sakula | 137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928

General

Target

137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe
Size

216KB
MD5

3ebe40f8bf7af5c75651a363cf3ee82d
SHA1

4c955b4d2870ac035284b11e86919fc105cb5548
SHA256

137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928
SHA512

4766d54b0f937e0f8511abf658039cf7b98206857114767671e41a3cefbaa0445d5419df31495b855e230df64b5bf60f50b28621137cca46c7d5f4fbfedaef77

Score

10^/10

sakula persistence rat trojan

Malware Config

Signatures

Sakula
Sakula is a remote access trojan with various capabilities.
trojan rat sakula

Sakula Payload 3 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe	family_sakula
C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe	family_sakula
behavioral2/memory/648-132-0x0000000000400000-0x0000000000420000-memory.dmp	family_sakula

Executes dropped EXE 1 IoCs

Processes:

MediaCenter.exe

pid process

2316 MediaCenter.exe

pid	process
2316	MediaCenter.exe

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:

137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MicroMedia = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MicroMedia\\MediaCenter.exe"	137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe

Drops file in Windows directory 3 IoCs

Processes:

TiWorker.exesvchost.exe

description	ioc	process
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\DeliveryOptimization\State\keyValueLKG.dat	svchost.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

MusNotifyIcon.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotifyIcon.exe
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotifyIcon.exe

Modifies data under HKEY_USERS 49 IoCs

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.000000"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PeerInfoCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadRatePct = "100"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthlyUploadRestriction = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadPendingCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyGroupBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\GroupConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkUsageBps = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\GeoVersion_EndpointFullUri = "https://geover.prod.do.dsp.mp.microsoft.com/geoversion"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\BkDownloadRatePct = "45"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthID = "2"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132892927085890706"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4144"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DownloadMode_BackCompat = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCacheHostBytes = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\Geo_EndpointFullUri = "https://geo.prod.do.dsp.mp.microsoft.com/geo"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadPendingCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.460295"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "1.197642"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkUsageBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DODownloadMode = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\FrDownloadRatePct = "90"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CacheSizeBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CDNConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LinkLocalConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4348"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Settings	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLinkLocalBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LANConnectionCount = "0"	svchost.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

672 PING.EXE

pid	process
672	PING.EXE

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exeTiWorker.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	648	137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe
Token: SeBackupPrivilege	1428	TiWorker.exe
Token: SeRestorePrivilege	1428	TiWorker.exe
Token: SeSecurityPrivilege	1428	TiWorker.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.execmd.exe

description	pid	process	target process
PID 648 wrote to memory of 2316	648	137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe	MediaCenter.exe
PID 648 wrote to memory of 2316	648	137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe	MediaCenter.exe
PID 648 wrote to memory of 2316	648	137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe	MediaCenter.exe
PID 648 wrote to memory of 3988	648	137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe	cmd.exe
PID 648 wrote to memory of 3988	648	137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe	cmd.exe
PID 648 wrote to memory of 3988	648	137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe	cmd.exe
PID 3988 wrote to memory of 672	3988	cmd.exe	PING.EXE
PID 3988 wrote to memory of 672	3988	cmd.exe	PING.EXE
PID 3988 wrote to memory of 672	3988	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe
"C:\Users\Admin\AppData\Local\Temp\137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:648

C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
2⤵
- Executes dropped EXE
PID:2316

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\137c627a027aa4304858d4b0f9a965c48ea26db5ecdfe0373d1f1852149e7928.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:3988

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1
3⤵
- Runs ping.exe
PID:672

C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
1⤵
- Checks processor information in registry
PID:836

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:3140

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1428

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

Remote System Discovery

1

T1018

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

MD5
cd886b59444d46ffc0386ea7340a6fcc

SHA1
c04decec7b0085f35f9cd643e9c91f00fdb163f1

SHA256
095753a7e20d45aa10ba556789106b11b5265ce266bc73291058f3d1cf07f8ac

SHA512
31c994f4d818902c2c75692aea3c36b6b7613a7843f76bc4dccc518012871551b166c3f9f570a5dc562205ffb44e4accc26473ddb22a9cf19b6ac79b578b9852

Download Submit
C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

MD5
cd886b59444d46ffc0386ea7340a6fcc

SHA1
c04decec7b0085f35f9cd643e9c91f00fdb163f1

SHA256
095753a7e20d45aa10ba556789106b11b5265ce266bc73291058f3d1cf07f8ac

SHA512
31c994f4d818902c2c75692aea3c36b6b7613a7843f76bc4dccc518012871551b166c3f9f570a5dc562205ffb44e4accc26473ddb22a9cf19b6ac79b578b9852

Download Submit
memory/648-132-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads