Analysis
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max time kernel
9s -
max time network
11s -
platform
windows11-21h2_x64 -
resource
win11-20250217-en -
resource tags
arch:x64arch:x86image:win11-20250217-enlocale:en-usos:windows11-21h2-x64system -
submitted
19-02-2025 01:03
General
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Target
FlireExecutorV.1.exe
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Size
256KB
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MD5
f2ea31daa0d364dc5b74ecad855ede4b
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SHA1
cffc55383ad8204d2a4bb60c54b979b637d3f067
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SHA256
4762416b6554c13264748f09c55b5360820e3a109f4635131f7744b47c04b684
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SHA512
84e3ea1d1a6dc7ac85046ca950edc424615229958e05115d4d946dd2a4a95fc70af29b8d9b9a052fa867bb8fe559b20dadb96ffb634312eabce371f1b03c1679
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SSDEEP
6144:bloZM+rIkd8g+EtXHkv/iD4qobpecjfUz1gevPexbb8e1m5ir:5oZtL+EP8qobpecjfUz1gevPeRL
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral1/memory/3152-1-0x0000025E85E70000-0x0000025E85EB6000-memory.dmp family_umbral -
Umbral family
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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 -
Modifies registry class 4 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3835819470-2031661444-2626789713-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Content\CachePrefix BackgroundTransferHost.exe Set value (str) \REGISTRY\USER\S-1-5-21-3835819470-2031661444-2626789713-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:" BackgroundTransferHost.exe Set value (str) \REGISTRY\USER\S-1-5-21-3835819470-2031661444-2626789713-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\History\CachePrefix = "Visited:" BackgroundTransferHost.exe Key created \REGISTRY\USER\S-1-5-21-3835819470-2031661444-2626789713-1000_Classes\Local Settings\MuiCache BackgroundTransferHost.exe -
Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeDebugPrivilege 3152 FlireExecutorV.1.exe Token: SeIncreaseQuotaPrivilege 4824 wmic.exe Token: SeSecurityPrivilege 4824 wmic.exe Token: SeTakeOwnershipPrivilege 4824 wmic.exe Token: SeLoadDriverPrivilege 4824 wmic.exe Token: SeSystemProfilePrivilege 4824 wmic.exe Token: SeSystemtimePrivilege 4824 wmic.exe Token: SeProfSingleProcessPrivilege 4824 wmic.exe Token: SeIncBasePriorityPrivilege 4824 wmic.exe Token: SeCreatePagefilePrivilege 4824 wmic.exe Token: SeBackupPrivilege 4824 wmic.exe Token: SeRestorePrivilege 4824 wmic.exe Token: SeShutdownPrivilege 4824 wmic.exe Token: SeDebugPrivilege 4824 wmic.exe Token: SeSystemEnvironmentPrivilege 4824 wmic.exe Token: SeRemoteShutdownPrivilege 4824 wmic.exe Token: SeUndockPrivilege 4824 wmic.exe Token: SeManageVolumePrivilege 4824 wmic.exe Token: 33 4824 wmic.exe Token: 34 4824 wmic.exe Token: 35 4824 wmic.exe Token: 36 4824 wmic.exe Token: SeIncreaseQuotaPrivilege 4824 wmic.exe Token: SeSecurityPrivilege 4824 wmic.exe Token: SeTakeOwnershipPrivilege 4824 wmic.exe Token: SeLoadDriverPrivilege 4824 wmic.exe Token: SeSystemProfilePrivilege 4824 wmic.exe Token: SeSystemtimePrivilege 4824 wmic.exe Token: SeProfSingleProcessPrivilege 4824 wmic.exe Token: SeIncBasePriorityPrivilege 4824 wmic.exe Token: SeCreatePagefilePrivilege 4824 wmic.exe Token: SeBackupPrivilege 4824 wmic.exe Token: SeRestorePrivilege 4824 wmic.exe Token: SeShutdownPrivilege 4824 wmic.exe Token: SeDebugPrivilege 4824 wmic.exe Token: SeSystemEnvironmentPrivilege 4824 wmic.exe Token: SeRemoteShutdownPrivilege 4824 wmic.exe Token: SeUndockPrivilege 4824 wmic.exe Token: SeManageVolumePrivilege 4824 wmic.exe Token: 33 4824 wmic.exe Token: 34 4824 wmic.exe Token: 35 4824 wmic.exe Token: 36 4824 wmic.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3152 wrote to memory of 4824 3152 FlireExecutorV.1.exe 81 PID 3152 wrote to memory of 4824 3152 FlireExecutorV.1.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\FlireExecutorV.1.exe"C:\Users\Admin\AppData\Local\Temp\FlireExecutorV.1.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3152 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4824
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C:\Windows\system32\BackgroundTransferHost.exe"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.131⤵
- Modifies registry class
PID:2304
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\BackgroundTransferApi\aea8e702-77fe-445a-b1ce-bcc3791444d9.down_data
Filesize555KB
MD55683c0028832cae4ef93ca39c8ac5029
SHA1248755e4e1db552e0b6f8651b04ca6d1b31a86fb
SHA256855abd360d8a8d6974eba92b70cbd09ce519bc8773439993f9ab37cb6847309e
SHA512aba434bd29be191c823b02ea9b639beb10647bbe7759bbffdaa790dfb1ec2c58d74c525ef11aacda209e4effe322d1d3a07b115446c8914b07a3bce4d8a0e2c3