Analysis
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max time kernel
26s -
max time network
15s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
20-06-2024 11:21
Static task
static1
General
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Target
Downloads.exe
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Size
411KB
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MD5
87ac4c646fd5b62dbabf59fb6ef34fd7
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SHA1
45832029b6cfa6c4020ee0e1f965bd5898d5f137
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SHA256
65b6f1f4ac0fbc8a7a113548630b284a731e0b219bee029745f2710b6e02c51c
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SHA512
b647910eaeaee60b8d2378986bf824dfddfd9b3a4e0f2a8a723406da1a6072bf9171ee12fd0178e027ddfdc4be8fbb4d74f9e94dd470d4342c6711dbe9ea02b7
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SSDEEP
12288:Kat0EAH49n8BLaWNO8DlIlaRJ3wWxJS7Xy4WtZ:Ft24saW02pbWO4g
Malware Config
Extracted
xworm
127.0.0.1:32901
engineering-thoroughly.gl.at.ply.gg:32901
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Install_directory
%AppData%
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install_file
OxyInstaller.exe
Extracted
44caliber
https://discord.com/api/webhooks/1253302699978526772/b5mqXVOEs47XQy9dHee2Po12VotJwgdPtLauhKlKoyBH-xF42vUZ2Glc0N58n1pvAEdH
Signatures
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Detect Xworm Payload 2 IoCs
Processes:
resource yara_rule C:\Program Files (x86)\sigma\oxyinstaller.exe family_xworm behavioral1/memory/400-26-0x0000000000F40000-0x0000000000F98000-memory.dmp family_xworm -
Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepid process 4884 powershell.exe 2920 powershell.exe 3532 powershell.exe 3828 powershell.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Downloads.exeoxyinstaller.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation Downloads.exe Key value queried \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation oxyinstaller.exe -
Drops startup file 2 IoCs
Processes:
oxyinstaller.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OxyInstaller.lnk oxyinstaller.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OxyInstaller.lnk oxyinstaller.exe -
Executes dropped EXE 2 IoCs
Processes:
Insidious.exeoxyinstaller.exepid process 4024 Insidious.exe 400 oxyinstaller.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 5 freegeoip.app 23 ip-api.com 4 freegeoip.app -
Drops file in Program Files directory 6 IoCs
Processes:
Downloads.exedescription ioc process File created C:\Program Files (x86)\sigma\__tmp_rar_sfx_access_check_240600187 Downloads.exe File created C:\Program Files (x86)\sigma\Insidious.exe Downloads.exe File opened for modification C:\Program Files (x86)\sigma\Insidious.exe Downloads.exe File created C:\Program Files (x86)\sigma\oxyinstaller.exe Downloads.exe File opened for modification C:\Program Files (x86)\sigma\oxyinstaller.exe Downloads.exe File opened for modification C:\Program Files (x86)\sigma Downloads.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
taskmgr.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Modifies data under HKEY_USERS 15 IoCs
Processes:
LogonUI.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "197" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" LogonUI.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 LogonUI.exe -
Suspicious behavior: EnumeratesProcesses 26 IoCs
Processes:
Insidious.exepowershell.exepowershell.exepowershell.exetaskmgr.exepowershell.exepid process 4024 Insidious.exe 4024 Insidious.exe 4024 Insidious.exe 2920 powershell.exe 2920 powershell.exe 3532 powershell.exe 3532 powershell.exe 3828 powershell.exe 3828 powershell.exe 2012 taskmgr.exe 2012 taskmgr.exe 4884 powershell.exe 4884 powershell.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe -
Suspicious behavior: LoadsDriver 64 IoCs
Processes:
pid process 4024 3416 4100 2888 2988 2044 684 548 3044 1612 1552 2356 3724 3496 404 2340 1144 4000 2232 3712 3568 668 2412 3544 4536 2308 3132 3944 968 3376 2864 3880 2064 4112 872 1064 4564 3904 4328 4344 3808 4336 4576 4644 3232 2476 4972 2388 1496 4136 4396 4172 1680 5044 1864 2040 4652 4680 1792 624 3036 4676 5116 4508 -
Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
Insidious.exeoxyinstaller.exepowershell.exepowershell.exepowershell.exetaskmgr.exepowershell.exedescription pid process Token: SeDebugPrivilege 4024 Insidious.exe Token: SeDebugPrivilege 400 oxyinstaller.exe Token: SeDebugPrivilege 2920 powershell.exe Token: SeDebugPrivilege 3532 powershell.exe Token: SeDebugPrivilege 3828 powershell.exe Token: SeDebugPrivilege 2012 taskmgr.exe Token: SeSystemProfilePrivilege 2012 taskmgr.exe Token: SeCreateGlobalPrivilege 2012 taskmgr.exe Token: SeDebugPrivilege 4884 powershell.exe Token: SeDebugPrivilege 400 oxyinstaller.exe -
Suspicious use of FindShellTrayWindow 26 IoCs
Processes:
taskmgr.exepid process 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe -
Suspicious use of SendNotifyMessage 26 IoCs
Processes:
taskmgr.exepid process 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe 2012 taskmgr.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
LogonUI.exepid process 980 LogonUI.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
Downloads.exeoxyinstaller.exedescription pid process target process PID 2516 wrote to memory of 4024 2516 Downloads.exe Insidious.exe PID 2516 wrote to memory of 4024 2516 Downloads.exe Insidious.exe PID 2516 wrote to memory of 400 2516 Downloads.exe oxyinstaller.exe PID 2516 wrote to memory of 400 2516 Downloads.exe oxyinstaller.exe PID 400 wrote to memory of 2920 400 oxyinstaller.exe powershell.exe PID 400 wrote to memory of 2920 400 oxyinstaller.exe powershell.exe PID 400 wrote to memory of 3532 400 oxyinstaller.exe powershell.exe PID 400 wrote to memory of 3532 400 oxyinstaller.exe powershell.exe PID 400 wrote to memory of 3828 400 oxyinstaller.exe powershell.exe PID 400 wrote to memory of 3828 400 oxyinstaller.exe powershell.exe PID 400 wrote to memory of 4884 400 oxyinstaller.exe powershell.exe PID 400 wrote to memory of 4884 400 oxyinstaller.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Downloads.exe"C:\Users\Admin\AppData\Local\Temp\Downloads.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2516 -
C:\Program Files (x86)\sigma\Insidious.exe"C:\Program Files (x86)\sigma\Insidious.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4024
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C:\Program Files (x86)\sigma\oxyinstaller.exe"C:\Program Files (x86)\sigma\oxyinstaller.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:400 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\sigma\oxyinstaller.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2920
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'oxyinstaller.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3532
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\OxyInstaller.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3828
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'OxyInstaller.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4884
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /01⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2012
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x0 /state0:0xa3978055 /state1:0x41c64e6d1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:980
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
303KB
MD5eefb066dcbb1ae4273c3834f74881a25
SHA1013657673cb6fbdc4a04db2a4d01332d9ec37363
SHA2569a23c010ab4bdd266a109740796baecc5b4eb583c1fe8d94b53961a029ca7cc2
SHA5128d5eab85b0a56351bfc56a4940c1097bc3abb93e003135cdacc3e4cbf5b6a464bb3f46750c1466f1ddcffd265f52abf74951eda632d7b31dbd0b7e38c0d99741
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Filesize
325KB
MD5f65b6e70becdeafa363cd101646a0602
SHA11c6ebde3a18aa9ba02202e8ef4139f6c8bbf0c68
SHA256e304be47ba6bd5a80284e6750f4c97181134e9daa0f581c8c47a665084e49555
SHA512409601c4f5f8c4856d77aded96d466f3f9f057bf1edd635de8db42a946478aed467145249bdc6243d2df0172007b76345550b937d8191c403806ce0a755f21fd
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD598baf5117c4fcec1692067d200c58ab3
SHA15b33a57b72141e7508b615e17fb621612cb8e390
SHA25630bf8496e9a08f4fdfe4767abcd565f92b6da06ca1c7823a70cb7cab16262e51
SHA512344a70bfc037d54176f12db91f05bf4295bb587a5062fd1febe6f52853571170bd8ef6042cb87b893185bbae1937cf77b679d7970f8cc1c2666b0b7c1b32987d
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Filesize
944B
MD5d28a889fd956d5cb3accfbaf1143eb6f
SHA1157ba54b365341f8ff06707d996b3635da8446f7
SHA25621e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA5120b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
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Filesize
944B
MD550632ca0f9f268214d6838e8b7c1fe6f
SHA15597251238406133385670a63c0b2c3958712f98
SHA256507b78ee9c8e87d59684d3d2cfed038d896b8f9c37c6c36a2a32ef1777eef3dd
SHA512d9997fbd906311e72a928dbcf474dfdd4869a49729e32cec6c529adbb8e48257c21bec4b79b48e396de239b8ea3c668a1eb1092fcbeb09c0b81094da3228c433
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
798B
MD57c111b0c33535e19e32bbc0efd2a9970
SHA107719cd7ee99c57727e95eb4c132b3f2f562299f
SHA25673e31410099723752c22242ae324497fee3170be7d0ade3f17fc9456140ad65c
SHA51209b2e8d313d2b31bd143c304ae4e9262d91489f190d99e79767887c75e0f54270fd315e8bc1826f28dfdf31e4124e09f4c1cee005faf2ef074d6c42ba1078daf