darkcomet | c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339

Analysis

max time kernel
151s
max time network
153s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-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.exeiexplore.exeremaxcheckings.exe

description	ioc	process
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
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"	remaxcheckings.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
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\DisableNotifications = "0"	remaxcheckings.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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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

1244 c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
900 remaxcheckings.exe
976 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

1600 attrib.exe
316 attrib.exe

pid	process
1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
900	remaxcheckings.exe
976	remaxcheckings.exe

pid	process
1600	attrib.exe
316	attrib.exe

UPX packed file 9 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1244-63-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1244-65-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1244-66-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1244-69-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1244-71-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1244-72-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1244-73-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1244-89-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/976-101-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

1352 notepad.exe

pid	process
1352	notepad.exe

Loads dropped DLL 2 IoCs

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exec4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe

pid	process
1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
1244	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 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

remaxcheckings.exec4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exeiexplore.exec4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exeremaxcheckings.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\remaxcheckings = "C:\\MSDCSC\\remaxcheckings.exe"	remaxcheckings.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\help = "C:\\Users\\Admin\\AppData\\Roaming\\InstallDir\\help.exe"	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\remaxcheckings = "C:\\MSDCSC\\remaxcheckings.exe"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\remaxcheckings = "C:\\MSDCSC\\remaxcheckings.exe"	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\remaxcheckings = "C:\\MSDCSC\\remaxcheckings.exe"	iexplore.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exeremaxcheckings.exe

description	pid	process	target process
PID 1724 set thread context of 2012	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 1724 set thread context of 1244	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 900 set thread context of 2040	900	remaxcheckings.exe	iexplore.exe
PID 900 set thread context of 976	900	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
Runs net.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exeremaxcheckings.exe

pid process

1724 c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
900 remaxcheckings.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

2012 iexplore.exe

pid	process
2012	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

iexplore.exec4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2012	iexplore.exe
Token: SeSecurityPrivilege	2012	iexplore.exe
Token: SeTakeOwnershipPrivilege	2012	iexplore.exe
Token: SeLoadDriverPrivilege	2012	iexplore.exe
Token: SeSystemProfilePrivilege	2012	iexplore.exe
Token: SeSystemtimePrivilege	2012	iexplore.exe
Token: SeProfSingleProcessPrivilege	2012	iexplore.exe
Token: SeIncBasePriorityPrivilege	2012	iexplore.exe
Token: SeCreatePagefilePrivilege	2012	iexplore.exe
Token: SeBackupPrivilege	2012	iexplore.exe
Token: SeRestorePrivilege	2012	iexplore.exe
Token: SeShutdownPrivilege	2012	iexplore.exe
Token: SeDebugPrivilege	2012	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2012	iexplore.exe
Token: SeChangeNotifyPrivilege	2012	iexplore.exe
Token: SeRemoteShutdownPrivilege	2012	iexplore.exe
Token: SeUndockPrivilege	2012	iexplore.exe
Token: SeManageVolumePrivilege	2012	iexplore.exe
Token: SeImpersonatePrivilege	2012	iexplore.exe
Token: SeCreateGlobalPrivilege	2012	iexplore.exe
Token: 33	2012	iexplore.exe
Token: 34	2012	iexplore.exe
Token: 35	2012	iexplore.exe
Token: SeIncreaseQuotaPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeSecurityPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeTakeOwnershipPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeLoadDriverPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeSystemProfilePrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeSystemtimePrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeProfSingleProcessPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeIncBasePriorityPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeCreatePagefilePrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeBackupPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeRestorePrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeShutdownPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeDebugPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeSystemEnvironmentPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeChangeNotifyPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeRemoteShutdownPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeUndockPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeManageVolumePrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeImpersonatePrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeCreateGlobalPrivilege	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: 33	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: 34	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: 35	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
Token: SeIncreaseQuotaPrivilege	2040	iexplore.exe
Token: SeSecurityPrivilege	2040	iexplore.exe
Token: SeTakeOwnershipPrivilege	2040	iexplore.exe
Token: SeLoadDriverPrivilege	2040	iexplore.exe
Token: SeSystemProfilePrivilege	2040	iexplore.exe
Token: SeSystemtimePrivilege	2040	iexplore.exe
Token: SeProfSingleProcessPrivilege	2040	iexplore.exe
Token: SeIncBasePriorityPrivilege	2040	iexplore.exe
Token: SeCreatePagefilePrivilege	2040	iexplore.exe
Token: SeBackupPrivilege	2040	iexplore.exe
Token: SeRestorePrivilege	2040	iexplore.exe
Token: SeShutdownPrivilege	2040	iexplore.exe
Token: SeDebugPrivilege	2040	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2040	iexplore.exe
Token: SeChangeNotifyPrivilege	2040	iexplore.exe
Token: SeRemoteShutdownPrivilege	2040	iexplore.exe
Token: SeUndockPrivilege	2040	iexplore.exe
Token: SeManageVolumePrivilege	2040	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

2012 iexplore.exe

pid	process
2012	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.execmd.exenet.exeiexplore.exec4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe

description	pid	process	target process
PID 1724 wrote to memory of 1048	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1724 wrote to memory of 1048	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1724 wrote to memory of 1048	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1724 wrote to memory of 1048	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1724 wrote to memory of 2012	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 1724 wrote to memory of 2012	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 1724 wrote to memory of 2012	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 1724 wrote to memory of 2012	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 1724 wrote to memory of 2012	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 1724 wrote to memory of 2012	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 1724 wrote to memory of 2012	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 1724 wrote to memory of 2012	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	iexplore.exe
PID 1048 wrote to memory of 1328	1048	cmd.exe	net.exe
PID 1048 wrote to memory of 1328	1048	cmd.exe	net.exe
PID 1048 wrote to memory of 1328	1048	cmd.exe	net.exe
PID 1048 wrote to memory of 1328	1048	cmd.exe	net.exe
PID 1328 wrote to memory of 1164	1328	net.exe	net1.exe
PID 1328 wrote to memory of 1164	1328	net.exe	net1.exe
PID 1328 wrote to memory of 1164	1328	net.exe	net1.exe
PID 1328 wrote to memory of 1164	1328	net.exe	net1.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 2012 wrote to memory of 1324	2012	iexplore.exe	notepad.exe
PID 1724 wrote to memory of 1244	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 1724 wrote to memory of 1244	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 1724 wrote to memory of 1244	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 1724 wrote to memory of 1244	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 1724 wrote to memory of 1244	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 1724 wrote to memory of 1244	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 1724 wrote to memory of 1244	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 1724 wrote to memory of 1244	1724	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
PID 1244 wrote to memory of 1768	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1244 wrote to memory of 1768	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1244 wrote to memory of 1768	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1244 wrote to memory of 1768	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1244 wrote to memory of 2000	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1244 wrote to memory of 2000	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1244 wrote to memory of 2000	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1244 wrote to memory of 2000	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	cmd.exe
PID 1244 wrote to memory of 1352	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 1244 wrote to memory of 1352	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 1244 wrote to memory of 1352	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 1244 wrote to memory of 1352	1244	c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe	notepad.exe
PID 1244 wrote to memory of 1352	1244	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

1600 attrib.exe
316 attrib.exe

pid	process
1600	attrib.exe
316	attrib.exe

C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
"C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1724

C:\Windows\SysWOW64\cmd.exe
/c net stop MpsSvc
2⤵
- Suspicious use of WriteProcessMemory
PID:1048

C:\Windows\SysWOW64\net.exe
net stop MpsSvc
3⤵
- Suspicious use of WriteProcessMemory
PID:1328

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop MpsSvc
4⤵
PID:1164

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:2012

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1324

C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe
2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1244

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339.exe" +s +h
3⤵
PID:1768

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:1600

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
PID:2000

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
4⤵
- Sets file to hidden
- Views/modifies file attributes
PID:316

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
- Deletes itself
PID:1352

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:900

C:\Windows\SysWOW64\cmd.exe
/c net stop MpsSvc
4⤵
PID:1924

C:\Windows\SysWOW64\net.exe
net stop MpsSvc
5⤵
PID:1948

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop MpsSvc
6⤵
PID:1992

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
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:2040

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:976

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

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
\MSDCSC\remaxcheckings.exe
Filesize
317KB

MD5
178b94a462503845831cd0a6c3e3b500

SHA1
99510e9b7abbfff7cc4097e51196ad801fc1d82d

SHA256
c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339

SHA512
ee4ee70924bf2221de983527cbc3b6d10c2962d0f0f046efe523088bf51df0da0de0c5a8a56e8c6958167e32052201b789eeff2cc989d2333760e9549e0465cf

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

MD5
178b94a462503845831cd0a6c3e3b500

SHA1
99510e9b7abbfff7cc4097e51196ad801fc1d82d

SHA256
c4211660f42c1a72369c64c614ae994836bc501040058521cfc07383cadae339

SHA512
ee4ee70924bf2221de983527cbc3b6d10c2962d0f0f046efe523088bf51df0da0de0c5a8a56e8c6958167e32052201b789eeff2cc989d2333760e9549e0465cf

Download Submit
memory/316-79-0x0000000000000000-mapping.dmp

Download
memory/900-81-0x0000000000000000-mapping.dmp

Download
memory/976-95-0x00000000004B5900-mapping.dmp

Download
memory/976-101-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1048-55-0x0000000000000000-mapping.dmp

Download
memory/1164-57-0x0000000000000000-mapping.dmp

Download
memory/1244-63-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1244-62-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1244-72-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1244-73-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1244-71-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1244-69-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1244-89-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1244-66-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1244-67-0x00000000004B5900-mapping.dmp

Download
memory/1244-65-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1324-58-0x0000000000000000-mapping.dmp

Download
memory/1328-56-0x0000000000000000-mapping.dmp

Download
memory/1352-76-0x0000000000000000-mapping.dmp

Download
memory/1600-78-0x0000000000000000-mapping.dmp

Download
memory/1724-54-0x0000000074AD1000-0x0000000074AD3000-memory.dmp

Filesize
8KB

Download
memory/1724-60-0x0000000000250000-0x0000000000254000-memory.dmp

Filesize
16KB

Download
memory/1768-74-0x0000000000000000-mapping.dmp

Download
memory/1924-86-0x0000000000000000-mapping.dmp

Download
memory/1948-87-0x0000000000000000-mapping.dmp

Download
memory/1992-88-0x0000000000000000-mapping.dmp

Download
memory/2000-75-0x0000000000000000-mapping.dmp

Download