xpertrat | 2d0474bfb8aced6c0aacc081936209dc9287827e20284160ceae3edca8a50184

General

Target

Specification.exe
Size

717KB
MD5

20796a16b1839afba1f87ed53e7bd841
SHA1

d5bd0d0efc2059dbbf1eaaa30b1c859c313d9250
SHA256

2d0474bfb8aced6c0aacc081936209dc9287827e20284160ceae3edca8a50184
SHA512

ad809362c428bdd0d30f56e4fe8f4bfd7960849575451b33c642d5fc7d424e7eb355ec3caba95f02040a80d505db4f04edf363dd7dbdbe79df94ccb22dbce09f

Score

10^/10

xpertrat 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

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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	iexplore.exe
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

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-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Specification.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-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ftirj = "\"C:\\Users\\Admin\\AppData\\Roaming\\Vcwewugzx\\Ftirj.exe\""	Specification.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\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

Suspicious use of SetThreadContext 2 IoCs

Processes:

Specification.exeInstallUtil.exe

description	pid	Process	procid_target
PID 4908 set thread context of 3644	4908	Specification.exe	91
PID 3644 set thread context of 3584	3644	InstallUtil.exe	92

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 16 IoCs

Processes:

powershell.exeSpecification.exeInstallUtil.exe

pid	Process
740	powershell.exe
740	powershell.exe
4908	Specification.exe
4908	Specification.exe
4908	Specification.exe
4908	Specification.exe
4908	Specification.exe
4908	Specification.exe
4908	Specification.exe
4908	Specification.exe
4908	Specification.exe
4908	Specification.exe
3644	InstallUtil.exe
3644	InstallUtil.exe
3644	InstallUtil.exe
3644	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Specification.exepowershell.exeiexplore.exe

description	pid	Process
Token: SeDebugPrivilege	4908	Specification.exe
Token: SeDebugPrivilege	740	powershell.exe
Token: SeDebugPrivilege	3584	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

InstallUtil.exeiexplore.exe

pid	Process
3644	InstallUtil.exe
3584	iexplore.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

Specification.exeInstallUtil.exe

description	pid	Process	procid_target
PID 4908 wrote to memory of 740	4908	Specification.exe	80
PID 4908 wrote to memory of 740	4908	Specification.exe	80
PID 4908 wrote to memory of 740	4908	Specification.exe	80
PID 4908 wrote to memory of 4980	4908	Specification.exe	89
PID 4908 wrote to memory of 4980	4908	Specification.exe	89
PID 4908 wrote to memory of 4980	4908	Specification.exe	89
PID 4908 wrote to memory of 4668	4908	Specification.exe	90
PID 4908 wrote to memory of 4668	4908	Specification.exe	90
PID 4908 wrote to memory of 4668	4908	Specification.exe	90
PID 4908 wrote to memory of 3644	4908	Specification.exe	91
PID 4908 wrote to memory of 3644	4908	Specification.exe	91
PID 4908 wrote to memory of 3644	4908	Specification.exe	91
PID 4908 wrote to memory of 3644	4908	Specification.exe	91
PID 4908 wrote to memory of 3644	4908	Specification.exe	91
PID 4908 wrote to memory of 3644	4908	Specification.exe	91
PID 4908 wrote to memory of 3644	4908	Specification.exe	91
PID 3644 wrote to memory of 3584	3644	InstallUtil.exe	92
PID 3644 wrote to memory of 3584	3644	InstallUtil.exe	92
PID 3644 wrote to memory of 3584	3644	InstallUtil.exe	92
PID 3644 wrote to memory of 3584	3644	InstallUtil.exe	92
PID 3644 wrote to memory of 3584	3644	InstallUtil.exe	92
PID 3644 wrote to memory of 3584	3644	InstallUtil.exe	92
PID 3644 wrote to memory of 3584	3644	InstallUtil.exe	92
PID 3644 wrote to memory of 3584	3644	InstallUtil.exe	92

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:4908
- 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:740
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  PID:4980
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  PID:4668
- 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:3644
- - 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 AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3584

Network

MITRE ATT&CK Enterprise 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

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/740-140-0x0000000006230000-0x000000000624E000-memory.dmp

Filesize
120KB

Download
memory/740-137-0x0000000005150000-0x0000000005172000-memory.dmp

Filesize
136KB

Download
memory/740-138-0x0000000005A40000-0x0000000005AA6000-memory.dmp

Filesize
408KB

Download
memory/740-139-0x0000000005B20000-0x0000000005B86000-memory.dmp

Filesize
408KB

Download
memory/740-134-0x0000000000000000-mapping.dmp

Download
memory/740-135-0x0000000002C70000-0x0000000002CA6000-memory.dmp

Filesize
216KB

Download
memory/740-136-0x0000000005410000-0x0000000005A38000-memory.dmp

Filesize
6.2MB

Download
memory/740-142-0x0000000006710000-0x000000000672A000-memory.dmp

Filesize
104KB

Download
memory/740-141-0x0000000007A70000-0x00000000080EA000-memory.dmp

Filesize
6.5MB

Download
memory/3644-148-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3644-152-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3644-145-0x0000000000000000-mapping.dmp

Download
memory/3644-146-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3644-151-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4668-144-0x0000000000000000-mapping.dmp

Download
memory/4908-131-0x0000000005710000-0x0000000005CB4000-memory.dmp

Filesize
5.6MB

Download
memory/4908-130-0x0000000000730000-0x00000000007E8000-memory.dmp

Filesize
736KB

Download
memory/4908-133-0x0000000005180000-0x000000000518A000-memory.dmp

Filesize
40KB

Download
memory/4908-132-0x0000000005200000-0x0000000005292000-memory.dmp

Filesize
584KB

Download
memory/4980-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads