6b3c7c894fff8b41f4fe920c6e5e0138cf7e95e85bfe1db8d5f1a63939832cd48cf29f571dd36de40ebb931fb9b14a106518ae4fc17ef9

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\mAZ@a.edu\bootstrap.js
    Filesize

    2KB

    MD5

    df13f711e20e9c80171846d4f2f7ae06

    SHA1

    56d29cda58427efe0e21d3880d39eb1b0ef60bee

    SHA256

    6c325461fba531a94cf8cbdcfc52755494973df0629ce0ee3fef734ab0838fc4

    SHA512

    6c51cee3bf13f164c4a5c9884cc6053cbf9db9701d34c07dc5761d2c047d3d1f7a361b32996a430107e9a4ce68a29149d747a84c76778a1e8780719a3d30470e

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\mAZ@a.edu\chrome.manifest
    Filesize

    35B

    MD5

    527ad3321828328f484edff395efc29b

    SHA1

    bad7c241428b4b1f1e745b50a0b4514dde58f7b4

    SHA256

    5718f32935506969b69dd610e396050ba3acd73d2210992a3b767488606e0b41

    SHA512

    6505a393b4ed40798cbdd142de00019ad8e3dcef5045b5c52e55aa002e71947d739e82954e1bffb4340701a92e9ccdfb7cef9654de93bc7a4b8bc527b52b3ea8

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\mAZ@a.edu\content\bg.js
    Filesize

    9KB

    MD5

    23d5aa34773499b18bd34341ac4f06f7

    SHA1

    255c63eac9b17e93d202fd4018aa4059c41cd1bd

    SHA256

    0ed2751cc615a444488b41abf7037ce08989e6220f1a6b3f409f8235ee075357

    SHA512

    1c6e113171e6031ba447106c2f7ef757d36d201c0586344b4855c945d38a93753320282613e76caab1c7df11efd372b4f8e2ca9ff25af8e83977cf88a9005a0e

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\mAZ@a.edu\install.rdf
    Filesize

    592B

    MD5

    2604fffedf24036d8cf88f57b1d799a9

    SHA1

    a4312107b3a1468f0958035e460d8a0dabb41d0d

    SHA256

    e2bbe9187b2cba273a04d73afd368f7d8f72800e7d2e1113a031e8c4cf253241

    SHA512

    4fd3f20de19e18ac2b2987d237c2cbd16ed1e8337340a3b081140b545df702e9182df01821b35b25cd44a189ff433fac0d28f493f172509d037ed62de818e42a

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\pmffcmjbkfkmjnnjjbahlhhkblkclhip\FHNKgQINCX.js
    Filesize

    6KB

    MD5

    22173308dc8e42ea40927a11e17dd1fc

    SHA1

    9581a9de258ae68ee435c927e318a3c2369cb997

    SHA256

    ff82f35d5b5d47c4c68aa772ad7d3cfa6f0193b7f2d067bfca8acbee7cdc8086

    SHA512

    92b9fa44e0e5e94398c493d42dab93b0b6d71bd275a0c3e42a2d42a8f4c51860f0c9bb8a0fe0f627d4ef557c19c716cb8949515b665554ca3f88e1b5a84cef9a

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\pmffcmjbkfkmjnnjjbahlhhkblkclhip\background.html
    Filesize

    147B

    MD5

    0215b38c6c35e48617c41e6d69dadeb5

    SHA1

    ee8cce08280999c250846d1e88fa692ab80d07f2

    SHA256

    a89bcedc7ebe0796a6af2d4261c4e89d116c2fc998204094aa5309ea1c9c40be

    SHA512

    a9b884d556916801606faba8b5a5d9ae9c6d1340735a8054a731d445bf38998d9136295e3d6526e0064fdfba31dff615d76038a2f414b422d537230233685be5

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\pmffcmjbkfkmjnnjjbahlhhkblkclhip\content.js
    Filesize

    144B

    MD5

    fca19198fd8af21016a8b1dec7980002

    SHA1

    fd01a47d14004e17a625efe66cc46a06c786cf40

    SHA256

    332b00395bc23d4cb0bf6506b0fbb7e17d690ed41f91cf9b5d1c481cb1d3e82a

    SHA512

    60f4286b3818f996fab50c09b191fbc82ed1c73b2b98d00b088b5afbbc0368c01819bd3868bd3c6bcb2cd083b719e29c28209317c7411213a25f923cfc1f0e47

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\pmffcmjbkfkmjnnjjbahlhhkblkclhip\lsdb.js
    Filesize

    531B

    MD5

    36d98318ab2b3b2585a30984db328afb

    SHA1

    f30b85fbe08e1d569ad49dfeafaf7cb2da6585a5

    SHA256

    ea2caf61817c6f7781ee049217e51c1083c8fc4f1e08e07792052dfdfa529ae7

    SHA512

    6f61ccda2eba18369409850b2c91c9817fc741755e29a1579646e3816e0deab80e34a5adb9ff865c773793d32ac338163a224dbf363b46420d6ea42a7bbb2b3a

  • C:\Users\Admin\AppData\Local\Temp\7zSBB64.tmp\pmffcmjbkfkmjnnjjbahlhhkblkclhip\manifest.json
    Filesize

    498B

    MD5

    640199ea4621e34510de919f6a54436f

    SHA1

    dc65dbfad02bd2688030bd56ca1cab85917a9937

    SHA256

    e4aa7c089e32d14ddf584e9de6d007ec16581cd30c248ff7284bc0eb7757d4af

    SHA512

    d64bc524d6df7c4c21a5ddfb0e6636317482ef4dc28006bd0a38d5e26c2db75626f216143026bf8acf3baa11d86c278e902c78afad4f806ca36f9e54bc75ff0a

  • \Program Files (x86)\GoSave\KB0OvcityZEiui.dll
    Filesize

    747KB

    MD5

    d949da968ea04ac3a7ddf0e300bb32be

    SHA1

    581d7d799c538b8e9e578cf57c420fb802d5a201

    SHA256

    5c4756451acf8622efa75639f9131ca8215c165e2ef21cc1ab7f8fee77db462b

    SHA512

    fd00e332af52646425f0d4032bb1bbfc85a44ff274bcf212f1264a29be546db4c1ceab7da32c70248a6baa2c55d2dff47dcb2ac441c783a1d9d1260c4685eb7e

  • \Program Files (x86)\GoSave\KB0OvcityZEiui.x64.dll
    Filesize

    885KB

    MD5

    1a6b1013f17c1cdc6e98f82cd2568ea8

    SHA1

    c96e7bdba616743a5c05b08a342d89ed102376b0

    SHA256

    fa9dd2bd7850053b251c9b5f27f1ac43ad04abf85de61b1928b7c2d562d3290a

    SHA512

    10596f46c52ca3f50d6b3c7c894fff8b41f4fe920c6e5e0138cf7e95e85bfe1db8d5f1a63939832cd48cf29f571dd36de40ebb931fb9b14a106518ae4fc17ef9

  • \Program Files (x86)\GoSave\KB0OvcityZEiui.x64.dll
    Filesize

    885KB

    MD5

    1a6b1013f17c1cdc6e98f82cd2568ea8

    SHA1

    c96e7bdba616743a5c05b08a342d89ed102376b0

    SHA256

    fa9dd2bd7850053b251c9b5f27f1ac43ad04abf85de61b1928b7c2d562d3290a

    SHA512

    10596f46c52ca3f50d6b3c7c894fff8b41f4fe920c6e5e0138cf7e95e85bfe1db8d5f1a63939832cd48cf29f571dd36de40ebb931fb9b14a106518ae4fc17ef9

  • \Users\Admin\AppData\Local\Temp\7zSBB64.tmp\5yCalefcKJSyk1P.exe
    Filesize

    760KB

    MD5

    dcd148f6f3af3e3b0935c4fcc9f41811

    SHA1

    ee9bdbc7c568c7832d90b85921ab20030b6734cd

    SHA256

    f8689641199c6fc430121797965485d95abfbc430753e0e668817ab3b511a1e4

    SHA512

    34be8e60dc2decf8287a71516f359e80bb858ce52218dde1b01c821c9b95be38821f068b79b0da8dbe90865560e7ddab77b25e3971dda9be667fb3ae8f174886

  • memory/856-77-0x0000000000000000-mapping.dmp
  • memory/856-78-0x000007FEFB8E1000-0x000007FEFB8E3000-memory.dmp
    Filesize

    8KB

  • memory/1760-73-0x0000000000000000-mapping.dmp
  • memory/1772-54-0x0000000075291000-0x0000000075293000-memory.dmp
    Filesize

    8KB

  • memory/2032-56-0x0000000000000000-mapping.dmp