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Analysis
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max time kernel
151s -
max time network
181s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
03/02/2023, 19:15
Static task
static1
Behavioral task
behavioral1
Sample
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Resource
win10v2004-20220901-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/840-56-0x0000000005FD0000-0x000000000626E000-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 2000 rdfghfgjkgoighjc.exe 808 rdfghfgjkgoighjc.exe -
Loads dropped DLL 1 IoCs
pid Process 1508 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe -
Adds Run key to start application 2 TTPs 10 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\"" d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\"" rdfghfgjkgoighjc.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ rdfghfgjkgoighjc.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ rdfghfgjkgoighjc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\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 Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\"" d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 840 set thread context of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 2000 set thread context of 808 2000 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 1812 powershell.exe 1524 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe Token: SeDebugPrivilege 1812 powershell.exe Token: SeDebugPrivilege 2000 rdfghfgjkgoighjc.exe Token: SeDebugPrivilege 1524 powershell.exe -
Suspicious use of WriteProcessMemory 38 IoCs
description pid Process procid_target PID 840 wrote to memory of 1812 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 840 wrote to memory of 1812 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 840 wrote to memory of 1812 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 840 wrote to memory of 1812 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 28 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 840 wrote to memory of 1508 840 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 30 PID 1508 wrote to memory of 2000 1508 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 1508 wrote to memory of 2000 1508 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 1508 wrote to memory of 2000 1508 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 1508 wrote to memory of 2000 1508 d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe 31 PID 2000 wrote to memory of 1524 2000 rdfghfgjkgoighjc.exe 32 PID 2000 wrote to memory of 1524 2000 rdfghfgjkgoighjc.exe 32 PID 2000 wrote to memory of 1524 2000 rdfghfgjkgoighjc.exe 32 PID 2000 wrote to memory of 1524 2000 rdfghfgjkgoighjc.exe 32 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 rdfghfgjkgoighjc.exe 34 PID 2000 wrote to memory of 808 2000 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:840 -
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:1812
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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:1508 -
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:2000 -
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:1524
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C:\ProgramData\Remcos\rdfghfgjkgoighjc.exeC:\ProgramData\Remcos\rdfghfgjkgoighjc.exe4⤵
- Executes dropped EXE
- Adds Run key to start application
PID:808
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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
MD539414035d397b126344f8f39ccb075c2
SHA1fe1fc803dba2c360ff1f06261486abf8f3461202
SHA256e5da0ecfb223406c119cf0c80a9018b4eaf29d081f784f329cb425a9d2efef16
SHA5120c7413ce3a2419bd3f495709214320b401366408be47286a434045de9de01a3fd34483716f1d7b8f2cae8edfdea32ccf55f5b1f3cb03f3e5a687350c98b99688
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Filesize
7KB
MD521eb7229dde310fab9cd2dbec6208123
SHA1df728df8c047ff7589d48aaa00c65cd88d0550c5
SHA2561aae2dda4016febd2765e64d20dd992319d388cc8a8690f1ae5f7984a4734dd3
SHA5126a72767944f6eb84b1564044eabd33c2aaa75297263dfa4aac8a1c60afddb3846ee10cd0d81739b36f3cb7be97f88f92a0b5223b61fa5bf36a82127fc0af75f2
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Filesize
7KB
MD5b359f4af5c88b1e237db9738415b7682
SHA1d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
SHA25653ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
SHA5126d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb