General
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Target
Remote Administration Tool.exe
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Size
3.1MB
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Sample
230804-2fs35afh9x
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MD5
73dcb3b3b59192b45f1975fc7a8e9d08
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SHA1
5fdaa30f92acc816c3b43db076f98c91391a3588
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SHA256
d580d7cf10f4eb1cd8aa0cbf80c30f832a0f052c33cdc3d1cf3710e6b67528a8
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SHA512
adce937291bf7c34e255d4b9785884552828cc07fc00b78842402e72e5addb31f61265c2aec593f5bdc1f041bdafd93758bfbc102c8ab25e4bbc7819c16aacc7
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SSDEEP
49152:zv2I22SsaNYfdPBldt698dBcjHPby3EfsAk/WPPoGdfTHHB72eh2NT:zvb22SsaNYfdPBldt6+dBcjHPby2H
Behavioral task
behavioral1
Sample
Remote Administration Tool.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
Remote Administration Tool.exe
Resource
win10v2004-20230703-en
Malware Config
Extracted
quasar
1.4.1
Infected
AmirAmir8565-20409.portmap.host:20409
ff410ede-beff-4970-8e12-7d251057f1fd
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encryption_key
1B172706DED462B59F2A5056AB06A8DD1EE8491B
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Realtek Audio
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subdirectory
SubDir
Targets
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Target
Remote Administration Tool.exe
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Size
3.1MB
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MD5
73dcb3b3b59192b45f1975fc7a8e9d08
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SHA1
5fdaa30f92acc816c3b43db076f98c91391a3588
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SHA256
d580d7cf10f4eb1cd8aa0cbf80c30f832a0f052c33cdc3d1cf3710e6b67528a8
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SHA512
adce937291bf7c34e255d4b9785884552828cc07fc00b78842402e72e5addb31f61265c2aec593f5bdc1f041bdafd93758bfbc102c8ab25e4bbc7819c16aacc7
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SSDEEP
49152:zv2I22SsaNYfdPBldt698dBcjHPby3EfsAk/WPPoGdfTHHB72eh2NT:zvb22SsaNYfdPBldt6+dBcjHPby2H
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Quasar payload
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Downloads MZ/PE file
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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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Modifies system executable filetype association
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Registers COM server for autorun
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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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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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MITRE ATT&CK Enterprise v15
Persistence
BITS Jobs
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1