matanbuchus | 3afb8aec8a275aa2e3e5f1414a5a657a1721b12d1af4d3b44763b3a4d2481051

General

Target

db.msi
Size

992KB
MD5

1b43d95fd338cf086f37372314aa6b62
SHA1

b464fe581b4411eca737a3814ad867cd3271e394
SHA256

3afb8aec8a275aa2e3e5f1414a5a657a1721b12d1af4d3b44763b3a4d2481051
SHA512

6ca5aa81954f5097fcf1c092370dd7564f611ca0d5afa3121d7903ccec8e65f022085686472d1c63410e8d2f6bdeffa5e803f8867f3055f3e773237b3c458d9b

Score

10^/10

matanbuchus loader

Malware Config

Signatures

Matanbuchus
A loader sold as MaaS first seen in February 2021.
loader matanbuchus
Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

1808 regsvr32.exe

pid	process
1808	regsvr32.exe

Enumerates connected drives 3 TTPs 48 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)	\??\R:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\F:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\F:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\M:	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)	\??\K:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe

Drops file in Windows directory 10 IoCs

Processes:

msiexec.exeDrvInst.exe

description	ioc	process
File created	C:\Windows\Installer\6c4a4d.msi	msiexec.exe
File opened for modification	C:\Windows\INF\setupapi.ev1	DrvInst.exe
File opened for modification	C:\Windows\Installer\6c4a4a.msi	msiexec.exe
File created	C:\Windows\Installer\6c4a4b.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI4CAB.tmp	msiexec.exe
File opened for modification	C:\Windows\INF\setupapi.ev3	DrvInst.exe
File opened for modification	C:\Windows\INF\setupapi.dev.log	DrvInst.exe
File created	C:\Windows\Installer\6c4a4a.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\6c4a4b.ipi	msiexec.exe

Modifies data under HKEY_USERS 43 IoCs

Processes:

DrvInst.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CRLs	DrvInst.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	DrvInst.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

msiexec.exe

pid process

992 msiexec.exe
992 msiexec.exe

pid	process
992	msiexec.exe
992	msiexec.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

msiexec.exemsiexec.exevssvc.exeDrvInst.exe

description	pid	process
Token: SeShutdownPrivilege	528	msiexec.exe
Token: SeIncreaseQuotaPrivilege	528	msiexec.exe
Token: SeRestorePrivilege	992	msiexec.exe
Token: SeTakeOwnershipPrivilege	992	msiexec.exe
Token: SeSecurityPrivilege	992	msiexec.exe
Token: SeCreateTokenPrivilege	528	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	528	msiexec.exe
Token: SeLockMemoryPrivilege	528	msiexec.exe
Token: SeIncreaseQuotaPrivilege	528	msiexec.exe
Token: SeMachineAccountPrivilege	528	msiexec.exe
Token: SeTcbPrivilege	528	msiexec.exe
Token: SeSecurityPrivilege	528	msiexec.exe
Token: SeTakeOwnershipPrivilege	528	msiexec.exe
Token: SeLoadDriverPrivilege	528	msiexec.exe
Token: SeSystemProfilePrivilege	528	msiexec.exe
Token: SeSystemtimePrivilege	528	msiexec.exe
Token: SeProfSingleProcessPrivilege	528	msiexec.exe
Token: SeIncBasePriorityPrivilege	528	msiexec.exe
Token: SeCreatePagefilePrivilege	528	msiexec.exe
Token: SeCreatePermanentPrivilege	528	msiexec.exe
Token: SeBackupPrivilege	528	msiexec.exe
Token: SeRestorePrivilege	528	msiexec.exe
Token: SeShutdownPrivilege	528	msiexec.exe
Token: SeDebugPrivilege	528	msiexec.exe
Token: SeAuditPrivilege	528	msiexec.exe
Token: SeSystemEnvironmentPrivilege	528	msiexec.exe
Token: SeChangeNotifyPrivilege	528	msiexec.exe
Token: SeRemoteShutdownPrivilege	528	msiexec.exe
Token: SeUndockPrivilege	528	msiexec.exe
Token: SeSyncAgentPrivilege	528	msiexec.exe
Token: SeEnableDelegationPrivilege	528	msiexec.exe
Token: SeManageVolumePrivilege	528	msiexec.exe
Token: SeImpersonatePrivilege	528	msiexec.exe
Token: SeCreateGlobalPrivilege	528	msiexec.exe
Token: SeBackupPrivilege	1104	vssvc.exe
Token: SeRestorePrivilege	1104	vssvc.exe
Token: SeAuditPrivilege	1104	vssvc.exe
Token: SeBackupPrivilege	992	msiexec.exe
Token: SeRestorePrivilege	992	msiexec.exe
Token: SeRestorePrivilege	1424	DrvInst.exe
Token: SeRestorePrivilege	1424	DrvInst.exe
Token: SeRestorePrivilege	1424	DrvInst.exe
Token: SeRestorePrivilege	1424	DrvInst.exe
Token: SeRestorePrivilege	1424	DrvInst.exe
Token: SeRestorePrivilege	1424	DrvInst.exe
Token: SeRestorePrivilege	1424	DrvInst.exe
Token: SeLoadDriverPrivilege	1424	DrvInst.exe
Token: SeLoadDriverPrivilege	1424	DrvInst.exe
Token: SeLoadDriverPrivilege	1424	DrvInst.exe
Token: SeRestorePrivilege	992	msiexec.exe
Token: SeTakeOwnershipPrivilege	992	msiexec.exe
Token: SeRestorePrivilege	992	msiexec.exe
Token: SeTakeOwnershipPrivilege	992	msiexec.exe
Token: SeRestorePrivilege	992	msiexec.exe
Token: SeTakeOwnershipPrivilege	992	msiexec.exe
Token: SeRestorePrivilege	992	msiexec.exe
Token: SeTakeOwnershipPrivilege	992	msiexec.exe
Token: SeRestorePrivilege	992	msiexec.exe
Token: SeTakeOwnershipPrivilege	992	msiexec.exe
Token: SeRestorePrivilege	992	msiexec.exe
Token: SeTakeOwnershipPrivilege	992	msiexec.exe
Token: SeRestorePrivilege	992	msiexec.exe
Token: SeTakeOwnershipPrivilege	992	msiexec.exe
Token: SeRestorePrivilege	992	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

msiexec.exe

pid process

528 msiexec.exe
528 msiexec.exe

pid	process
528	msiexec.exe
528	msiexec.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

msiexec.exeregsvr32.exe

description	pid	process	target process
PID 992 wrote to memory of 1696	992	msiexec.exe	regsvr32.exe
PID 992 wrote to memory of 1696	992	msiexec.exe	regsvr32.exe
PID 992 wrote to memory of 1696	992	msiexec.exe	regsvr32.exe
PID 992 wrote to memory of 1696	992	msiexec.exe	regsvr32.exe
PID 992 wrote to memory of 1696	992	msiexec.exe	regsvr32.exe
PID 1696 wrote to memory of 1808	1696	regsvr32.exe	regsvr32.exe
PID 1696 wrote to memory of 1808	1696	regsvr32.exe	regsvr32.exe
PID 1696 wrote to memory of 1808	1696	regsvr32.exe	regsvr32.exe
PID 1696 wrote to memory of 1808	1696	regsvr32.exe	regsvr32.exe
PID 1696 wrote to memory of 1808	1696	regsvr32.exe	regsvr32.exe
PID 1696 wrote to memory of 1808	1696	regsvr32.exe	regsvr32.exe
PID 1696 wrote to memory of 1808	1696	regsvr32.exe	regsvr32.exe

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\db.msi
1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:528

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:992
- \??\c:\windows\system32\regsvr32.exe
  c:\windows\system32\regsvr32.exe -n -i:"Update Installation" "C:\Users\Admin\AppData\Local\AdobeStockClient\ado.lic"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1696
- - C:\Windows\SysWOW64\regsvr32.exe
    -n -i:"Update Installation" "C:\Users\Admin\AppData\Local\AdobeStockClient\ado.lic"
    3⤵
    - Loads dropped DLL
    PID:1808

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1104

C:\Windows\system32\DrvInst.exe
DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003F0" "00000000000002B0"
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1424

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\AdobeStockClient\ado.lic

Filesize
2.5MB

MD5
64a2807bc1385ee99c892012ed0a62bf

SHA1
1d21c43b582ca6ad77714c05976fe5827f028bd0

SHA256
e66c2a09074fa94390262c8b925988e7d9a085edcc97cad79e2ccc9c0e862567

SHA512
78352c8643206849726ff7240d9a80faedc76f9586943dd8cdb649ff62af658a849258783fec50157b5f7118a0442ab538a475886d44a2993b2aa7be1b5b46a1

Download Submit
\Users\Admin\AppData\Local\AdobeStockClient\ado.lic

Filesize
2.5MB

MD5
64a2807bc1385ee99c892012ed0a62bf

SHA1
1d21c43b582ca6ad77714c05976fe5827f028bd0

SHA256
e66c2a09074fa94390262c8b925988e7d9a085edcc97cad79e2ccc9c0e862567

SHA512
78352c8643206849726ff7240d9a80faedc76f9586943dd8cdb649ff62af658a849258783fec50157b5f7118a0442ab538a475886d44a2993b2aa7be1b5b46a1

Download Submit
memory/528-54-0x000007FEFBAF1000-0x000007FEFBAF3000-memory.dmp

Filesize
8KB

Download
memory/1696-56-0x0000000000000000-mapping.dmp

Download
memory/1808-59-0x0000000000000000-mapping.dmp

Download
memory/1808-60-0x00000000755C1000-0x00000000755C3000-memory.dmp

Filesize
8KB

Download
memory/1808-63-0x00000000022E0000-0x000000000235B000-memory.dmp

Filesize
492KB

Download
memory/1808-62-0x00000000022E0000-0x000000000235B000-memory.dmp

Filesize
492KB

Download
memory/1808-64-0x0000000002110000-0x00000000022D7000-memory.dmp

Filesize
1.8MB

Download
memory/1808-65-0x00000000022E0000-0x000000000235B000-memory.dmp

Filesize
492KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads