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Analysis
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max time kernel
141s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
05/10/2024, 02:57
Static task
static1
Behavioral task
behavioral1
Sample
c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe
Resource
win7-20240903-en
General
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Target
c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe
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Size
2.2MB
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MD5
4cc37ec50a6261f3a3165bf88fd8c4c4
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SHA1
471b3058cc49aad6189323676472deae6dee1170
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SHA256
c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4
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SHA512
99c52e6263afe7960bc59ed56a60ffa248524798338ff61010619129ad17237a9d8402f1b93fce824c9c5f23b0b39ba19db5926dd6bc31634f0c761256fd2e29
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SSDEEP
24576:YD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJjRHM:Yp7E+QrFUBgq2SnJM
Malware Config
Extracted
remcos
1.7 Pro
Host
213.183.58.19:4000
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audio_folder
audio
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audio_path
%AppData%
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audio_record_time
5
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connect_delay
0
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connect_interval
5
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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
true
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install_flag
false
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install_path
%AppData%
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keylog_crypt
true
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keylog_file
read.dat
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keylog_flag
false
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keylog_folder
CastC
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keylog_path
%AppData%
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mouse_option
false
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mutex
remcos_sccafsoidz
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screens
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screenshot_path
%AppData%
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screenshot_time
1
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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.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe -
Executes dropped EXE 2 IoCs
pid Process 4276 sbietrcl.exe 4440 sbietrcl.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe" c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4276 set thread context of 4440 4276 sbietrcl.exe 83 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sbietrcl.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sbietrcl.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
pid Process 5112 c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe 5112 c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe 5112 c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe 5112 c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe 5112 c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe 5112 c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe 4276 sbietrcl.exe 4276 sbietrcl.exe 4276 sbietrcl.exe 4276 sbietrcl.exe 4276 sbietrcl.exe 4276 sbietrcl.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 5112 c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe Token: SeDebugPrivilege 4276 sbietrcl.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4440 sbietrcl.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 5112 wrote to memory of 4276 5112 c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe 82 PID 5112 wrote to memory of 4276 5112 c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe 82 PID 5112 wrote to memory of 4276 5112 c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe 82 PID 4276 wrote to memory of 4440 4276 sbietrcl.exe 83 PID 4276 wrote to memory of 4440 4276 sbietrcl.exe 83 PID 4276 wrote to memory of 4440 4276 sbietrcl.exe 83 PID 4276 wrote to memory of 4440 4276 sbietrcl.exe 83 PID 4276 wrote to memory of 4440 4276 sbietrcl.exe 83 PID 4276 wrote to memory of 4440 4276 sbietrcl.exe 83 PID 4276 wrote to memory of 4440 4276 sbietrcl.exe 83 PID 4276 wrote to memory of 4440 4276 sbietrcl.exe 83 PID 4276 wrote to memory of 4440 4276 sbietrcl.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe"C:\Users\Admin\AppData\Local\Temp\c59d16493e4339aec1c817910af350618239980d4b663aa9ff3dfef9f99f6ae4.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5112 -
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4276 -
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:4440
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.2MB
MD56082774f8f613e84f851e9544debd2fd
SHA1c483952c20c44c7a3029f016debb866728dad584
SHA25635afa19d10e50b2e45ae7dadb87d740990be58ac8ce41754d7a0b931e93ea2bc
SHA512b4613b9100237e0bae21a59d2246dad868dcac2d9eb73a8539739ef30fd40db836dc8af547f3f6a4a50abe1824c819b5ed4bcd5ae0564cb8d67ff20fa17eeb73