General
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Target
rh111.exe
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Size
1.9MB
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Sample
231002-q57f9sch62
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MD5
1b87684768db892932be3f0661c54251
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SHA1
e5acdb93f6eb75656c9a8242e21b01bf978dc7cf
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SHA256
65fcd66d75c64db0f8b7819431d77f83a421e9fd210ff6bdf74c47e7a4c39636
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SHA512
0fc3cc6ed99e45a3d1ca7cd2dd4d7bfc2f5f11ee7cf0e3d58bfbb4db26f16599cae45b96fc032cd6a050c1ea70bfd02291537088168dd149eee85b38d2527a82
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SSDEEP
24576:jx4Ul0rrIOGz9I6U7AeyGvHynlLghECQl4L529dktxtPCv1ri+J/ac//zWOYopmB:mUl0/2kHW8ECQl4wi+snopp2vQ
Static task
static1
Behavioral task
behavioral1
Sample
rh111.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
rh111.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/
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\users\public\desktop\info.hta
Targets
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Target
rh111.exe
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Size
1.9MB
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MD5
1b87684768db892932be3f0661c54251
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SHA1
e5acdb93f6eb75656c9a8242e21b01bf978dc7cf
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SHA256
65fcd66d75c64db0f8b7819431d77f83a421e9fd210ff6bdf74c47e7a4c39636
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SHA512
0fc3cc6ed99e45a3d1ca7cd2dd4d7bfc2f5f11ee7cf0e3d58bfbb4db26f16599cae45b96fc032cd6a050c1ea70bfd02291537088168dd149eee85b38d2527a82
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SSDEEP
24576:jx4Ul0rrIOGz9I6U7AeyGvHynlLghECQl4L529dktxtPCv1ri+J/ac//zWOYopmB:mUl0/2kHW8ECQl4wi+snopp2vQ
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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 (590) 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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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
3File Deletion
3Modify Registry
1Pre-OS Boot
1Bootkit
1