General
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Target
8c18b933d524a01122f449c97fa9e34087d1d9a528573471442db0a98e885d8d
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Size
1.2MB
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Sample
230819-feyrbsga55
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MD5
3a750a066e1dbe16f5cec862d21064b5
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SHA1
044ac79c6d714d0a01eea6160d331f9c26086476
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SHA256
8c18b933d524a01122f449c97fa9e34087d1d9a528573471442db0a98e885d8d
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SHA512
7212b2e28ce3f23977c0cc4bc8192b8c86d5b66b917d46ab7125c6f4d9c9b9672b82ba8361030178dcb80e5cae0b01b1efcf70c2e4856e15a11cf7faa7c4d0a0
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SSDEEP
24576:Wa/0m4gSdCafdkeRzUhzHFxqzvv9o/CkV6PBOtlQY03ej46/l:Wa8mEsrg4Pl
Static task
static1
Behavioral task
behavioral1
Sample
8c18b933d524a01122f449c97fa9e34087d1d9a528573471442db0a98e885d8d.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
8c18b933d524a01122f449c97fa9e34087d1d9a528573471442db0a98e885d8d.exe
Resource
win10-20230703-en
Malware Config
Extracted
C:\Users\Admin\Desktop\info.hta
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Targets
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Target
8c18b933d524a01122f449c97fa9e34087d1d9a528573471442db0a98e885d8d
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Size
1.2MB
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MD5
3a750a066e1dbe16f5cec862d21064b5
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SHA1
044ac79c6d714d0a01eea6160d331f9c26086476
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SHA256
8c18b933d524a01122f449c97fa9e34087d1d9a528573471442db0a98e885d8d
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SHA512
7212b2e28ce3f23977c0cc4bc8192b8c86d5b66b917d46ab7125c6f4d9c9b9672b82ba8361030178dcb80e5cae0b01b1efcf70c2e4856e15a11cf7faa7c4d0a0
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SSDEEP
24576:Wa/0m4gSdCafdkeRzUhzHFxqzvv9o/CkV6PBOtlQY03ej46/l:Wa8mEsrg4Pl
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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 (451) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Blocklisted process makes network request
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Downloads MZ/PE file
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Modifies Windows Firewall
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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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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
1