Analysis

  • max time kernel
    90s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2023, 00:04

General

  • Target

    avast_setup_offline.exe

  • Size

    698.1MB

  • MD5

    9a20a05ff03f91145e826b0a778422d2

  • SHA1

    8bbc9f4ff8a4e04afe41edb7287a9b2470864a42

  • SHA256

    08e7454e5ed4466e82e148134e179c3aaa1062ffb3448c1d7240dfa5c36c2371

  • SHA512

    8099169e868053f225742dbf855eafe76f0f81daf09726f166b561f79e01526f5438708dfac27c4168c3d3650869ffc260734ba90f6d2b5b11713f8274761b91

  • SSDEEP

    12582912:fZYcu+AIJEfIub4XU723Ko1cqB6rSfuzpk0gF+s9PkZnNmTxh4XpV:fucZA1HbF723Ko1vjuzT2n6Ab4r

Score
10/10

Malware Config

Signatures

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 6 IoCs
  • Checks for any installed AV software in registry 1 TTPs 28 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Checks processor information in registry 2 TTPs 9 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\avast_setup_offline.exe
    "C:\Users\Admin\AppData\Local\Temp\avast_setup_offline.exe"
    1⤵
    • Checks for any installed AV software in registry
    • Writes to the Master Boot Record (MBR)
    • Checks processor information in registry
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1680
    • C:\Windows\Temp\asw.088a5eec5a3a608c\instup.exe
      "C:\Windows\Temp\asw.088a5eec5a3a608c\instup.exe" /sfx /sfxstorage:C:\Windows\Temp\asw.088a5eec5a3a608c /edition:12 /prod:ais /guid:3f6e3ff6-5a54-4403-90ba-a9ecea7329c1 /ga_clientid:58103e65-2eb7-4103-9b38-fcd3d2893bbc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks for any installed AV software in registry
      • Writes to the Master Boot Record (MBR)
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3708
      • C:\Windows\Temp\asw.088a5eec5a3a608c\aswOfferTool.exe
        "C:\Windows\Temp\asw.088a5eec5a3a608c\aswOfferTool.exe" -checkGToolbar -elevated
        3⤵
        • Executes dropped EXE
        PID:4672
      • C:\Windows\Temp\asw.088a5eec5a3a608c\aswOfferTool.exe
        "C:\Windows\Temp\asw.088a5eec5a3a608c\aswOfferTool.exe" -checkChrome -elevated
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:4544
      • C:\Windows\Temp\asw.088a5eec5a3a608c\aswOfferTool.exe
        "C:\Windows\Temp\asw.088a5eec5a3a608c\aswOfferTool.exe" -checkChromeReactivation -elevated -bc=AVFC
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1452
        • C:\Users\Public\Documents\aswOfferTool.exe
          "C:\Users\Public\Documents\aswOfferTool.exe" -checkChromeReactivation -bc=AVFC
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1672
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon
    1⤵
    • Suspicious use of NtCreateUserProcessOtherParentProcess
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:308

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\Avast Software\Persistent Data\Avast\Logs\Setup.log

    Filesize

    1KB

    MD5

    da43f286a682b57bfa5c42a4592dd439

    SHA1

    2ba0085d50329e7d1d18bc85da93f8b0a091e5af

    SHA256

    ea596aea5d72c240be9ede7ea1ec96806daa51f461ab1d5fba3f377c5f2e7edd

    SHA512

    28d304bf96f1d942f365e7b184ffed01a4081745d0cdb6264617b8023b83da489865255abead7faf1935e9b77c30e59e3d4d802c972ef1af9b46d2356f0527d9

  • C:\Users\Public\Documents\aswOfferTool.exe

    Filesize

    1.5MB

    MD5

    04f85d7d55b83ba1e6ff2ff47c010447

    SHA1

    374c39f45a6f5a9ea2d90671a521bb55c5fadf87

    SHA256

    b7aed41a15ac9aea0d22faec15f14b7b15dd9c6af19ebaa0f33948141267e875

    SHA512

    b6e2accf39c95c1b28f5222c98b4811bc7d72e2c4ee681872d62d7c0389ed471a2a17a63677cf3f766dfbd0238b76ed6cd652058f5c0437ba5b9f046c8bc571d

  • C:\Users\Public\Documents\gcapi.dll

    Filesize

    867KB

    MD5

    3ead47f44293e18d66fb32259904197a

    SHA1

    e61e88bd81c05d4678aeb2d62c75dee35a25d16b

    SHA256

    e0d08b9da7e502ad8c75f8be52e9a08a6bcd0c5f98d360704173be33777e4905

    SHA512

    927a134bdaec1c7c13d11e4044b30f7c45bbb23d5caf1756c2beada6507a69df0a2e6252ec28a913861e4924d1c766704f1036d7fc39c6ddb22e5eb81f3007f0

  • C:\Windows\Temp\asw.088a5eec5a3a608c\HTMLayout.dll

    Filesize

    3.3MB

    MD5

    71ae4a2caf76d4413c43bd78c7a642b1

    SHA1

    cd1a0f3654911aa0208353327377238e553f391d

    SHA256

    3848c53d372858740b4c6f2d6bfba7b4f5c1a9d113fb500f5ea827bce798ca0b

    SHA512

    4764e27ac2ce6a6a0d4306f4cf140d6c537fe2ee93b065a590c2273bcfa02409db10db62cb6e840d722988840f4a5376f75fec5175e1511ad9d894a45f642aa8

  • C:\Windows\Temp\asw.088a5eec5a3a608c\HTMLayout.dll

    Filesize

    3.3MB

    MD5

    71ae4a2caf76d4413c43bd78c7a642b1

    SHA1

    cd1a0f3654911aa0208353327377238e553f391d

    SHA256

    3848c53d372858740b4c6f2d6bfba7b4f5c1a9d113fb500f5ea827bce798ca0b

    SHA512

    4764e27ac2ce6a6a0d4306f4cf140d6c537fe2ee93b065a590c2273bcfa02409db10db62cb6e840d722988840f4a5376f75fec5175e1511ad9d894a45f642aa8

  • C:\Windows\Temp\asw.088a5eec5a3a608c\HTMLayout.dll

    Filesize

    3.3MB

    MD5

    71ae4a2caf76d4413c43bd78c7a642b1

    SHA1

    cd1a0f3654911aa0208353327377238e553f391d

    SHA256

    3848c53d372858740b4c6f2d6bfba7b4f5c1a9d113fb500f5ea827bce798ca0b

    SHA512

    4764e27ac2ce6a6a0d4306f4cf140d6c537fe2ee93b065a590c2273bcfa02409db10db62cb6e840d722988840f4a5376f75fec5175e1511ad9d894a45f642aa8

  • C:\Windows\Temp\asw.088a5eec5a3a608c\Instup.dll

    Filesize

    19.1MB

    MD5

    5687b20720d7df8837c070f13b33fdf3

    SHA1

    d26d59e82904922594e301b2be0a6ed74e930047

    SHA256

    02d5be79de645a40bc81df9dd04ec07b1bbca0a0209ec3afb0e1360c0a464092

    SHA512

    0a9b961677421852745e5885f44bdb6fbceb7700328b609efaa858ddc6fb9f5aa0f7ffa322245d1a56076d151740f05e404dbddf21dcd598c6c627f3a976b421

  • C:\Windows\Temp\asw.088a5eec5a3a608c\Instup.dll

    Filesize

    19.1MB

    MD5

    5687b20720d7df8837c070f13b33fdf3

    SHA1

    d26d59e82904922594e301b2be0a6ed74e930047

    SHA256

    02d5be79de645a40bc81df9dd04ec07b1bbca0a0209ec3afb0e1360c0a464092

    SHA512

    0a9b961677421852745e5885f44bdb6fbceb7700328b609efaa858ddc6fb9f5aa0f7ffa322245d1a56076d151740f05e404dbddf21dcd598c6c627f3a976b421

  • C:\Windows\Temp\asw.088a5eec5a3a608c\Instup.exe

    Filesize

    3.1MB

    MD5

    7010b5c01c247efa439f6aba9f5c7ef5

    SHA1

    5ede7a7d9d8c6a854d4bb97c3e65ca0f32980967

    SHA256

    ba17eabc4e0bd2bb10e44a4a2822922285f1cb787abc1e58a5029a409b56a04c

    SHA512

    3844d99e6768448bde1e305b4b7ab635b3824e50f49d579590b0bd0c10683c46c37bdb76ba104e71398383720915be9a86f694c1e2e4c8ef8e2f1ec32ecf61a8

  • C:\Windows\Temp\asw.088a5eec5a3a608c\aswOfferTool.exe

    Filesize

    1.5MB

    MD5

    04f85d7d55b83ba1e6ff2ff47c010447

    SHA1

    374c39f45a6f5a9ea2d90671a521bb55c5fadf87

    SHA256

    b7aed41a15ac9aea0d22faec15f14b7b15dd9c6af19ebaa0f33948141267e875

    SHA512

    b6e2accf39c95c1b28f5222c98b4811bc7d72e2c4ee681872d62d7c0389ed471a2a17a63677cf3f766dfbd0238b76ed6cd652058f5c0437ba5b9f046c8bc571d

  • C:\Windows\Temp\asw.088a5eec5a3a608c\aswOfferTool.exe

    Filesize

    1.5MB

    MD5

    04f85d7d55b83ba1e6ff2ff47c010447

    SHA1

    374c39f45a6f5a9ea2d90671a521bb55c5fadf87

    SHA256

    b7aed41a15ac9aea0d22faec15f14b7b15dd9c6af19ebaa0f33948141267e875

    SHA512

    b6e2accf39c95c1b28f5222c98b4811bc7d72e2c4ee681872d62d7c0389ed471a2a17a63677cf3f766dfbd0238b76ed6cd652058f5c0437ba5b9f046c8bc571d

  • C:\Windows\Temp\asw.088a5eec5a3a608c\aswOfferTool.exe

    Filesize

    1.5MB

    MD5

    04f85d7d55b83ba1e6ff2ff47c010447

    SHA1

    374c39f45a6f5a9ea2d90671a521bb55c5fadf87

    SHA256

    b7aed41a15ac9aea0d22faec15f14b7b15dd9c6af19ebaa0f33948141267e875

    SHA512

    b6e2accf39c95c1b28f5222c98b4811bc7d72e2c4ee681872d62d7c0389ed471a2a17a63677cf3f766dfbd0238b76ed6cd652058f5c0437ba5b9f046c8bc571d

  • C:\Windows\Temp\asw.088a5eec5a3a608c\aswOfferTool.exe

    Filesize

    1.5MB

    MD5

    04f85d7d55b83ba1e6ff2ff47c010447

    SHA1

    374c39f45a6f5a9ea2d90671a521bb55c5fadf87

    SHA256

    b7aed41a15ac9aea0d22faec15f14b7b15dd9c6af19ebaa0f33948141267e875

    SHA512

    b6e2accf39c95c1b28f5222c98b4811bc7d72e2c4ee681872d62d7c0389ed471a2a17a63677cf3f766dfbd0238b76ed6cd652058f5c0437ba5b9f046c8bc571d

  • C:\Windows\Temp\asw.088a5eec5a3a608c\config.def

    Filesize

    26KB

    MD5

    6ff6d647e600e13cb86cfdf6a539dc2a

    SHA1

    bb8bf38631c43076ddfd32c1bd951d2cbaf6d010

    SHA256

    2f651dbe61f358553962af658b4f9a8f0f5bf245f7698523941fe4302f8ff1e8

    SHA512

    5a14a75713368f5284fc7ce5c01c3b024a72e30356098eb20999bc75b918f6f014732ba7cd52aa02634ecbe9c766305d84651ea0b631c07c15a635b18200b88d

  • C:\Windows\Temp\asw.088a5eec5a3a608c\gcapi.dll

    Filesize

    867KB

    MD5

    3ead47f44293e18d66fb32259904197a

    SHA1

    e61e88bd81c05d4678aeb2d62c75dee35a25d16b

    SHA256

    e0d08b9da7e502ad8c75f8be52e9a08a6bcd0c5f98d360704173be33777e4905

    SHA512

    927a134bdaec1c7c13d11e4044b30f7c45bbb23d5caf1756c2beada6507a69df0a2e6252ec28a913861e4924d1c766704f1036d7fc39c6ddb22e5eb81f3007f0

  • C:\Windows\Temp\asw.088a5eec5a3a608c\gcapi.dll

    Filesize

    867KB

    MD5

    3ead47f44293e18d66fb32259904197a

    SHA1

    e61e88bd81c05d4678aeb2d62c75dee35a25d16b

    SHA256

    e0d08b9da7e502ad8c75f8be52e9a08a6bcd0c5f98d360704173be33777e4905

    SHA512

    927a134bdaec1c7c13d11e4044b30f7c45bbb23d5caf1756c2beada6507a69df0a2e6252ec28a913861e4924d1c766704f1036d7fc39c6ddb22e5eb81f3007f0

  • C:\Windows\Temp\asw.088a5eec5a3a608c\part-jrog2-f51.vpx

    Filesize

    693B

    MD5

    1d400d8fab6fb9510c3e77472f3c2e9c

    SHA1

    bcf7a9c0696b51de55a95edb54fa8ea21588f33f

    SHA256

    6ecc1ef6215ae69f41e58a038ac758512d140cee8124feedc89383c1c44b0e11

    SHA512

    d524ff31c7db612eb8f3e447a380b58aee08c02b56212ce060315815a8ed52b11c39b6cf304bbe0f4ca6fe051d7f11bd6d2c51e24391744e2e097eb54fae526d

  • C:\Windows\Temp\asw.088a5eec5a3a608c\part-prg_ais-170117a1.vpx

    Filesize

    74KB

    MD5

    dcf004e9a6414d60dc6f28508f1fece4

    SHA1

    b3597fd85ba325324250291b822bbacfedf4c83f

    SHA256

    ca86d2aadd789a6507fc0bce556de484283cd6aa8c9f4aba6c77955fb7fb1e27

    SHA512

    9334f2d305ca87126e18f4fc33988b0f35514ad33a2e2f56809711a8fcb98371d2e7178926926acc174d00ae8ad73542373471cacc841a14caced17935d694af

  • C:\Windows\Temp\asw.088a5eec5a3a608c\part-setup_ais-170117a1.vpx

    Filesize

    4KB

    MD5

    8d357eb29f0bd46f0467b2a86bf1a420

    SHA1

    615feb0b16c52771716db03259162df69939f44d

    SHA256

    ba5c100a41693b4c149b869671ec9cf69dd4a060f9cd67a2bdda1f735647db3f

    SHA512

    0e94815a0bda2c9ba48651be70ed1befa2dbab95cfcde1fb33c84e69192250085bde38d4f330e98f657441fe6ba34ccbace57ebb51f039307208412465dcfcdc

  • C:\Windows\Temp\asw.088a5eec5a3a608c\part-vps_windows-23020602.vpx

    Filesize

    11KB

    MD5

    fe8bdc494231d7852aa23561f93f7428

    SHA1

    6f2329349e787645de5dbfa1ef3f963c71e70eba

    SHA256

    8856a2d910d3416abb0368eab221c8afcede5e35b6c3ddeeb91107849b2c07d5

    SHA512

    216d0a337d1ffb324d0c0ce72cb40d0edc54d58858468f260e799367ae9367dfae871ef401c60474fcbf8b07696c47f4a027326bc9c63f6c766a968f8b357844

  • C:\Windows\Temp\asw.088a5eec5a3a608c\prod-pgm.vpx

    Filesize

    572B

    MD5

    f7a67d80534fa08b6046fc98c11605f4

    SHA1

    25089b04321fdf333f4d4f0e5d114fe6b192ba15

    SHA256

    c6be5bc1f5ba21be1f01ebf8bd8efb7942f2ae57b0bd6b04c4da814f4677c88c

    SHA512

    bc7f5f2ec0f98b33d7a80951795e77026b4841bb2388ce54f8d7308d44880f2e38627f0fe9f5d950f32a4c71b1aafc980ad5f037ee258ab5204fcdf7bae8b802

  • C:\Windows\Temp\asw.088a5eec5a3a608c\prod-vps.vpx

    Filesize

    343B

    MD5

    caac0b94e3110f7dee1b06f57bd82c97

    SHA1

    35a1f0fdeb3a202b32a5c278defa3363c0c299c0

    SHA256

    98289d81c24e1697ef1e39758737c989d3a3497aa8eb241b7c776b1451b208b7

    SHA512

    2009a7d2be5b46e5f17a9414a2f5da206544d2fe6e5022f580509c5e6cf0acc5ffcb53b0a59ff95b3157577a34542e8a9cc174256a5c4152b64644dca9361935

  • C:\Windows\Temp\asw.088a5eec5a3a608c\servers.def

    Filesize

    29KB

    MD5

    37b34b427232c4a50016a8172716e9eb

    SHA1

    f44aca572ebc264d4398c1ebb01e7ff46f50b716

    SHA256

    7e1da0647af38594f942cb800219705867b731fe9b0243417c6cb61a20151757

    SHA512

    97ed09a9cc72ae7d1636bdc8251ee74bcc12c9385e62e816ef7a2ec882bf2a518075ecabe4c8714f4454b4aa23f16f670dc8ff009c52bda4ba6afebe2f2bb390

  • C:\Windows\Temp\asw.088a5eec5a3a608c\uat.dll

    Filesize

    26KB

    MD5

    af25e2083815dd908d9def2f75fc22f0

    SHA1

    c27f5d8566e8468adbc4bfcd4ff33ea820375357

    SHA256

    1b408c68012e7116e6be65c94aa7afdef0fc05852fe8741e79f0f4bd3f16cf22

    SHA512

    ef89deb565045797dd7fa8928267214b9ec200ed097220d18ad6461017f56fc45d633b7147b23340c65bff8613eb7672e732fbe28ba309a0bbfe21672427e45d

  • C:\Windows\Temp\asw.088a5eec5a3a608c\uat.vpx

    Filesize

    15KB

    MD5

    7961e923b0ccbb430658ea7cb3fd6d55

    SHA1

    9a4fd01cb23395759e96260c960683dc352fdd4b

    SHA256

    2b79386a6dd8cbefe18bfeb41215d1c71db52d52bc1fc438d7e1cc8edc3c25b4

    SHA512

    a62d062661e9dd9acf405a76468f3d30a5277d2b224ff62af7f9cc645914f1f7a80c0821207d886544881129d208a0db71f9a66d6b9a1aa32cb0eefe2e1d59d8