Analysis

  • max time kernel
    603s
  • max time network
    605s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-08-2024 22:12

General

  • Target

    [Leakcloud.fun] Link Skipper.exe

  • Size

    523.0MB

  • MD5

    b928c8e9fbdea0d3d904df7a09955640

  • SHA1

    3caec7a61590a0287d2c350da8439cf977f3ab7a

  • SHA256

    1f1407140a7a550335d170429646438cef0d37ec51a6378ac08c132e9e7d8420

  • SHA512

    7627815855b32eec15e358246f2764b517790afb7bdac6ada17ec3184c96397248f1ce1150d3efe54f779f0e290bb2d03b6124a6c6df2dd2c7cfadc0138a627a

  • SSDEEP

    49152:XJED040Mm05vldXLyY4huQNuZo+rGlYnqRK7xPNH6Yjs1hm0zydRtmSH07JS44iE:XCX5soNvqRK7dqSdzmy4JMdaP67

Malware Config

Extracted

Family

asyncrat

Version

true

Botnet

Link Skipper B

Mutex

RRAT_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_file

    powershell Add-MpPreference -ExclusionPath C:\

  • install_folder

    Explorer.exe

  • pastebin_config

    http://pastebin.com/raw/KKpnJShN

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Async RAT payload 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 61 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 13 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\[Leakcloud.fun] Link Skipper.exe
    "C:\Users\Admin\AppData\Local\Temp\[Leakcloud.fun] Link Skipper.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3964
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C powershell Add-MpPreference -ExclusionPath C:\
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1880
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell Add-MpPreference -ExclusionPath C:\
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4792
    • C:\Users\Admin\AppData\Local\Explorer\a.exe
      "C:\Users\Admin\AppData\Local\Explorer\a.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1120
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c powershell Add-MpPreference -ExclusionPath C:\
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1340
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell Add-MpPreference -ExclusionPath C:\
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1332
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows\WindowsUpdater" /tr '"C:\Users\Admin\AppData\Roaming\Explorer.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4052
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "Windows\WindowsUpdater" /tr '"C:\Users\Admin\AppData\Roaming\Explorer.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:4844
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp27F5.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1616
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:1940
        • C:\Users\Admin\AppData\Roaming\Explorer.exe
          "C:\Users\Admin\AppData\Roaming\Explorer.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2616
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /Cschtasks /create /f /sc ONIDLE /i 1 /rl highest /tn "Windows\WinUpdate" /tr "C:\Users\Admin\AppData\Local\explore.exe"
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:4360
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /f /sc ONIDLE /i 1 /rl highest /tn "Windows\WinUpdate" /tr "C:\Users\Admin\AppData\Local\explore.exe"
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:968
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /Cschtasks /create /f /sc ONIDLE /i 1 /rl highest /tn "Windows\WinUpdaters" /tr "cmd.exe /C powershell Add-MpPreference -ExclusionPath C:\"
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2084
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /f /sc ONIDLE /i 1 /rl highest /tn "Windows\WinUpdaters" /tr "cmd.exe /C powershell Add-MpPreference -ExclusionPath C:\"
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:3148
    • C:\Users\Admin\AppData\Local\Explorer\a.exe
      "C:\Users\Admin\AppData\Local\Explorer\a.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1072

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Explorer\a.exe

    Filesize

    66KB

    MD5

    cbc180230a3a7ceb6b8fbc0db93ec087

    SHA1

    52581710e27859a616da384a90dfeea2a522c77a

    SHA256

    91ed933e574ad7c5278eb73a97f407ab419e5c6aa051b66cc7309d7154b2bd3d

    SHA512

    ce897082beb704eee8ebbd19c4ee557762bca1be170a63f9e60b991c65dfeed1d91d2187c3f6f833a67ee5e3ab6ea514ba946509b2ebe95f9e1cf9be8d22ab1e

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\a.exe.log

    Filesize

    425B

    MD5

    4eaca4566b22b01cd3bc115b9b0b2196

    SHA1

    e743e0792c19f71740416e7b3c061d9f1336bf94

    SHA256

    34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

    SHA512

    bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    d28a889fd956d5cb3accfbaf1143eb6f

    SHA1

    157ba54b365341f8ff06707d996b3635da8446f7

    SHA256

    21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

    SHA512

    0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iyrlzrzm.qva.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp27F5.tmp.bat

    Filesize

    152B

    MD5

    f2c89d97b7cc6a61da7ce36ada26552c

    SHA1

    4b7a1ab28f06825d18cb765b179727433e638fb9

    SHA256

    1a8998efd76f86effa543d5cf42eac19596b89a7ed7cc556023b40394926c66e

    SHA512

    6cb0c4148cf65513f27854cf34113a39c6087b8ddff3fe99598649f7052f52e6edf9201c710c20f13329db5fe452bc96760aa21ba2afcbbb2d2868a8f6bc82ba

  • memory/1120-43-0x00000000002F0000-0x0000000000306000-memory.dmp

    Filesize

    88KB

  • memory/1120-80-0x00000000053E0000-0x000000000547C000-memory.dmp

    Filesize

    624KB

  • memory/1332-79-0x00000000078D0000-0x0000000007966000-memory.dmp

    Filesize

    600KB

  • memory/1332-59-0x0000000005D40000-0x0000000006094000-memory.dmp

    Filesize

    3.3MB

  • memory/1332-89-0x0000000007880000-0x000000000788E000-memory.dmp

    Filesize

    56KB

  • memory/1332-91-0x0000000007990000-0x00000000079AA000-memory.dmp

    Filesize

    104KB

  • memory/1332-92-0x0000000007970000-0x0000000007978000-memory.dmp

    Filesize

    32KB

  • memory/1332-82-0x0000000007850000-0x0000000007861000-memory.dmp

    Filesize

    68KB

  • memory/1332-46-0x0000000005430000-0x0000000005A58000-memory.dmp

    Filesize

    6.2MB

  • memory/1332-78-0x00000000076C0000-0x00000000076CA000-memory.dmp

    Filesize

    40KB

  • memory/1332-47-0x0000000005AC0000-0x0000000005AE2000-memory.dmp

    Filesize

    136KB

  • memory/1332-49-0x0000000005CD0000-0x0000000005D36000-memory.dmp

    Filesize

    408KB

  • memory/1332-48-0x0000000005C60000-0x0000000005CC6000-memory.dmp

    Filesize

    408KB

  • memory/1332-90-0x0000000007890000-0x00000000078A4000-memory.dmp

    Filesize

    80KB

  • memory/1332-45-0x0000000004D60000-0x0000000004D96000-memory.dmp

    Filesize

    216KB

  • memory/1332-61-0x0000000006300000-0x000000000631E000-memory.dmp

    Filesize

    120KB

  • memory/1332-62-0x00000000063A0000-0x00000000063EC000-memory.dmp

    Filesize

    304KB

  • memory/1332-64-0x000000006FA70000-0x000000006FABC000-memory.dmp

    Filesize

    304KB

  • memory/1332-63-0x00000000068F0000-0x0000000006922000-memory.dmp

    Filesize

    200KB

  • memory/1332-74-0x0000000006930000-0x000000000694E000-memory.dmp

    Filesize

    120KB

  • memory/1332-75-0x00000000075B0000-0x0000000007653000-memory.dmp

    Filesize

    652KB

  • memory/1332-77-0x0000000007660000-0x000000000767A000-memory.dmp

    Filesize

    104KB

  • memory/1332-76-0x0000000007CE0000-0x000000000835A000-memory.dmp

    Filesize

    6.5MB

  • memory/3964-112-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-125-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-8-0x00007FFC09E50000-0x00007FFC0A911000-memory.dmp

    Filesize

    10.8MB

  • memory/3964-7-0x0000028A99DC0000-0x0000028A99E04000-memory.dmp

    Filesize

    272KB

  • memory/3964-6-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-5-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-88-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-2-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-3-0x00007FFC28E10000-0x00007FFC28E20000-memory.dmp

    Filesize

    64KB

  • memory/3964-4-0x00007FFC09E53000-0x00007FFC09E55000-memory.dmp

    Filesize

    8KB

  • memory/3964-1-0x00007FF48B100000-0x00007FF48B4D1000-memory.dmp

    Filesize

    3.8MB

  • memory/3964-98-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-101-0x00007FF48B100000-0x00007FF48B4D1000-memory.dmp

    Filesize

    3.8MB

  • memory/3964-100-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-102-0x00007FFC09E50000-0x00007FFC0A911000-memory.dmp

    Filesize

    10.8MB

  • memory/3964-103-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-104-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-105-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-106-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-107-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-108-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-109-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-110-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-111-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-0-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-113-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-114-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-115-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-116-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-117-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-118-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-119-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-120-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-121-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-122-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-123-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-124-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-159-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-126-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-127-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-128-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-129-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-130-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-131-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-132-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-133-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-134-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-135-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-136-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-137-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-138-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-139-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-140-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-141-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-142-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-143-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-144-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-145-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-146-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-147-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-148-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-149-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-150-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-151-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-152-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-153-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-154-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-155-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-156-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-157-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/3964-158-0x00007FF711BA0000-0x00007FF712A6C000-memory.dmp

    Filesize

    14.8MB

  • memory/4792-9-0x000001EDAFB00000-0x000001EDAFB22000-memory.dmp

    Filesize

    136KB

  • memory/4792-19-0x00007FFC09E50000-0x00007FFC0A911000-memory.dmp

    Filesize

    10.8MB

  • memory/4792-20-0x00007FFC09E50000-0x00007FFC0A911000-memory.dmp

    Filesize

    10.8MB

  • memory/4792-23-0x00007FFC09E50000-0x00007FFC0A911000-memory.dmp

    Filesize

    10.8MB

  • memory/4792-24-0x00007FFC09E50000-0x00007FFC0A911000-memory.dmp

    Filesize

    10.8MB