1f7830f0117f694b87ae81caed022c82174f9a8d158a0b8e127154e17d1600cc

General

Target

PO_3421.msi
Size

2.3MB
MD5

30a04930a6888a2df882478fef4a7ade
SHA1

c91b1b550c3a74840f3066e7a4b0fe08c37b7d2a
SHA256

1f7830f0117f694b87ae81caed022c82174f9a8d158a0b8e127154e17d1600cc
SHA512

b101b58533e61dd8fe8d27af36cb3c6300927286a51994bb7adbafac63ff20af61196660bc79f3f6ffef1e9975be8d06d9ed0c88891389abedcf823480565b49

Score

6^/10

Malware Config

Signatures

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

msiexec.exe

description	ioc	process
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\F:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe

Drops file in Windows directory 7 IoCs

Processes:

svchost.exeTiWorker.exe

description	ioc	process
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe

Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

vssvc.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters\Partmgr	vssvc.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters\Partmgr\PartitionTableCache = 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	vssvc.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters\Partmgr\SnapshotDataCache = 534e41505041525401000000700000008ec7416a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	vssvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters	vssvc.exe

Suspicious use of AdjustPrivilegeToken 58 IoCs

Processes:

msiexec.exemsiexec.exevssvc.exesvchost.exeTiWorker.exe

description	pid	process
Token: SeShutdownPrivilege	1704	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1704	msiexec.exe
Token: SeSecurityPrivilege	2160	msiexec.exe
Token: SeCreateTokenPrivilege	1704	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	1704	msiexec.exe
Token: SeLockMemoryPrivilege	1704	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1704	msiexec.exe
Token: SeMachineAccountPrivilege	1704	msiexec.exe
Token: SeTcbPrivilege	1704	msiexec.exe
Token: SeSecurityPrivilege	1704	msiexec.exe
Token: SeTakeOwnershipPrivilege	1704	msiexec.exe
Token: SeLoadDriverPrivilege	1704	msiexec.exe
Token: SeSystemProfilePrivilege	1704	msiexec.exe
Token: SeSystemtimePrivilege	1704	msiexec.exe
Token: SeProfSingleProcessPrivilege	1704	msiexec.exe
Token: SeIncBasePriorityPrivilege	1704	msiexec.exe
Token: SeCreatePagefilePrivilege	1704	msiexec.exe
Token: SeCreatePermanentPrivilege	1704	msiexec.exe
Token: SeBackupPrivilege	1704	msiexec.exe
Token: SeRestorePrivilege	1704	msiexec.exe
Token: SeShutdownPrivilege	1704	msiexec.exe
Token: SeDebugPrivilege	1704	msiexec.exe
Token: SeAuditPrivilege	1704	msiexec.exe
Token: SeSystemEnvironmentPrivilege	1704	msiexec.exe
Token: SeChangeNotifyPrivilege	1704	msiexec.exe
Token: SeRemoteShutdownPrivilege	1704	msiexec.exe
Token: SeUndockPrivilege	1704	msiexec.exe
Token: SeSyncAgentPrivilege	1704	msiexec.exe
Token: SeEnableDelegationPrivilege	1704	msiexec.exe
Token: SeManageVolumePrivilege	1704	msiexec.exe
Token: SeImpersonatePrivilege	1704	msiexec.exe
Token: SeCreateGlobalPrivilege	1704	msiexec.exe
Token: SeBackupPrivilege	2072	vssvc.exe
Token: SeRestorePrivilege	2072	vssvc.exe
Token: SeAuditPrivilege	2072	vssvc.exe
Token: SeBackupPrivilege	2160	msiexec.exe
Token: SeRestorePrivilege	2160	msiexec.exe
Token: SeShutdownPrivilege	1344	svchost.exe
Token: SeCreatePagefilePrivilege	1344	svchost.exe
Token: SeShutdownPrivilege	1344	svchost.exe
Token: SeCreatePagefilePrivilege	1344	svchost.exe
Token: SeShutdownPrivilege	1344	svchost.exe
Token: SeCreatePagefilePrivilege	1344	svchost.exe
Token: SeSecurityPrivilege	4044	TiWorker.exe
Token: SeRestorePrivilege	4044	TiWorker.exe
Token: SeBackupPrivilege	4044	TiWorker.exe
Token: SeBackupPrivilege	4044	TiWorker.exe
Token: SeRestorePrivilege	4044	TiWorker.exe
Token: SeSecurityPrivilege	4044	TiWorker.exe
Token: SeBackupPrivilege	4044	TiWorker.exe
Token: SeRestorePrivilege	4044	TiWorker.exe
Token: SeSecurityPrivilege	4044	TiWorker.exe
Token: SeBackupPrivilege	4044	TiWorker.exe
Token: SeRestorePrivilege	4044	TiWorker.exe
Token: SeSecurityPrivilege	4044	TiWorker.exe
Token: SeBackupPrivilege	4044	TiWorker.exe
Token: SeRestorePrivilege	4044	TiWorker.exe
Token: SeSecurityPrivilege	4044	TiWorker.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

msiexec.exe

pid process

1704 msiexec.exe

pid	process
1704	msiexec.exe

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\PO_3421.msi
1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1704

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2160

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
PID:2072

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1344

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:4044

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

2

T1120

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1344-130-0x000002DB2AF30000-0x000002DB2AF40000-memory.dmp

Filesize
64KB

Download
memory/1344-131-0x000002DB2AF90000-0x000002DB2AFA0000-memory.dmp

Filesize
64KB

Download
memory/1344-132-0x000002DB2DC70000-0x000002DB2DC74000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads