Analysis

  • max time kernel
    406s
  • max time network
    409s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19-01-2023 17:13

General

  • Target

    SystemUtilities.exe

  • Size

    7.8MB

  • MD5

    133af41cfec522b7f583fcf77be37b1a

  • SHA1

    50fde70e193eeea8d15c13dfc62cdcb4cbc2bcd0

  • SHA256

    cc8aadd479d95364429457b2911f166f48c396bee21e5a77316101674b0ad8f1

  • SHA512

    714baab2cbc51069b1c3cd47531727916ab9405174021ae2dbe2eabebe96e6abc77fef8b4f4ceccac61eff70487f10e87208294f58f683964dee5830d504b64d

  • SSDEEP

    196608:JCXg6nbZkgUb74kWg/KrviA3YuC1HmkNCTcOPVftbnc:SgmZkr73SvQ7gkYT7Pttrc

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SystemUtilities.exe
    "C:\Users\Admin\AppData\Local\Temp\SystemUtilities.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Users\Admin\AppData\Local\Temp\is-4IISC.tmp\SystemUtilities.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-4IISC.tmp\SystemUtilities.tmp" /SL5="$6012A,7279327,811008,C:\Users\Admin\AppData\Local\Temp\SystemUtilities.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1900
      • C:\Program Files (x86)\Pegasun\SystemUtilities\SystemUtilities.exe
        "C:\Program Files (x86)\Pegasun\SystemUtilities\SystemUtilities.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:1800
        • C:\Program Files (x86)\Pegasun\SystemUtilities\bin\sHelper.exe
          "bin/sHelper.exe" -update -check
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:2008

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\Pegasun\SystemUtilities\SystemUtilities.exe
    Filesize

    961KB

    MD5

    0d821417868bea9b82fb8f32f61b785b

    SHA1

    d42316045e8dfbe19905aa8b3ca6e870307108a8

    SHA256

    a24a3c0e5495e52ac86caafbb78c0736ecd260e61e8f108cf16208f03084c9af

    SHA512

    9e2c3e878a2d7b929f40ff1600ee20bd8937278c7b85e792b506307308b081a6a97b350f414f9daf6f1550dbd2a045f0bc580022c1529925008c939e2fea3796

  • C:\Program Files (x86)\Pegasun\SystemUtilities\SystemUtilities.exe
    Filesize

    961KB

    MD5

    0d821417868bea9b82fb8f32f61b785b

    SHA1

    d42316045e8dfbe19905aa8b3ca6e870307108a8

    SHA256

    a24a3c0e5495e52ac86caafbb78c0736ecd260e61e8f108cf16208f03084c9af

    SHA512

    9e2c3e878a2d7b929f40ff1600ee20bd8937278c7b85e792b506307308b081a6a97b350f414f9daf6f1550dbd2a045f0bc580022c1529925008c939e2fea3796

  • C:\Program Files (x86)\Pegasun\SystemUtilities\SystemUtilities.exe.config
    Filesize

    332B

    MD5

    e61a71a9a53bb67492cbcfe554a7dd5a

    SHA1

    1731658bcb9cbfb6b5d61bed8cf6191154ec71f3

    SHA256

    f5b283c1d922ea650bca7e733d241a7fcadfb12e2cf9a2d33a0a0b2f40e14c0f

    SHA512

    a6528ece1328002c0bbe794411ae2ebc17659b77fd34bcc5faf14e25ecebe1deed04c83623721b61d25c9f18f1d16742e3b167fa2a3a20b47748d65681f4b8d5

  • C:\Program Files (x86)\Pegasun\SystemUtilities\bin\BackupManager.exe
    Filesize

    1.0MB

    MD5

    614f7db446d9f9136e79eca22f7af2f3

    SHA1

    afcc37281bb6aa811e147c72ce0e186131bdcbfe

    SHA256

    8098201433c0925a01bbb678a21cb51fd90dc794d96ed97a880337e71e4f18ab

    SHA512

    c3dd68275abc74859fd9a4e8f0a9de6ee7090d7661e040aab99016a7e1d6fa4174912f58cee11600dd884ff07b07df78762d8ffdf9817600ab32872814b76cdc

  • C:\Program Files (x86)\Pegasun\SystemUtilities\bin\PCCleaner.exe
    Filesize

    716KB

    MD5

    9c952342548e3390a94298ce1bf9016e

    SHA1

    4f09f927677d26f2e29cf64dfc60ebf97e4019cf

    SHA256

    c20dbe14b36ab49d4e44609bda6a3ef687e1ede0fdd5c36fbd9bf7d892e2e3fb

    SHA512

    4388ff1b56edbd3b94d6154a83fa020f0680938da807beb3510b81edd3a733793697b95cddfb42a3faca87cda55285d6a680358aa2255d39650f9cdbae847e61

  • C:\Program Files (x86)\Pegasun\SystemUtilities\bin\PegasunHelper.dll
    Filesize

    102KB

    MD5

    180215aa45b45000ef645322e960d9cc

    SHA1

    6ed5e3a0fd2784eb85e76c81450930503f699d30

    SHA256

    8f02d7ca06d1a3a1e13e90fdc2c5fa405eba9b384e7aec1617b71a3aeabaa215

    SHA512

    b35ce208cc00a35589fe2771c4dfa2feaf205c461c25469d9fa0233b9e9407406bf4886068ba13e949026475cb06f9e0c78ca2436aa75f3a8115b6d63f48d4e3

  • C:\Program Files (x86)\Pegasun\SystemUtilities\bin\PrivacyGuardian.exe
    Filesize

    250KB

    MD5

    ef27d1136ab31b8c9a865511f731cfb2

    SHA1

    88bf2884b2e758b83c33a3ae6ae5a0caee4d81f7

    SHA256

    2f5a607f4fa9cd9e548b5ba8598ddf42fbae0b9031b3d9d1af63ee33af50416e

    SHA512

    6e94303fd52f28418c24bf0c2dc7133a178069dceb52bc14adb5f897bef5988567b942ab9822c76f29c7efaf78ce441607e298e851951c9a97e916bfe6d50a11

  • C:\Program Files (x86)\Pegasun\SystemUtilities\bin\ServiceManager.exe
    Filesize

    488KB

    MD5

    2e5aeb9e78fa89d8542751f3fbd6b4ea

    SHA1

    b810e61b96393fbd3e332f18d9a4717a22af4d72

    SHA256

    ce3976f010c8981d9e016c8c9ad92fb2973ef290befbc4233f124ba5debbc6de

    SHA512

    a9ac65bc2b8e3c1a96aa073d0f5ea6371f4dd2dd33ea5dea1c932ae59811f9d95c054777a4b8a41dca03da95b084d81e94652eb43c19acda1c7e5d7b8a771d1b

  • C:\Program Files (x86)\Pegasun\SystemUtilities\bin\StartupManager.exe
    Filesize

    596KB

    MD5

    ed2a656dfd2c4a29d708082a4fb67a05

    SHA1

    2fad348c549668e930c9f60389bed774fd172d0e

    SHA256

    d349a8dd399a8940ba2a3ef1237e4779a61dbd74e6adfb444566f26f1977ee03

    SHA512

    96e921506e45dd39bf9e8d10c6fb9d56437671e6ef03c7a9c011f49d5f90bada713c8ee9a50f1c60445122561fd8bfcaddbbb9f08be591a13ce32bc2c3d5b506

  • C:\Program Files (x86)\Pegasun\SystemUtilities\bin\TuneUP.exe
    Filesize

    158KB

    MD5

    05e70c660c36924d93a68e794078b416

    SHA1

    20231dd5654ed962a40146a8dfeaa1c8e3ad9407

    SHA256

    a7e91b0372ca4e28773311fcfbee440aaa405f6f784036d712e739cefc575a53

    SHA512

    ad59f4911651a4119c860e1ec9020cdaea108362883e932c60726b5a89bad72dc85c8b17872f45e108d6e4f420cc64ae8c7994c941d6a3ff8fa17860872a7376

  • C:\Program Files (x86)\Pegasun\SystemUtilities\bin\sHelper.exe
    Filesize

    771KB

    MD5

    6d8aa359827a62c7aeafc114392680f5

    SHA1

    c7579e39f54b0d050eed389504dbc672f70af809

    SHA256

    3dac51c135d48579822474e0b8e297177a0bb5876028be03ee6ca8661320a609

    SHA512

    c61a8d5e9a4b4ed55ba774acaea32fee3a3583d3dd4d2b98f0f56a8cd8370be75299f76d7c9a74778bada7d87a9ef7bd9945753b28dd094738c566889c99669a

  • C:\Program Files (x86)\Pegasun\SystemUtilities\bin\sHelper.exe
    Filesize

    771KB

    MD5

    6d8aa359827a62c7aeafc114392680f5

    SHA1

    c7579e39f54b0d050eed389504dbc672f70af809

    SHA256

    3dac51c135d48579822474e0b8e297177a0bb5876028be03ee6ca8661320a609

    SHA512

    c61a8d5e9a4b4ed55ba774acaea32fee3a3583d3dd4d2b98f0f56a8cd8370be75299f76d7c9a74778bada7d87a9ef7bd9945753b28dd094738c566889c99669a

  • C:\Program Files (x86)\Pegasun\SystemUtilities\bin\sHelper.exe.config
    Filesize

    214B

    MD5

    4194fa999171a240c821cc4a7b765439

    SHA1

    d88eb7d47ac4ef13b1468baed9a74ff7bf912523

    SHA256

    4665799ac4d842fa2b2ab354144d6ebcc7529f429d972048d778a06a05d29583

    SHA512

    60785ed9a2fb2bdfec4e13ccbece50e7e81c408727084317b60a1be88ae2b2d6a3b0008da82f507a7a2bdac1a22584759c3fbacaf0bc602fd53f19a7043bb8b7

  • C:\Users\Admin\AppData\Local\Temp\is-4IISC.tmp\SystemUtilities.tmp
    Filesize

    3.0MB

    MD5

    09607ade6083062f0efa283023d306fd

    SHA1

    0fbca0d80403d6d8c8f71e9ee0c55e7dc0a0c3d7

    SHA256

    8cea37f87c4d0089ec0d829c944ba93598af3a3eb9430dd076b33abd99f0b6ac

    SHA512

    d4b8ba680db352652902ef5d9e7feaf11e8036e1b2e9bc16b7132d889b190eed2ee386bd228927dd201f4ac6569f83c918f23217e643b6d816ec2851236ece49

  • C:\Users\Admin\AppData\Local\Temp\is-4IISC.tmp\SystemUtilities.tmp
    Filesize

    3.0MB

    MD5

    09607ade6083062f0efa283023d306fd

    SHA1

    0fbca0d80403d6d8c8f71e9ee0c55e7dc0a0c3d7

    SHA256

    8cea37f87c4d0089ec0d829c944ba93598af3a3eb9430dd076b33abd99f0b6ac

    SHA512

    d4b8ba680db352652902ef5d9e7feaf11e8036e1b2e9bc16b7132d889b190eed2ee386bd228927dd201f4ac6569f83c918f23217e643b6d816ec2851236ece49

  • C:\Users\Admin\AppData\Roaming\Pegasun\SystemUtilities\Update-Data.ini
    Filesize

    242B

    MD5

    b82cee1bd03f016171aeb57bdd1518c9

    SHA1

    708f63927ba475dbc57e64e1ba11336f6f0e367f

    SHA256

    8782c75a19f7e26e50a4d86d81c68590273479967945803bd68b20460d937bcb

    SHA512

    079f6d625d7f9e1c5cc9dc424cd79a15149a52abc46f33be67452594bd90fd1e49c7c508b13adfce79194b4d0c61d808db820f655605c957cc06879edae66046

  • \Program Files (x86)\Pegasun\SystemUtilities\SystemUtilities.exe
    Filesize

    961KB

    MD5

    0d821417868bea9b82fb8f32f61b785b

    SHA1

    d42316045e8dfbe19905aa8b3ca6e870307108a8

    SHA256

    a24a3c0e5495e52ac86caafbb78c0736ecd260e61e8f108cf16208f03084c9af

    SHA512

    9e2c3e878a2d7b929f40ff1600ee20bd8937278c7b85e792b506307308b081a6a97b350f414f9daf6f1550dbd2a045f0bc580022c1529925008c939e2fea3796

  • \Program Files (x86)\Pegasun\SystemUtilities\SystemUtilities.exe
    Filesize

    961KB

    MD5

    0d821417868bea9b82fb8f32f61b785b

    SHA1

    d42316045e8dfbe19905aa8b3ca6e870307108a8

    SHA256

    a24a3c0e5495e52ac86caafbb78c0736ecd260e61e8f108cf16208f03084c9af

    SHA512

    9e2c3e878a2d7b929f40ff1600ee20bd8937278c7b85e792b506307308b081a6a97b350f414f9daf6f1550dbd2a045f0bc580022c1529925008c939e2fea3796

  • \Program Files (x86)\Pegasun\SystemUtilities\bin\PegasunHelper.dll
    Filesize

    102KB

    MD5

    180215aa45b45000ef645322e960d9cc

    SHA1

    6ed5e3a0fd2784eb85e76c81450930503f699d30

    SHA256

    8f02d7ca06d1a3a1e13e90fdc2c5fa405eba9b384e7aec1617b71a3aeabaa215

    SHA512

    b35ce208cc00a35589fe2771c4dfa2feaf205c461c25469d9fa0233b9e9407406bf4886068ba13e949026475cb06f9e0c78ca2436aa75f3a8115b6d63f48d4e3

  • \Program Files (x86)\Pegasun\SystemUtilities\bin\PegasunHelper.dll
    Filesize

    102KB

    MD5

    180215aa45b45000ef645322e960d9cc

    SHA1

    6ed5e3a0fd2784eb85e76c81450930503f699d30

    SHA256

    8f02d7ca06d1a3a1e13e90fdc2c5fa405eba9b384e7aec1617b71a3aeabaa215

    SHA512

    b35ce208cc00a35589fe2771c4dfa2feaf205c461c25469d9fa0233b9e9407406bf4886068ba13e949026475cb06f9e0c78ca2436aa75f3a8115b6d63f48d4e3

  • \Program Files (x86)\Pegasun\SystemUtilities\bin\sHelper.exe
    Filesize

    771KB

    MD5

    6d8aa359827a62c7aeafc114392680f5

    SHA1

    c7579e39f54b0d050eed389504dbc672f70af809

    SHA256

    3dac51c135d48579822474e0b8e297177a0bb5876028be03ee6ca8661320a609

    SHA512

    c61a8d5e9a4b4ed55ba774acaea32fee3a3583d3dd4d2b98f0f56a8cd8370be75299f76d7c9a74778bada7d87a9ef7bd9945753b28dd094738c566889c99669a

  • \Users\Admin\AppData\Local\Temp\is-4IISC.tmp\SystemUtilities.tmp
    Filesize

    3.0MB

    MD5

    09607ade6083062f0efa283023d306fd

    SHA1

    0fbca0d80403d6d8c8f71e9ee0c55e7dc0a0c3d7

    SHA256

    8cea37f87c4d0089ec0d829c944ba93598af3a3eb9430dd076b33abd99f0b6ac

    SHA512

    d4b8ba680db352652902ef5d9e7feaf11e8036e1b2e9bc16b7132d889b190eed2ee386bd228927dd201f4ac6569f83c918f23217e643b6d816ec2851236ece49

  • memory/1800-79-0x00000000052E0000-0x000000000538A000-memory.dmp
    Filesize

    680KB

  • memory/1800-78-0x00000000011C5000-0x00000000011D6000-memory.dmp
    Filesize

    68KB

  • memory/1800-76-0x0000000000970000-0x000000000098E000-memory.dmp
    Filesize

    120KB

  • memory/1800-109-0x00000000011C5000-0x00000000011D6000-memory.dmp
    Filesize

    68KB

  • memory/1800-67-0x0000000000000000-mapping.dmp
  • memory/1800-71-0x0000000001280000-0x0000000001374000-memory.dmp
    Filesize

    976KB

  • memory/1900-63-0x0000000074571000-0x0000000074573000-memory.dmp
    Filesize

    8KB

  • memory/1900-59-0x0000000000000000-mapping.dmp
  • memory/1988-58-0x0000000000400000-0x00000000004D3000-memory.dmp
    Filesize

    844KB

  • memory/1988-54-0x0000000075A91000-0x0000000075A93000-memory.dmp
    Filesize

    8KB

  • memory/1988-55-0x0000000000400000-0x00000000004D3000-memory.dmp
    Filesize

    844KB

  • memory/1988-72-0x0000000000400000-0x00000000004D3000-memory.dmp
    Filesize

    844KB

  • memory/1988-62-0x0000000000400000-0x00000000004D3000-memory.dmp
    Filesize

    844KB

  • memory/2008-89-0x000000001C320000-0x000000001C414000-memory.dmp
    Filesize

    976KB

  • memory/2008-92-0x000000001C320000-0x000000001C428000-memory.dmp
    Filesize

    1.0MB

  • memory/2008-95-0x000000001AAB0000-0x000000001AB66000-memory.dmp
    Filesize

    728KB

  • memory/2008-94-0x000000001B1B7000-0x000000001B1D6000-memory.dmp
    Filesize

    124KB

  • memory/2008-96-0x000000001AAB0000-0x000000001AB66000-memory.dmp
    Filesize

    728KB

  • memory/2008-98-0x000000001A930000-0x000000001A972000-memory.dmp
    Filesize

    264KB

  • memory/2008-91-0x000000001C320000-0x000000001C428000-memory.dmp
    Filesize

    1.0MB

  • memory/2008-99-0x000000001A930000-0x000000001A972000-memory.dmp
    Filesize

    264KB

  • memory/2008-101-0x000000001AAB0000-0x000000001AB2E000-memory.dmp
    Filesize

    504KB

  • memory/2008-88-0x00000000020B0000-0x000000000212C000-memory.dmp
    Filesize

    496KB

  • memory/2008-102-0x000000001AAB0000-0x000000001AB2E000-memory.dmp
    Filesize

    504KB

  • memory/2008-104-0x000000001AF70000-0x000000001B008000-memory.dmp
    Filesize

    608KB

  • memory/2008-87-0x000007FEFBB21000-0x000007FEFBB23000-memory.dmp
    Filesize

    8KB

  • memory/2008-105-0x000000001AF70000-0x000000001B008000-memory.dmp
    Filesize

    608KB

  • memory/2008-86-0x0000000000260000-0x000000000027E000-memory.dmp
    Filesize

    120KB

  • memory/2008-107-0x000000001AAB0000-0x000000001AADA000-memory.dmp
    Filesize

    168KB

  • memory/2008-108-0x000000001B1B7000-0x000000001B1D6000-memory.dmp
    Filesize

    124KB

  • memory/2008-85-0x0000000000BE0000-0x0000000000CA4000-memory.dmp
    Filesize

    784KB

  • memory/2008-81-0x0000000000000000-mapping.dmp