Analysis

  • max time kernel
    43s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-09-2022 22:06

General

  • Target

    peachjars - Linkvertise Downloader_kT33-41.exe

  • Size

    4.3MB

  • MD5

    bf244845092d9973e7a5a93635080267

  • SHA1

    3e5d24552e8b5881a794479faa9cd7e48f09d219

  • SHA256

    f71fbe54ec60dc2c19ca7a7d1ee06a2b134c216e32228ddb76217a64b452011c

  • SHA512

    fc81d20d8d24ca997c5cd1a3f171934a022aa318ecd978c7ede01a4e1cd3d3fa5384d3edc9c4dd3e6cb88cf82a6d66d3db7fd5b96a4af5aad83f2c393a3eea49

  • SSDEEP

    98304:xSie6hoXOWZ3lsuUxqxgWph7NLx137O5z:/oXOM1ughx7Sz

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\peachjars - Linkvertise Downloader_kT33-41.exe
    "C:\Users\Admin\AppData\Local\Temp\peachjars - Linkvertise Downloader_kT33-41.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1208
    • C:\Users\Admin\AppData\Local\Temp\is-0R8TM.tmp\peachjars - Linkvertise Downloader_kT33-41.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-0R8TM.tmp\peachjars - Linkvertise Downloader_kT33-41.tmp" /SL5="$60124,3525439,1235456,C:\Users\Admin\AppData\Local\Temp\peachjars - Linkvertise Downloader_kT33-41.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Modifies system certificate store
      PID:1732

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-0R8TM.tmp\peachjars - Linkvertise Downloader_kT33-41.tmp

    Filesize

    3.4MB

    MD5

    06e087e48e6d73efd7f353855aacb570

    SHA1

    679e2a92aa2c8a09fa3b615d56e48667ff8bb4f8

    SHA256

    9a0815e309db4d6feebf90ce5e91cc78892b2016dcbe07fd436afd655477320d

    SHA512

    05e4fe70aa104a4edbbdddf5e7396446d67123e2865c3a02c414a39c1ee6dc34aba6fa6f587435755a9a90ade1b7eccefe0e76244563689e0971a024049086c2

  • \Users\Admin\AppData\Local\Temp\is-0R8TM.tmp\peachjars - Linkvertise Downloader_kT33-41.tmp

    Filesize

    3.4MB

    MD5

    06e087e48e6d73efd7f353855aacb570

    SHA1

    679e2a92aa2c8a09fa3b615d56e48667ff8bb4f8

    SHA256

    9a0815e309db4d6feebf90ce5e91cc78892b2016dcbe07fd436afd655477320d

    SHA512

    05e4fe70aa104a4edbbdddf5e7396446d67123e2865c3a02c414a39c1ee6dc34aba6fa6f587435755a9a90ade1b7eccefe0e76244563689e0971a024049086c2

  • \Users\Admin\AppData\Local\Temp\is-BAU2A.tmp\AppUtils.dll

    Filesize

    1.8MB

    MD5

    43ce6d593abd5141a3139603f352ae05

    SHA1

    a97c75e23d275dddfde15ef5fdf3ff3253c0992c

    SHA256

    94e874f2702ea6be50e7d74864b66e7f763449c3db237803f3fad6adfd64ed3d

    SHA512

    bfc527529e5f73ba190dfc5bd043175c7e2ae963b665d6d39421c29e025020f1d593dc88b7bee33d86ef6b4f7a4c5e1a0339df4e99cab6849a275d1dda9f439f

  • \Users\Admin\AppData\Local\Temp\is-BAU2A.tmp\botva2.dll

    Filesize

    37KB

    MD5

    67965a5957a61867d661f05ae1f4773e

    SHA1

    f14c0a4f154dc685bb7c65b2d804a02a0fb2360d

    SHA256

    450b9b0ba25bf068afbc2b23d252585a19e282939bf38326384ea9112dfd0105

    SHA512

    c6942818b9026dc5db2d62999d32cf99fe7289f79a28b8345af17acf9d13b2229a5e917a48ff1f6d59715bdbcb00c1625e0302abcfe10ca7e0475762e0a3f41b

  • memory/1208-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

    Filesize

    8KB

  • memory/1208-55-0x0000000000400000-0x000000000053B000-memory.dmp

    Filesize

    1.2MB

  • memory/1208-62-0x0000000000400000-0x000000000053B000-memory.dmp

    Filesize

    1.2MB

  • memory/1732-64-0x0000000007720000-0x000000000772F000-memory.dmp

    Filesize

    60KB