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Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/07/2023, 19:02

General

  • Target

    099f8cabb99fb8exe_JC.exe

  • Size

    484KB

  • MD5

    099f8cabb99fb81213e8e147b6789252

  • SHA1

    33cd310a8bf80a5b8d862d92562482744776a321

  • SHA256

    b181fb27e5874a8a38afb35208338c71f818d2dbfa312f4c9a44e253909fe1e0

  • SHA512

    edacfc3c4a358c08a9854c7b9b0c283a31054f44315bf6553380df8b5425ede51eb17e9463f56d7f796648448562db56cfef27ca0ffed39dcc86b57d8ae7dd69

  • SSDEEP

    12288:iu4lNAtYytvS5Aku1YLsxdkUoDj9JU01tuMsTp:iwhtvSLuFeUoPo0uM

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 43 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\099f8cabb99fb8exe_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\099f8cabb99fb8exe_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4060
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" http://skjp.zcjczj.cn/rxzgzb.html?s=154&v=155&c=185&a=175&m=&t=1615031814
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5064
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5064 CREDAT:17410 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2992
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x4f4 0x4e0
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4788

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\dwd4kki\imagestore.dat

    Filesize

    151B

    MD5

    59347f4b7e537251528f9817a2ca9797

    SHA1

    3cd1d32ab30df6b6862512bf16f2646a86d1e380

    SHA256

    98d09d7d4bec4c6777806f5540c8493a5fed145577622a7ed3d0804ee7728240

    SHA512

    b374bbbf3d1d1de28e10313318651b4b8c4a5f98d60d0c1c4007c1cd1fefe8e3a13f7aa07e893ce068a746e070a4c5b3b2399e2fddc51ac55dd34c9f16b2492d

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\HW3GGUK8\favicon[1].ico

    Filesize

    43B

    MD5

    ad4b0f606e0f8465bc4c4c170b37e1a3

    SHA1

    50b30fd5f87c85fe5cba2635cb83316ca71250d7

    SHA256

    cf4724b2f736ed1a0ae6bc28f1ead963d9cd2c1fd87b6ef32e7799fc1c5c8bda

    SHA512

    ebfe0c0df4bcc167d5cb6ebdd379f9083df62bef63a23818e1c6adf0f64b65467ea58b7cd4d03cf0a1b1a2b07fb7b969bf35f25f1f8538cc65cf3eebdf8a0910

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\IEREYVXM\suggestions[1].en-US

    Filesize

    17KB

    MD5

    5a34cb996293fde2cb7a4ac89587393a

    SHA1

    3c96c993500690d1a77873cd62bc639b3a10653f

    SHA256

    c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

    SHA512

    e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RY8A9UY0\5[1].js

    Filesize

    10B

    MD5

    74e1080b5e3125ca3a5abc7b340399aa

    SHA1

    b1e150e5809482e54c347d440f1824179c0d6d5f

    SHA256

    623017a5748ff1b4e9d0f227f5cd58869ae4959d1ca8fd204c9441cd11e2695b

    SHA512

    51985a333a6c225976863cf49eca3492f5b8a61f525d08d0bc69c25a7eecaad6fc3ec6f71420f06bb1c3fbfbd197eed6c5c4a99929bd0dbdee73ec2f88265f80

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RY8A9UY0\index[1].mp4

    Filesize

    122KB

    MD5

    89a91d4356327e574e99b7ae03daaa1f

    SHA1

    a60178a859f2507d8bdba1d3d064ee33b39e35cd

    SHA256

    28aaf6950681fda408d234b11f4a52d23ad437b4c12b7d00f65d14de61ca0c40

    SHA512

    b7246406254e05f3910c87004dc5779f22b7cce0b0682f062a0a928498601152159194c59cf5677a32b3e77180d33f7ba8af8a8515655c3b7bb6f6a5fd73ce99