xpertrat | 59d18f1afca7fa22d68455d412c29949993c21edfb3658091bdad62093e0f818

Analysis

max time kernel
122s
max time network
140s
platform
windows7_x64
resource
win7v20210410
submitted
13-07-2021 12:58

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General

Target

704ce624d4906a3cf343562b90249b58.exe
Size

759KB
MD5

704ce624d4906a3cf343562b90249b58
SHA1

c007c6fb7c85795c2cdf5b2171392dedf72a5c9e
SHA256

59d18f1afca7fa22d68455d412c29949993c21edfb3658091bdad62093e0f818
SHA512

d3c285ce095cb72dc4fb7de298bc59235ed727bb99fbe0c0eea7f4aea53b4270d707ae164866dc18eef268375b3f683e7506f3582210b59d0e1fdf6aac8e1f08

Score

10^/10

xpertrat bxk evasion persistence rat trojan upx

Malware Config

Extracted

Family

xpertrat

Version

3.1.9

Botnet

BXK

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/412-73-0x0000000000400000-0x0000000000444000-memory.dmp	xpertrat
behavioral1/memory/972-77-0x0000000000401364-mapping.dmp	xpertrat

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/316-87-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView
behavioral1/memory/316-88-0x0000000000411654-mapping.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/1312-90-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView
behavioral1/memory/1312-91-0x0000000000442F04-mapping.dmp	WebBrowserPassView

Nirsoft 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/316-87-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral1/memory/316-88-0x0000000000411654-mapping.dmp	Nirsoft
behavioral1/memory/1312-90-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral1/memory/1312-91-0x0000000000442F04-mapping.dmp	Nirsoft
behavioral1/memory/1468-97-0x0000000000400000-0x0000000000415000-memory.dmp	Nirsoft
behavioral1/memory/1468-98-0x000000000040C2A8-mapping.dmp	Nirsoft

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

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1044-82-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/1724-94-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

704ce624d4906a3cf343562b90249b58.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	704ce624d4906a3cf343562b90249b58.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:

704ce624d4906a3cf343562b90249b58.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	704ce624d4906a3cf343562b90249b58.exe

Suspicious use of SetThreadContext 9 IoCs

Processes:

704ce624d4906a3cf343562b90249b58.exe704ce624d4906a3cf343562b90249b58.exeiexplore.exe

description	pid	process	target process
PID 748 set thread context of 1632	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 1632 set thread context of 412	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 set thread context of 972	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 972 set thread context of 1044	972	iexplore.exe	iexplore.exe
PID 972 set thread context of 1656	972	iexplore.exe	iexplore.exe
PID 972 set thread context of 316	972	iexplore.exe	iexplore.exe
PID 972 set thread context of 1312	972	iexplore.exe	iexplore.exe
PID 972 set thread context of 1724	972	iexplore.exe	iexplore.exe
PID 972 set thread context of 1468	972	iexplore.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

704ce624d4906a3cf343562b90249b58.exe704ce624d4906a3cf343562b90249b58.exe

pid	process
748	704ce624d4906a3cf343562b90249b58.exe
748	704ce624d4906a3cf343562b90249b58.exe
748	704ce624d4906a3cf343562b90249b58.exe
748	704ce624d4906a3cf343562b90249b58.exe
748	704ce624d4906a3cf343562b90249b58.exe
748	704ce624d4906a3cf343562b90249b58.exe
1632	704ce624d4906a3cf343562b90249b58.exe
1632	704ce624d4906a3cf343562b90249b58.exe
1632	704ce624d4906a3cf343562b90249b58.exe
1632	704ce624d4906a3cf343562b90249b58.exe
1632	704ce624d4906a3cf343562b90249b58.exe
1632	704ce624d4906a3cf343562b90249b58.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

704ce624d4906a3cf343562b90249b58.exeiexplore.exeiexplore.exe

description	pid	process
Token: SeDebugPrivilege	748	704ce624d4906a3cf343562b90249b58.exe
Token: SeDebugPrivilege	972	iexplore.exe
Token: SeDebugPrivilege	1044	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

704ce624d4906a3cf343562b90249b58.exeiexplore.exe

pid process

1632 704ce624d4906a3cf343562b90249b58.exe
972 iexplore.exe

pid	process
1632	704ce624d4906a3cf343562b90249b58.exe
972	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

704ce624d4906a3cf343562b90249b58.exe704ce624d4906a3cf343562b90249b58.exeiexplore.exe

description	pid	process	target process
PID 748 wrote to memory of 1260	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 748 wrote to memory of 1260	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 748 wrote to memory of 1260	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 748 wrote to memory of 1260	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 748 wrote to memory of 1632	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 748 wrote to memory of 1632	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 748 wrote to memory of 1632	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 748 wrote to memory of 1632	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 748 wrote to memory of 1632	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 748 wrote to memory of 1632	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 748 wrote to memory of 1632	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 748 wrote to memory of 1632	748	704ce624d4906a3cf343562b90249b58.exe	704ce624d4906a3cf343562b90249b58.exe
PID 1632 wrote to memory of 412	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 412	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 412	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 412	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 412	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 412	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 412	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 412	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 412	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 972	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 972	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 972	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 972	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 972	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 972	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 972	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 972	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 1632 wrote to memory of 972	1632	704ce624d4906a3cf343562b90249b58.exe	iexplore.exe
PID 972 wrote to memory of 1044	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1044	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1044	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1044	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1044	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1044	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1044	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1044	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1044	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1656	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1656	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1656	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1656	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1656	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1656	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1656	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1656	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1656	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1656	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 316	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 316	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 316	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 316	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 316	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 316	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 316	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 316	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 316	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 316	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1312	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1312	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1312	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1312	972	iexplore.exe	iexplore.exe
PID 972 wrote to memory of 1312	972	iexplore.exe	iexplore.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

704ce624d4906a3cf343562b90249b58.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	704ce624d4906a3cf343562b90249b58.exe

C:\Users\Admin\AppData\Local\Temp\704ce624d4906a3cf343562b90249b58.exe
"C:\Users\Admin\AppData\Local\Temp\704ce624d4906a3cf343562b90249b58.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:748

C:\Users\Admin\AppData\Local\Temp\704ce624d4906a3cf343562b90249b58.exe
C:\Users\Admin\AppData\Local\Temp\704ce624d4906a3cf343562b90249b58.exe
2⤵
PID:1260

C:\Users\Admin\AppData\Local\Temp\704ce624d4906a3cf343562b90249b58.exe
C:\Users\Admin\AppData\Local\Temp\704ce624d4906a3cf343562b90249b58.exe
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:1632

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\704ce624d4906a3cf343562b90249b58.exe
3⤵
PID:412

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\704ce624d4906a3cf343562b90249b58.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:972

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\vkknnhyqc0.txt"
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1044

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\vkknnhyqc1.txt"
4⤵
PID:1656

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\vkknnhyqc1.txt"
4⤵
PID:316

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\vkknnhyqc2.txt"
4⤵
PID:1312

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\vkknnhyqc3.txt"
4⤵
PID:1724

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\vkknnhyqc4.txt"
4⤵
PID:1468

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\vkknnhyqc2.txt

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\vkknnhyqc4.txt

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/316-87-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/316-88-0x0000000000411654-mapping.dmp

Download
memory/412-74-0x0000000000401364-mapping.dmp

Download
memory/412-73-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/748-68-0x0000000005BB0000-0x0000000005C17000-memory.dmp

Filesize
412KB

Download
memory/748-63-0x0000000000620000-0x000000000067F000-memory.dmp

Filesize
380KB

Download
memory/748-62-0x0000000004EE0000-0x0000000004EE1000-memory.dmp

Filesize
4KB

Download
memory/748-75-0x0000000004EE5000-0x0000000004EF6000-memory.dmp

Filesize
68KB

Download
memory/748-59-0x00000000010D0000-0x00000000010D1000-memory.dmp

Filesize
4KB

Download
memory/748-61-0x0000000076661000-0x0000000076663000-memory.dmp

Filesize
8KB

Download
memory/972-77-0x0000000000401364-mapping.dmp

Download
memory/972-78-0x0000000000450000-0x00000000005A3000-memory.dmp

Filesize
1.3MB

Download
memory/1044-83-0x0000000000423BC0-mapping.dmp

Download
memory/1044-82-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1312-91-0x0000000000442F04-mapping.dmp

Download
memory/1312-90-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1468-97-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1468-98-0x000000000040C2A8-mapping.dmp

Download
memory/1632-70-0x00000000004010B8-mapping.dmp

Download
memory/1632-69-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1656-86-0x0000000000411654-mapping.dmp

Download
memory/1724-94-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1724-95-0x0000000000413750-mapping.dmp

Download