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Analysis
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max time kernel
174s -
max time network
199s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
03/02/2023, 18:57
Static task
static1
Behavioral task
behavioral1
Sample
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Resource
win10v2004-20221111-en
General
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Target
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
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Size
7KB
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MD5
b359f4af5c88b1e237db9738415b7682
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SHA1
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
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SHA256
53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
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SHA512
6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb
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SSDEEP
96:xtEsKVeCVIP7bLp8LAn5c8aY1ej/kKV+J2qzNt:xUVVIP7bLrEOejcKYx
Malware Config
Extracted
remcos
RemoteHost
194.180.49.17:28282
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audio_folder
MicRecords
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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
rdfghfgjkgoighjc.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
true
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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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mouse_option
false
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mutex
Rmc-PC1DJ2
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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
Signatures
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Detect PureCrypter injector 1 IoCs
resource yara_rule behavioral1/memory/1988-56-0x0000000007450000-0x00000000076EE000-memory.dmp family_purecrypter -
PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
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Executes dropped EXE 2 IoCs
pid Process 928 rdfghfgjkgoighjc.exe 1984 rdfghfgjkgoighjc.exe -
Loads dropped DLL 1 IoCs
pid Process 1440 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe -
Adds Run key to start application 2 TTPs 10 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ rdfghfgjkgoighjc.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ rdfghfgjkgoighjc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\"" rdfghfgjkgoighjc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\"" rdfghfgjkgoighjc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\"" d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\"" d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\"" d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\"" rdfghfgjkgoighjc.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1988 set thread context of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 928 set thread context of 1984 928 rdfghfgjkgoighjc.exe 34 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 328 powershell.exe 912 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Token: SeDebugPrivilege 328 powershell.exe Token: SeDebugPrivilege 928 rdfghfgjkgoighjc.exe Token: SeDebugPrivilege 912 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1984 rdfghfgjkgoighjc.exe -
Suspicious use of WriteProcessMemory 38 IoCs
description pid Process procid_target PID 1988 wrote to memory of 328 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 1988 wrote to memory of 328 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 1988 wrote to memory of 328 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 1988 wrote to memory of 328 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1988 wrote to memory of 1440 1988 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1440 wrote to memory of 928 1440 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 1440 wrote to memory of 928 1440 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 1440 wrote to memory of 928 1440 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 1440 wrote to memory of 928 1440 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 928 wrote to memory of 912 928 rdfghfgjkgoighjc.exe 32 PID 928 wrote to memory of 912 928 rdfghfgjkgoighjc.exe 32 PID 928 wrote to memory of 912 928 rdfghfgjkgoighjc.exe 32 PID 928 wrote to memory of 912 928 rdfghfgjkgoighjc.exe 32 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34 PID 928 wrote to memory of 1984 928 rdfghfgjkgoighjc.exe 34
Processes
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C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe"C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1988 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:328
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C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exeC:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe2⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1440 -
C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe"C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:928 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:912
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C:\ProgramData\Remcos\rdfghfgjkgoighjc.exeC:\ProgramData\Remcos\rdfghfgjkgoighjc.exe4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:1984
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
7KB
MD5b359f4af5c88b1e237db9738415b7682
SHA1d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
SHA25653ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
SHA5126d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb
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Filesize
7KB
MD5b359f4af5c88b1e237db9738415b7682
SHA1d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
SHA25653ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
SHA5126d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb
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Filesize
7KB
MD5b359f4af5c88b1e237db9738415b7682
SHA1d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
SHA25653ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
SHA5126d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize7KB
MD585042a2e638cc250ab6e36896c1f3a30
SHA1ec0903a935fea6ae210cfadb4d352f8a50117a07
SHA256f9ecfff74c80c2f71e081caefdd55b858a461396917e37bf6e4d84bd15710b49
SHA512aa0286f02b19867add0230127a0dbdae27f19eb010b73fe0492eb54205bbcc48e46875a85e358497f2438dd287432ff54fce4a504436910d50bf97c98b80447f
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Filesize
7KB
MD521eb7229dde310fab9cd2dbec6208123
SHA1df728df8c047ff7589d48aaa00c65cd88d0550c5
SHA2561aae2dda4016febd2765e64d20dd992319d388cc8a8690f1ae5f7984a4734dd3
SHA5126a72767944f6eb84b1564044eabd33c2aaa75297263dfa4aac8a1c60afddb3846ee10cd0d81739b36f3cb7be97f88f92a0b5223b61fa5bf36a82127fc0af75f2
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Filesize
7KB
MD5b359f4af5c88b1e237db9738415b7682
SHA1d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
SHA25653ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
SHA5126d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb