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Analysis
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max time kernel
148s -
max time network
145s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
03/02/2023, 19:17
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/1036-56-0x0000000007630000-0x00000000078CE000-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 1764 rdfghfgjkgoighjc.exe 1696 rdfghfgjkgoighjc.exe 608 rdfghfgjkgoighjc.exe -
Loads dropped DLL 1 IoCs
pid Process 1144 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe -
Adds Run key to start application 2 TTPs 10 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\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 Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\"" rdfghfgjkgoighjc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\"" rdfghfgjkgoighjc.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ rdfghfgjkgoighjc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\"" d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\"" d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\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 -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1036 set thread context of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1764 set thread context of 608 1764 rdfghfgjkgoighjc.exe 35 -
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 4 IoCs
pid Process 2032 powershell.exe 1720 powershell.exe 1764 rdfghfgjkgoighjc.exe 1764 rdfghfgjkgoighjc.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Token: SeDebugPrivilege 2032 powershell.exe Token: SeDebugPrivilege 1764 rdfghfgjkgoighjc.exe Token: SeDebugPrivilege 1720 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 608 rdfghfgjkgoighjc.exe -
Suspicious use of WriteProcessMemory 42 IoCs
description pid Process procid_target PID 1036 wrote to memory of 2032 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 1036 wrote to memory of 2032 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 1036 wrote to memory of 2032 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 1036 wrote to memory of 2032 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1036 wrote to memory of 1144 1036 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1144 wrote to memory of 1764 1144 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 1144 wrote to memory of 1764 1144 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 1144 wrote to memory of 1764 1144 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 1144 wrote to memory of 1764 1144 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 1764 wrote to memory of 1720 1764 rdfghfgjkgoighjc.exe 32 PID 1764 wrote to memory of 1720 1764 rdfghfgjkgoighjc.exe 32 PID 1764 wrote to memory of 1720 1764 rdfghfgjkgoighjc.exe 32 PID 1764 wrote to memory of 1720 1764 rdfghfgjkgoighjc.exe 32 PID 1764 wrote to memory of 1696 1764 rdfghfgjkgoighjc.exe 34 PID 1764 wrote to memory of 1696 1764 rdfghfgjkgoighjc.exe 34 PID 1764 wrote to memory of 1696 1764 rdfghfgjkgoighjc.exe 34 PID 1764 wrote to memory of 1696 1764 rdfghfgjkgoighjc.exe 34 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35 PID 1764 wrote to memory of 608 1764 rdfghfgjkgoighjc.exe 35
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:1036 -
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:2032
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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:1144 -
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:1764 -
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:1720
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C:\ProgramData\Remcos\rdfghfgjkgoighjc.exeC:\ProgramData\Remcos\rdfghfgjkgoighjc.exe4⤵
- Executes dropped EXE
PID:1696
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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:608
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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
MD51e049b90bb2e9c6ec311a312f4af1ae9
SHA12188b2865817fa12de95ac272c841aae2ab0f1ee
SHA2567e5de6b0b7b2a1123a0dc6309898e8bb0bbba20213917e98d14a1febefb8d9ad
SHA512868d99b967e847bb134a77509654f0b793b638bb7a7c93b9ded49f448597b17b23f74e24668812cd1962f4d5533730b9bf41c5979aa01216c026a29674b2d324
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Filesize
7KB
MD521eb7229dde310fab9cd2dbec6208123
SHA1df728df8c047ff7589d48aaa00c65cd88d0550c5
SHA2561aae2dda4016febd2765e64d20dd992319d388cc8a8690f1ae5f7984a4734dd3
SHA5126a72767944f6eb84b1564044eabd33c2aaa75297263dfa4aac8a1c60afddb3846ee10cd0d81739b36f3cb7be97f88f92a0b5223b61fa5bf36a82127fc0af75f2
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Filesize
7KB
MD5b359f4af5c88b1e237db9738415b7682
SHA1d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
SHA25653ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
SHA5126d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb