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Analysis
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max time kernel
150s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
03/02/2023, 18:49
Static task
static1
Behavioral task
behavioral1
Sample
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Resource
win10v2004-20220812-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/2008-56-0x0000000007330000-0x00000000075CE000-memory.dmp family_purecrypter -
PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
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Executes dropped EXE 3 IoCs
pid Process 1080 rdfghfgjkgoighjc.exe 1748 rdfghfgjkgoighjc.exe 1872 rdfghfgjkgoighjc.exe -
Loads dropped DLL 1 IoCs
pid Process 924 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe -
Adds Run key to start application 2 TTPs 10 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\"" d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\"" d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ 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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\"" d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\"" rdfghfgjkgoighjc.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ rdfghfgjkgoighjc.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\"" rdfghfgjkgoighjc.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2008 set thread context of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 1080 set thread context of 1872 1080 rdfghfgjkgoighjc.exe 33 -
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 3 IoCs
pid Process 940 powershell.exe 1956 powershell.exe 1080 rdfghfgjkgoighjc.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Token: SeDebugPrivilege 940 powershell.exe Token: SeDebugPrivilege 1080 rdfghfgjkgoighjc.exe Token: SeDebugPrivilege 1956 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1872 rdfghfgjkgoighjc.exe -
Suspicious use of WriteProcessMemory 42 IoCs
description pid Process procid_target PID 2008 wrote to memory of 940 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 26 PID 2008 wrote to memory of 940 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 26 PID 2008 wrote to memory of 940 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 26 PID 2008 wrote to memory of 940 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 26 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 2008 wrote to memory of 924 2008 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 924 wrote to memory of 1080 924 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 29 PID 924 wrote to memory of 1080 924 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 29 PID 924 wrote to memory of 1080 924 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 29 PID 924 wrote to memory of 1080 924 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 29 PID 1080 wrote to memory of 1956 1080 rdfghfgjkgoighjc.exe 30 PID 1080 wrote to memory of 1956 1080 rdfghfgjkgoighjc.exe 30 PID 1080 wrote to memory of 1956 1080 rdfghfgjkgoighjc.exe 30 PID 1080 wrote to memory of 1956 1080 rdfghfgjkgoighjc.exe 30 PID 1080 wrote to memory of 1748 1080 rdfghfgjkgoighjc.exe 32 PID 1080 wrote to memory of 1748 1080 rdfghfgjkgoighjc.exe 32 PID 1080 wrote to memory of 1748 1080 rdfghfgjkgoighjc.exe 32 PID 1080 wrote to memory of 1748 1080 rdfghfgjkgoighjc.exe 32 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33 PID 1080 wrote to memory of 1872 1080 rdfghfgjkgoighjc.exe 33
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:2008 -
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:940
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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:924 -
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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1080 -
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:1956
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C:\ProgramData\Remcos\rdfghfgjkgoighjc.exeC:\ProgramData\Remcos\rdfghfgjkgoighjc.exe4⤵
- Executes dropped EXE
PID:1748
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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:1872
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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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Filesize
7KB
MD5b359f4af5c88b1e237db9738415b7682
SHA1d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
SHA25653ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
SHA5126d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize7KB
MD5b90126aef2c0f27ec479d24425e74323
SHA1d9558ca1f433d0b2c88e4b0224a06729bb316509
SHA256c8e6d79f8e269e2cafe08b93ede2a2435623045b427616266c45f170e4f3d368
SHA512058d632446fb4c3be1bde001160bc20fb38e4deff3da004d1754f3ea1797e0fabe5a692a9cc8fe664bb4cfc2a4f3c4c8a209e3407a56790201007b8296590e8a
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Filesize
7KB
MD5b359f4af5c88b1e237db9738415b7682
SHA1d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
SHA25653ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
SHA5126d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb
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Filesize
7KB
MD5b359f4af5c88b1e237db9738415b7682
SHA1d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
SHA25653ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
SHA5126d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb