3a950d7e6736f17c3df90844c76d934dc66c17ec76841a4ad58de07af7955f0f

General

Target

cisa.msi
Size

1.5MB
MD5

c4e8f3e02fd50a4051f11048f1355726
SHA1

c82bf39c9f4797f346447aecc1070fb8c892010f
SHA256

3a950d7e6736f17c3df90844c76d934dc66c17ec76841a4ad58de07af7955f0f
SHA512

e44d8330c4ffdae01614ed5d11c2f112cff9b39bae793242f983d039e1404d371a2697a77fa65b740e43548ab1b203607a6d82b05ff3df741be02bd99a136592
SSDEEP

24576:QjGxLNvYLSMvZCFlp8zBQSc0ZoCvqKwx0ECIgYmfLVYeBZr7A0r7Jh3OnJ3qXIoj:QjivYpW8zBQSc0ZnSKeZKumZr7A+D3O2

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

Drops file in Windows directory 11 IoCs

Processes:

msiexec.exeDrvInst.exe

description	ioc	process
File opened for modification	C:\Windows\Installer\MSI37E5.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\f76360f.ipi	msiexec.exe
File opened for modification	C:\Windows\INF\setupapi.ev3	DrvInst.exe
File created	C:\Windows\Installer\f76360e.msi	msiexec.exe
File created	C:\Windows\Installer\f76360f.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI3785.tmp	msiexec.exe
File opened for modification	C:\Windows\INF\setupapi.ev1	DrvInst.exe
File opened for modification	C:\Windows\INF\setupapi.dev.log	DrvInst.exe
File opened for modification	C:\Windows\Installer\f76360e.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI365C.tmp	msiexec.exe

Executes dropped EXE 1 IoCs

Processes:

MSI37E5.tmp

pid process

2024 MSI37E5.tmp

pid	process
2024	MSI37E5.tmp

Loads dropped DLL 10 IoCs

Processes:

MsiExec.exeMsiExec.exerundll32.exe

pid	process
1948	MsiExec.exe
1948	MsiExec.exe
1948	MsiExec.exe
1948	MsiExec.exe
1948	MsiExec.exe
1636	MsiExec.exe
2552	rundll32.exe
2552	rundll32.exe
2552	rundll32.exe
2552	rundll32.exe

Modifies data under HKEY_USERS 43 IoCs

Processes:

DrvInst.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	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\Policies\Microsoft\SystemCertificates\CA\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\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
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\trust\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\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\trust\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	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\SmartCardRoot\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\CTLs	DrvInst.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

msiexec.exeMSI37E5.tmprundll32.exe

pid process

1856 msiexec.exe
1856 msiexec.exe
2024 MSI37E5.tmp
2552 rundll32.exe
2552 rundll32.exe

pid	process
1856	msiexec.exe
1856	msiexec.exe
2024	MSI37E5.tmp
2552	rundll32.exe
2552	rundll32.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

msiexec.exemsiexec.exe

description	pid	process
Token: SeShutdownPrivilege	3028	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3028	msiexec.exe
Token: SeRestorePrivilege	1856	msiexec.exe
Token: SeTakeOwnershipPrivilege	1856	msiexec.exe
Token: SeSecurityPrivilege	1856	msiexec.exe
Token: SeCreateTokenPrivilege	3028	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	3028	msiexec.exe
Token: SeLockMemoryPrivilege	3028	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3028	msiexec.exe
Token: SeMachineAccountPrivilege	3028	msiexec.exe
Token: SeTcbPrivilege	3028	msiexec.exe
Token: SeSecurityPrivilege	3028	msiexec.exe
Token: SeTakeOwnershipPrivilege	3028	msiexec.exe
Token: SeLoadDriverPrivilege	3028	msiexec.exe
Token: SeSystemProfilePrivilege	3028	msiexec.exe
Token: SeSystemtimePrivilege	3028	msiexec.exe
Token: SeProfSingleProcessPrivilege	3028	msiexec.exe
Token: SeIncBasePriorityPrivilege	3028	msiexec.exe
Token: SeCreatePagefilePrivilege	3028	msiexec.exe
Token: SeCreatePermanentPrivilege	3028	msiexec.exe
Token: SeBackupPrivilege	3028	msiexec.exe
Token: SeRestorePrivilege	3028	msiexec.exe
Token: SeShutdownPrivilege	3028	msiexec.exe
Token: SeDebugPrivilege	3028	msiexec.exe
Token: SeAuditPrivilege	3028	msiexec.exe
Token: SeSystemEnvironmentPrivilege	3028	msiexec.exe
Token: SeChangeNotifyPrivilege	3028	msiexec.exe
Token: SeRemoteShutdownPrivilege	3028	msiexec.exe
Token: SeUndockPrivilege	3028	msiexec.exe
Token: SeSyncAgentPrivilege	3028	msiexec.exe
Token: SeEnableDelegationPrivilege	3028	msiexec.exe
Token: SeManageVolumePrivilege	3028	msiexec.exe
Token: SeImpersonatePrivilege	3028	msiexec.exe
Token: SeCreateGlobalPrivilege	3028	msiexec.exe
Token: SeCreateTokenPrivilege	3028	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	3028	msiexec.exe
Token: SeLockMemoryPrivilege	3028	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3028	msiexec.exe
Token: SeMachineAccountPrivilege	3028	msiexec.exe
Token: SeTcbPrivilege	3028	msiexec.exe
Token: SeSecurityPrivilege	3028	msiexec.exe
Token: SeTakeOwnershipPrivilege	3028	msiexec.exe
Token: SeLoadDriverPrivilege	3028	msiexec.exe
Token: SeSystemProfilePrivilege	3028	msiexec.exe
Token: SeSystemtimePrivilege	3028	msiexec.exe
Token: SeProfSingleProcessPrivilege	3028	msiexec.exe
Token: SeIncBasePriorityPrivilege	3028	msiexec.exe
Token: SeCreatePagefilePrivilege	3028	msiexec.exe
Token: SeCreatePermanentPrivilege	3028	msiexec.exe
Token: SeBackupPrivilege	3028	msiexec.exe
Token: SeRestorePrivilege	3028	msiexec.exe
Token: SeShutdownPrivilege	3028	msiexec.exe
Token: SeDebugPrivilege	3028	msiexec.exe
Token: SeAuditPrivilege	3028	msiexec.exe
Token: SeSystemEnvironmentPrivilege	3028	msiexec.exe
Token: SeChangeNotifyPrivilege	3028	msiexec.exe
Token: SeRemoteShutdownPrivilege	3028	msiexec.exe
Token: SeUndockPrivilege	3028	msiexec.exe
Token: SeSyncAgentPrivilege	3028	msiexec.exe
Token: SeEnableDelegationPrivilege	3028	msiexec.exe
Token: SeManageVolumePrivilege	3028	msiexec.exe
Token: SeImpersonatePrivilege	3028	msiexec.exe
Token: SeCreateGlobalPrivilege	3028	msiexec.exe
Token: SeCreateTokenPrivilege	3028	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

msiexec.exe

pid process

3028 msiexec.exe
3028 msiexec.exe

pid	process
3028	msiexec.exe
3028	msiexec.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

msiexec.exe

description	pid	process	target process
PID 1856 wrote to memory of 1948	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1948	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1948	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1948	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1948	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1948	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1948	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1636	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1636	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1636	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1636	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1636	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1636	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 1636	1856	msiexec.exe	MsiExec.exe
PID 1856 wrote to memory of 2024	1856	msiexec.exe	MSI37E5.tmp
PID 1856 wrote to memory of 2024	1856	msiexec.exe	MSI37E5.tmp
PID 1856 wrote to memory of 2024	1856	msiexec.exe	MSI37E5.tmp
PID 1856 wrote to memory of 2024	1856	msiexec.exe	MSI37E5.tmp
PID 1856 wrote to memory of 2024	1856	msiexec.exe	MSI37E5.tmp
PID 1856 wrote to memory of 2024	1856	msiexec.exe	MSI37E5.tmp
PID 1856 wrote to memory of 2024	1856	msiexec.exe	MSI37E5.tmp

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\cisa.msi
1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:3028

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:1856
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 33A0C081A551FC57A429DC5CF88527E9 C
  2⤵
  - Loads dropped DLL
  PID:1948
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 56D0A476A671A718CFC2F5995751150F
  2⤵
  - Loads dropped DLL
  PID:1636
- C:\Windows\Installer\MSI37E5.tmp
  "C:\Windows\Installer\MSI37E5.tmp" C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\stat\falcon.dll, vgml
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2024

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
PID:2708

C:\Windows\system32\DrvInst.exe
DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000005A8" "00000000000005B0"
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:2364

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\stat\falcon.dll, vgml
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:2552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Loading Replay Monitor...

Downloads

C:\Config.Msi\f763610.rbs

Filesize
1KB

MD5
5e3614652059af4321a520cedd956a2a

SHA1
e463e57a4fcf38eb53da5cb4ed01f1deeade8337

SHA256
92930783dc5aefa3549ce78a0ed0cffbe729933b77e84e7d4cba25332c2b1f1e

SHA512
89d078763459cc6881d30f6be9ff6051fb5bc4fd217ec6a4baad878f63e8f4c5946d9981deb8af1b7d30e843d6cdcbe12d40902b64dbc2c544e28d9eb899c475

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSI165E.tmp

Filesize
436KB

MD5
475d20c0ea477a35660e3f67ecf0a1df

SHA1
67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

SHA256
426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

SHA512
99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

Download Submit
C:\Windows\Installer\MSI37E5.tmp

Filesize
389KB

MD5
b9545ed17695a32face8c3408a6a3553

SHA1
f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

SHA256
1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

SHA512
f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

Download Submit
\Users\Admin\AppData\Local\stat\falcon.dll

Filesize
694KB

MD5
da8ae8e1de522b20a462239c6893613e

SHA1
7f65ef885815d81d220f9f42877ff0d696b0134c

SHA256
aee22a35cbdac3f16c3ed742c0b1bfe9739a13469cf43b36fb2c63565111028c

SHA512
d2dca9ba9272a0bdfa88f7520545e21a1f4d18dcacec36b072369cee8e28ba635a0214b47caef74b6f7fcd06e120d898da997e71c8955c72510972c66d2a855d

Download Submit
memory/2024-37-0x00000000001A0000-0x00000000001A2000-memory.dmp

Filesize
8KB

Download
memory/2552-43-0x00000000003B0000-0x00000000003C4000-memory.dmp

Filesize
80KB

Download
memory/2552-44-0x00000000003B0000-0x00000000003C4000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads