darkcomet | c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339

Analysis

max time kernel
156s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2022 02:03

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General

Target

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Size

317KB
MD5

178b94a462503845831cd0a6c3e3b500
SHA1

99510e9b7abbfff7cc4097e51196ad801fc1d82d
SHA256

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339
SHA512

ee4ee70924bf2221de983527cbc3b6d10c2962d0f0f046efe523088bf51df0da0de0c5a8a56e8c6958167e32052201b789eeff2cc989d2333760e9549e0465cf
SSDEEP

6144:hzjAH9agPC3gLzeAyzhsv70s3QS8A7KQGNBZmUF4nHytzcc:xAdag1mAyzMxp8A7KQGNBZm3HOcc

Score

10^/10

darkcomet 24 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

127.0.0.1:1604

172.162.22.200:1604

remaxcheckings.no-ip.biz:1604

Mutex

DC_MUTEX-AT9WGLV

Attributes

InstallPath
MSDCSC\remaxcheckings.exe
gencode
WN5Nr6wiGseC
install
true
offline_keylogger
true
persistence
true
reg_key
remaxcheckings

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\MSDCSC\\remaxcheckings.exe"	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe

Modifies firewall policy service 2 TTPs 9 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

iexplore.exeremaxcheckings.exeiexplore.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	iexplore.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	iexplore.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	remaxcheckings.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	remaxcheckings.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	remaxcheckings.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	iexplore.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	iexplore.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	iexplore.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	iexplore.exe

Modifies security service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

iexplore.exeiexplore.exeremaxcheckings.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	iexplore.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	iexplore.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	remaxcheckings.exe

Windows security bypass 2 TTPs 6 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

iexplore.exeiexplore.exeremaxcheckings.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	remaxcheckings.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	remaxcheckings.exe

Disables RegEdit via registry modification 3 IoCs

evasion

Processes:

iexplore.exeiexplore.exeremaxcheckings.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	remaxcheckings.exe

Disables Task Manager via registry modification
evasion
Executes dropped EXE 3 IoCs

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exeremaxcheckings.exeremaxcheckings.exe

pid process

3972 c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
628 remaxcheckings.exe
1800 remaxcheckings.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

3596 attrib.exe
1908 attrib.exe

pid	process
3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
628	remaxcheckings.exe
1800	remaxcheckings.exe

pid	process
3596	attrib.exe
1908	attrib.exe

UPX packed file 7 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3972-137-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3972-139-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3972-140-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3972-141-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3972-143-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3972-156-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1800-163-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

remaxcheckings.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	remaxcheckings.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	remaxcheckings.exe

Adds Run key to start application 2 TTPs 7 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exec4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exeiexplore.exeremaxcheckings.exeremaxcheckings.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\help = "C:\\Users\\Admin\\AppData\\Roaming\\InstallDir\\help.exe"	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remaxcheckings = "C:\\MSDCSC\\remaxcheckings.exe"	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remaxcheckings = "C:\\MSDCSC\\remaxcheckings.exe"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\help = "C:\\Users\\Admin\\AppData\\Roaming\\InstallDir\\help.exe"	remaxcheckings.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\help = "C:\\Users\\Admin\\AppData\\Roaming\\InstallDir\\help.exe"	remaxcheckings.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remaxcheckings = "C:\\MSDCSC\\remaxcheckings.exe"	remaxcheckings.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\help = "C:\\Users\\Admin\\AppData\\Roaming\\InstallDir\\help.exe"	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exeremaxcheckings.exe

description	pid	process	target process
PID 2180 set thread context of 4108	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 2180 set thread context of 3972	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 628 set thread context of 3960	628	remaxcheckings.exe	iexplore.exe
PID 628 set thread context of 1800	628	remaxcheckings.exe	remaxcheckings.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exeremaxcheckings.exe

pid	process
2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
628	remaxcheckings.exe
628	remaxcheckings.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

4108 iexplore.exe

pid	process
4108	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exeiexplore.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeIncreaseQuotaPrivilege	4108	iexplore.exe
Token: SeSecurityPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeSecurityPrivilege	4108	iexplore.exe
Token: SeTakeOwnershipPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeTakeOwnershipPrivilege	4108	iexplore.exe
Token: SeLoadDriverPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeLoadDriverPrivilege	4108	iexplore.exe
Token: SeSystemProfilePrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeSystemProfilePrivilege	4108	iexplore.exe
Token: SeSystemtimePrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeSystemtimePrivilege	4108	iexplore.exe
Token: SeProfSingleProcessPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeProfSingleProcessPrivilege	4108	iexplore.exe
Token: SeIncBasePriorityPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeIncBasePriorityPrivilege	4108	iexplore.exe
Token: SeCreatePagefilePrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeCreatePagefilePrivilege	4108	iexplore.exe
Token: SeBackupPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeBackupPrivilege	4108	iexplore.exe
Token: SeRestorePrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeRestorePrivilege	4108	iexplore.exe
Token: SeShutdownPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeShutdownPrivilege	4108	iexplore.exe
Token: SeDebugPrivilege	4108	iexplore.exe
Token: SeDebugPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeSystemEnvironmentPrivilege	4108	iexplore.exe
Token: SeSystemEnvironmentPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeChangeNotifyPrivilege	4108	iexplore.exe
Token: SeChangeNotifyPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeRemoteShutdownPrivilege	4108	iexplore.exe
Token: SeRemoteShutdownPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeUndockPrivilege	4108	iexplore.exe
Token: SeUndockPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeManageVolumePrivilege	4108	iexplore.exe
Token: SeManageVolumePrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeImpersonatePrivilege	4108	iexplore.exe
Token: SeImpersonatePrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeCreateGlobalPrivilege	4108	iexplore.exe
Token: SeCreateGlobalPrivilege	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: 33	4108	iexplore.exe
Token: 33	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: 34	4108	iexplore.exe
Token: 34	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: 35	4108	iexplore.exe
Token: 35	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: 36	4108	iexplore.exe
Token: 36	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeIncreaseQuotaPrivilege	3960	iexplore.exe
Token: SeSecurityPrivilege	3960	iexplore.exe
Token: SeTakeOwnershipPrivilege	3960	iexplore.exe
Token: SeLoadDriverPrivilege	3960	iexplore.exe
Token: SeSystemProfilePrivilege	3960	iexplore.exe
Token: SeSystemtimePrivilege	3960	iexplore.exe
Token: SeProfSingleProcessPrivilege	3960	iexplore.exe
Token: SeIncBasePriorityPrivilege	3960	iexplore.exe
Token: SeCreatePagefilePrivilege	3960	iexplore.exe
Token: SeBackupPrivilege	3960	iexplore.exe
Token: SeRestorePrivilege	3960	iexplore.exe
Token: SeShutdownPrivilege	3960	iexplore.exe
Token: SeDebugPrivilege	3960	iexplore.exe
Token: SeSystemEnvironmentPrivilege	3960	iexplore.exe
Token: SeChangeNotifyPrivilege	3960	iexplore.exe
Token: SeRemoteShutdownPrivilege	3960	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

4108 iexplore.exe

pid	process
4108	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.execmd.exenet.exeiexplore.exec4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe

description	pid	process	target process
PID 2180 wrote to memory of 2516	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 2180 wrote to memory of 2516	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 2180 wrote to memory of 2516	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 2180 wrote to memory of 4108	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 2180 wrote to memory of 4108	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 2180 wrote to memory of 4108	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 2180 wrote to memory of 4108	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 2180 wrote to memory of 4108	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 2180 wrote to memory of 4108	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 2180 wrote to memory of 4108	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 2180 wrote to memory of 4108	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 2516 wrote to memory of 2080	2516	cmd.exe	net.exe
PID 2516 wrote to memory of 2080	2516	cmd.exe	net.exe
PID 2516 wrote to memory of 2080	2516	cmd.exe	net.exe
PID 2080 wrote to memory of 5020	2080	net.exe	net1.exe
PID 2080 wrote to memory of 5020	2080	net.exe	net1.exe
PID 2080 wrote to memory of 5020	2080	net.exe	net1.exe
PID 2180 wrote to memory of 3972	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 2180 wrote to memory of 3972	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 2180 wrote to memory of 3972	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 2180 wrote to memory of 3972	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 2180 wrote to memory of 3972	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 2180 wrote to memory of 3972	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 2180 wrote to memory of 3972	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 2180 wrote to memory of 3972	2180	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 4108 wrote to memory of 4992	4108	iexplore.exe	notepad.exe
PID 3972 wrote to memory of 4808	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 3972 wrote to memory of 4808	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 3972 wrote to memory of 4808	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 3972 wrote to memory of 3224	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 3972 wrote to memory of 3224	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 3972 wrote to memory of 3224	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 3972 wrote to memory of 3240	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 3972 wrote to memory of 3240	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 3972 wrote to memory of 3240	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 3972 wrote to memory of 3240	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 3972 wrote to memory of 3240	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 3972 wrote to memory of 3240	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 3972 wrote to memory of 3240	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 3972 wrote to memory of 3240	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 3972 wrote to memory of 3240	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 3972 wrote to memory of 3240	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 3972 wrote to memory of 3240	3972	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

Processes:

remaxcheckings.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	remaxcheckings.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	remaxcheckings.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	remaxcheckings.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1908 attrib.exe
3596 attrib.exe

pid	process
1908	attrib.exe
3596	attrib.exe

C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
"C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2180

C:\Windows\SysWOW64\cmd.exe
/c net stop MpsSvc
2⤵
- Suspicious use of WriteProcessMemory
PID:2516

C:\Windows\SysWOW64\net.exe
net stop MpsSvc
3⤵
- Suspicious use of WriteProcessMemory
PID:2080

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop MpsSvc
4⤵
PID:5020

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
2⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4108

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:4992

C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3972

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe" +s +h
3⤵
PID:4808

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe" +s +h
4⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1908

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
PID:3224

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
4⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3596

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:3240

C:\MSDCSC\remaxcheckings.exe
"C:\MSDCSC\remaxcheckings.exe"
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
PID:628

C:\Windows\SysWOW64\cmd.exe
/c net stop MpsSvc
4⤵
PID:3932

C:\Windows\SysWOW64\net.exe
net stop MpsSvc
5⤵
PID:2868

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop MpsSvc
6⤵
PID:380

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
4⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Suspicious use of AdjustPrivilegeToken
PID:3960

C:\MSDCSC\remaxcheckings.exe
C:\MSDCSC\remaxcheckings.exe
4⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- System policy modification
PID:1800

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Modify Existing Service

T1031

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Disabling Security Tools

T1089

Hidden Files and Directories

T1158

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\MSDCSC\remaxcheckings.exe
Filesize
317KB

MD5
178b94a462503845831cd0a6c3e3b500

SHA1
99510e9b7abbfff7cc4097e51196ad801fc1d82d

SHA256
c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339

SHA512
ee4ee70924bf2221de983527cbc3b6d10c2962d0f0f046efe523088bf51df0da0de0c5a8a56e8c6958167e32052201b789eeff2cc989d2333760e9549e0465cf

Download Submit
C:\MSDCSC\remaxcheckings.exe
Filesize
317KB

MD5
178b94a462503845831cd0a6c3e3b500

SHA1
99510e9b7abbfff7cc4097e51196ad801fc1d82d

SHA256
c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339

SHA512
ee4ee70924bf2221de983527cbc3b6d10c2962d0f0f046efe523088bf51df0da0de0c5a8a56e8c6958167e32052201b789eeff2cc989d2333760e9549e0465cf

Download Submit
C:\MSDCSC\remaxcheckings.exe
Filesize
317KB

MD5
178b94a462503845831cd0a6c3e3b500

SHA1
99510e9b7abbfff7cc4097e51196ad801fc1d82d

SHA256
c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339

SHA512
ee4ee70924bf2221de983527cbc3b6d10c2962d0f0f046efe523088bf51df0da0de0c5a8a56e8c6958167e32052201b789eeff2cc989d2333760e9549e0465cf

Download Submit
C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Filesize
317KB

MD5
178b94a462503845831cd0a6c3e3b500

SHA1
99510e9b7abbfff7cc4097e51196ad801fc1d82d

SHA256
c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339

SHA512
ee4ee70924bf2221de983527cbc3b6d10c2962d0f0f046efe523088bf51df0da0de0c5a8a56e8c6958167e32052201b789eeff2cc989d2333760e9549e0465cf

Download Submit
C:\Users\Admin\AppData\Roaming\InstallDir\help.exe
Filesize
317KB

MD5
178b94a462503845831cd0a6c3e3b500

SHA1
99510e9b7abbfff7cc4097e51196ad801fc1d82d

SHA256
c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339

SHA512
ee4ee70924bf2221de983527cbc3b6d10c2962d0f0f046efe523088bf51df0da0de0c5a8a56e8c6958167e32052201b789eeff2cc989d2333760e9549e0465cf

Download Submit
memory/380-155-0x0000000000000000-mapping.dmp

Download
memory/628-149-0x0000000000000000-mapping.dmp

Download
memory/1800-157-0x0000000000000000-mapping.dmp

Download
memory/1800-163-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1908-148-0x0000000000000000-mapping.dmp

Download
memory/2080-133-0x0000000000000000-mapping.dmp

Download
memory/2180-134-0x00000000021F0000-0x00000000021F4000-memory.dmp

Filesize
16KB

Download
memory/2516-132-0x0000000000000000-mapping.dmp

Download
memory/2868-154-0x0000000000000000-mapping.dmp

Download
memory/3224-145-0x0000000000000000-mapping.dmp

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memory/3240-146-0x0000000000000000-mapping.dmp

Download
memory/3596-147-0x0000000000000000-mapping.dmp

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memory/3932-153-0x0000000000000000-mapping.dmp

Download
memory/3972-143-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3972-141-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3972-140-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3972-139-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3972-156-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3972-137-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3972-136-0x0000000000000000-mapping.dmp

Download
memory/4808-144-0x0000000000000000-mapping.dmp

Download
memory/4992-142-0x0000000000000000-mapping.dmp

Download
memory/5020-135-0x0000000000000000-mapping.dmp

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