xpertrat | 6b22261ef9a97fde0923ffe05c7aa8317fd3b0e27c10fbc967f9961a5f39c105

General

Target

svchost.exe
Size

776KB
MD5

414ad28c17f6b49a2f825ffc49dbae02
SHA1

43a194b57fbaab18ee206adb1d16690c887f0734
SHA256

6b22261ef9a97fde0923ffe05c7aa8317fd3b0e27c10fbc967f9961a5f39c105
SHA512

dde4855ebd23feb43c60e7dad21883867d97abe481dae2086933fc9f270d69a1ffe7506ba4e9b3c1a9ab93630fa6c9224a1d1918d8c6d77c47c4aad56823ffff

Score

10^/10

xpertrat bxk evasion persistence rat trojan

Malware Config

Extracted

Family

xpertrat

Version

3.1.9

Botnet

BXK

C2

ioxg.ix.tc:4000

Mutex

R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6

Signatures

UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
XpertRAT
XpertRAT is a remote access trojan with various capabilities.
rat xpertrat

XpertRAT Core Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/656-71-0x0000000000400000-0x0000000000444000-memory.dmp	xpertrat
behavioral1/memory/656-72-0x0000000000401364-mapping.dmp	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\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6 = "C:\\Users\\Admin\\AppData\\Roaming\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6.exe"	iexplore.exe

Windows security modification 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

svchost.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0" svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	svchost.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplore.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6 = "C:\\Users\\Admin\\AppData\\Roaming\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6.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\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6 = "C:\\Users\\Admin\\AppData\\Roaming\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6.exe"	iexplore.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

svchost.exe

description ioc process

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

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

svchost.exesvchost.exe

description	pid	process	target process
PID 1816 set thread context of 1652	1816	svchost.exe	svchost.exe
PID 1652 set thread context of 656	1652	svchost.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

svchost.exe

pid process

1652 svchost.exe
1652 svchost.exe
1652 svchost.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

iexplore.exe

description pid process

Token: SeDebugPrivilege 656 iexplore.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

svchost.exeiexplore.exe

pid process

1652 svchost.exe
656 iexplore.exe

pid	process
1652	svchost.exe
1652	svchost.exe
1652	svchost.exe

description	pid	process
Token: SeDebugPrivilege	656	iexplore.exe

pid	process
1652	svchost.exe
656	iexplore.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

svchost.exesvchost.exe

description	pid	process	target process
PID 1816 wrote to memory of 1652	1816	svchost.exe	svchost.exe
PID 1816 wrote to memory of 1652	1816	svchost.exe	svchost.exe
PID 1816 wrote to memory of 1652	1816	svchost.exe	svchost.exe
PID 1816 wrote to memory of 1652	1816	svchost.exe	svchost.exe
PID 1816 wrote to memory of 1652	1816	svchost.exe	svchost.exe
PID 1816 wrote to memory of 1652	1816	svchost.exe	svchost.exe
PID 1816 wrote to memory of 1652	1816	svchost.exe	svchost.exe
PID 1816 wrote to memory of 1652	1816	svchost.exe	svchost.exe
PID 1652 wrote to memory of 656	1652	svchost.exe	iexplore.exe
PID 1652 wrote to memory of 656	1652	svchost.exe	iexplore.exe
PID 1652 wrote to memory of 656	1652	svchost.exe	iexplore.exe
PID 1652 wrote to memory of 656	1652	svchost.exe	iexplore.exe
PID 1652 wrote to memory of 656	1652	svchost.exe	iexplore.exe
PID 1652 wrote to memory of 656	1652	svchost.exe	iexplore.exe
PID 1652 wrote to memory of 656	1652	svchost.exe	iexplore.exe
PID 1652 wrote to memory of 656	1652	svchost.exe	iexplore.exe
PID 1652 wrote to memory of 656	1652	svchost.exe	iexplore.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

svchost.exe

description ioc process

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

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

C:\Users\Admin\AppData\Local\Temp\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\svchost.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1816

C:\Users\Admin\AppData\Local\Temp\svchost.exe
"{path}"
2⤵
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1652

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\svchost.exe
3⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:656

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/656-71-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/656-72-0x0000000000401364-mapping.dmp

Download
memory/656-73-0x0000000000730000-0x0000000000883000-memory.dmp

Filesize
1.3MB

Download
memory/1652-67-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1652-68-0x00000000004010B8-mapping.dmp

Download
memory/1816-60-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/1816-62-0x0000000075631000-0x0000000075633000-memory.dmp

Filesize
8KB

Download
memory/1816-63-0x0000000002280000-0x0000000002281000-memory.dmp

Filesize
4KB

Download
memory/1816-64-0x00000000001E0000-0x00000000001E2000-memory.dmp

Filesize
8KB

Download
memory/1816-65-0x0000000007F60000-0x0000000008008000-memory.dmp

Filesize
672KB

Download
memory/1816-66-0x0000000004670000-0x00000000046CA000-memory.dmp

Filesize
360KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads