General
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Target
8fb7e071f7176a17dafadf82be9fd8f69a327729.rl.zip
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Size
3.0MB
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Sample
220517-nnjmrsbca8
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MD5
81c8b7e94ba100f73c27840e70c9faa6
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SHA1
9b95cea9f3307b39ad77ceac5cdb9ac80b27d381
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SHA256
8015fd56cd4385490ff681f9cff279125c9ab8ae9dea8209428949d1d5c08af8
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SHA512
0e0e9fc17b5eb4f187e5878e3f6bbb3b3eeca3227019b0d01a4c1422c0635b87fd0b78275fd7e939af28488cbda2eb2074178eadafbde562060cd767e57135ec
Static task
static1
Behavioral task
behavioral1
Sample
8fb7e071f7176a17dafadf82be9fd8f69a327729.exe
Resource
win7-20220414-en
Malware Config
Targets
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Target
8fb7e071f7176a17dafadf82be9fd8f69a327729.rl
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Size
4.0MB
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MD5
6a23eb71a9d38bb41d260439e66b9089
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SHA1
8fb7e071f7176a17dafadf82be9fd8f69a327729
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SHA256
b634a8041412c63c42bbc10264b4c70b6a84d8aeb01a7d75d89731bb551835ac
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SHA512
195ce37bd24541f6584d23d48d2a79e4ab157f78f4c947f006aa2566e3a8a0351319e3cb1788eba79932d21a526035b6f1ba4943a6abc3a4bff66fe8d3691532
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Modifies security service
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Modifies system executable filetype association
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Registers COM server for autorun
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Checks for common network interception software
Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.
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Enumerates VirtualBox registry keys
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Modifies boot configuration data using bcdedit
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Downloads MZ/PE file
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Drops file in Drivers directory
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Executes dropped EXE
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Modifies Installed Components in the registry
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Sets service image path in registry
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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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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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Adds Run key to start application
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Checks for any installed AV software in registry
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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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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
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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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Drops file in System32 directory
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MITRE ATT&CK Matrix ATT&CK v6
Persistence
Modify Existing Service
1Change Default File Association
1Registry Run Keys / Startup Folder
4Browser Extensions
1Bootkit
1Defense Evasion
Modify Registry
8Virtualization/Sandbox Evasion
2Install Root Certificate
1