exelastealer | 2c69cadc462068599979909d626794da99ee4a59a7bfe958c78ef37672571b80

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\AppData\\Local\\Temp\\yus4tdks45d\\SysHealth.exe\""	WinterSnos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\AppData\\Local\\Temp\\yus4tdks45d\\SysHealth.exe\""	SysHealth.exe

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos
Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.

Account Manipulation
T1098
Downloads MZ/PE file

Modifies Windows Firewall 2 TTPs 2 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2976	netsh.exe
4332	netsh.exe

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2c69cadc462068599979909d626794da99ee4a59a7bfe958c78ef37672571b80N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	DarkSnos.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	WinterSnos.exe

Clipboard Data 1 TTPs 2 IoCs

Adversaries may collect data stored in the clipboard from users copying information within or between applications.

collection

Clipboard Data

T1115

pid	Process
1272	cmd.exe
3724	powershell.exe

Deletes itself 1 IoCs

pid	Process
2396	well_c2.exe

Executes dropped EXE 5 IoCs

pid	Process
2136	DarkSnos.exe
4276	WinterSnos.exe
5080	well_c2.exe
2396	well_c2.exe
2872	SysHealth.exe

Loads dropped DLL 32 IoCs

pid	Process
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe
2396	well_c2.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SystemHealth = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\yus4tdks45d\\SysHealth.exe\""	WinterSnos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SystemHealth = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\yus4tdks45d\\SysHealth.exe\""	SysHealth.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs

Web Service

T1102

flow	ioc
39	discord.com
8	raw.githubusercontent.com
9	raw.githubusercontent.com
37	discord.com
38	discord.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
24	ip-api.com

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	WinterSnos.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	SysHealth.exe

Network Service Discovery 1 TTPs 2 IoCs

Attempt to gather information on host's network.

Network Service Discovery

T1046

pid	Process
400	cmd.exe
1460	ARP.EXE

Enumerates processes with tasklist 1 TTPs 4 IoCs

persistence privilege_escalation

Process Discovery

T1057

pid	Process
452	tasklist.exe
4620	tasklist.exe
2684	tasklist.exe
1384	tasklist.exe

Hide Artifacts: Hidden Files and Directories 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
1720	cmd.exe

UPX packed file 64 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0008000000023c3f-105.dat	upx
behavioral2/memory/2396-109-0x00007FFE58970000-0x00007FFE58DD5000-memory.dmp	upx
behavioral2/memory/2396-141-0x00007FFE6F480000-0x00007FFE6F48F000-memory.dmp	upx
behavioral2/memory/2396-145-0x00007FFE678C0000-0x00007FFE678CD000-memory.dmp	upx
behavioral2/memory/2396-151-0x00007FFE67310000-0x00007FFE6732E000-memory.dmp	upx
behavioral2/files/0x0008000000023c38-156.dat	upx
behavioral2/memory/2396-160-0x00007FFE588B0000-0x00007FFE58966000-memory.dmp	upx
behavioral2/files/0x0007000000023c4b-176.dat	upx
behavioral2/memory/2396-182-0x00007FFE66B00000-0x00007FFE66B1B000-memory.dmp	upx
behavioral2/memory/2396-187-0x00007FFE588B0000-0x00007FFE58966000-memory.dmp	upx
behavioral2/memory/2396-194-0x00007FFE590F0000-0x00007FFE5913D000-memory.dmp	upx
behavioral2/memory/2396-195-0x00007FFE672C0000-0x00007FFE672D4000-memory.dmp	upx
behavioral2/memory/2396-196-0x00007FFE57680000-0x00007FFE57E0A000-memory.dmp	upx
behavioral2/memory/2396-193-0x00007FFE57F30000-0x00007FFE582A4000-memory.dmp	upx
behavioral2/memory/2396-197-0x00007FFE5E600000-0x00007FFE5E637000-memory.dmp	upx
behavioral2/memory/2396-192-0x00007FFE5EC90000-0x00007FFE5ECAE000-memory.dmp	upx
behavioral2/memory/2396-191-0x00007FFE67570000-0x00007FFE6757A000-memory.dmp	upx
behavioral2/memory/2396-190-0x00007FFE638D0000-0x00007FFE638E1000-memory.dmp	upx
behavioral2/memory/2396-189-0x00007FFE66880000-0x00007FFE66899000-memory.dmp	upx
behavioral2/memory/2396-186-0x00007FFE66AE0000-0x00007FFE66AF6000-memory.dmp	upx
behavioral2/memory/2396-185-0x00007FFE672E0000-0x00007FFE6730E000-memory.dmp	upx
behavioral2/files/0x0009000000023ba5-184.dat	upx
behavioral2/memory/2396-181-0x00007FFE66CB0000-0x00007FFE66E1D000-memory.dmp	upx
behavioral2/memory/2396-180-0x00007FFE57E10000-0x00007FFE57F28000-memory.dmp	upx
behavioral2/files/0x0008000000023c3c-179.dat	upx
behavioral2/memory/2396-178-0x00007FFE67310000-0x00007FFE6732E000-memory.dmp	upx
behavioral2/memory/2396-175-0x00007FFE66B50000-0x00007FFE66B72000-memory.dmp	upx
behavioral2/files/0x0007000000023c4d-174.dat	upx
behavioral2/memory/2396-173-0x00007FFE66C70000-0x00007FFE66C85000-memory.dmp	upx
behavioral2/files/0x000a000000023b82-171.dat	upx
behavioral2/memory/2396-170-0x00007FFE66C90000-0x00007FFE66CA4000-memory.dmp	upx
behavioral2/memory/2396-169-0x00007FFE676A0000-0x00007FFE676B0000-memory.dmp	upx
behavioral2/memory/2396-168-0x00007FFE67380000-0x00007FFE67399000-memory.dmp	upx
behavioral2/files/0x0008000000023c3a-167.dat	upx
behavioral2/files/0x000b000000023b85-165.dat	upx
behavioral2/memory/2396-164-0x00007FFE672C0000-0x00007FFE672D4000-memory.dmp	upx
behavioral2/files/0x000a000000023b7c-163.dat	upx
behavioral2/memory/2396-162-0x00007FFE57F30000-0x00007FFE582A4000-memory.dmp	upx
behavioral2/memory/2396-159-0x00007FFE58970000-0x00007FFE58DD5000-memory.dmp	upx
behavioral2/files/0x0008000000023c36-158.dat	upx
behavioral2/memory/2396-155-0x00007FFE672E0000-0x00007FFE6730E000-memory.dmp	upx
behavioral2/files/0x000e000000023b96-154.dat	upx
behavioral2/memory/2396-153-0x00007FFE66CB0000-0x00007FFE66E1D000-memory.dmp	upx
behavioral2/files/0x0007000000023c4a-152.dat	upx
behavioral2/files/0x000a000000023b8f-150.dat	upx
behavioral2/memory/2396-149-0x00007FFE67330000-0x00007FFE6735C000-memory.dmp	upx
behavioral2/files/0x000a000000023b83-148.dat	upx
behavioral2/memory/2396-147-0x00007FFE67360000-0x00007FFE67379000-memory.dmp	upx
behavioral2/files/0x000a000000023b7d-146.dat	upx
behavioral2/memory/2396-144-0x00007FFE67380000-0x00007FFE67399000-memory.dmp	upx
behavioral2/files/0x0009000000023c40-143.dat	upx
behavioral2/files/0x000b000000023b87-142.dat	upx
behavioral2/memory/2396-140-0x00007FFE673A0000-0x00007FFE673C4000-memory.dmp	upx
behavioral2/files/0x0008000000023b9f-139.dat	upx
behavioral2/files/0x000b000000023b86-135.dat	upx
behavioral2/files/0x000a000000023b84-133.dat	upx
behavioral2/files/0x000a000000023b81-130.dat	upx
behavioral2/files/0x000a000000023b7f-129.dat	upx
behavioral2/files/0x0008000000023c3d-123.dat	upx
behavioral2/files/0x0008000000023c37-120.dat	upx
behavioral2/files/0x000a000000023b80-118.dat	upx
behavioral2/memory/2396-214-0x00007FFE66B50000-0x00007FFE66B72000-memory.dmp	upx
behavioral2/memory/2396-249-0x00007FFE66AD0000-0x00007FFE66ADD000-memory.dmp	upx
behavioral2/memory/2396-266-0x00007FFE66AE0000-0x00007FFE66AF6000-memory.dmp	upx

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
1720	sc.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Detects Pyinstaller 1 IoCs

pyinstaller

resource	yara_rule
behavioral2/files/0x000a000000023b75-47.dat	pyinstaller

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 9 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

Permission Groups Discovery: Local Groups 1 TTPs
Attempt to find local system groups and permission settings.
discovery

Local Groups
T1069.001

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SysHealth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2c69cadc462068599979909d626794da99ee4a59a7bfe958c78ef37672571b80N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DarkSnos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WinterSnos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

Internet Connection Discovery

T1016.001

pid	Process
2292	PING.EXE

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

Wi-Fi Discovery

T1016.002

pid	Process
4208	cmd.exe
880	netsh.exe

System Network Connections Discovery 1 TTPs 1 IoCs

Attempt to get a listing of network connections.

System Network Connections Discovery

T1049

pid	Process
3912	NETSTAT.EXE

Collects information from the system 1 TTPs 1 IoCs

Uses WMIC.exe to find detailed system information.

Data from Local System

T1005

pid	Process
3164	WMIC.exe

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

Command and Scripting Interpreter

T1059

pid	Process
3828	ipconfig.exe
3912	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

pid	Process
4492	systeminfo.exe

Runs net.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2292	PING.EXE

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
4276	WinterSnos.exe
4276	WinterSnos.exe
2872	SysHealth.exe
2872	SysHealth.exe
3724	powershell.exe
3724	powershell.exe
3724	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2136	DarkSnos.exe
Token: SeIncreaseQuotaPrivilege	2272	WMIC.exe
Token: SeSecurityPrivilege	2272	WMIC.exe
Token: SeTakeOwnershipPrivilege	2272	WMIC.exe
Token: SeLoadDriverPrivilege	2272	WMIC.exe
Token: SeSystemProfilePrivilege	2272	WMIC.exe
Token: SeSystemtimePrivilege	2272	WMIC.exe
Token: SeProfSingleProcessPrivilege	2272	WMIC.exe
Token: SeIncBasePriorityPrivilege	2272	WMIC.exe
Token: SeCreatePagefilePrivilege	2272	WMIC.exe
Token: SeBackupPrivilege	2272	WMIC.exe
Token: SeRestorePrivilege	2272	WMIC.exe
Token: SeShutdownPrivilege	2272	WMIC.exe
Token: SeDebugPrivilege	2272	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2272	WMIC.exe
Token: SeRemoteShutdownPrivilege	2272	WMIC.exe
Token: SeUndockPrivilege	2272	WMIC.exe
Token: SeManageVolumePrivilege	2272	WMIC.exe
Token: 33	2272	WMIC.exe
Token: 34	2272	WMIC.exe
Token: 35	2272	WMIC.exe
Token: 36	2272	WMIC.exe
Token: SeDebugPrivilege	452	tasklist.exe
Token: SeIncreaseQuotaPrivilege	2272	WMIC.exe
Token: SeSecurityPrivilege	2272	WMIC.exe
Token: SeTakeOwnershipPrivilege	2272	WMIC.exe
Token: SeLoadDriverPrivilege	2272	WMIC.exe
Token: SeSystemProfilePrivilege	2272	WMIC.exe
Token: SeSystemtimePrivilege	2272	WMIC.exe
Token: SeProfSingleProcessPrivilege	2272	WMIC.exe
Token: SeIncBasePriorityPrivilege	2272	WMIC.exe
Token: SeCreatePagefilePrivilege	2272	WMIC.exe
Token: SeBackupPrivilege	2272	WMIC.exe
Token: SeRestorePrivilege	2272	WMIC.exe
Token: SeShutdownPrivilege	2272	WMIC.exe
Token: SeDebugPrivilege	2272	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2272	WMIC.exe
Token: SeRemoteShutdownPrivilege	2272	WMIC.exe
Token: SeUndockPrivilege	2272	WMIC.exe
Token: SeManageVolumePrivilege	2272	WMIC.exe
Token: 33	2272	WMIC.exe
Token: 34	2272	WMIC.exe
Token: 35	2272	WMIC.exe
Token: 36	2272	WMIC.exe
Token: SeDebugPrivilege	4620	tasklist.exe
Token: SeDebugPrivilege	2684	tasklist.exe
Token: SeDebugPrivilege	3724	powershell.exe
Token: SeIncreaseQuotaPrivilege	3164	WMIC.exe
Token: SeSecurityPrivilege	3164	WMIC.exe
Token: SeTakeOwnershipPrivilege	3164	WMIC.exe
Token: SeLoadDriverPrivilege	3164	WMIC.exe
Token: SeSystemProfilePrivilege	3164	WMIC.exe
Token: SeSystemtimePrivilege	3164	WMIC.exe
Token: SeProfSingleProcessPrivilege	3164	WMIC.exe
Token: SeIncBasePriorityPrivilege	3164	WMIC.exe
Token: SeCreatePagefilePrivilege	3164	WMIC.exe
Token: SeBackupPrivilege	3164	WMIC.exe
Token: SeRestorePrivilege	3164	WMIC.exe
Token: SeShutdownPrivilege	3164	WMIC.exe
Token: SeDebugPrivilege	3164	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3164	WMIC.exe
Token: SeRemoteShutdownPrivilege	3164	WMIC.exe
Token: SeUndockPrivilege	3164	WMIC.exe
Token: SeManageVolumePrivilege	3164	WMIC.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4652 wrote to memory of 4800	4652	2c69cadc462068599979909d626794da99ee4a59a7bfe958c78ef37672571b80N.exe	83
PID 4652 wrote to memory of 4800	4652	2c69cadc462068599979909d626794da99ee4a59a7bfe958c78ef37672571b80N.exe	83
PID 4652 wrote to memory of 4800	4652	2c69cadc462068599979909d626794da99ee4a59a7bfe958c78ef37672571b80N.exe	83
PID 4652 wrote to memory of 2136	4652	2c69cadc462068599979909d626794da99ee4a59a7bfe958c78ef37672571b80N.exe	85
PID 4652 wrote to memory of 2136	4652	2c69cadc462068599979909d626794da99ee4a59a7bfe958c78ef37672571b80N.exe	85
PID 4652 wrote to memory of 2136	4652	2c69cadc462068599979909d626794da99ee4a59a7bfe958c78ef37672571b80N.exe	85
PID 4800 wrote to memory of 3412	4800	cmd.exe	87
PID 4800 wrote to memory of 3412	4800	cmd.exe	87
PID 4800 wrote to memory of 3412	4800	cmd.exe	87
PID 2136 wrote to memory of 4276	2136	DarkSnos.exe	89
PID 2136 wrote to memory of 4276	2136	DarkSnos.exe	89
PID 2136 wrote to memory of 4276	2136	DarkSnos.exe	89
PID 4276 wrote to memory of 4480	4276	WinterSnos.exe	90
PID 4276 wrote to memory of 4480	4276	WinterSnos.exe	90
PID 4276 wrote to memory of 4480	4276	WinterSnos.exe	90
PID 2136 wrote to memory of 5080	2136	DarkSnos.exe	92
PID 2136 wrote to memory of 5080	2136	DarkSnos.exe	92
PID 4480 wrote to memory of 2292	4480	cmd.exe	93
PID 4480 wrote to memory of 2292	4480	cmd.exe	93
PID 4480 wrote to memory of 2292	4480	cmd.exe	93
PID 5080 wrote to memory of 2396	5080	well_c2.exe	94
PID 5080 wrote to memory of 2396	5080	well_c2.exe	94
PID 4480 wrote to memory of 2872	4480	cmd.exe	95
PID 4480 wrote to memory of 2872	4480	cmd.exe	95
PID 4480 wrote to memory of 2872	4480	cmd.exe	95
PID 2396 wrote to memory of 2972	2396	well_c2.exe	96
PID 2396 wrote to memory of 2972	2396	well_c2.exe	96
PID 2396 wrote to memory of 4636	2396	well_c2.exe	98
PID 2396 wrote to memory of 4636	2396	well_c2.exe	98
PID 2396 wrote to memory of 2144	2396	well_c2.exe	99
PID 2396 wrote to memory of 2144	2396	well_c2.exe	99
PID 4636 wrote to memory of 2272	4636	cmd.exe	104
PID 4636 wrote to memory of 2272	4636	cmd.exe	104
PID 2144 wrote to memory of 452	2144	cmd.exe	105
PID 2144 wrote to memory of 452	2144	cmd.exe	105
PID 2396 wrote to memory of 1720	2396	well_c2.exe	108
PID 2396 wrote to memory of 1720	2396	well_c2.exe	108
PID 1720 wrote to memory of 224	1720	cmd.exe	110
PID 1720 wrote to memory of 224	1720	cmd.exe	110
PID 2396 wrote to memory of 3872	2396	well_c2.exe	111
PID 2396 wrote to memory of 3872	2396	well_c2.exe	111
PID 3872 wrote to memory of 4620	3872	cmd.exe	113
PID 3872 wrote to memory of 4620	3872	cmd.exe	113
PID 2396 wrote to memory of 4260	2396	well_c2.exe	116
PID 2396 wrote to memory of 4260	2396	well_c2.exe	116
PID 2396 wrote to memory of 5100	2396	well_c2.exe	117
PID 2396 wrote to memory of 5100	2396	well_c2.exe	117
PID 2396 wrote to memory of 1848	2396	well_c2.exe	118
PID 2396 wrote to memory of 1848	2396	well_c2.exe	118
PID 2396 wrote to memory of 1272	2396	well_c2.exe	119
PID 2396 wrote to memory of 1272	2396	well_c2.exe	119
PID 1272 wrote to memory of 3724	1272	cmd.exe	124
PID 1272 wrote to memory of 3724	1272	cmd.exe	124
PID 4260 wrote to memory of 4152	4260	cmd.exe	125
PID 4260 wrote to memory of 4152	4260	cmd.exe	125
PID 4152 wrote to memory of 2964	4152	cmd.exe	126
PID 4152 wrote to memory of 2964	4152	cmd.exe	126
PID 1848 wrote to memory of 2684	1848	cmd.exe	127
PID 1848 wrote to memory of 2684	1848	cmd.exe	127
PID 5100 wrote to memory of 4424	5100	cmd.exe	128
PID 5100 wrote to memory of 4424	5100	cmd.exe	128
PID 4424 wrote to memory of 1620	4424	cmd.exe	129
PID 4424 wrote to memory of 1620	4424	cmd.exe	129
PID 2396 wrote to memory of 400	2396	well_c2.exe	130

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
224	attrib.exe

C:\Users\Admin\AppData\Local\Temp\2c69cadc462068599979909d626794da99ee4a59a7bfe958c78ef37672571b80N.exe
"C:\Users\Admin\AppData\Local\Temp\2c69cadc462068599979909d626794da99ee4a59a7bfe958c78ef37672571b80N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4652
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\grssfg.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4800
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3412
- C:\Users\Admin\AppData\Local\Temp\DarkSnos.exe
  "C:\Users\Admin\AppData\Local\Temp\DarkSnos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2136
- - C:\Users\Admin\AppData\Local\Temp\DONOTWATCH\WinterSnos.exe
    "C:\Users\Admin\AppData\Local\Temp\DONOTWATCH\WinterSnos.exe"
    3⤵
    - Modifies WinLogon for persistence
    - Checks computer location settings
    - Executes dropped EXE
    - Adds Run key to start application
    - Modifies WinLogon
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4276
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4480
    - - C:\Windows\SysWOW64\PING.EXE
        
        PING 127.0.0.1 -n 2
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:2292
    - - C:\Users\Admin\AppData\Local\Temp\yus4tdks45d\SysHealth.exe
        
        "C:\Users\Admin\AppData\Local\Temp\yus4tdks45d\SysHealth.exe"
        5⤵
        Modifies WinLogon for persistence
        Executes dropped EXE
        Adds Run key to start application
        Modifies WinLogon
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:2872
- - C:\Users\Admin\AppData\Local\Temp\DONOTWATCH\well_c2.exe
    "C:\Users\Admin\AppData\Local\Temp\DONOTWATCH\well_c2.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:5080
  - - C:\Users\Admin\AppData\Local\Temp\DONOTWATCH\well_c2.exe
      "C:\Users\Admin\AppData\Local\Temp\DONOTWATCH\well_c2.exe"
      4⤵
      Deletes itself
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:2396
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "ver"
        5⤵
        
        PID:2972
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "wmic csproduct get uuid"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4636
      - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic csproduct get uuid
        6⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:2272
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "tasklist"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2144
      - C:\Windows\system32\tasklist.exe
        
        tasklist
        6⤵
        Enumerates processes with tasklist
        Suspicious use of AdjustPrivilegeToken
        
        PID:452
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "attrib +h +s "C:\Users\Admin\AppData\Local\WinServices\servises.exe""
        5⤵
        Hide Artifacts: Hidden Files and Directories
        Suspicious use of WriteProcessMemory
        
        PID:1720
      - C:\Windows\system32\attrib.exe
        
        attrib +h +s "C:\Users\Admin\AppData\Local\WinServices\servises.exe"
        6⤵
        Views/modifies file attributes
        
        PID:224
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "tasklist"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3872
      - C:\Windows\system32\tasklist.exe
        
        tasklist
        6⤵
        Enumerates processes with tasklist
        Suspicious use of AdjustPrivilegeToken
        
        PID:4620
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "cmd.exe /c chcp"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4260
      - C:\Windows\system32\cmd.exe
        
        cmd.exe /c chcp
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:4152
        
        C:\Windows\system32\chcp.com
        
        chcp
        7⤵
        
        PID:2964
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "cmd.exe /c chcp"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:5100
      - C:\Windows\system32\cmd.exe
        
        cmd.exe /c chcp
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:4424
        
        C:\Windows\system32\chcp.com
        
        chcp
        7⤵
        
        PID:1620
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "tasklist /FO LIST"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1848
      - C:\Windows\system32\tasklist.exe
        
        tasklist /FO LIST
        6⤵
        Enumerates processes with tasklist
        Suspicious use of AdjustPrivilegeToken
        
        PID:2684
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "powershell.exe Get-Clipboard"
        5⤵
        Clipboard Data
        Suspicious use of WriteProcessMemory
        
        PID:1272
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell.exe Get-Clipboard
        6⤵
        Clipboard Data
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3724
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "echo ####System Information#### & systeminfo & echo ####OS Version#### & ver & echo ####Hostname#### & hostname & echo ####Environment Variable#### & set & echo ####Logical Disk#### & wmic logicaldisk get caption,description,providername & echo ####Net User Info#### & net user & echo ####Online User#### & query user & echo ####Local Group#### & net localgroup & echo ####Administrators Info#### & net localgroup administrators & echo ####Guest User Info#### & net user guest & echo ####Administrator User Info#### & net user administrator & echo ####Startup Info#### & wmic startup get caption,command & echo ####Tasklist#### & tasklist /svc & echo ####Ipconfig#### & ipconfig/all & echo ####Hosts#### & type C:\WINDOWS\System32\drivers\etc\hosts & echo ####Route Table#### & route print & echo ####Arp Info#### & arp -a & echo ####Netstat#### & netstat -ano & echo ####Service Info#### & sc query type= service state= all & echo ####Firewallinfo#### & netsh firewall show state & netsh firewall show config"
        5⤵
        Network Service Discovery
        
        PID:400
      - C:\Windows\system32\systeminfo.exe
        
        systeminfo
        6⤵
        Gathers system information
        
        PID:4492
      - C:\Windows\system32\HOSTNAME.EXE
        
        hostname
        6⤵
        
        PID:4712
      - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic logicaldisk get caption,description,providername
        6⤵
        Collects information from the system
        Suspicious use of AdjustPrivilegeToken
        
        PID:3164
      - C:\Windows\system32\net.exe
        
        net user
        6⤵
        
        PID:5072
        
        C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 user
        7⤵
        
        PID:1444
      - C:\Windows\system32\query.exe
        
        query user
        6⤵
        
        PID:4168
        
        C:\Windows\system32\quser.exe
        
        "C:\Windows\system32\quser.exe"
        7⤵
        
        PID:3396
      - C:\Windows\system32\net.exe
        
        net localgroup
        6⤵
        
        PID:5016
        
        C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 localgroup
        7⤵
        
        PID:712
      - C:\Windows\system32\net.exe
        
        net localgroup administrators
        6⤵
        
        PID:2624
        
        C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 localgroup administrators
        7⤵
        
        PID:3448
      - C:\Windows\system32\net.exe
        
        net user guest
        6⤵
        
        PID:2376
        
        C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 user guest
        7⤵
        
        PID:2792
      - C:\Windows\system32\net.exe
        
        net user administrator
        6⤵
        
        PID:1448
        
        C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 user administrator
        7⤵
        
        PID:1496
      - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic startup get caption,command
        6⤵
        
        PID:1372
      - C:\Windows\system32\tasklist.exe
        
        tasklist /svc
        6⤵
        Enumerates processes with tasklist
        
        PID:1384
      - C:\Windows\system32\ipconfig.exe
        
        ipconfig /all
        6⤵
        Gathers network information
        
        PID:3828
      - C:\Windows\system32\ROUTE.EXE
        
        route print
        6⤵
        
        PID:1504
      - C:\Windows\system32\ARP.EXE
        
        arp -a
        6⤵
        Network Service Discovery
        
        PID:1460
      - C:\Windows\system32\NETSTAT.EXE
        
        netstat -ano
        6⤵
        System Network Connections Discovery
        Gathers network information
        
        PID:3912
      - C:\Windows\system32\sc.exe
        
        sc query type= service state= all
        6⤵
        Launches sc.exe
        
        PID:1720
      - C:\Windows\system32\netsh.exe
        
        netsh firewall show state
        6⤵
        Modifies Windows Firewall
        Event Triggered Execution: Netsh Helper DLL
        
        PID:4332
      - C:\Windows\system32\netsh.exe
        
        netsh firewall show config
        6⤵
        Modifies Windows Firewall
        Event Triggered Execution: Netsh Helper DLL
        
        PID:2976
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "netsh wlan show profiles"
        5⤵
        System Network Configuration Discovery: Wi-Fi Discovery
        
        PID:4208
      - C:\Windows\system32\netsh.exe
        
        netsh wlan show profiles
        6⤵
        Event Triggered Execution: Netsh Helper DLL
        System Network Configuration Discovery: Wi-Fi Discovery
        
        PID:880
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "wmic csproduct get uuid"
        5⤵
        
        PID:2968
      - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic csproduct get uuid
        6⤵
        
        PID:620
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c "wmic csproduct get uuid"
        5⤵
        
        PID:2316
      - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic csproduct get uuid
        6⤵
        
        PID:776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Account Manipulation

T1098

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Account Manipulation

T1098

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Network Service Discovery

T1046

Permission Groups Discovery

T1069

Local Groups

T1069.001

Process Discovery

T1057

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery