Analysis
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max time kernel
51s -
max time network
51s -
platform
windows7_x64 -
resource
win7-en-20211104 -
submitted
05-12-2021 21:27
Static task
static1
Behavioral task
behavioral1
Sample
IlusionChecker.7z
Resource
win7-en-20211104
Behavioral task
behavioral2
Sample
IlusionChecker.7z
Resource
win10-en-20211014
Behavioral task
behavioral3
Sample
IlusionChecker.7z
Resource
win7-en-20211104
Behavioral task
behavioral4
Sample
IlusionChecker.7z
Resource
win10-en-20211014
Behavioral task
behavioral5
Sample
IlusionChecker.7z
Resource
win7-en-20211104
Behavioral task
behavioral6
Sample
IlusionChecker.7z
Resource
win10-en-20211104
General
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Target
IlusionChecker.7z
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Size
3.6MB
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MD5
ffdcbdd06ed59b0c4a507cac8d575913
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SHA1
de5e9d4384db0866f083db001217373b34451ea6
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SHA256
eefc3d0a6af3df17b4c97f8404509550aa8eb99b3757a0ba4590c6bce88c96ca
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SHA512
09765eac9a6f6dd493a6907e20f07e756ae443bdb7a2e10233161e179fc46669fa5796b91df57a3e5cf3607d1f9fb4ab33e002e2b596699115b624f09b3dc5b5
Malware Config
Signatures
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RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
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Executes dropped EXE 1 IoCs
Processes:
IlusionChecker.exepid process 1584 IlusionChecker.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
IlusionChecker.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion IlusionChecker.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion IlusionChecker.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\IlusionChecker\IlusionChecker.exe themida behavioral1/memory/1584-64-0x00000000013C0000-0x00000000013C1000-memory.dmp themida -
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Processes:
IlusionChecker.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA IlusionChecker.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
IlusionChecker.exepid process 1584 IlusionChecker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 2 IoCs
Processes:
rundll32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache rundll32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
IlusionChecker.exepid process 1584 IlusionChecker.exe 1584 IlusionChecker.exe -
Suspicious use of AdjustPrivilegeToken 9 IoCs
Processes:
AUDIODG.EXE7zG.exeIlusionChecker.exedescription pid process Token: 33 1540 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 1540 AUDIODG.EXE Token: 33 1540 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 1540 AUDIODG.EXE Token: SeRestorePrivilege 1988 7zG.exe Token: 35 1988 7zG.exe Token: SeSecurityPrivilege 1988 7zG.exe Token: SeSecurityPrivilege 1988 7zG.exe Token: SeDebugPrivilege 1584 IlusionChecker.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
7zG.exepid process 1988 7zG.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
cmd.exedescription pid process target process PID 768 wrote to memory of 1484 768 cmd.exe rundll32.exe PID 768 wrote to memory of 1484 768 cmd.exe rundll32.exe PID 768 wrote to memory of 1484 768 cmd.exe rundll32.exe
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\IlusionChecker.7z1⤵
- Suspicious use of WriteProcessMemory
PID:768 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\IlusionChecker.7z2⤵
- Modifies registry class
PID:1484
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"1⤵PID:1832
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x4781⤵
- Suspicious use of AdjustPrivilegeToken
PID:1540
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C:\Program Files\7-Zip\7zG.exe"C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\AppData\Local\Temp\IlusionChecker\" -spe -an -ai#7zMap24858:106:7zEvent42001⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1988
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C:\Users\Admin\AppData\Local\Temp\IlusionChecker\IlusionChecker.exe"C:\Users\Admin\AppData\Local\Temp\IlusionChecker\IlusionChecker.exe"1⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1584
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\IlusionChecker\IlusionChecker.exeMD5
75b074c809301513411b15669c3d2e35
SHA1c19e02192b3c57844dff28fdb81830d5dd5e6eaf
SHA2561369ca0bcd6a39f6fbe3b931d61b9b752704b5c43beede8a73a7ce7e0f8d43c6
SHA5125bc40b27062b2f774e26b8fa2b7f58f9aa4d705ce583afbcac0761b40e25a7e555246f4bdf7ade8c6c299e404c85399b235a537d93624042d2a1f331b17a1a10
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memory/768-55-0x000007FEFC071000-0x000007FEFC073000-memory.dmpFilesize
8KB
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memory/1484-56-0x0000000000000000-mapping.dmp
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memory/1584-61-0x0000000076761000-0x0000000076763000-memory.dmpFilesize
8KB
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memory/1584-64-0x00000000013C0000-0x00000000013C1000-memory.dmpFilesize
4KB
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memory/1584-66-0x0000000005480000-0x0000000005481000-memory.dmpFilesize
4KB