General
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Target
90c0db8ec400e98196ef525657e1269c5be5292717ad15b39d28ff12a0361cf2
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Size
3.5MB
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Sample
231026-jacvvaed38
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MD5
825f44d2a1ca2f6fe9e670a37bef5949
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SHA1
e369059a70d7731a093d1a359430f515e536689d
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SHA256
90c0db8ec400e98196ef525657e1269c5be5292717ad15b39d28ff12a0361cf2
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SHA512
dd666c5354d716e987948ce5afcba0c1b76304bb937f91883bc5b1cfc9b3eb5423f0a058e75774160e7081b2a3e3e3ebd2955f91f15a10a12e2f0ee4c3444e62
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SSDEEP
98304:Mda0zeATQBUPv45yX9xPjE80JrhFVCY1NhMighXjP5QCDcvdE4:MGUPwENRjEpxLUYjyigBPaCgvdE4
Static task
static1
Behavioral task
behavioral1
Sample
90c0db8ec400e98196ef525657e1269c5be5292717ad15b39d28ff12a0361cf2.exe
Resource
win10-20231023-en
Malware Config
Extracted
smokeloader
2022
http://servermlogs27.xyz/statweb255/
http://servmblog45.xyz/statweb255/
http://demblog575.xyz/statweb255/
http://admlogs85x.xyz/statweb255/
http://blogmstat389.xyz/statweb255/
http://blogmstat255.xyz/statweb255/
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Targets
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Target
90c0db8ec400e98196ef525657e1269c5be5292717ad15b39d28ff12a0361cf2
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Size
3.5MB
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MD5
825f44d2a1ca2f6fe9e670a37bef5949
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SHA1
e369059a70d7731a093d1a359430f515e536689d
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SHA256
90c0db8ec400e98196ef525657e1269c5be5292717ad15b39d28ff12a0361cf2
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SHA512
dd666c5354d716e987948ce5afcba0c1b76304bb937f91883bc5b1cfc9b3eb5423f0a058e75774160e7081b2a3e3e3ebd2955f91f15a10a12e2f0ee4c3444e62
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SSDEEP
98304:Mda0zeATQBUPv45yX9xPjE80JrhFVCY1NhMighXjP5QCDcvdE4:MGUPwENRjEpxLUYjyigBPaCgvdE4
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AmmyyAdmin payload
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Detect rhadamanthys stealer shellcode
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FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
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Rhadamanthys
Rhadamanthys is an info stealer written in C++ first seen in August 2022.
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Modifies boot configuration data using bcdedit
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Renames multiple (444) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Downloads MZ/PE file
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Modifies Windows Firewall
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Deletes itself
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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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Accesses Microsoft Outlook profiles
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Accesses cryptocurrency files/wallets, possible credential harvesting
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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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Drops desktop.ini file(s)
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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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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Defense Evasion
Indicator Removal
3File Deletion
3Modify Registry
1Pre-OS Boot
1Bootkit
1