Analysis

  • max time kernel
    32s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    08-02-2023 19:08

General

  • Target

    6c701b09803ad18e93024d320c6a324d.exe

  • Size

    29KB

  • MD5

    6c701b09803ad18e93024d320c6a324d

  • SHA1

    da096644b61ab6c6dc5544733794773a141c4b17

  • SHA256

    eb205a5851de3d6f7fbce5129dea8443bffcac19ae1436e88e8e0ea4bc5d1585

  • SHA512

    95dd75fd729aa684e14fa1e5568bb2ab3d3f730f0f0b34215ceb5a2f847dd202373358877450940ced7a074856fcfcb1242120d70b1cf38cd5082c2a94ce175c

  • SSDEEP

    768:N2vFNP/2hkbIz0RhijkXSiegJAY93sP7nwXr:eFN3YTiegS03sDw7

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

Mutex

?><MKdfdsgdgregrtgrthh<LKOIJUY&^T%RFDEXcfgvhbnjuimowefinuybt

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/VM7TRmVa

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • Async RAT payload 6 IoCs
  • Drops startup file 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 37 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6c701b09803ad18e93024d320c6a324d.exe
    "C:\Users\Admin\AppData\Local\Temp\6c701b09803ad18e93024d320c6a324d.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:944
    • C:\Users\Admin\AppData\Local\Temp\6c701b09803ad18e93024d320c6a324d.exe
      "C:\Users\Admin\AppData\Local\Temp\6c701b09803ad18e93024d320c6a324d.exe"
      2⤵
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      PID:1616

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

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

    61KB

    MD5

    fc4666cbca561e864e7fdf883a9e6661

    SHA1

    2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

    SHA256

    10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

    SHA512

    c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

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

    342B

    MD5

    b0daa38bc03db8bbfed6347c9b4fea6e

    SHA1

    46e5e5e2c2557fccb9fd6018ee63083b5386a9ec

    SHA256

    dd99a6b82d7138cb8d7c901291b3a51c14c388d4370d203ba921b3716577fff6

    SHA512

    bfbc667a02f1ea91947ae7243a3e377ab214c877bdde5de23ec9dcfc6fc1906b1d0e535770938e8a39544bca24ff4cdad365c8f45db3fd0a1604eb32a6e15938

  • memory/944-55-0x0000000075B61000-0x0000000075B63000-memory.dmp
    Filesize

    8KB

  • memory/944-56-0x0000000000620000-0x000000000063A000-memory.dmp
    Filesize

    104KB

  • memory/944-57-0x0000000000640000-0x0000000000648000-memory.dmp
    Filesize

    32KB

  • memory/944-58-0x00000000006C0000-0x00000000006C8000-memory.dmp
    Filesize

    32KB

  • memory/944-54-0x0000000000BD0000-0x0000000000BDC000-memory.dmp
    Filesize

    48KB

  • memory/1616-60-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1616-63-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1616-64-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1616-65-0x000000000040CC1E-mapping.dmp
  • memory/1616-67-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1616-69-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1616-62-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1616-59-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB