Analysis
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max time kernel
152s -
max time network
159s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
03-09-2021 17:25
Static task
static1
Behavioral task
behavioral1
Sample
Pdf Attached.exe
Resource
win7-en
Behavioral task
behavioral2
Sample
Pdf Attached.exe
Resource
win10v20210408
General
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Target
Pdf Attached.exe
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Size
731KB
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MD5
643c3d9c512e0e53cacb2b1725f83d90
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SHA1
6a8ef4cdd29fa41d8d45559aadec3e44a90e792f
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SHA256
462062209acc090a567e2bd571acd1d52c19d0d80ee56da256a3c58aaf3b12e9
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SHA512
02cf3fc9f6196ed19fde5b223677c6a77cf04b7ce881716fc371a7f7d773d462e5794b39e8054127fd509c010a8887fbd3bc51f30b55990bfb99c4f255a2a8ab
Malware Config
Extracted
remcos
2.7.2 Pro
RemoteHost
rem1.camdvr.org:2404
rem16.hopto.org:2404
rem1666.hopto.org:2404
rem16.camdvr.org:2404
remmusic.freeddns.org:2404
sunwap1.ddns.net:2404
rem166.hopto.org:2404
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audio_folder
MicRecords
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audio_path
%AppData%
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
-
delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
false
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install_path
%AppData%
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keylog_crypt
false
-
keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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keylog_path
%AppData%
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mouse_option
false
-
mutex
hjtfjytfcyhnghncghc-AX8BPK
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screenshot_crypt
false
-
screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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startup_value
Remcos
-
take_screenshot_option
false
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take_screenshot_time
5
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take_screenshot_title
wikipedia;solitaire;
Signatures
-
Blocklisted process makes network request 3 IoCs
Processes:
mshta.exeflow pid process 22 4004 mshta.exe 26 4004 mshta.exe 29 4004 mshta.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
Pdf Attached.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Aunntan = "C:\\Users\\Public\\Libraries\\natnnuA.url" Pdf Attached.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
mshta.exepid process 4004 mshta.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
Pdf Attached.exedescription pid process target process PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe PID 568 wrote to memory of 4004 568 Pdf Attached.exe mshta.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Pdf Attached.exe"C:\Users\Admin\AppData\Local\Temp\Pdf Attached.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\mshta.exeC:\Windows\System32\mshta.exe2⤵
- Blocklisted process makes network request
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/568-114-0x0000000000590000-0x00000000006DA000-memory.dmpFilesize
1.3MB
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memory/568-116-0x0000000002430000-0x000000000244B000-memory.dmpFilesize
108KB
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memory/4004-119-0x0000000000000000-mapping.dmp
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memory/4004-121-0x0000000000E60000-0x0000000000E61000-memory.dmpFilesize
4KB
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memory/4004-120-0x0000000000DD0000-0x0000000000DD1000-memory.dmpFilesize
4KB
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memory/4004-123-0x0000000000D50000-0x0000000000D51000-memory.dmpFilesize
4KB
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memory/4004-122-0x0000000010540000-0x0000000010563000-memory.dmpFilesize
140KB
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memory/4004-124-0x0000000000400000-0x0000000000421000-memory.dmpFilesize
132KB