xpertrat | f8e52fa75724eb08c0ec68db6799740ad36c7178b8f0dd7c8b0ee755ff60c653

Analysis

max time kernel
55s
max time network
138s
platform
windows7_x64
resource
win7v20210408
submitted
26-04-2021 06:47

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General

Target

95a3b26416f41375ef06106fb58a3764.exe
Size

807KB
MD5

95a3b26416f41375ef06106fb58a3764
SHA1

952f57980d5105d94bc2e0ae389f0cc7e44ae27d
SHA256

f8e52fa75724eb08c0ec68db6799740ad36c7178b8f0dd7c8b0ee755ff60c653
SHA512

160e9dd666333b81c9685a21fd7620b499e9973743b637d4f52a30567c1a81fcc9cba4a984e9c1715dd9d36993034ec0697c36327803754ef725eb6d86e991b8

Score

10^/10

xpertrat xxx evasion persistence rat trojan upx

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

XXX

kapasky-antivirus.firewall-gateway.net:2054

kapasky-antivirus.firewall-gateway.net:4000

Mutex

U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7

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/1028-71-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat
behavioral1/memory/1028-72-0x0000000000401364-mapping.dmp	xpertrat

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/1648-81-0x0000000000411654-mapping.dmp	MailPassView
behavioral1/memory/1648-80-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/1472-84-0x0000000000442F04-mapping.dmp	WebBrowserPassView
behavioral1/memory/1472-83-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView

Nirsoft 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1648-81-0x0000000000411654-mapping.dmp	Nirsoft
behavioral1/memory/1648-80-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral1/memory/1472-84-0x0000000000442F04-mapping.dmp	Nirsoft
behavioral1/memory/1472-83-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral1/memory/1804-92-0x0000000000400000-0x0000000000415000-memory.dmp	Nirsoft
behavioral1/memory/1804-93-0x000000000040C2A8-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\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7 = "C:\\Users\\Admin\\AppData\\Roaming\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.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/572-77-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/1148-89-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

95a3b26416f41375ef06106fb58a3764.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	95a3b26416f41375ef06106fb58a3764.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-1-5-21-2455352368-1077083310-2879168483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7 = "C:\\Users\\Admin\\AppData\\Roaming\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.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\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7 = "C:\\Users\\Admin\\AppData\\Roaming\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe"	iexplore.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

95a3b26416f41375ef06106fb58a3764.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	95a3b26416f41375ef06106fb58a3764.exe

Suspicious use of SetThreadContext 8 IoCs

Processes:

95a3b26416f41375ef06106fb58a3764.exe95a3b26416f41375ef06106fb58a3764.exeiexplore.exe

description	pid	process	target process
PID 1652 set thread context of 1628	1652	95a3b26416f41375ef06106fb58a3764.exe	95a3b26416f41375ef06106fb58a3764.exe
PID 1628 set thread context of 1028	1628	95a3b26416f41375ef06106fb58a3764.exe	iexplore.exe
PID 1028 set thread context of 572	1028	iexplore.exe	iexplore.exe
PID 1028 set thread context of 1648	1028	iexplore.exe	iexplore.exe
PID 1028 set thread context of 1472	1028	iexplore.exe	iexplore.exe
PID 1028 set thread context of 664	1028	iexplore.exe	iexplore.exe
PID 1028 set thread context of 1148	1028	iexplore.exe	iexplore.exe
PID 1028 set thread context of 1804	1028	iexplore.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

95a3b26416f41375ef06106fb58a3764.exe

pid process

1628 95a3b26416f41375ef06106fb58a3764.exe
1628 95a3b26416f41375ef06106fb58a3764.exe
1628 95a3b26416f41375ef06106fb58a3764.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

iexplore.exeiexplore.exe

description pid process

Token: SeDebugPrivilege 1028 iexplore.exe
Token: SeDebugPrivilege 572 iexplore.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

95a3b26416f41375ef06106fb58a3764.exeiexplore.exe

pid process

1628 95a3b26416f41375ef06106fb58a3764.exe
1028 iexplore.exe

pid	process
1628	95a3b26416f41375ef06106fb58a3764.exe
1628	95a3b26416f41375ef06106fb58a3764.exe
1628	95a3b26416f41375ef06106fb58a3764.exe

description	pid	process
Token: SeDebugPrivilege	1028	iexplore.exe
Token: SeDebugPrivilege	572	iexplore.exe

pid	process
1628	95a3b26416f41375ef06106fb58a3764.exe
1028	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

95a3b26416f41375ef06106fb58a3764.exe95a3b26416f41375ef06106fb58a3764.exeiexplore.exe

description	pid	process	target process
PID 1652 wrote to memory of 1628	1652	95a3b26416f41375ef06106fb58a3764.exe	95a3b26416f41375ef06106fb58a3764.exe
PID 1652 wrote to memory of 1628	1652	95a3b26416f41375ef06106fb58a3764.exe	95a3b26416f41375ef06106fb58a3764.exe
PID 1652 wrote to memory of 1628	1652	95a3b26416f41375ef06106fb58a3764.exe	95a3b26416f41375ef06106fb58a3764.exe
PID 1652 wrote to memory of 1628	1652	95a3b26416f41375ef06106fb58a3764.exe	95a3b26416f41375ef06106fb58a3764.exe
PID 1652 wrote to memory of 1628	1652	95a3b26416f41375ef06106fb58a3764.exe	95a3b26416f41375ef06106fb58a3764.exe
PID 1652 wrote to memory of 1628	1652	95a3b26416f41375ef06106fb58a3764.exe	95a3b26416f41375ef06106fb58a3764.exe
PID 1652 wrote to memory of 1628	1652	95a3b26416f41375ef06106fb58a3764.exe	95a3b26416f41375ef06106fb58a3764.exe
PID 1652 wrote to memory of 1628	1652	95a3b26416f41375ef06106fb58a3764.exe	95a3b26416f41375ef06106fb58a3764.exe
PID 1628 wrote to memory of 1028	1628	95a3b26416f41375ef06106fb58a3764.exe	iexplore.exe
PID 1628 wrote to memory of 1028	1628	95a3b26416f41375ef06106fb58a3764.exe	iexplore.exe
PID 1628 wrote to memory of 1028	1628	95a3b26416f41375ef06106fb58a3764.exe	iexplore.exe
PID 1628 wrote to memory of 1028	1628	95a3b26416f41375ef06106fb58a3764.exe	iexplore.exe
PID 1628 wrote to memory of 1028	1628	95a3b26416f41375ef06106fb58a3764.exe	iexplore.exe
PID 1628 wrote to memory of 1028	1628	95a3b26416f41375ef06106fb58a3764.exe	iexplore.exe
PID 1628 wrote to memory of 1028	1628	95a3b26416f41375ef06106fb58a3764.exe	iexplore.exe
PID 1628 wrote to memory of 1028	1628	95a3b26416f41375ef06106fb58a3764.exe	iexplore.exe
PID 1628 wrote to memory of 1028	1628	95a3b26416f41375ef06106fb58a3764.exe	iexplore.exe
PID 1028 wrote to memory of 572	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 572	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 572	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 572	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 572	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 572	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 572	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 572	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 572	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1648	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1648	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1648	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1648	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1648	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1648	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1648	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1648	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1648	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1648	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1472	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1472	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1472	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1472	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1472	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1472	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1472	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1472	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1472	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1472	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 664	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 664	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 664	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 664	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 664	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 664	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 664	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 664	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 664	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1148	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1148	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1148	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1148	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1148	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1148	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1148	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1148	1028	iexplore.exe	iexplore.exe
PID 1028 wrote to memory of 1148	1028	iexplore.exe	iexplore.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

95a3b26416f41375ef06106fb58a3764.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	95a3b26416f41375ef06106fb58a3764.exe

C:\Users\Admin\AppData\Local\Temp\95a3b26416f41375ef06106fb58a3764.exe
"C:\Users\Admin\AppData\Local\Temp\95a3b26416f41375ef06106fb58a3764.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1652

C:\Users\Admin\AppData\Local\Temp\95a3b26416f41375ef06106fb58a3764.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:1628

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\95a3b26416f41375ef06106fb58a3764.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:1028

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\vbeybmbcn0.txt"
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:572

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\vbeybmbcn1.txt"
4⤵
PID:1648

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\vbeybmbcn2.txt"
4⤵
PID:1472

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\vbeybmbcn3.txt"
4⤵
PID:664

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\vbeybmbcn3.txt"
4⤵
PID:1148

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\vbeybmbcn4.txt"
4⤵
PID:1804

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\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\vbeybmbcn2.txt

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\vbeybmbcn4.txt

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/572-78-0x0000000000423BC0-mapping.dmp

Download
memory/572-77-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/664-88-0x0000000000413750-mapping.dmp

Download
memory/1028-71-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/1028-72-0x0000000000401364-mapping.dmp

Download
memory/1028-73-0x0000000000830000-0x0000000000983000-memory.dmp

Filesize
1.3MB

Download
memory/1028-76-0x00000000754F1000-0x00000000754F3000-memory.dmp

Filesize
8KB

Download
memory/1148-90-0x0000000000413750-mapping.dmp

Download
memory/1148-89-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1472-84-0x0000000000442F04-mapping.dmp

Download
memory/1472-83-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1628-67-0x00000000004010B8-mapping.dmp

Download
memory/1628-66-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1648-81-0x0000000000411654-mapping.dmp

Download
memory/1648-80-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1652-63-0x00000000003C0000-0x00000000003CE000-memory.dmp

Filesize
56KB

Download
memory/1652-60-0x0000000001160000-0x0000000001161000-memory.dmp

Filesize
4KB

Download
memory/1652-64-0x00000000056F0000-0x000000000576F000-memory.dmp

Filesize
508KB

Download
memory/1652-65-0x0000000000600000-0x0000000000630000-memory.dmp

Filesize
192KB

Download
memory/1652-62-0x0000000004D60000-0x0000000004D61000-memory.dmp

Filesize
4KB

Download
memory/1804-92-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1804-93-0x000000000040C2A8-mapping.dmp

Download