Analysis
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max time kernel
90s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
25-11-2022 22:00
Static task
static1
Behavioral task
behavioral1
Sample
CF߱ѪBUGѪ+һݵع.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
CF߱ѪBUGѪ+һݵع.exe
Resource
win10v2004-20220901-en
General
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Target
CF߱ѪBUGѪ+һݵع.exe
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Size
1.6MB
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MD5
aa170b937b6db142ad42b2771ebce387
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SHA1
6fb8945883f2cc86f5d5ef61b6b34cc270f40340
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SHA256
de295c417b505d475280a0247c8786a3b73fff987090de8954f57e454fcfb028
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SHA512
d647e3635725f0f02538df36f2f6c1a50fab9f19fd476968089854c52c99319d8d798c61551ad97d2a5f4b6f56fec581aa3d362f9bb16b86284a44841bf27dbe
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SSDEEP
24576:dNU0Ncda2IQ6KqD9n+9mu0QDcsDsRuYqTXwgKw4v1TuSSx2O8pn8p+:df66zx5QDctuSjGEO8188
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
RTPCS5S.exepid process 1900 RTPCS5S.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
CF߱ѪBUGѪ+һݵع.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ÎÒµÄÆô¶¯Ïî = "C:\\Windows\\system32\\/RTPCS5S.exe" CF߱ѪBUGѪ+һݵع.exe -
Drops file in System32 directory 1 IoCs
Processes:
CF߱ѪBUGѪ+һݵع.exedescription ioc process File created C:\Windows\SysWOW64\RTPCS5S.exe CF߱ѪBUGѪ+һݵع.exe -
Processes:
CF߱ѪBUGѪ+һݵع.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main CF߱ѪBUGѪ+һݵع.exe -
Modifies Internet Explorer start page 1 TTPs 1 IoCs
Processes:
CF߱ѪBUGѪ+һݵع.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Start Page = "www.2345.com/?keyybc" CF߱ѪBUGѪ+һݵع.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
CF߱ѪBUGѪ+һݵع.exepid process 2412 CF߱ѪBUGѪ+һݵع.exe 2412 CF߱ѪBUGѪ+һݵع.exe 2412 CF߱ѪBUGѪ+һݵع.exe 2412 CF߱ѪBUGѪ+һݵع.exe 2412 CF߱ѪBUGѪ+һݵع.exe 2412 CF߱ѪBUGѪ+һݵع.exe 2412 CF߱ѪBUGѪ+һݵع.exe 2412 CF߱ѪBUGѪ+һݵع.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
CF߱ѪBUGѪ+һݵع.exeRTPCS5S.exepid process 2412 CF߱ѪBUGѪ+һݵع.exe 2412 CF߱ѪBUGѪ+һݵع.exe 1900 RTPCS5S.exe 1900 RTPCS5S.exe 1900 RTPCS5S.exe 1900 RTPCS5S.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
CF߱ѪBUGѪ+һݵع.exedescription pid process target process PID 2412 wrote to memory of 1900 2412 CF߱ѪBUGѪ+һݵع.exe RTPCS5S.exe PID 2412 wrote to memory of 1900 2412 CF߱ѪBUGѪ+һݵع.exe RTPCS5S.exe PID 2412 wrote to memory of 1900 2412 CF߱ѪBUGѪ+һݵع.exe RTPCS5S.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\CF߱ѪBUGѪ+һݵع.exe"C:\Users\Admin\AppData\Local\Temp\CF߱ѪBUGѪ+һݵع.exe"1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Modifies Internet Explorer settings
- Modifies Internet Explorer start page
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2412 -
C:\Windows\SysWOW64\RTPCS5S.exeC:\Windows\system32\/RTPCS5S.exe2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1900
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Windows\SysWOW64\RTPCS5S.exeFilesize
860KB
MD5b2d6bacc36f7bd353333e0b420f26d40
SHA1fc6d42b77e8d897fc5c871d89aa7a646c43a7394
SHA2566f5451d9d64e6b0c45a17ef0f418f2d43995e2ca384786fb7ccabd49210544bc
SHA512bb840dd25e808a434fa5934d33c64fd94ae1946412e97f72d9c6e06e3cf85d2783d9ded3cb75e38ea42671b178a45fde1124acddce286508aba6e9e0e58746a1
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C:\Windows\SysWOW64\RTPCS5S.exeFilesize
860KB
MD5b2d6bacc36f7bd353333e0b420f26d40
SHA1fc6d42b77e8d897fc5c871d89aa7a646c43a7394
SHA2566f5451d9d64e6b0c45a17ef0f418f2d43995e2ca384786fb7ccabd49210544bc
SHA512bb840dd25e808a434fa5934d33c64fd94ae1946412e97f72d9c6e06e3cf85d2783d9ded3cb75e38ea42671b178a45fde1124acddce286508aba6e9e0e58746a1
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memory/1900-132-0x0000000000000000-mapping.dmp