Windows 7 deprecation
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General
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Target
Setup.zip
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Size
11.7MB
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Sample
230504-hjmwqsad75
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MD5
fc132bc11e3b04630ccf796597d0afbb
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SHA1
5afead39f8807ca8817487c76405362c75ad133e
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SHA256
f387a8332e1765f0cd71cb73aad027dea840436e6879cdbd103ee19cc04a1b81
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SHA512
575cf4b11fe904a4c45af276400f1b853d444b9df91ee88afb135c6ae81b1a291c029cb8af871285ef9df559ce4ada24612f93f5c5fb065abaddfc4262215e11
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SSDEEP
49152:Z0zuzLyZTDGcUiIOy0LzH44VhGUnNvYWgiTgPYC8Fpy9LpjPQgDg3:ZWuzOGRV4LnNvYC0PYCTjPQgy
Behavioral task
behavioral1
Sample
Setup.exe
Resource
win7-20230220-en
Malware Config
Extracted
vidar
3.7
41259ba39e7d2a1b343e34c89786c56f
https://steamcommunity.com/profiles/76561199501059503
https://t.me/mastersbots
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profile_id_v2
41259ba39e7d2a1b343e34c89786c56f
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user_agent
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/112.0
Extracted
laplas
http://185.209.161.89
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api_key
6a2714906f1325d666e4cf9f6269c2352ccfb7e7f1a23c114287dc69ddf27cb0
Targets
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Target
Setup.exe
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Size
1024.0MB
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MD5
5e379c09784c0b093d430f5438ea881d
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SHA1
b73aecf39e5909bc972ca3eabc147c30dbde4caf
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SHA256
bfe4a7fd2312bac3c06a31985a1884be39af15aa310c5396bbb4d51a23324499
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SHA512
ac28d28e5ec9a5a5b0ff5621fa4213bf4c54ab3937d2efc0abf1ffd71f18ae7ef31b0e15e75168d3f7ba4e3f9aaae2bc868996b5c83e11efe42427a0a648be60
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SSDEEP
98304:h77a3TZRRiRRRwRRRRRRR6RURRFRRRRdRRRRRRJRRRRRRRRRRRRRRER7RRRRRRRS:h77BmnfzuL21F5oQegx+U
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Downloads MZ/PE file
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Drops file in Drivers directory
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Stops running service(s)
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Executes dropped EXE
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Loads dropped DLL
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Uses the VBS compiler for execution
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Adds Run key to start application
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Drops file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v6
Persistence
Modify Existing Service
1Registry Run Keys / Startup Folder
1Scheduled Task
1Defense Evasion
Impair Defenses
1Modify Registry
1Scripting
1Virtualization/Sandbox Evasion
1