Analysis
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max time kernel
64s -
max time network
64s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
12-02-2024 00:41
Static task
static1
Behavioral task
behavioral1
Sample
InjectionLibrary.dll
Resource
win10v2004-20231215-en
Behavioral task
behavioral2
Sample
InjectionLibrary.dll
Resource
win11-20231215-en
Behavioral task
behavioral3
Sample
NostalgiaPaste.exe
Resource
win10v2004-20231222-en
General
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Target
NostalgiaPaste.exe
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Size
614KB
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MD5
863ccaa8f5615fd603e3df9e08d433c6
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SHA1
58e5ac27b4c8ce04b705fbd4fc267c7c96ae8438
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SHA256
b502a581b8b5f291508791631fbd40853edc952572eaa214086f6a91694a284a
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SHA512
715dccca665ffc88da761fc2ae0a9a01a477c3546b86fc0922ca033b4826f44b42c2c718b1adec2c26e9736e3e81c144ef5f5161706daa3acbabe8b0f952a906
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SSDEEP
12288:3l/5a8Yv+Gk+IRvmf8lDATKwRP7NaaWSxpumTFzoLIOnrDjfBlfrkfVNaw9mmrz6:3P9rGbIRuf8lkRP7NaLGNoLbjfBl4NN7
Malware Config
Signatures
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Detect Umbral payload 3 IoCs
resource yara_rule behavioral3/memory/848-8-0x0000000007630000-0x000000000766E000-memory.dmp family_umbral behavioral3/files/0x000a00000001e50f-13.dat family_umbral behavioral3/memory/3472-21-0x00000157B3FD0000-0x00000157B4010000-memory.dmp family_umbral -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation NostalgiaPaste.exe -
Executes dropped EXE 1 IoCs
pid Process 3472 nostalgia_authentication.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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Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 21 discord.com 22 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 18 ip-api.com -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 2032 wmic.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 4236 powershell.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 4236 powershell.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 1272 powershell.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 1272 powershell.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 3096 powershell.exe 848 NostalgiaPaste.exe 3096 powershell.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 3400 powershell.exe 848 NostalgiaPaste.exe 3400 powershell.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 4336 powershell.exe 4336 powershell.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe 848 NostalgiaPaste.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 848 NostalgiaPaste.exe Token: SeDebugPrivilege 3472 nostalgia_authentication.exe Token: SeDebugPrivilege 4236 powershell.exe Token: SeDebugPrivilege 1272 powershell.exe Token: SeDebugPrivilege 3096 powershell.exe Token: SeDebugPrivilege 3400 powershell.exe Token: SeIncreaseQuotaPrivilege 1456 wmic.exe Token: SeSecurityPrivilege 1456 wmic.exe Token: SeTakeOwnershipPrivilege 1456 wmic.exe Token: SeLoadDriverPrivilege 1456 wmic.exe Token: SeSystemProfilePrivilege 1456 wmic.exe Token: SeSystemtimePrivilege 1456 wmic.exe Token: SeProfSingleProcessPrivilege 1456 wmic.exe Token: SeIncBasePriorityPrivilege 1456 wmic.exe Token: SeCreatePagefilePrivilege 1456 wmic.exe Token: SeBackupPrivilege 1456 wmic.exe Token: SeRestorePrivilege 1456 wmic.exe Token: SeShutdownPrivilege 1456 wmic.exe Token: SeDebugPrivilege 1456 wmic.exe Token: SeSystemEnvironmentPrivilege 1456 wmic.exe Token: SeRemoteShutdownPrivilege 1456 wmic.exe Token: SeUndockPrivilege 1456 wmic.exe Token: SeManageVolumePrivilege 1456 wmic.exe Token: 33 1456 wmic.exe Token: 34 1456 wmic.exe Token: 35 1456 wmic.exe Token: 36 1456 wmic.exe Token: SeIncreaseQuotaPrivilege 1456 wmic.exe Token: SeSecurityPrivilege 1456 wmic.exe Token: SeTakeOwnershipPrivilege 1456 wmic.exe Token: SeLoadDriverPrivilege 1456 wmic.exe Token: SeSystemProfilePrivilege 1456 wmic.exe Token: SeSystemtimePrivilege 1456 wmic.exe Token: SeProfSingleProcessPrivilege 1456 wmic.exe Token: SeIncBasePriorityPrivilege 1456 wmic.exe Token: SeCreatePagefilePrivilege 1456 wmic.exe Token: SeBackupPrivilege 1456 wmic.exe Token: SeRestorePrivilege 1456 wmic.exe Token: SeShutdownPrivilege 1456 wmic.exe Token: SeDebugPrivilege 1456 wmic.exe Token: SeSystemEnvironmentPrivilege 1456 wmic.exe Token: SeRemoteShutdownPrivilege 1456 wmic.exe Token: SeUndockPrivilege 1456 wmic.exe Token: SeManageVolumePrivilege 1456 wmic.exe Token: 33 1456 wmic.exe Token: 34 1456 wmic.exe Token: 35 1456 wmic.exe Token: 36 1456 wmic.exe Token: SeIncreaseQuotaPrivilege 5084 wmic.exe Token: SeSecurityPrivilege 5084 wmic.exe Token: SeTakeOwnershipPrivilege 5084 wmic.exe Token: SeLoadDriverPrivilege 5084 wmic.exe Token: SeSystemProfilePrivilege 5084 wmic.exe Token: SeSystemtimePrivilege 5084 wmic.exe Token: SeProfSingleProcessPrivilege 5084 wmic.exe Token: SeIncBasePriorityPrivilege 5084 wmic.exe Token: SeCreatePagefilePrivilege 5084 wmic.exe Token: SeBackupPrivilege 5084 wmic.exe Token: SeRestorePrivilege 5084 wmic.exe Token: SeShutdownPrivilege 5084 wmic.exe Token: SeDebugPrivilege 5084 wmic.exe Token: SeSystemEnvironmentPrivilege 5084 wmic.exe Token: SeRemoteShutdownPrivilege 5084 wmic.exe Token: SeUndockPrivilege 5084 wmic.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 848 wrote to memory of 3472 848 NostalgiaPaste.exe 86 PID 848 wrote to memory of 3472 848 NostalgiaPaste.exe 86 PID 3472 wrote to memory of 4236 3472 nostalgia_authentication.exe 87 PID 3472 wrote to memory of 4236 3472 nostalgia_authentication.exe 87 PID 3472 wrote to memory of 1272 3472 nostalgia_authentication.exe 89 PID 3472 wrote to memory of 1272 3472 nostalgia_authentication.exe 89 PID 3472 wrote to memory of 3096 3472 nostalgia_authentication.exe 93 PID 3472 wrote to memory of 3096 3472 nostalgia_authentication.exe 93 PID 3472 wrote to memory of 3400 3472 nostalgia_authentication.exe 96 PID 3472 wrote to memory of 3400 3472 nostalgia_authentication.exe 96 PID 3472 wrote to memory of 1456 3472 nostalgia_authentication.exe 99 PID 3472 wrote to memory of 1456 3472 nostalgia_authentication.exe 99 PID 3472 wrote to memory of 5084 3472 nostalgia_authentication.exe 101 PID 3472 wrote to memory of 5084 3472 nostalgia_authentication.exe 101 PID 3472 wrote to memory of 2916 3472 nostalgia_authentication.exe 103 PID 3472 wrote to memory of 2916 3472 nostalgia_authentication.exe 103 PID 3472 wrote to memory of 4336 3472 nostalgia_authentication.exe 105 PID 3472 wrote to memory of 4336 3472 nostalgia_authentication.exe 105 PID 3472 wrote to memory of 2032 3472 nostalgia_authentication.exe 108 PID 3472 wrote to memory of 2032 3472 nostalgia_authentication.exe 108
Processes
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C:\Users\Admin\AppData\Local\Temp\NostalgiaPaste.exe"C:\Users\Admin\AppData\Local\Temp\NostalgiaPaste.exe"1⤵
- Checks computer location settings
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:848 -
C:\Users\Admin\AppData\Local\Temp\nostalgia_authentication.exe"C:\Users\Admin\AppData\Local\Temp\nostalgia_authentication.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3472 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\nostalgia_authentication.exe'3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4236
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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 23⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1272
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3096
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3400
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1456
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory3⤵
- Suspicious use of AdjustPrivilegeToken
PID:5084
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid3⤵PID:2916
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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_IDENTIFIER3⤵
- Suspicious behavior: EnumeratesProcesses
PID:4336
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C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name3⤵
- Detects videocard installed
PID:2032
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
1KB
MD56317adf4fbc43ea2fd68861fafd57155
SHA16b87c718893c83c6eed2767e8d9cbc6443e31913
SHA256c1ead17eef37b4b461cedc276504a441489e819c7f943037f2001966aeec90af
SHA51217229aae8622e4bfc3caaac55684f7d4ccd3162af5919c851b1d8ac4060b6bb7b75044ecee116523d05acb55197dcb60780958f629450edef386f1e6f65f49f0
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Filesize
944B
MD5d28a889fd956d5cb3accfbaf1143eb6f
SHA1157ba54b365341f8ff06707d996b3635da8446f7
SHA25621e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA5120b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
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Filesize
948B
MD52af06a6b36db9473e4a7d9c7ab72b70b
SHA18ef34b9b961e51bdd1b8d7d9db2ec1b0a4764645
SHA25618a2aa7e245c6732f95fb7749b2b4d29007f2c56a9c5bfbc5e3c127bdfe5f158
SHA5123495567a5d5af94ae27be51313d9e2630c52017d808042fe0d56baa34fa1d246eb15c253d14c77c77a1d8f2f1c81680e623044ae95415b095696e7fa141ac7cf
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Filesize
1KB
MD5276798eeb29a49dc6e199768bc9c2e71
SHA15fdc8ccb897ac2df7476fbb07517aca5b7a6205b
SHA256cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc
SHA5120d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
229KB
MD59807cd8bd9f25a62782f5ef42ef82432
SHA1942ca4582b457f0f3768e02a3422e2646ec774e7
SHA2569072ab80200c13dd896e67257dd9fa4f8795bbca69513d1529fa782c54ffb13d
SHA512dd51a1d295778593c40ef27d8319ef04a0b02ee0b7a68c599aea83846d17d1db1f445ec63890639d3e9da649aac7613aa296f3e50be0a41c28683136e59ba1c3