Analysis
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max time kernel
148s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
27-09-2022 02:49
Static task
static1
Behavioral task
behavioral1
Sample
b91fb7bbef1fe38b4f9e2b4315dc018c.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
b91fb7bbef1fe38b4f9e2b4315dc018c.exe
Resource
win10v2004-20220812-en
General
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Target
b91fb7bbef1fe38b4f9e2b4315dc018c.exe
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Size
6KB
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MD5
b91fb7bbef1fe38b4f9e2b4315dc018c
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SHA1
17670f20a892713eee445c1d46f450765ca58e7f
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SHA256
45c871fa970cb78e5c1832eb19201659c3961a1c688697774ee947ad70dbc2a7
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SHA512
2a67653cc76578bd917216d72550bdff58d86be4ccf58af88d95f4e9144b9d238f741ef7846597440c091cc9c9eea20a55532f7a375891b375afc60060d2b194
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SSDEEP
96:Ei6WXBXvOLseWYdY4ZY/8J6clhu96BzNt:Ei6EBXvOL3xJZY/8J6crA6D
Malware Config
Extracted
remcos
StarMoneyNew
185.252.178.35:41900
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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
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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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-6RGOTF
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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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
b91fb7bbef1fe38b4f9e2b4315dc018c.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation b91fb7bbef1fe38b4f9e2b4315dc018c.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
b91fb7bbef1fe38b4f9e2b4315dc018c.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cloud = "\"C:\\Users\\Admin\\AppData\\Roaming\\Adobe\\Cloud.exe\"" b91fb7bbef1fe38b4f9e2b4315dc018c.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
b91fb7bbef1fe38b4f9e2b4315dc018c.exedescription pid process target process PID 4408 set thread context of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe -
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
Processes:
powershell.exepid process 2776 powershell.exe 2776 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
b91fb7bbef1fe38b4f9e2b4315dc018c.exepowershell.exedescription pid process Token: SeDebugPrivilege 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe Token: SeDebugPrivilege 2776 powershell.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
b91fb7bbef1fe38b4f9e2b4315dc018c.exedescription pid process target process PID 4408 wrote to memory of 2776 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe powershell.exe PID 4408 wrote to memory of 2776 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe powershell.exe PID 4408 wrote to memory of 2776 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe powershell.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe PID 4408 wrote to memory of 2128 4408 b91fb7bbef1fe38b4f9e2b4315dc018c.exe b91fb7bbef1fe38b4f9e2b4315dc018c.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b91fb7bbef1fe38b4f9e2b4315dc018c.exe"C:\Users\Admin\AppData\Local\Temp\b91fb7bbef1fe38b4f9e2b4315dc018c.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\b91fb7bbef1fe38b4f9e2b4315dc018c.exeC:\Users\Admin\AppData\Local\Temp\b91fb7bbef1fe38b4f9e2b4315dc018c.exe2⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/2128-144-0x0000000000000000-mapping.dmp
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memory/2128-149-0x0000000000400000-0x000000000047F000-memory.dmpFilesize
508KB
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memory/2128-148-0x0000000000400000-0x000000000047F000-memory.dmpFilesize
508KB
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memory/2128-147-0x0000000000400000-0x000000000047F000-memory.dmpFilesize
508KB
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memory/2128-146-0x0000000000400000-0x000000000047F000-memory.dmpFilesize
508KB
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memory/2128-145-0x0000000000400000-0x000000000047F000-memory.dmpFilesize
508KB
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memory/2776-136-0x0000000005010000-0x0000000005638000-memory.dmpFilesize
6.2MB
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memory/2776-139-0x0000000005CE0000-0x0000000005CFE000-memory.dmpFilesize
120KB
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memory/2776-140-0x0000000007550000-0x0000000007BCA000-memory.dmpFilesize
6.5MB
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memory/2776-141-0x00000000061F0000-0x000000000620A000-memory.dmpFilesize
104KB
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memory/2776-138-0x00000000056B0000-0x0000000005716000-memory.dmpFilesize
408KB
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memory/2776-137-0x0000000005640000-0x00000000056A6000-memory.dmpFilesize
408KB
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memory/2776-135-0x00000000026F0000-0x0000000002726000-memory.dmpFilesize
216KB
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memory/2776-134-0x0000000000000000-mapping.dmp
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memory/4408-142-0x0000000006400000-0x0000000006492000-memory.dmpFilesize
584KB
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memory/4408-143-0x0000000006F40000-0x00000000074E4000-memory.dmpFilesize
5.6MB
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memory/4408-132-0x00000000005B0000-0x00000000005B8000-memory.dmpFilesize
32KB
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memory/4408-133-0x0000000005F80000-0x0000000005FA2000-memory.dmpFilesize
136KB