Analysis
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max time kernel
150s -
max time network
159s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
28-12-2023 07:57
Behavioral task
behavioral1
Sample
d147fad9c249b2817d91ea77c88be2d4.exe
Resource
win7-20231215-en
General
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Target
d147fad9c249b2817d91ea77c88be2d4.exe
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Size
1.4MB
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MD5
d147fad9c249b2817d91ea77c88be2d4
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SHA1
522d1bfaecf5180732c361fce27117e68e2f1ac3
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SHA256
2ada77612f68d343b4bcf228680b62ec266d00475446059729ce9ab7c68a154b
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SHA512
9daba4ceb7f2c4d2b1943528402266fede9984a24d1435774be8f25159817de9a1374faf78aefd0e365aaba853bf319717360fb02ef36566073d6d770166247b
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SSDEEP
24576:/6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6ES:yY9UORVOM1jJHzaiape0hsABFRJch6Lm
Malware Config
Extracted
remcos
2.5.0 Pro
GRACED
thankyoulord.ddns.net:5050
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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
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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
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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
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mutex
Remcos-0S5XD9
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screenshot_crypt
false
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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
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take_screenshot_option
false
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take_screenshot_time
5
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take_screenshot_title
wikipedia;solitaire;
Signatures
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ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
Processes:
resource yara_rule behavioral1/memory/2080-9-0x00000000009B0000-0x00000000009DC000-memory.dmp rezer0 -
Executes dropped EXE 1 IoCs
Processes:
test.exepid process 2080 test.exe -
Loads dropped DLL 1 IoCs
Processes:
cmd.exepid process 2800 cmd.exe -
Processes:
resource yara_rule behavioral1/memory/1724-0-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral1/memory/1724-10-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral1/memory/1724-27-0x0000000000400000-0x00000000006F1000-memory.dmp upx -
Uses the VBS compiler for execution 1 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
test.exedescription pid process target process PID 2080 set thread context of 2628 2080 test.exe vbc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of WriteProcessMemory 23 IoCs
Processes:
d147fad9c249b2817d91ea77c88be2d4.execmd.exetest.exedescription pid process target process PID 1724 wrote to memory of 2800 1724 d147fad9c249b2817d91ea77c88be2d4.exe cmd.exe PID 1724 wrote to memory of 2800 1724 d147fad9c249b2817d91ea77c88be2d4.exe cmd.exe PID 1724 wrote to memory of 2800 1724 d147fad9c249b2817d91ea77c88be2d4.exe cmd.exe PID 1724 wrote to memory of 2800 1724 d147fad9c249b2817d91ea77c88be2d4.exe cmd.exe PID 2800 wrote to memory of 2080 2800 cmd.exe test.exe PID 2800 wrote to memory of 2080 2800 cmd.exe test.exe PID 2800 wrote to memory of 2080 2800 cmd.exe test.exe PID 2800 wrote to memory of 2080 2800 cmd.exe test.exe PID 2080 wrote to memory of 2856 2080 test.exe schtasks.exe PID 2080 wrote to memory of 2856 2080 test.exe schtasks.exe PID 2080 wrote to memory of 2856 2080 test.exe schtasks.exe PID 2080 wrote to memory of 2856 2080 test.exe schtasks.exe PID 2080 wrote to memory of 2628 2080 test.exe vbc.exe PID 2080 wrote to memory of 2628 2080 test.exe vbc.exe PID 2080 wrote to memory of 2628 2080 test.exe vbc.exe PID 2080 wrote to memory of 2628 2080 test.exe vbc.exe PID 2080 wrote to memory of 2628 2080 test.exe vbc.exe PID 2080 wrote to memory of 2628 2080 test.exe vbc.exe PID 2080 wrote to memory of 2628 2080 test.exe vbc.exe PID 2080 wrote to memory of 2628 2080 test.exe vbc.exe PID 2080 wrote to memory of 2628 2080 test.exe vbc.exe PID 2080 wrote to memory of 2628 2080 test.exe vbc.exe PID 2080 wrote to memory of 2628 2080 test.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d147fad9c249b2817d91ea77c88be2d4.exe"C:\Users\Admin\AppData\Local\Temp\d147fad9c249b2817d91ea77c88be2d4.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c test.exe2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\test.exetest.exe3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8DDE.tmp"4⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"{path}"4⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp8DDE.tmpFilesize
1KB
MD55e71b9b2e25164df20dac4cceff76168
SHA18b7bc6ed4f7bb168bb95fe1a97720fb34dbc99a2
SHA256445a86c7a8427bcbf32ea046f6088f9f31ceaac665fa4818d7bc7e57d0284287
SHA512396476eb1eb1ddeeba30584043e2b5fc04955fa78be6aebf97b13b85eb06b6c4c7c57a585d06d360c57c3d5af9253591ac720dc1f75c456af07e15226c34ae6e
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\Users\Admin\AppData\Local\Temp\test.exeFilesize
330KB
MD5261aa73f93c90dcec0c36a51cb9b5dee
SHA1b0c41e06cd2ded81706820423db40bf8fea2c957
SHA256ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54
SHA5127b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed
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memory/1724-10-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/1724-0-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/1724-27-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/2080-26-0x0000000073E70000-0x000000007455E000-memory.dmpFilesize
6.9MB
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memory/2080-5-0x00000000009E0000-0x0000000000A38000-memory.dmpFilesize
352KB
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memory/2080-6-0x0000000073E70000-0x000000007455E000-memory.dmpFilesize
6.9MB
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memory/2080-7-0x0000000004C10000-0x0000000004C50000-memory.dmpFilesize
256KB
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memory/2080-8-0x00000000003B0000-0x00000000003B8000-memory.dmpFilesize
32KB
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memory/2080-9-0x00000000009B0000-0x00000000009DC000-memory.dmpFilesize
176KB
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memory/2628-30-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-16-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-29-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-25-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-23-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-20-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-22-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmpFilesize
4KB
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memory/2628-21-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-19-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-18-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-17-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-28-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-31-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-32-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-33-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-35-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-37-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-39-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-41-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-43-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-45-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-47-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-49-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2628-51-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB