xpertrat | e3c5d29533223d5a1cb39c9531bffce0bfbdae3b7335a8b203c034b581dda787

Analysis

max time kernel
17s
max time network
110s
platform
windows10_x64
resource
win10v20201028
submitted
25-12-2020 13:58

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General

Target

xpertee.exe
Size

172KB
MD5

4b448c2f70404c6b0dae7ee65bc2cd96
SHA1

4d10fb4f0f2d092aabe75fefda6b1f8e5081dcb3
SHA256

e3c5d29533223d5a1cb39c9531bffce0bfbdae3b7335a8b203c034b581dda787
SHA512

1e97572d22809adaa684cbf0a2acba4e6f19c93c76937b8b2f45db890607036a712e90bf6250e85658589eddcdbb5fca55b37ebb2692979654a23c6d0fb38570

Score

10^/10

xpertrat special x evasion persistence rat trojan upx

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

special X

papertyy.duckdns.org:4145

ghytrty.duckdns.org:4145

Mutex

G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4

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 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3512-4-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat
behavioral2/memory/3512-5-0x0000000000401364-mapping.dmp	xpertrat
behavioral2/memory/3512-6-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/1004-16-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView
behavioral2/memory/1004-17-0x0000000000411654-mapping.dmp	MailPassView
behavioral2/memory/1004-18-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/888-19-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView
behavioral2/memory/888-20-0x0000000000442F04-mapping.dmp	WebBrowserPassView
behavioral2/memory/888-21-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView

Nirsoft 11 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4400-12-0x0000000000400000-0x0000000000426000-memory.dmp	Nirsoft
behavioral2/memory/1004-16-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/1004-17-0x0000000000411654-mapping.dmp	Nirsoft
behavioral2/memory/1004-18-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/888-19-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/888-20-0x0000000000442F04-mapping.dmp	Nirsoft
behavioral2/memory/888-21-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/1176-26-0x0000000000400000-0x0000000000416000-memory.dmp	Nirsoft
behavioral2/memory/1360-27-0x0000000000400000-0x0000000000415000-memory.dmp	Nirsoft
behavioral2/memory/1360-28-0x000000000040C2A8-mapping.dmp	Nirsoft
behavioral2/memory/1360-29-0x0000000000400000-0x0000000000415000-memory.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\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4 = "C:\\Users\\Admin\\AppData\\Roaming\\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4\\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4.exe"	iexplore.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4400-9-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/4400-11-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/4400-12-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/1176-23-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/1176-25-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/1176-26-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

xpertee.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0" xpertee.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	xpertee.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-1-5-21-3341490333-719741536-2920803124-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4 = "C:\\Users\\Admin\\AppData\\Roaming\\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4\\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4.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\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4 = "C:\\Users\\Admin\\AppData\\Roaming\\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4\\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4.exe"	iexplore.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

xpertee.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" xpertee.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

836 520 WerFault.exe iexplore.exe

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

pid	pid_target	process	target process
836	520	WerFault.exe	iexplore.exe

Suspicious use of SetThreadContext 7 IoCs

Processes:

xpertee.exeiexplore.exe

description	pid	process	target process
PID 4760 set thread context of 3512	4760	xpertee.exe	iexplore.exe
PID 3512 set thread context of 4400	3512	iexplore.exe	iexplore.exe
PID 3512 set thread context of 520	3512	iexplore.exe	iexplore.exe
PID 3512 set thread context of 1004	3512	iexplore.exe	iexplore.exe
PID 3512 set thread context of 888	3512	iexplore.exe	iexplore.exe
PID 3512 set thread context of 1176	3512	iexplore.exe	iexplore.exe
PID 3512 set thread context of 1360	3512	iexplore.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

xpertee.exeiexplore.exeiexplore.exe

pid process

4760 xpertee.exe
4760 xpertee.exe
4760 xpertee.exe
4760 xpertee.exe
4400 iexplore.exe
4400 iexplore.exe
888 iexplore.exe
888 iexplore.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

iexplore.exeiexplore.exe

description pid process

Token: SeDebugPrivilege 3512 iexplore.exe
Token: SeDebugPrivilege 4400 iexplore.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

xpertee.exeiexplore.exe

pid process

4760 xpertee.exe
3512 iexplore.exe

pid	process
4760	xpertee.exe
4760	xpertee.exe
4760	xpertee.exe
4760	xpertee.exe
4400	iexplore.exe
4400	iexplore.exe
888	iexplore.exe
888	iexplore.exe

description	pid	process
Token: SeDebugPrivilege	3512	iexplore.exe
Token: SeDebugPrivilege	4400	iexplore.exe

pid	process
4760	xpertee.exe
3512	iexplore.exe

Suspicious use of WriteProcessMemory 60 IoCs

Processes:

xpertee.exeiexplore.exe

description	pid	process	target process
PID 4760 wrote to memory of 3512	4760	xpertee.exe	iexplore.exe
PID 4760 wrote to memory of 3512	4760	xpertee.exe	iexplore.exe
PID 4760 wrote to memory of 3512	4760	xpertee.exe	iexplore.exe
PID 4760 wrote to memory of 3512	4760	xpertee.exe	iexplore.exe
PID 4760 wrote to memory of 3512	4760	xpertee.exe	iexplore.exe
PID 4760 wrote to memory of 3512	4760	xpertee.exe	iexplore.exe
PID 4760 wrote to memory of 3512	4760	xpertee.exe	iexplore.exe
PID 4760 wrote to memory of 3512	4760	xpertee.exe	iexplore.exe
PID 3512 wrote to memory of 4400	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 4400	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 4400	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 4400	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 4400	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 4400	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 4400	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 4400	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 520	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 520	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 520	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 520	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 520	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 520	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 520	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 520	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 520	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1004	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1004	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1004	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1004	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1004	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1004	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1004	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1004	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1004	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 888	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 888	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 888	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 888	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 888	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 888	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 888	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 888	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 888	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1176	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1176	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1176	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1176	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1176	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1176	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1176	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1176	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1360	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1360	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1360	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1360	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1360	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1360	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1360	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1360	3512	iexplore.exe	iexplore.exe
PID 3512 wrote to memory of 1360	3512	iexplore.exe	iexplore.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

xpertee.exe

description ioc process

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

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

C:\Users\Admin\AppData\Local\Temp\xpertee.exe
"C:\Users\Admin\AppData\Local\Temp\xpertee.exe"
1⤵
- 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:4760

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\xpertee.exe
2⤵
- 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:3512

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4\lsvcjfudj0.txt"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4400

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4\lsvcjfudj1.txt"
3⤵
PID:520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 520 -s 92
4⤵
- Program crash
PID:836

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4\lsvcjfudj1.txt"
3⤵
PID:1004

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4\lsvcjfudj2.txt"
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:888

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4\lsvcjfudj3.txt"
3⤵
PID:1176

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4\lsvcjfudj4.txt"
3⤵
PID:1360

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4\lsvcjfudj2.txt
MD5
f94dc819ca773f1e3cb27abbc9e7fa27

SHA1
9a7700efadc5ea09ab288544ef1e3cd876255086

SHA256
a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

SHA512
72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

Download Submit
C:\Users\Admin\AppData\Roaming\G7M3E0W6-E4D2-N1R0-S0C7-P1M2G5S6Y0H4\lsvcjfudj4.txt
MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/520-14-0x0000000000411654-mapping.dmp

Download
memory/836-15-0x0000000004E70000-0x0000000004E71000-memory.dmp

Filesize
4KB

Download
memory/888-21-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/888-20-0x0000000000442F04-mapping.dmp

Download
memory/888-19-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1004-17-0x0000000000411654-mapping.dmp

Download
memory/1004-18-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1004-16-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1176-25-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1176-23-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1176-26-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1176-24-0x0000000000413750-mapping.dmp

Download
memory/1360-27-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1360-28-0x000000000040C2A8-mapping.dmp

Download
memory/1360-29-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3512-6-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/3512-4-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/3512-5-0x0000000000401364-mapping.dmp

Download
memory/4400-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4400-10-0x0000000000423BC0-mapping.dmp

Download
memory/4400-11-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4400-12-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download