Analysis

  • max time kernel
    32s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    06-02-2023 18:01

General

  • Target

    any.exe

  • Size

    4.0MB

  • MD5

    1a41528e75e53780eb8371376f59b165

  • SHA1

    fa87fafead7128fc4a52bc371f08800d68941544

  • SHA256

    9ed6b16646571c6278ffaf7e9f19a919bf7ec72c5e0a6616c2d559d8486e672c

  • SHA512

    323eb3ba49f255e0157aacc22eeedd806166732002b786e85f3c86e82e9063f3e3a1bdc6cad4c2f856ef69de79ce667fde0283f4ff6ba93488b1737b1f19f3df

  • SSDEEP

    98304:iDFWG1bqjvcLIsoh5GbmkNC3dv2tthJ2/Ev6l3:i7svcsImkN4chYECl

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\any.exe
    "C:\Users\Admin\AppData\Local\Temp\any.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:1808
    • C:\Users\Admin\AppData\Local\Temp\any.exe
      "C:\Users\Admin\AppData\Local\Temp\any.exe"
      2⤵
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      PID:1800

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

    d2f7189a5e26093390b1a6c3ffc4bdc3

    SHA1

    ddf3555a91c274067481c9d8a1820e71141756bc

    SHA256

    b4521b6ead6e81f9f7ef7c6bfe847bc9d1028bd9fa0032382764a7e5b539949c

    SHA512

    168039a3301887b3650c850bfd37dee429d11fecec29b664013112d3d0e05564d235f32d098a555f42af278e60ec208b2353b0a497c79b8db64222cf4404a912

  • memory/1800-64-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1800-59-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1800-60-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1800-62-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1800-63-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1800-65-0x000000000040CC1E-mapping.dmp
  • memory/1800-67-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1800-69-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1808-57-0x00000000004B0000-0x00000000004B8000-memory.dmp
    Filesize

    32KB

  • memory/1808-58-0x00000000007F0000-0x00000000007F8000-memory.dmp
    Filesize

    32KB

  • memory/1808-54-0x0000000000920000-0x0000000000D2C000-memory.dmp
    Filesize

    4.0MB

  • memory/1808-56-0x0000000000580000-0x000000000059A000-memory.dmp
    Filesize

    104KB

  • memory/1808-55-0x00000000759F1000-0x00000000759F3000-memory.dmp
    Filesize

    8KB