General
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Target
4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c.exe
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Size
6.9MB
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Sample
240923-v9fassydlb
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MD5
f263c2e28b83166ecbae7640f0096509
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SHA1
a3cb462f5954035ca68bc216a99eaa2455766310
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SHA256
4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c
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SHA512
da247c568795c2da413d50006247ff817baa3d395f525adcda15868aefa8743aeac37ed38cadb17106c1c19b64dd5683a25c463a59ad1d4573bca18bebbc7f7e
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SSDEEP
98304:kAI+TK+yCJIyEAgweZ3BcNHVw9g6Tn/MQNB3g7ri6+Y3gFIjf3OsFyMqPPKn77KI:jtdyCJIXHxcN1HM4kY3gFIhyPX0qxm
Static task
static1
Behavioral task
behavioral1
Sample
4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c.exe
Resource
win7-20240903-en
Malware Config
Extracted
https://drive.google.com/uc?export=download&id=
Extracted
https://drive.google.com/uc?export=download&id=
Extracted
quasar
1.4.1
BIIG2
4mekey1.myftp.biz:4782
5c136035-7154-47b7-b78d-a0378c5e03a4
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encryption_key
5A1721840C7FCFA52998D9F98F97F4B8137E6734
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install_name
Windows Server.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
Windows Update
Extracted
Protocol: ftp- Host:
ftp.desckvbrat.com.br - Port:
21 - Username:
desckvbrat1 - Password:
developerpro21578Jp@@
Extracted
asyncrat
1.0.7
07Pjo24
4mekey1.myftp.biz:8848
DcRatMutex_qwqdanchun
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delay
1
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install
false
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install_folder
%AppData%
Extracted
xworm
4Mekey1.myftp.biz:7000
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install_file
USB.exe
Targets
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Target
4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c.exe
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Size
6.9MB
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MD5
f263c2e28b83166ecbae7640f0096509
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SHA1
a3cb462f5954035ca68bc216a99eaa2455766310
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SHA256
4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c
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SHA512
da247c568795c2da413d50006247ff817baa3d395f525adcda15868aefa8743aeac37ed38cadb17106c1c19b64dd5683a25c463a59ad1d4573bca18bebbc7f7e
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SSDEEP
98304:kAI+TK+yCJIyEAgweZ3BcNHVw9g6Tn/MQNB3g7ri6+Y3gFIjf3OsFyMqPPKn77KI:jtdyCJIXHxcN1HM4kY3gFIhyPX0qxm
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Detect Xworm Payload
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Quasar payload
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Blocklisted process makes network request
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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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Adds Run key to start application
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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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Indicator Removal: File Deletion
Adversaries may delete files left behind by the actions of their intrusion activity.
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Legitimate hosting services abused for malware hosting/C2
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Indicator Removal
1File Deletion
1Modify Registry
3Subvert Trust Controls
1Install Root Certificate
1