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Resubmissions

01/03/2025, 18:58

250301-xmhhrayp15 10

01/03/2025, 18:55

250301-xkqrcaypx7 10

Analysis

  • max time kernel
    844s
  • max time network
    879s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    13/02/2025, 19:41

General

  • Target

    Archive.zip__ccacaxs2tbz2t6ob3e.exe

  • Size

    430KB

  • MD5

    a3cab1a43ff58b41f61f8ea32319386b

  • SHA1

    94689e1a9e1503f1082b23e6d5984d4587f3b9ec

  • SHA256

    005d3b2b78fa134092a43e53112e5c8518f14cf66e57e6a3cc723219120baba6

  • SHA512

    8f084a866c608833c3bf95b528927d9c05e8d4afcd8a52c3434d45c8ba8220c25d2f09e00aade708bbbc83b4edea60baf826750c529e8e9e05b1242c56d0198d

  • SSDEEP

    6144:vU9Q9tD5WuDQa4t3BMgLkzvCOnYxcEaSAOPou8BWinO8DR:8Q9tD5WyQlBBVAnYxRhr8DR

Malware Config

Signatures

  • Creates new service(s) 2 TTPs
  • Downloads MZ/PE file 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 9 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Program Files directory 64 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Archive.zip__ccacaxs2tbz2t6ob3e.exe
    "C:\Users\Admin\AppData\Local\Temp\Archive.zip__ccacaxs2tbz2t6ob3e.exe"
    1⤵
    • Downloads MZ/PE file
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:2088
    • C:\Users\Admin\AppData\Local\Temp\EE76.tmp.exe
      C:\Users\Admin\AppData\Local\Temp\EE76.tmp.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1268
    • C:\Users\Admin\AppData\Local\Temp\Temp\WCInstaller.exe
      C:\Users\Admin\AppData\Local\Temp\Temp\WCInstaller.exe --silent --partner=AE190201 --homepage=11 --search=7 --campaign=292
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2396
      • C:\Users\Admin\AppData\Local\Temp\7zSC591704D\WebCompanionInstaller.exe
        .\WebCompanionInstaller.exe --partner=AE190201 --campaign=292 --version=8.9.0.1201 --silent --partner=AE190201 --homepage=11 --search=7 --campaign=292
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1360
        • C:\Windows\SysWOW64\sc.exe
          "sc.exe" Create "WCAssistantService" binPath= "C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe" DisplayName= "WC Assistant" start= auto
          4⤵
          • Launches sc.exe
          • System Location Discovery: System Language Discovery
          PID:2640
        • C:\Windows\SysWOW64\sc.exe
          "sc.exe" failure WCAssistantService reset= 30 actions= restart/60000
          4⤵
          • Launches sc.exe
          • System Location Discovery: System Language Discovery
          PID:2056
        • C:\Windows\SysWOW64\sc.exe
          "sc.exe" description "WCAssistantService" "Ad-Aware Web Companion Internet security service"
          4⤵
          • Launches sc.exe
          • System Location Discovery: System Language Discovery
          PID:2672

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    1KB

    MD5

    a266bb7dcc38a562631361bbf61dd11b

    SHA1

    3b1efd3a66ea28b16697394703a72ca340a05bd5

    SHA256

    df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

    SHA512

    0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    82dea731418f8e8de38a24237ccee75b

    SHA1

    3dd293c1d598e666d8013c62e124639b2049c65d

    SHA256

    7859119560bba642eaeaf49d6c0b7c096f06dcb89c7e51a12397e48aae15e96c

    SHA512

    65263cc936dbd908d4ddf640ed5bd57f4eba53e040bd63b0d68c3877ce2a1ac571236c22293e7b8e144046606f6e038ad29a794b808e8b330e9f7d7101529ec0

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    242B

    MD5

    86e81aeed10772121e708e7c8a1e0507

    SHA1

    16aadb7d270abf0e19e60f08ac8cc7df298b3eeb

    SHA256

    70174465e811e2d7805abf0327f33a6c7f9407638a9b89727c64e785f31a6282

    SHA512

    8f9cfbdc75e1a147df38d0fda5b35c60ac044137f5ac1781c00edf19e1405a9fc35a3884dbad8254dcc05bace1ce8a32d35f9359d9537907260b48794c5ded49

  • C:\Users\Admin\AppData\Local\Temp\7zSC591704D\ICSharpCode.SharpZipLib.dll

    Filesize

    208KB

    MD5

    94893afa464938ab2169c8be39d971a7

    SHA1

    4926bef17768e8e0e05bbd10d2321e475ab491a7

    SHA256

    a02c4fae529a5b48a28236bf15cd54ed3f7a613210e40970f3cca82f0f68075e

    SHA512

    fa5214c5190e5fe6b347504e8c8817f52ad2549254e985d13d71798e820c6f2ba956585afa0240fb6806a3e74816c869bfac7d9b9564136825abc9a57b4e125f

  • C:\Users\Admin\AppData\Local\Temp\7zSC591704D\Newtonsoft.Json.dll

    Filesize

    428KB

    MD5

    3a4649717bdaf9e86dc93cfbcf8a4baa

    SHA1

    d1a1ecd90691fbd768ec9a7f2ebc89340b447e84

    SHA256

    f2d262cd645b7888b88ffa0e799e3e77c982bd2b09e68ad625b218d1435b6f6b

    SHA512

    c40b8f51120fde698fae9907c335e9c7f9d957e073da88c2ea5dbaaa7bf609a44bdedf104092f442f6172dbef3693ee5c1b0ec683b3125f13c95b9e48b10f181

  • C:\Users\Admin\AppData\Local\Temp\7zSC591704D\WebCompanionInstaller.exe.config

    Filesize

    1KB

    MD5

    025f5c132b47e5a5723d982bd652d5bc

    SHA1

    10460431043d2400166da8f464678d733f2e4f84

    SHA256

    6309de6d3c423af1dc0c47869793c37a108fa32da063d3f5bbb96927f93b4c25

    SHA512

    a72ad7f040acde97aac0f13f502bdfa395864497d1db9c012549377be9201252a59d5b8ce2e3bffb634e75efa6e594e6150ade60e2547760306cba8c568aa090

  • C:\Users\Admin\AppData\Local\Temp\Cab32E6.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar3356.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \Users\Admin\AppData\Local\Temp\7zSC591704D\WebCompanionInstaller.exe

    Filesize

    454KB

    MD5

    36a9001422c3e6532893e9a2f43658eb

    SHA1

    5189fab41f5d43634367bfca2729ad9b6f36ba20

    SHA256

    7f86c7e4a65835f9c12d2425d611902d23b15626960a19d2da03ec511b6a7b9c

    SHA512

    1d60a35e2f64e70b6489a13426f0f5952d3e93e79051fa37a4a5bc8a89614c5614a07de25715670c6618db27b7682c7b4589c356418716a3aae764568bf3371e

  • \Users\Admin\AppData\Local\Temp\EE76.tmp.exe

    Filesize

    149KB

    MD5

    060404f288040959694844afbd102966

    SHA1

    e0525e9ef6713fd7f269a669335ce3ddaab4b6a1

    SHA256

    40517e822f3442a2f389a50e905f40a6a2c4930077c865e3ea7b1929405f760a

    SHA512

    ddf8c53e1e1888084fa5422f297cc3ba9d97f7576c36f6b633ce67ca789127f7e259e9fb374fcbced66f883dadde0717d81ecce9776770bf07d8cf3b94b1a43f

  • \Users\Admin\AppData\Local\Temp\Temp\WCInstaller.exe

    Filesize

    551KB

    MD5

    f6cafe8321409eb7e885ef119cc161ce

    SHA1

    d6f1b4181c2e982fefe32808c6aff556f4e5d2ba

    SHA256

    6d2a2227681cf096a5783131a7a744da178fa103dc41dbdf4cbdd49b9909b60f

    SHA512

    2b9c02ebc8cddc478958ee7bdc3c9e3850940473737096b0940125f2f27acaa0bff405dbb19312a0966129de9351fd4d638b83ce153cf1769e4a6c6f26ba242e