General
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Target
4568557191778f07e87931a3cb8bb19f.bin
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Size
295.2MB
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Sample
240530-chzk9abf39
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MD5
4568557191778f07e87931a3cb8bb19f
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SHA1
2de50b104aaa20166ac4a5ca54ffa2f7a10967ff
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SHA256
10749906bc204c15934fdba1c3c5bb113156aadacd47d8609a3e543620f05c9a
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SHA512
e29c43a141e5b83bb83bbb2cb86ce7b2b100163e1ec5557522cf4b6c5d2e83066539b4359f0adce282517300d5ce988e7c7f88a03b8d984c303a49033b915d6c
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SSDEEP
6291456:iw1tbMVOw5GAdBLYWk8KmMzMr+Z3NaUSCs5rTZ/eLRl5:i8QhooYQKtzMr+ZdG/Y
Behavioral task
behavioral1
Sample
vir.exe
Resource
win7-20240508-en
Malware Config
Extracted
quasar
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reconnect_delay
3000
Extracted
quasar
1.4.1
romka
jozzu420-51305.portmap.host:51305
0445c342-b551-411c-9b80-cd437437f491
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encryption_key
E1BF1D99459F04CAF668F054744BC2C514B0A3D6
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install_name
Romilyaa.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Windows 10 Boot
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subdirectory
SubDir
Targets
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Target
vir.exe
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Size
336.1MB
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MD5
bc82ea785da1180a8a964b3e54ad106c
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SHA1
4c1952ce778455af8ed10dca7b9f77d7815e8d0a
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SHA256
c283ed662a29c18b117ba63ac41cca356934c6a29a1eb66e30d8305637e3411b
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SHA512
62bf34d75e913a47185664a34555678d0b8c2cf03c9e922b0bdcb085713322bafba2bf396b43a4cda7e0be6d315aea027bba29c628fe561d01e3026b4e0b405b
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SSDEEP
6291456:72qVJw+odBeWFv1k4R4b0ewZkhT4ofHwJjvZDQPf2tLSkHZdHVeVF0oJ:yr+WeSWgfecGT4RjvqP85/A33
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Detect Umbral payload
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Modifies firewall policy service
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PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
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Quasar payload
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Blocklisted process makes network request
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Downloads MZ/PE file
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Manipulates Digital Signatures
Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.
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.NET Reactor proctector
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Unexpected DNS network traffic destination
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops Chrome extension
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Drops desktop.ini file(s)
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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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AutoIT Executable
AutoIT scripts compiled to PE executables.
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Drops file in System32 directory
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Sets desktop wallpaper using registry
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Persistence
Create or Modify System Process
1Windows Service
1Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
3Disable or Modify Tools
3Modify Registry
7Pre-OS Boot
1Bootkit
1Subvert Trust Controls
2Install Root Certificate
1SIP and Trust Provider Hijacking
1Virtualization/Sandbox Evasion
1