Analysis

  • max time kernel
    136s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-12-2024 02:48

General

  • Target

    53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe

  • Size

    693KB

  • MD5

    32a1c8ff16fa3dde2509d9cf26f79ba0

  • SHA1

    eb8d087b2be3fb85375b77244e4a8e9ea5d6044b

  • SHA256

    53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219

  • SHA512

    b628a47a0e3d5ae508093915b844c480b4fa31b7bed8ed1fbc19afecc7225228c176c0a018cf3842a92447af88cdc36e7e82e1303a1f0078c6ce3854f1836088

  • SSDEEP

    12288:C+JoKggb2iNdvpc++Ghkd1fW1xLeM2TgN/0s:CIoKgK1XpS4u+Ugi

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

37.0.14.197:6060

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    images.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • 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 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 12 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 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
    "C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3156
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pJITYDssoONW.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3312
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pJITYDssoONW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp315C.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2160
    • C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
      "C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1012
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "images" /tr '"C:\Users\Admin\AppData\Roaming\images.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4576
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "images" /tr '"C:\Users\Admin\AppData\Roaming\images.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3124
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4590.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1356
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:3952
        • C:\Users\Admin\AppData\Roaming\images.exe
          "C:\Users\Admin\AppData\Roaming\images.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3996
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pJITYDssoONW.exe"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1228
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pJITYDssoONW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7C6.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:4884
          • C:\Users\Admin\AppData\Roaming\images.exe
            "C:\Users\Admin\AppData\Roaming\images.exe"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:4124

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe.log

    Filesize

    1KB

    MD5

    e08f822522c617a40840c62e4b0fb45e

    SHA1

    ae516dca4da5234be6676d3f234c19ec55725be7

    SHA256

    bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

    SHA512

    894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

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

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

    Filesize

    18KB

    MD5

    3c75b547117ea8171fd90c78ea17c4c2

    SHA1

    32957de5d7f5c072abd85c6fafc99b9dcd31d4dc

    SHA256

    fabf8f6a15148cc2b280720498db3281f0e4fbe5bd157c55e0111a86daa3558d

    SHA512

    a5721f2d7dfb66831090bd507a9e82891fac8b750626f7d4a5d72242d88c7ac33052d674c89255e98a0c60ec74579dd58c9e427b0c6da7117122cf8810474613

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dgzzryic.eq3.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp315C.tmp

    Filesize

    1KB

    MD5

    e7f89fd057f9467e4bdc72edb5fd73a8

    SHA1

    c15f37aa3f57de1ee7369135ca835b92b6ba0eed

    SHA256

    4456fae53b1e515acea9a737b649ef0ca692aaa6cd42ced5b8c841a15dba279a

    SHA512

    1878b0e5e5aeaf19160f8bc0b4c5d784bb862ac6bd5e436aa6f5ac8eb0e9c7ca8131642efa5704874ec6cf8f2dc7b8064d51d12e781ec983481f7928fe7d8c46

  • C:\Users\Admin\AppData\Local\Temp\tmp4590.tmp.bat

    Filesize

    150B

    MD5

    836f289d07455dd6320be3d240b9fef0

    SHA1

    d3664b957819192766cb64761955ee6c023ad089

    SHA256

    b98ddf3f63479f8625fc0cb20f5e141c752c7c9478f71418c44ddad2266a1d49

    SHA512

    e1f3c67069e2474a38955efcf385fc8a04beb326422db5624067db2292aaa9babd6cd93f88762c4ebb94f12c44a6ed1609053c8bf2d569789edbc487d291c931

  • C:\Users\Admin\AppData\Roaming\images.exe

    Filesize

    693KB

    MD5

    32a1c8ff16fa3dde2509d9cf26f79ba0

    SHA1

    eb8d087b2be3fb85375b77244e4a8e9ea5d6044b

    SHA256

    53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219

    SHA512

    b628a47a0e3d5ae508093915b844c480b4fa31b7bed8ed1fbc19afecc7225228c176c0a018cf3842a92447af88cdc36e7e82e1303a1f0078c6ce3854f1836088

  • memory/1012-68-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/1012-27-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/1012-24-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/1228-104-0x00000000076C0000-0x00000000076D1000-memory.dmp

    Filesize

    68KB

  • memory/1228-103-0x00000000073E0000-0x0000000007483000-memory.dmp

    Filesize

    652KB

  • memory/1228-92-0x0000000006200000-0x000000000624C000-memory.dmp

    Filesize

    304KB

  • memory/1228-105-0x0000000007700000-0x0000000007714000-memory.dmp

    Filesize

    80KB

  • memory/1228-93-0x00000000718F0000-0x000000007193C000-memory.dmp

    Filesize

    304KB

  • memory/3156-8-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/3156-6-0x00000000064C0000-0x00000000064E4000-memory.dmp

    Filesize

    144KB

  • memory/3156-10-0x0000000007440000-0x0000000007494000-memory.dmp

    Filesize

    336KB

  • memory/3156-23-0x0000000006E00000-0x0000000006E14000-memory.dmp

    Filesize

    80KB

  • memory/3156-11-0x0000000007540000-0x00000000075DC000-memory.dmp

    Filesize

    624KB

  • memory/3156-15-0x00000000075E0000-0x0000000007646000-memory.dmp

    Filesize

    408KB

  • memory/3156-7-0x0000000074F7E000-0x0000000074F7F000-memory.dmp

    Filesize

    4KB

  • memory/3156-9-0x0000000007300000-0x000000000730C000-memory.dmp

    Filesize

    48KB

  • memory/3156-28-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/3156-5-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/3156-0-0x0000000074F7E000-0x0000000074F7F000-memory.dmp

    Filesize

    4KB

  • memory/3156-4-0x0000000005760000-0x000000000576A000-memory.dmp

    Filesize

    40KB

  • memory/3156-3-0x0000000005780000-0x0000000005812000-memory.dmp

    Filesize

    584KB

  • memory/3156-2-0x0000000005C90000-0x0000000006234000-memory.dmp

    Filesize

    5.6MB

  • memory/3156-1-0x0000000000CA0000-0x0000000000D54000-memory.dmp

    Filesize

    720KB

  • memory/3312-30-0x0000000004F50000-0x0000000004FB6000-memory.dmp

    Filesize

    408KB

  • memory/3312-44-0x0000000071830000-0x000000007187C000-memory.dmp

    Filesize

    304KB

  • memory/3312-54-0x0000000006420000-0x000000000643E000-memory.dmp

    Filesize

    120KB

  • memory/3312-55-0x0000000007040000-0x00000000070E3000-memory.dmp

    Filesize

    652KB

  • memory/3312-56-0x00000000077C0000-0x0000000007E3A000-memory.dmp

    Filesize

    6.5MB

  • memory/3312-57-0x0000000007170000-0x000000000718A000-memory.dmp

    Filesize

    104KB

  • memory/3312-58-0x00000000071E0000-0x00000000071EA000-memory.dmp

    Filesize

    40KB

  • memory/3312-59-0x00000000073F0000-0x0000000007486000-memory.dmp

    Filesize

    600KB

  • memory/3312-60-0x0000000007370000-0x0000000007381000-memory.dmp

    Filesize

    68KB

  • memory/3312-61-0x00000000073A0000-0x00000000073AE000-memory.dmp

    Filesize

    56KB

  • memory/3312-62-0x00000000073B0000-0x00000000073C4000-memory.dmp

    Filesize

    80KB

  • memory/3312-63-0x00000000074B0000-0x00000000074CA000-memory.dmp

    Filesize

    104KB

  • memory/3312-64-0x0000000007490000-0x0000000007498000-memory.dmp

    Filesize

    32KB

  • memory/3312-43-0x0000000006E00000-0x0000000006E32000-memory.dmp

    Filesize

    200KB

  • memory/3312-42-0x0000000005E90000-0x0000000005EDC000-memory.dmp

    Filesize

    304KB

  • memory/3312-72-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/3312-41-0x0000000005E50000-0x0000000005E6E000-memory.dmp

    Filesize

    120KB

  • memory/3312-40-0x0000000005850000-0x0000000005BA4000-memory.dmp

    Filesize

    3.3MB

  • memory/3312-29-0x0000000004EB0000-0x0000000004ED2000-memory.dmp

    Filesize

    136KB

  • memory/3312-22-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/3312-20-0x0000000004FC0000-0x00000000055E8000-memory.dmp

    Filesize

    6.2MB

  • memory/3312-21-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/3312-18-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/3312-17-0x0000000004870000-0x00000000048A6000-memory.dmp

    Filesize

    216KB