Analysis
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max time kernel
148s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
12-04-2024 01:30
Static task
static1
Behavioral task
behavioral1
Sample
b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe
Resource
win10v2004-20240226-en
General
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Target
b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe
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Size
910KB
-
MD5
783addabb1e7dcb48130649faaf852c7
-
SHA1
c87553da7df62530e9262b35930d6a15aff4949a
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SHA256
b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da
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SHA512
9f352fd443bd680a71ce1a4ece252baa81c2c293727d520ce57da93d461808f50be6c22f4a6f8e0a18f0857785b47f783f1f3cc6c41442275c12149e067b3c3b
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SSDEEP
24576:IsWW2f6w8r89u8TeWMkzIULsHTJMGoMzyc/VdK:IsT2fTC8BSWMkluMMzyctd
Malware Config
Extracted
remcos
RemoteHost
bignight.net:3363
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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-1XSDBO
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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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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 19 IoCs
Processes:
resource yara_rule behavioral2/memory/1528-39-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-44-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-49-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-51-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-54-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-52-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-55-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-57-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-105-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-106-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-107-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-112-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-113-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-119-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-120-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-125-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-126-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-131-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1528-133-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM -
Detects executables packed with SmartAssembly 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4312-8-0x000000000C350000-0x000000000C35C000-memory.dmp INDICATOR_EXE_Packed_SmartAssembly -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exedescription pid process target process PID 4312 set thread context of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exepowershell.exepid process 4288 powershell.exe 1340 powershell.exe 1340 powershell.exe 4288 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 1340 powershell.exe Token: SeDebugPrivilege 4288 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exepid process 1528 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exedescription pid process target process PID 4312 wrote to memory of 1340 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe powershell.exe PID 4312 wrote to memory of 1340 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe powershell.exe PID 4312 wrote to memory of 1340 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe powershell.exe PID 4312 wrote to memory of 4288 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe powershell.exe PID 4312 wrote to memory of 4288 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe powershell.exe PID 4312 wrote to memory of 4288 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe powershell.exe PID 4312 wrote to memory of 1948 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe schtasks.exe PID 4312 wrote to memory of 1948 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe schtasks.exe PID 4312 wrote to memory of 1948 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe schtasks.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe PID 4312 wrote to memory of 1528 4312 b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe"C:\Users\Admin\AppData\Local\Temp\b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4312 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1340 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\HFqduGIsFotY.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4288 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HFqduGIsFotY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9B84.tmp"2⤵
- Creates scheduled task(s)
PID:1948 -
C:\Users\Admin\AppData\Local\Temp\b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe"C:\Users\Admin\AppData\Local\Temp\b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da.exe"2⤵
- Suspicious use of SetWindowsHookEx
PID:1528
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
144B
MD583b186ad7ed3c4dfe70dfc529ebe5e3b
SHA121a85e3c7fe7d37a7e5e69aa901c0cbf543a9355
SHA256a9e1d1c5c5adf82ec0a4c4688dd228d4357b4222c434c5371b9bc50d4e259937
SHA512e28c763fb4f6d07e02a04e7eeb70bb067821d62514362420f3477480ba66fcc32be3db3fb5295e822890d4cabfd943cb06c0661fa5c0996900b7bc9a4aa1a4d0
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Filesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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Filesize
18KB
MD514140dcf30200324419f32b2da3a6e14
SHA15991540bd79b2f93dbac2a4eed99e4f7b281ecdd
SHA256a6bd150d9a3194f7ebf3b7aa14f191e8213ad77b2e6f10e5f156b579d9187088
SHA5120b22a272a049df7e0f2592dee9ca570e867a10948dfb6bf3a86ca71082ca957d1649066e87b0bfd5e1777cc8fc761a913d8f3c1a6f550dc25ff924c7d651b4f2
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD54261dfbd8420edb2cbe56ccb96f8c5b1
SHA118763e8e73f07110292fce297c0109bc28f08515
SHA256edff98cccbcc6cb4cc6a7aeef7f26531a63c1407734223e4a34724cb1022f01d
SHA51235277635da186b5faaec8d9599eff9e0abc6271bd1a4b359d3e56c49c4d74a63c5a1dcc6d3c04fa615ba763d88b7e7b87586e6df1f8e4c46b89161ccdff1436d