General
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Target
fab5850b79de211ba1d789f80a4684657b3a79c849d46761decb2de95931162b_JC.exe
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Size
508KB
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Sample
231012-a2skyafh23
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MD5
4a94bfa09b99674b406eefa0fc0f8c5e
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SHA1
583055372661a2a359586a3fc2cdbaecc951659c
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SHA256
fab5850b79de211ba1d789f80a4684657b3a79c849d46761decb2de95931162b
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SHA512
6463035915777cb01b89863eaee6ffe14ea211ac3640f1a6c8bc78f2d2b3692fdee3ff427cd4e5dad6591900f62b6eeba80abe434ff23d2402f2f401fe5e0dec
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SSDEEP
12288:EndeNz+MiYZmsSOgetN5ONjUrhGkOjkLtxOqaF5:EnYNzECS4N5ONjUdGR6POHf
Static task
static1
Behavioral task
behavioral1
Sample
fab5850b79de211ba1d789f80a4684657b3a79c849d46761decb2de95931162b_JC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
fab5850b79de211ba1d789f80a4684657b3a79c849d46761decb2de95931162b_JC.exe
Resource
win10v2004-20230915-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/
Targets
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Target
fab5850b79de211ba1d789f80a4684657b3a79c849d46761decb2de95931162b_JC.exe
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Size
508KB
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MD5
4a94bfa09b99674b406eefa0fc0f8c5e
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SHA1
583055372661a2a359586a3fc2cdbaecc951659c
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SHA256
fab5850b79de211ba1d789f80a4684657b3a79c849d46761decb2de95931162b
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SHA512
6463035915777cb01b89863eaee6ffe14ea211ac3640f1a6c8bc78f2d2b3692fdee3ff427cd4e5dad6591900f62b6eeba80abe434ff23d2402f2f401fe5e0dec
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SSDEEP
12288:EndeNz+MiYZmsSOgetN5ONjUrhGkOjkLtxOqaF5:EnYNzECS4N5ONjUdGR6POHf
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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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Renames multiple (59) 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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Adds Run key to start application
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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
2File Deletion
2Modify Registry
1Pre-OS Boot
1Bootkit
1