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Analysis
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max time kernel
90s -
max time network
95s -
platform
windows11-21h2_x64 -
resource
win11-20241007-en -
resource tags
arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system -
submitted
30/11/2024, 09:37
General
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Target
octosint.exe
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Size
631KB
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MD5
3fbddef1a1957c47cc788a7ea3be9bf1
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SHA1
5d68695893be73ad26a1b6115ac38a3e72e11cbf
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SHA256
f6978810fc08e07982be2acda6f8692bca7011119e15088fcb2ab006de8dece7
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SHA512
76cb0b768c15464ae4dc41d90909a1c740de8e2b3f7b8d37f255068e5a0bd0c6d666e68fcfec47f6cca268de5cf24bc2a85800fb3fe3244fe25b60b8f17c5e54
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SSDEEP
12288:5oZtL+EP8gGVK9rI8j967NokRRC9iMdRC:XI8LVK9rI8j967NokRRsiMdA
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral1/memory/2308-1-0x0000023773DA0000-0x0000023773E44000-memory.dmp family_umbral -
Umbral family
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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.
pid Process 1352 powershell.exe 2080 powershell.exe 3060 powershell.exe 1288 powershell.exe -
Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\System32\drivers\etc\hosts octosint.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 5 discord.com 1 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 1 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 3792 cmd.exe 1036 PING.EXE -
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 4060 wmic.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 1036 PING.EXE -
Suspicious behavior: EnumeratesProcesses 11 IoCs
pid Process 2308 octosint.exe 1352 powershell.exe 1352 powershell.exe 2080 powershell.exe 2080 powershell.exe 3060 powershell.exe 3060 powershell.exe 2960 powershell.exe 2960 powershell.exe 1288 powershell.exe 1288 powershell.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 2308 octosint.exe Token: SeIncreaseQuotaPrivilege 4080 wmic.exe Token: SeSecurityPrivilege 4080 wmic.exe Token: SeTakeOwnershipPrivilege 4080 wmic.exe Token: SeLoadDriverPrivilege 4080 wmic.exe Token: SeSystemProfilePrivilege 4080 wmic.exe Token: SeSystemtimePrivilege 4080 wmic.exe Token: SeProfSingleProcessPrivilege 4080 wmic.exe Token: SeIncBasePriorityPrivilege 4080 wmic.exe Token: SeCreatePagefilePrivilege 4080 wmic.exe Token: SeBackupPrivilege 4080 wmic.exe Token: SeRestorePrivilege 4080 wmic.exe Token: SeShutdownPrivilege 4080 wmic.exe Token: SeDebugPrivilege 4080 wmic.exe Token: SeSystemEnvironmentPrivilege 4080 wmic.exe Token: SeRemoteShutdownPrivilege 4080 wmic.exe Token: SeUndockPrivilege 4080 wmic.exe Token: SeManageVolumePrivilege 4080 wmic.exe Token: 33 4080 wmic.exe Token: 34 4080 wmic.exe Token: 35 4080 wmic.exe Token: 36 4080 wmic.exe Token: SeIncreaseQuotaPrivilege 4080 wmic.exe Token: SeSecurityPrivilege 4080 wmic.exe Token: SeTakeOwnershipPrivilege 4080 wmic.exe Token: SeLoadDriverPrivilege 4080 wmic.exe Token: SeSystemProfilePrivilege 4080 wmic.exe Token: SeSystemtimePrivilege 4080 wmic.exe Token: SeProfSingleProcessPrivilege 4080 wmic.exe Token: SeIncBasePriorityPrivilege 4080 wmic.exe Token: SeCreatePagefilePrivilege 4080 wmic.exe Token: SeBackupPrivilege 4080 wmic.exe Token: SeRestorePrivilege 4080 wmic.exe Token: SeShutdownPrivilege 4080 wmic.exe Token: SeDebugPrivilege 4080 wmic.exe Token: SeSystemEnvironmentPrivilege 4080 wmic.exe Token: SeRemoteShutdownPrivilege 4080 wmic.exe Token: SeUndockPrivilege 4080 wmic.exe Token: SeManageVolumePrivilege 4080 wmic.exe Token: 33 4080 wmic.exe Token: 34 4080 wmic.exe Token: 35 4080 wmic.exe Token: 36 4080 wmic.exe Token: SeDebugPrivilege 1352 powershell.exe Token: SeDebugPrivilege 2080 powershell.exe Token: SeDebugPrivilege 3060 powershell.exe Token: SeDebugPrivilege 2960 powershell.exe Token: SeIncreaseQuotaPrivilege 3276 wmic.exe Token: SeSecurityPrivilege 3276 wmic.exe Token: SeTakeOwnershipPrivilege 3276 wmic.exe Token: SeLoadDriverPrivilege 3276 wmic.exe Token: SeSystemProfilePrivilege 3276 wmic.exe Token: SeSystemtimePrivilege 3276 wmic.exe Token: SeProfSingleProcessPrivilege 3276 wmic.exe Token: SeIncBasePriorityPrivilege 3276 wmic.exe Token: SeCreatePagefilePrivilege 3276 wmic.exe Token: SeBackupPrivilege 3276 wmic.exe Token: SeRestorePrivilege 3276 wmic.exe Token: SeShutdownPrivilege 3276 wmic.exe Token: SeDebugPrivilege 3276 wmic.exe Token: SeSystemEnvironmentPrivilege 3276 wmic.exe Token: SeRemoteShutdownPrivilege 3276 wmic.exe Token: SeUndockPrivilege 3276 wmic.exe Token: SeManageVolumePrivilege 3276 wmic.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 2308 wrote to memory of 4080 2308 octosint.exe 77 PID 2308 wrote to memory of 4080 2308 octosint.exe 77 PID 2308 wrote to memory of 4036 2308 octosint.exe 80 PID 2308 wrote to memory of 4036 2308 octosint.exe 80 PID 2308 wrote to memory of 1352 2308 octosint.exe 82 PID 2308 wrote to memory of 1352 2308 octosint.exe 82 PID 2308 wrote to memory of 2080 2308 octosint.exe 84 PID 2308 wrote to memory of 2080 2308 octosint.exe 84 PID 2308 wrote to memory of 3060 2308 octosint.exe 86 PID 2308 wrote to memory of 3060 2308 octosint.exe 86 PID 2308 wrote to memory of 2960 2308 octosint.exe 88 PID 2308 wrote to memory of 2960 2308 octosint.exe 88 PID 2308 wrote to memory of 3276 2308 octosint.exe 90 PID 2308 wrote to memory of 3276 2308 octosint.exe 90 PID 2308 wrote to memory of 4480 2308 octosint.exe 92 PID 2308 wrote to memory of 4480 2308 octosint.exe 92 PID 2308 wrote to memory of 1964 2308 octosint.exe 94 PID 2308 wrote to memory of 1964 2308 octosint.exe 94 PID 2308 wrote to memory of 1288 2308 octosint.exe 96 PID 2308 wrote to memory of 1288 2308 octosint.exe 96 PID 2308 wrote to memory of 4060 2308 octosint.exe 98 PID 2308 wrote to memory of 4060 2308 octosint.exe 98 PID 2308 wrote to memory of 3792 2308 octosint.exe 100 PID 2308 wrote to memory of 3792 2308 octosint.exe 100 PID 3792 wrote to memory of 1036 3792 cmd.exe 102 PID 3792 wrote to memory of 1036 3792 cmd.exe 102 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 4036 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\octosint.exe"C:\Users\Admin\AppData\Local\Temp\octosint.exe"1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2308 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4080
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C:\Windows\SYSTEM32\attrib.exe"attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\octosint.exe"2⤵
- Views/modifies file attributes
PID:4036
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\octosint.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1352
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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 22⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2080
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3060
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2960
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3276
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory2⤵PID:4480
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵PID:1964
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:1288
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C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name2⤵
- Detects videocard installed
PID:4060
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C:\Windows\SYSTEM32\cmd.exe"cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\octosint.exe" && pause2⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:3792 -
C:\Windows\system32\PING.EXEping localhost3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:1036
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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
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Filesize
2KB
MD5627073ee3ca9676911bee35548eff2b8
SHA14c4b68c65e2cab9864b51167d710aa29ebdcff2e
SHA25685b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
SHA5123c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb
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Filesize
944B
MD51d3ea4fc04f2e2793ab2b91e9c428f63
SHA1f0a18c9491bf229e1eec8e135e01dcb9d13ef235
SHA256d25d8d12f8c81a4174ffc074fe69fa49bab60553f4aec9f4b0c32c7b902f4147
SHA512bec76dca6bc34f040fc265ca065bb94d76d9e67b507182f7119aa5f98930942aa665b9709b6a59802e28a1c56b94fdad4ed4d7e6cdf9de79f035d5b9773d6897
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Filesize
948B
MD56bddc96a32b9ed8fc70b141ccf4a39b2
SHA10f33c0699da40a5eadcec646791cf21cdb0dd7c6
SHA256cb3853abe77eb0da8a1caccb49e97a573b6f35570722eb759116a645d724c132
SHA512e41f1597b4129b759e4199db195df1c24e47cc47dc9850fab2d48e44bc3d37dc3658fbfbb62332a0b93c552587d7fab09de1634f605faa2209b8470c2a6eaca6
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Filesize
1KB
MD57332074ae2b01262736b6fbd9e100dac
SHA122f992165065107cc9417fa4117240d84414a13c
SHA256baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa
SHA5124ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2
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Filesize
1KB
MD538ecc5b95c11e5a77558753102979c51
SHA1c0759b08ef377df9979d8835d8a7e464cd8eaf6b
SHA2562eb69abe0af5a2fb5bb313533cef641e25016876b874353f7d737c7ad672c79e
SHA5129bf4ce3bc097bdd0242bd105c936a9c9403d5ac83ec99e6a310591a7b8d26309485f3e0cdc4cba67c322f834c325a2b63a008adb078f3a3307094c4b68a48686
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82