94e3a8f25dbff86ee6fe11ee045b70055357c08ae1723598a361c96eac5e2c24

Analysis

max time kernel
119s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
08-11-2023 03:15

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General

Target

Bootkits/8dcc573293ae9a545655a47e23f106738a190f5318c31124bd3a73b12f128df6.msi
Size

433KB
MD5

c73606235b64566e6cbc67b9f608b4f8
SHA1

880256847cad1443b2865b27fad053667a30af21
SHA256

8dcc573293ae9a545655a47e23f106738a190f5318c31124bd3a73b12f128df6
SHA512

0c068c74fc4cf284652f014fd2a89bda64d2013a33501b715709bb5edd79ccc8d6ff79e91562be1c46bf89a7176aaf15dd4bf12fc6101d23b584d34a2a6b0d5e
SSDEEP

3072:943ygYXkj7q0vTYDryOjnpU6ij4qpXqnnDibAJBVk6YYA69Z3D3NPT+7qSS:945iLTqp4nwEzYYA83D3NPT+7

Score

7^/10

persistence

Malware Config

Signatures

Drops startup file 1 IoCs

Processes:

MsiExec.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\QLCMTFZMXT.lnk MsiExec.exe
Loads dropped DLL 2 IoCs

Processes:

MsiExec.exe

pid process

4532 MsiExec.exe
4532 MsiExec.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\QLCMTFZMXT.lnk	MsiExec.exe

pid	process
4532	MsiExec.exe
4532	MsiExec.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

MsiExec.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\QLCMTFZMXT = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\QLCMTFZMXT.lnk"	MsiExec.exe

Blocklisted process makes network request 1 IoCs

Processes:

MsiExec.exe

flow pid process

24 4532 MsiExec.exe

flow	pid	process
24	4532	MsiExec.exe

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

Drops file in Windows directory 9 IoCs

Processes:

msiexec.exe

description	ioc	process
File created	C:\Windows\Installer\e581edd.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI20F1.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI243D.tmp	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File created	C:\Windows\Installer\SourceHash{817E4709-EB1A-4B7F-B602-C06BD1A2FEB4}	msiexec.exe
File opened for modification	C:\Windows\Installer\e581edd.msi	msiexec.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI2586.tmp	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

msiexec.exe

pid process

2200 msiexec.exe
2200 msiexec.exe

pid	process
2200	msiexec.exe
2200	msiexec.exe

Suspicious use of AdjustPrivilegeToken 44 IoCs

Processes:

msiexec.exemsiexec.exe

description	pid	process
Token: SeShutdownPrivilege	4508	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4508	msiexec.exe
Token: SeSecurityPrivilege	2200	msiexec.exe
Token: SeCreateTokenPrivilege	4508	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4508	msiexec.exe
Token: SeLockMemoryPrivilege	4508	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4508	msiexec.exe
Token: SeMachineAccountPrivilege	4508	msiexec.exe
Token: SeTcbPrivilege	4508	msiexec.exe
Token: SeSecurityPrivilege	4508	msiexec.exe
Token: SeTakeOwnershipPrivilege	4508	msiexec.exe
Token: SeLoadDriverPrivilege	4508	msiexec.exe
Token: SeSystemProfilePrivilege	4508	msiexec.exe
Token: SeSystemtimePrivilege	4508	msiexec.exe
Token: SeProfSingleProcessPrivilege	4508	msiexec.exe
Token: SeIncBasePriorityPrivilege	4508	msiexec.exe
Token: SeCreatePagefilePrivilege	4508	msiexec.exe
Token: SeCreatePermanentPrivilege	4508	msiexec.exe
Token: SeBackupPrivilege	4508	msiexec.exe
Token: SeRestorePrivilege	4508	msiexec.exe
Token: SeShutdownPrivilege	4508	msiexec.exe
Token: SeDebugPrivilege	4508	msiexec.exe
Token: SeAuditPrivilege	4508	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4508	msiexec.exe
Token: SeChangeNotifyPrivilege	4508	msiexec.exe
Token: SeRemoteShutdownPrivilege	4508	msiexec.exe
Token: SeUndockPrivilege	4508	msiexec.exe
Token: SeSyncAgentPrivilege	4508	msiexec.exe
Token: SeEnableDelegationPrivilege	4508	msiexec.exe
Token: SeManageVolumePrivilege	4508	msiexec.exe
Token: SeImpersonatePrivilege	4508	msiexec.exe
Token: SeCreateGlobalPrivilege	4508	msiexec.exe
Token: SeRestorePrivilege	2200	msiexec.exe
Token: SeTakeOwnershipPrivilege	2200	msiexec.exe
Token: SeRestorePrivilege	2200	msiexec.exe
Token: SeTakeOwnershipPrivilege	2200	msiexec.exe
Token: SeRestorePrivilege	2200	msiexec.exe
Token: SeTakeOwnershipPrivilege	2200	msiexec.exe
Token: SeRestorePrivilege	2200	msiexec.exe
Token: SeTakeOwnershipPrivilege	2200	msiexec.exe
Token: SeRestorePrivilege	2200	msiexec.exe
Token: SeTakeOwnershipPrivilege	2200	msiexec.exe
Token: SeRestorePrivilege	2200	msiexec.exe
Token: SeTakeOwnershipPrivilege	2200	msiexec.exe

Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

msiexec.exeMsiExec.exe

pid process

4508 msiexec.exe
4532 MsiExec.exe
4508 msiexec.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

MsiExec.exe

pid process

4532 MsiExec.exe

pid	process
4508	msiexec.exe
4532	MsiExec.exe
4508	msiexec.exe

pid	process
4532	MsiExec.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

msiexec.exe

description	pid	process	target process
PID 2200 wrote to memory of 4532	2200	msiexec.exe	MsiExec.exe
PID 2200 wrote to memory of 4532	2200	msiexec.exe	MsiExec.exe
PID 2200 wrote to memory of 4532	2200	msiexec.exe	MsiExec.exe

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\Bootkits\8dcc573293ae9a545655a47e23f106738a190f5318c31124bd3a73b12f128df6.msi
1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4508

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:2200

C:\Windows\syswow64\MsiExec.exe
C:\Windows\syswow64\MsiExec.exe -Embedding 280F5024C64AE832E4F2B72028F5BBF1
2⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Blocklisted process makes network request
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4532

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Config.Msi\e581ee0.rbs
Filesize
796B

MD5
00d764bc4c240d374ca4ee18869f161e

SHA1
f31fd07f3ed55748c03ae127ac137433f7210016

SHA256
600f1747ad769cb305afc90d708c4fdcf9e001b9ec80e6a2ffd97581db2ff92e

SHA512
0247284b84247a2134bac399dffc2a9d9da806bb47cb3309c7cf4f3cd9e426141e1f78ce67d97f17710752e7aded0b0d6c77b9251f24852f07a928600dce951f

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C:\Users\Admin\AppData\Local\Temp\MSI80e72.LOG
Filesize
22KB

MD5
8cf25d7fc1879b75637f36fea6b26ab3

SHA1
43438c14172a8deb3139c77a867a01358fb3e4e9

SHA256
702637eb44114534c8683fd7cc3767b32a8c0ede18d8e10a408ff4d20cc8a504

SHA512
70fecf0b5f7e8c4eed363e3193e17fe653b4b2f7044926f589097414a2212019bbb3929945265c31a57b951ebcf98c400b03fe1d7bbde02214d71d3da7765246

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C:\Windows\Installer\MSI20F1.tmp
Filesize
91KB

MD5
5c5bef05b6f3806106f8f3ce13401cc1

SHA1
6005fbe17f6e917ac45317552409d7a60976db14

SHA256
f2f3ae8ca06f5cf320ca1d234a623bf55cf2b84c1d6dea3d85d5392e29aaf437

SHA512
97933227b6002127385ace025f85a26358e47ee79c883f03180d474c15dbaf28a88492c8e53aefc0d305872edd27db0b4468da13e6f0337988f58d2ee35fd797

Download Submit
C:\Windows\Installer\MSI20F1.tmp
Filesize
91KB

MD5
5c5bef05b6f3806106f8f3ce13401cc1

SHA1
6005fbe17f6e917ac45317552409d7a60976db14

SHA256
f2f3ae8ca06f5cf320ca1d234a623bf55cf2b84c1d6dea3d85d5392e29aaf437

SHA512
97933227b6002127385ace025f85a26358e47ee79c883f03180d474c15dbaf28a88492c8e53aefc0d305872edd27db0b4468da13e6f0337988f58d2ee35fd797

Download Submit
C:\Windows\Installer\MSI243D.tmp
Filesize
91KB

MD5
5c5bef05b6f3806106f8f3ce13401cc1

SHA1
6005fbe17f6e917ac45317552409d7a60976db14

SHA256
f2f3ae8ca06f5cf320ca1d234a623bf55cf2b84c1d6dea3d85d5392e29aaf437

SHA512
97933227b6002127385ace025f85a26358e47ee79c883f03180d474c15dbaf28a88492c8e53aefc0d305872edd27db0b4468da13e6f0337988f58d2ee35fd797

Download Submit
C:\Windows\Installer\MSI243D.tmp
Filesize
91KB

MD5
5c5bef05b6f3806106f8f3ce13401cc1

SHA1
6005fbe17f6e917ac45317552409d7a60976db14

SHA256
f2f3ae8ca06f5cf320ca1d234a623bf55cf2b84c1d6dea3d85d5392e29aaf437

SHA512
97933227b6002127385ace025f85a26358e47ee79c883f03180d474c15dbaf28a88492c8e53aefc0d305872edd27db0b4468da13e6f0337988f58d2ee35fd797

Download Submit