General
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Target
ab3985e07195465b9a9d8c5a9959e783e2a30f6d6e7fdda3ab153de4d7fc6fe6_JC.exe
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Size
468KB
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Sample
230917-lj59vsbf25
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MD5
e6f506f57365deb1b24b84eafbd9271f
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SHA1
d120720527f6d02f2c6e058bc95cc18d8c23f269
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SHA256
ab3985e07195465b9a9d8c5a9959e783e2a30f6d6e7fdda3ab153de4d7fc6fe6
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SHA512
3273f5720d13ae0c77eb9e35ef52368f187b4acfe1e40471629c6e51e0f7c442f420bd0cbbe1f5e21918760fdd260cb86b7086eb93d92e28d00b502cd3e066e9
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SSDEEP
12288:zPmdD7nWjmGR5iErreKOOkLsxhDzfrroATRwJJ:7mN7u5iEKOKalroATRwX
Static task
static1
Behavioral task
behavioral1
Sample
ab3985e07195465b9a9d8c5a9959e783e2a30f6d6e7fdda3ab153de4d7fc6fe6_JC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
ab3985e07195465b9a9d8c5a9959e783e2a30f6d6e7fdda3ab153de4d7fc6fe6_JC.exe
Resource
win10v2004-20230915-en
Malware Config
Targets
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Target
ab3985e07195465b9a9d8c5a9959e783e2a30f6d6e7fdda3ab153de4d7fc6fe6_JC.exe
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Size
468KB
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MD5
e6f506f57365deb1b24b84eafbd9271f
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SHA1
d120720527f6d02f2c6e058bc95cc18d8c23f269
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SHA256
ab3985e07195465b9a9d8c5a9959e783e2a30f6d6e7fdda3ab153de4d7fc6fe6
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SHA512
3273f5720d13ae0c77eb9e35ef52368f187b4acfe1e40471629c6e51e0f7c442f420bd0cbbe1f5e21918760fdd260cb86b7086eb93d92e28d00b502cd3e066e9
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SSDEEP
12288:zPmdD7nWjmGR5iErreKOOkLsxhDzfrroATRwJJ:7mN7u5iEKOKalroATRwX
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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 (87) 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
3File Deletion
3Modify Registry
1Pre-OS Boot
1Bootkit
1