darkcomet | c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc

General

Target

c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Size

271KB
MD5

eb0ab5c020d77b0facffe58e4aac1b7b
SHA1

2e1802b031d8ab32f6644cd364188bebdd79b002
SHA256

c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc
SHA512

4ffa02ac5489b0eb8ae63f9e4f6410051a0a685bacde15d7b4571a9bb2276e80d0b9a1c4a6213d4313b05930a056c4a6153bf60caf39121698040e5d8f119492
SSDEEP

6144:mgT+seOpJzj1RiZC+Z38N1ppv+ab5qDZLaxbqxBY9WSP:qrAz6ZC+N8fGaCpaxbqxBuP

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

.duckdns.org:1604

Mutex

DC_MUTEX-V5NVLP0

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
xFLum93EqW7N
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

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:

c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe

Executes dropped EXE 3 IoCs

Processes:

msdcsc.exemsdcsc.exemsdcsc.exe

pid process

4920 msdcsc.exe
3892 msdcsc.exe
1296 msdcsc.exe

pid	process
4920	msdcsc.exe
3892	msdcsc.exe
1296	msdcsc.exe

UPX packed file 7 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4832-136-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4832-137-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4832-138-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4832-139-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4832-140-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4832-152-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1296-155-0x0000000000400000-0x00000000004B7000-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:

c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exemsdcsc.exe

description	pid	process	target process
PID 2132 set thread context of 4832	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
PID 4920 set thread context of 1296	4920	msdcsc.exe	msdcsc.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exemsdcsc.exe

pid	process
2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
4920	msdcsc.exe
4920	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

Processes:

c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exec1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exemsdcsc.exemsdcsc.exe

description	pid	process
Token: SeDebugPrivilege	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeIncreaseQuotaPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeSecurityPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeTakeOwnershipPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeLoadDriverPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeSystemProfilePrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeSystemtimePrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeProfSingleProcessPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeIncBasePriorityPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeCreatePagefilePrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeBackupPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeRestorePrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeShutdownPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeDebugPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeSystemEnvironmentPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeChangeNotifyPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeRemoteShutdownPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeUndockPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeManageVolumePrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeImpersonatePrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeCreateGlobalPrivilege	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: 33	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: 34	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: 35	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: 36	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
Token: SeDebugPrivilege	4920	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1296	msdcsc.exe
Token: SeSecurityPrivilege	1296	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1296	msdcsc.exe
Token: SeLoadDriverPrivilege	1296	msdcsc.exe
Token: SeSystemProfilePrivilege	1296	msdcsc.exe
Token: SeSystemtimePrivilege	1296	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1296	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1296	msdcsc.exe
Token: SeCreatePagefilePrivilege	1296	msdcsc.exe
Token: SeBackupPrivilege	1296	msdcsc.exe
Token: SeRestorePrivilege	1296	msdcsc.exe
Token: SeShutdownPrivilege	1296	msdcsc.exe
Token: SeDebugPrivilege	1296	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1296	msdcsc.exe
Token: SeChangeNotifyPrivilege	1296	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1296	msdcsc.exe
Token: SeUndockPrivilege	1296	msdcsc.exe
Token: SeManageVolumePrivilege	1296	msdcsc.exe
Token: SeImpersonatePrivilege	1296	msdcsc.exe
Token: SeCreateGlobalPrivilege	1296	msdcsc.exe
Token: 33	1296	msdcsc.exe
Token: 34	1296	msdcsc.exe
Token: 35	1296	msdcsc.exe
Token: 36	1296	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1296 msdcsc.exe

pid	process
1296	msdcsc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exec1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exemsdcsc.exe

description	pid	process	target process
PID 2132 wrote to memory of 5116	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
PID 2132 wrote to memory of 5116	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
PID 2132 wrote to memory of 5116	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
PID 2132 wrote to memory of 4832	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
PID 2132 wrote to memory of 4832	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
PID 2132 wrote to memory of 4832	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
PID 2132 wrote to memory of 4832	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
PID 2132 wrote to memory of 4832	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
PID 2132 wrote to memory of 4832	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
PID 2132 wrote to memory of 4832	2132	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
PID 4832 wrote to memory of 4920	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	msdcsc.exe
PID 4832 wrote to memory of 4920	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	msdcsc.exe
PID 4832 wrote to memory of 4920	4832	c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe	msdcsc.exe
PID 4920 wrote to memory of 3892	4920	msdcsc.exe	msdcsc.exe
PID 4920 wrote to memory of 3892	4920	msdcsc.exe	msdcsc.exe
PID 4920 wrote to memory of 3892	4920	msdcsc.exe	msdcsc.exe
PID 4920 wrote to memory of 1296	4920	msdcsc.exe	msdcsc.exe
PID 4920 wrote to memory of 1296	4920	msdcsc.exe	msdcsc.exe
PID 4920 wrote to memory of 1296	4920	msdcsc.exe	msdcsc.exe
PID 4920 wrote to memory of 1296	4920	msdcsc.exe	msdcsc.exe
PID 4920 wrote to memory of 1296	4920	msdcsc.exe	msdcsc.exe
PID 4920 wrote to memory of 1296	4920	msdcsc.exe	msdcsc.exe
PID 4920 wrote to memory of 1296	4920	msdcsc.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
"C:\Users\Admin\AppData\Local\Temp\c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2132

C:\Users\Admin\AppData\Local\Temp\c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
"C:\Users\Admin\AppData\Local\Temp\c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe"
2⤵
PID:5116

C:\Users\Admin\AppData\Local\Temp\c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe
"C:\Users\Admin\AppData\Local\Temp\c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc.exe"
2⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4832

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4920

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
4⤵
- Executes dropped EXE
PID:3892

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1296

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
271KB

MD5
eb0ab5c020d77b0facffe58e4aac1b7b

SHA1
2e1802b031d8ab32f6644cd364188bebdd79b002

SHA256
c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc

SHA512
4ffa02ac5489b0eb8ae63f9e4f6410051a0a685bacde15d7b4571a9bb2276e80d0b9a1c4a6213d4313b05930a056c4a6153bf60caf39121698040e5d8f119492

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
271KB

MD5
eb0ab5c020d77b0facffe58e4aac1b7b

SHA1
2e1802b031d8ab32f6644cd364188bebdd79b002

SHA256
c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc

SHA512
4ffa02ac5489b0eb8ae63f9e4f6410051a0a685bacde15d7b4571a9bb2276e80d0b9a1c4a6213d4313b05930a056c4a6153bf60caf39121698040e5d8f119492

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
271KB

MD5
eb0ab5c020d77b0facffe58e4aac1b7b

SHA1
2e1802b031d8ab32f6644cd364188bebdd79b002

SHA256
c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc

SHA512
4ffa02ac5489b0eb8ae63f9e4f6410051a0a685bacde15d7b4571a9bb2276e80d0b9a1c4a6213d4313b05930a056c4a6153bf60caf39121698040e5d8f119492

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
271KB

MD5
eb0ab5c020d77b0facffe58e4aac1b7b

SHA1
2e1802b031d8ab32f6644cd364188bebdd79b002

SHA256
c1698f1cccd0cf39d9ef3aba436b1beaf17b6b8e4d712d1e99fa063fe3850bdc

SHA512
4ffa02ac5489b0eb8ae63f9e4f6410051a0a685bacde15d7b4571a9bb2276e80d0b9a1c4a6213d4313b05930a056c4a6153bf60caf39121698040e5d8f119492

Download Submit
memory/1296-147-0x0000000000000000-mapping.dmp

Download
memory/1296-155-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2132-133-0x0000000074E40000-0x00000000753F1000-memory.dmp

Filesize
5.7MB

Download
memory/2132-132-0x0000000074E40000-0x00000000753F1000-memory.dmp

Filesize
5.7MB

Download
memory/3892-145-0x0000000000000000-mapping.dmp

Download
memory/4832-135-0x0000000000000000-mapping.dmp

Download
memory/4832-136-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4832-137-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4832-140-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4832-139-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4832-152-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4832-138-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4920-144-0x0000000074E40000-0x00000000753F1000-memory.dmp

Filesize
5.7MB

Download
memory/4920-141-0x0000000000000000-mapping.dmp

Download
memory/4920-154-0x0000000074E40000-0x00000000753F1000-memory.dmp

Filesize
5.7MB

Download
memory/5116-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads