xpertrat | 2d0474bfb8aced6c0aacc081936209dc9287827e20284160ceae3edca8a50184

General

Target

Specification.exe
Size

717KB
MD5

20796a16b1839afba1f87ed53e7bd841
SHA1

d5bd0d0efc2059dbbf1eaaa30b1c859c313d9250
SHA256

2d0474bfb8aced6c0aacc081936209dc9287827e20284160ceae3edca8a50184
SHA512

ad809362c428bdd0d30f56e4fe8f4bfd7960849575451b33c642d5fc7d424e7eb355ec3caba95f02040a80d505db4f04edf363dd7dbdbe79df94ccb22dbce09f

Score

10^/10

xpertrat collection evasion persistence rat trojan

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

InstallUtil.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" InstallUtil.exe
Windows security bypass 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

InstallUtil.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0" InstallUtil.exe
XpertRAT
XpertRAT is a remote access trojan with various capabilities.
rat xpertrat

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	InstallUtil.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	InstallUtil.exe

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4 = "C:\\Users\\Admin\\AppData\\Roaming\\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4.exe"	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	iexplore.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Specification.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	Specification.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

iexplore.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	iexplore.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Specification.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ftirj = "\"C:\\Users\\Admin\\AppData\\Roaming\\Vcwewugzx\\Ftirj.exe\""	Specification.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4 = "C:\\Users\\Admin\\AppData\\Roaming\\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4.exe"	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4 = "C:\\Users\\Admin\\AppData\\Roaming\\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4.exe"	iexplore.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

804 4988 WerFault.exe iexplore.exe
4280 2108 WerFault.exe iexplore.exe

pid	pid_target	process	target process
804	4988	WerFault.exe	iexplore.exe
4280	2108	WerFault.exe	iexplore.exe

Suspicious use of SetThreadContext 9 IoCs

Processes:

Specification.exeInstallUtil.exeiexplore.exe

description	pid	process	target process
PID 3888 set thread context of 4164	3888	Specification.exe	InstallUtil.exe
PID 4164 set thread context of 4988	4164	InstallUtil.exe	iexplore.exe
PID 4164 set thread context of 3912	4164	InstallUtil.exe	iexplore.exe
PID 3912 set thread context of 5116	3912	iexplore.exe	iexplore.exe
PID 3912 set thread context of 2108	3912	iexplore.exe	iexplore.exe
PID 3912 set thread context of 4628	3912	iexplore.exe	iexplore.exe
PID 3912 set thread context of 5048	3912	iexplore.exe	iexplore.exe
PID 3912 set thread context of 1316	3912	iexplore.exe	iexplore.exe
PID 3912 set thread context of 3696	3912	iexplore.exe	iexplore.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

powershell.exeSpecification.exeInstallUtil.exeiexplore.exeiexplore.exe

pid	process
800	powershell.exe
800	powershell.exe
3888	Specification.exe
3888	Specification.exe
4164	InstallUtil.exe
4164	InstallUtil.exe
4164	InstallUtil.exe
4164	InstallUtil.exe
4164	InstallUtil.exe
4164	InstallUtil.exe
5116	iexplore.exe
5116	iexplore.exe
5048	iexplore.exe
5048	iexplore.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Specification.exepowershell.exeiexplore.exeiexplore.exe

description	pid	process
Token: SeDebugPrivilege	3888	Specification.exe
Token: SeDebugPrivilege	800	powershell.exe
Token: SeDebugPrivilege	3912	iexplore.exe
Token: SeDebugPrivilege	5116	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

InstallUtil.exeiexplore.exe

pid process

4164 InstallUtil.exe
3912 iexplore.exe

pid	process
4164	InstallUtil.exe
3912	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

Specification.exeInstallUtil.exeiexplore.exe

description	pid	process	target process
PID 3888 wrote to memory of 800	3888	Specification.exe	powershell.exe
PID 3888 wrote to memory of 800	3888	Specification.exe	powershell.exe
PID 3888 wrote to memory of 800	3888	Specification.exe	powershell.exe
PID 3888 wrote to memory of 4164	3888	Specification.exe	InstallUtil.exe
PID 3888 wrote to memory of 4164	3888	Specification.exe	InstallUtil.exe
PID 3888 wrote to memory of 4164	3888	Specification.exe	InstallUtil.exe
PID 3888 wrote to memory of 4164	3888	Specification.exe	InstallUtil.exe
PID 3888 wrote to memory of 4164	3888	Specification.exe	InstallUtil.exe
PID 3888 wrote to memory of 4164	3888	Specification.exe	InstallUtil.exe
PID 3888 wrote to memory of 4164	3888	Specification.exe	InstallUtil.exe
PID 4164 wrote to memory of 4988	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 4988	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 4988	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 4988	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 4988	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 4988	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 4988	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 4988	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 3912	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 3912	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 3912	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 3912	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 3912	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 3912	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 3912	4164	InstallUtil.exe	iexplore.exe
PID 4164 wrote to memory of 3912	4164	InstallUtil.exe	iexplore.exe
PID 3912 wrote to memory of 5116	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5116	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5116	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5116	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5116	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5116	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5116	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5116	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 2108	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 2108	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 2108	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 2108	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 2108	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 2108	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 2108	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 2108	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 2108	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 4628	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 4628	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 4628	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 4628	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 4628	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 4628	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 4628	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 4628	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 4628	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5048	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5048	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5048	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5048	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5048	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5048	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5048	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5048	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 5048	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 1316	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 1316	3912	iexplore.exe	iexplore.exe
PID 3912 wrote to memory of 1316	3912	iexplore.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\Specification.exe
"C:\Users\Admin\AppData\Local\Temp\Specification.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3888

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:800

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
- UAC bypass
- Windows security bypass
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4164

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
3⤵
PID:4988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 84
4⤵
- Program crash
PID:804

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
3⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3912

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\guhwiinsm0.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5116

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\guhwiinsm1.txt"
4⤵
PID:2108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2108 -s 12
5⤵
- Program crash
PID:4280

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\guhwiinsm1.txt"
4⤵
- Accesses Microsoft Outlook accounts
PID:4628

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\guhwiinsm2.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:5048

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\guhwiinsm3.txt"
4⤵
PID:1316

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\guhwiinsm4.txt"
4⤵
PID:3696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4988 -ip 4988
1⤵
PID:464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2108 -ip 2108
1⤵
PID:4328

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

2

T1089

Modify Registry

4

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\guhwiinsm2.txt
Filesize
3KB

MD5
f94dc819ca773f1e3cb27abbc9e7fa27

SHA1
9a7700efadc5ea09ab288544ef1e3cd876255086

SHA256
a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

SHA512
72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

Download Submit
C:\Users\Admin\AppData\Roaming\Y1F5W2I0-W6V4-G5S1-T8J1-U5Y8L0K337W4\guhwiinsm4.txt
Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/800-138-0x0000000005AF0000-0x0000000005B56000-memory.dmp

Filesize
408KB

Download
memory/800-141-0x0000000007830000-0x0000000007EAA000-memory.dmp

Filesize
6.5MB

Download
memory/800-134-0x0000000000000000-mapping.dmp

Download
memory/800-135-0x0000000004C20000-0x0000000004C56000-memory.dmp

Filesize
216KB

Download
memory/800-136-0x0000000005290000-0x00000000058B8000-memory.dmp

Filesize
6.2MB

Download
memory/800-137-0x0000000005110000-0x0000000005132000-memory.dmp

Filesize
136KB

Download
memory/800-142-0x00000000066E0000-0x00000000066FA000-memory.dmp

Filesize
104KB

Download
memory/800-139-0x0000000005BD0000-0x0000000005C36000-memory.dmp

Filesize
408KB

Download
memory/800-140-0x00000000061E0000-0x00000000061FE000-memory.dmp

Filesize
120KB

Download
memory/3888-133-0x0000000005610000-0x000000000561A000-memory.dmp

Filesize
40KB

Download
memory/3888-130-0x0000000000BD0000-0x0000000000C88000-memory.dmp

Filesize
736KB

Download
memory/3888-132-0x0000000005630000-0x00000000056C2000-memory.dmp

Filesize
584KB

Download
memory/3888-131-0x0000000005CF0000-0x0000000006294000-memory.dmp

Filesize
5.6MB

Download
memory/4164-143-0x0000000000000000-mapping.dmp

Download
memory/4164-144-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4164-146-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4164-149-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads