48d75213df96f594a6d84b0c9346338d7569ff5a9558174998dca5f2f43919af

Analysis

max time kernel
149s
max time network
177s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23-04-2024 23:00

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General

Target

OFFICE2016/dcf.es-es/dcfmui.msi
Size

2.3MB
MD5

a0543b894c018380cc5e868f3f168069
SHA1

583ec7da66ba57ba1fb4415380259614117e74ae
SHA256

42de4102487e0ca49c4968f1109ba98abb970600eda32ac0eb11e489bd9fb8d0
SHA512

c51e9ff337a37a593dbc91a34de66d16a045862f0d735c8dea65fb8885ce9f21bb55940643315a357a56de5db4a2de41571d44fef073b7cd93bd715ea32bc932
SSDEEP

49152:IhIu+svi4ut1yFXyzEKqle+93GwtF2VbIPk9u:IhIuFvPut1WKM3Gw7Yb

Score

6^/10

Malware Config

Signatures

Enumerates connected drives 3 TTPs 46 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.exemsiexec.exe

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

Drops file in Windows directory 5 IoCs

Processes:

msiexec.exe

description	ioc	process
File opened for modification	C:\Windows\Installer\MSIB362.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIB45D.tmp	msiexec.exe
File created	C:\Windows\Installer\e57b2e5.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\e57b2e5.msi	msiexec.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log	msiexec.exe

Loads dropped DLL 2 IoCs

Processes:

MsiExec.exe

pid process

1884 MsiExec.exe
1884 MsiExec.exe

pid	process
1884	MsiExec.exe
1884	MsiExec.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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters	vssvc.exe
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

Suspicious use of AdjustPrivilegeToken 51 IoCs

Processes:

msiexec.exemsiexec.exevssvc.exesrtasks.exe

description	pid	process
Token: SeShutdownPrivilege	5000	msiexec.exe
Token: SeIncreaseQuotaPrivilege	5000	msiexec.exe
Token: SeSecurityPrivilege	1588	msiexec.exe
Token: SeCreateTokenPrivilege	5000	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	5000	msiexec.exe
Token: SeLockMemoryPrivilege	5000	msiexec.exe
Token: SeIncreaseQuotaPrivilege	5000	msiexec.exe
Token: SeMachineAccountPrivilege	5000	msiexec.exe
Token: SeTcbPrivilege	5000	msiexec.exe
Token: SeSecurityPrivilege	5000	msiexec.exe
Token: SeTakeOwnershipPrivilege	5000	msiexec.exe
Token: SeLoadDriverPrivilege	5000	msiexec.exe
Token: SeSystemProfilePrivilege	5000	msiexec.exe
Token: SeSystemtimePrivilege	5000	msiexec.exe
Token: SeProfSingleProcessPrivilege	5000	msiexec.exe
Token: SeIncBasePriorityPrivilege	5000	msiexec.exe
Token: SeCreatePagefilePrivilege	5000	msiexec.exe
Token: SeCreatePermanentPrivilege	5000	msiexec.exe
Token: SeBackupPrivilege	5000	msiexec.exe
Token: SeRestorePrivilege	5000	msiexec.exe
Token: SeShutdownPrivilege	5000	msiexec.exe
Token: SeDebugPrivilege	5000	msiexec.exe
Token: SeAuditPrivilege	5000	msiexec.exe
Token: SeSystemEnvironmentPrivilege	5000	msiexec.exe
Token: SeChangeNotifyPrivilege	5000	msiexec.exe
Token: SeRemoteShutdownPrivilege	5000	msiexec.exe
Token: SeUndockPrivilege	5000	msiexec.exe
Token: SeSyncAgentPrivilege	5000	msiexec.exe
Token: SeEnableDelegationPrivilege	5000	msiexec.exe
Token: SeManageVolumePrivilege	5000	msiexec.exe
Token: SeImpersonatePrivilege	5000	msiexec.exe
Token: SeCreateGlobalPrivilege	5000	msiexec.exe
Token: SeBackupPrivilege	2296	vssvc.exe
Token: SeRestorePrivilege	2296	vssvc.exe
Token: SeAuditPrivilege	2296	vssvc.exe
Token: SeBackupPrivilege	1588	msiexec.exe
Token: SeRestorePrivilege	1588	msiexec.exe
Token: SeRestorePrivilege	1588	msiexec.exe
Token: SeTakeOwnershipPrivilege	1588	msiexec.exe
Token: SeRestorePrivilege	1588	msiexec.exe
Token: SeTakeOwnershipPrivilege	1588	msiexec.exe
Token: SeRestorePrivilege	1588	msiexec.exe
Token: SeTakeOwnershipPrivilege	1588	msiexec.exe
Token: SeBackupPrivilege	1864	srtasks.exe
Token: SeRestorePrivilege	1864	srtasks.exe
Token: SeSecurityPrivilege	1864	srtasks.exe
Token: SeTakeOwnershipPrivilege	1864	srtasks.exe
Token: SeBackupPrivilege	1864	srtasks.exe
Token: SeRestorePrivilege	1864	srtasks.exe
Token: SeSecurityPrivilege	1864	srtasks.exe
Token: SeTakeOwnershipPrivilege	1864	srtasks.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

msiexec.exe

pid process

5000 msiexec.exe

pid	process
5000	msiexec.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

msiexec.exe

description	pid	process	target process
PID 1588 wrote to memory of 1864	1588	msiexec.exe	srtasks.exe
PID 1588 wrote to memory of 1864	1588	msiexec.exe	srtasks.exe
PID 1588 wrote to memory of 1884	1588	msiexec.exe	MsiExec.exe
PID 1588 wrote to memory of 1884	1588	msiexec.exe	MsiExec.exe
PID 1588 wrote to memory of 1884	1588	msiexec.exe	MsiExec.exe

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\OFFICE2016\dcf.es-es\dcfmui.msi
1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:5000

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Windows\system32\srtasks.exe
  C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1864
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding F004E45279A080F77DA0BE207F17193C
  2⤵
  - Loads dropped DLL
  PID:1884

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
PID:2296

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Installer\MSIB362.tmp

Filesize
95KB

MD5
acfd123d0e36411b9c1f556853dd9ea5

SHA1
812025408e21687dcd6e8eeb1667025a7b7abcbf

SHA256
d89dd83af50bfc6e325e2b4e7eecd982ec3ddee9ccb9cfef86d8a5593907c317

SHA512
e01da6d2867ca5a029d60bac781cef6639485255ce515bc8e094a43fa107b0d8c120b7bb3de75457407479de71585dfd9475b1b1f39d2d82d303586ccdb9024d

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\??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2

Filesize
23.7MB

MD5
81051e40e06647ebd9e7652c8b800efa

SHA1
2699d955e7f7756a39e4820d5c8f6802edeafd84

SHA256
f2d5e5ce80f55b5fe739deb7e11531164be3bfda18010b51ef4ea7af918317c2

SHA512
e5a9c453aa14d6607b7f5422f372a6293257d84f2dc6b7057460b2cd0d35c0edd52d345d313a4b15377aaea51852cda0716c01f6ebe98c59f5ea38d5faf3e489

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\??\Volume{df05fbf6-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{a15a221b-beee-4a2c-84f8-3380c324def0}_OnDiskSnapshotProp

Filesize
6KB

MD5
07d8ee3d8c4aac70c16af3ed33141ace

SHA1
89d4271d6f022936e484243a865866208e5ec332

SHA256
6157a06adcc43c764e95d218ee4b71f154923c9b882d78e524c88692f494f5ef

SHA512
11541d450008b4d7e7eb6fda1a500898af4a0b0844b260295bdcd89c8c0127cb67665b4d94c1907fb349ac94d1c58ea61aebe4bc9c5cf172d6e19c4541323234

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