Analysis

  • max time kernel
    143s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    23-07-2021 07:19

General

  • Target

    PO-HDQ-52443-VTXOK-4584934.exe

  • Size

    22KB

  • MD5

    d458750e9eb89bd8f97fd365773eba31

  • SHA1

    c8cae1c126bf03d79502698d9b90520be2bfcc36

  • SHA256

    6979809578bc2caf8da003a70023e86d66cd9aa7e4b8c4448b942931a908583f

  • SHA512

    64c33c69ad2653d24865a969ffff5cd351abf080e64d2189f95df211f7f657fa0b70454e45c97a6b557ba760e761ef4cd3426aca5c32e38f84d7c1c04cffc204

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

0.5.6A

C2

185.140.53.192:1515

grant123four5.ddns.net:1515

Mutex

mewetkcokhrlmr

Attributes
  • aes_key

    2YCtMmTskUhh8TBzJJD3qNNyS40EuN7P

  • anti_detection

    false

  • autorun

    false

  • bdos

    false

  • delay

  • host

    185.140.53.192,grant123four5.ddns.net

  • hwid

    5

  • install_file

  • install_folder

    %AppData%

  • mutex

    mewetkcokhrlmr

  • pastebin_config

    null

  • port

    1515

  • version

    0.5.6A

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
  • Async RAT payload 2 IoCs
  • Drops startup file 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 46 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO-HDQ-52443-VTXOK-4584934.exe
    "C:\Users\Admin\AppData\Local\Temp\PO-HDQ-52443-VTXOK-4584934.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:568
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c Copy "C:\Users\Admin\AppData\Local\Temp\PO-HDQ-52443-VTXOK-4584934.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO-HDQ-52443-VTXOK-4584934.exe"
      2⤵
      • Drops startup file
      PID:2784
    • C:\Users\Admin\AppData\Local\Temp\PO-HDQ-52443-VTXOK-4584934.exe
      "C:\Users\Admin\AppData\Local\Temp\PO-HDQ-52443-VTXOK-4584934.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3828

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\PO-HDQ-52443-VTXOK-4584934.exe.log
    MD5

    59c8376eaaeb2974da0807abc9acd83d

    SHA1

    805b226be7b7c8e393f93cd72cdd7ca7c1d61fc5

    SHA256

    e5dabd59477c0a28735ba8303d2bc3a20435534a2d97d6c3d1a9f68a217a5acc

    SHA512

    a5a3fe3ad86c98e04e7927827acbfd25ab1371f158e70750f0b4abee07119543ec9bfc041827289bd2f2c2fe1e9086403b483ca345aadb38338309b4800597aa

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO-HDQ-52443-VTXOK-4584934.exe
    MD5

    d458750e9eb89bd8f97fd365773eba31

    SHA1

    c8cae1c126bf03d79502698d9b90520be2bfcc36

    SHA256

    6979809578bc2caf8da003a70023e86d66cd9aa7e4b8c4448b942931a908583f

    SHA512

    64c33c69ad2653d24865a969ffff5cd351abf080e64d2189f95df211f7f657fa0b70454e45c97a6b557ba760e761ef4cd3426aca5c32e38f84d7c1c04cffc204

  • memory/568-123-0x0000000006510000-0x0000000006511000-memory.dmp
    Filesize

    4KB

  • memory/568-127-0x0000000006470000-0x000000000650C000-memory.dmp
    Filesize

    624KB

  • memory/568-119-0x0000000004F90000-0x000000000548E000-memory.dmp
    Filesize

    5.0MB

  • memory/568-120-0x0000000004F70000-0x0000000004F71000-memory.dmp
    Filesize

    4KB

  • memory/568-121-0x0000000005460000-0x0000000005478000-memory.dmp
    Filesize

    96KB

  • memory/568-122-0x0000000006230000-0x0000000006231000-memory.dmp
    Filesize

    4KB

  • memory/568-114-0x00000000005F0000-0x00000000005F1000-memory.dmp
    Filesize

    4KB

  • memory/568-116-0x0000000005490000-0x0000000005491000-memory.dmp
    Filesize

    4KB

  • memory/568-125-0x0000000006620000-0x0000000006621000-memory.dmp
    Filesize

    4KB

  • memory/568-117-0x0000000005030000-0x0000000005031000-memory.dmp
    Filesize

    4KB

  • memory/568-118-0x0000000004F90000-0x0000000004F91000-memory.dmp
    Filesize

    4KB

  • memory/2784-124-0x0000000000000000-mapping.dmp
  • memory/3828-128-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/3828-129-0x000000000040C3BE-mapping.dmp
  • memory/3828-133-0x0000000004E00000-0x0000000004E01000-memory.dmp
    Filesize

    4KB