xpertrat | b6b8326fd527390a435242178b6a45a973c4516d831669ce7527c5d97e90ab10

Analysis

max time kernel
49s
max time network
133s
platform
windows10_x64
resource
win10v20210408
submitted
25-06-2021 07:10

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General

Target

66587368e39228edf1f6034794f17579.exe
Size

419KB
MD5

66587368e39228edf1f6034794f17579
SHA1

31268b1ac9bb83c698eadf5e74f65d58b12d2a50
SHA256

b6b8326fd527390a435242178b6a45a973c4516d831669ce7527c5d97e90ab10
SHA512

fdf02be618eb51fbdafa952b2eb60801d8448f0078c2127024ae2eb4d2542fdabad14bf0e5b127bea5c891a1986ed857032d1a519f3fc537e8296b7bb6a2d9f6

Score

10^/10

xpertrat special x evasion persistence rat trojan upx

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

special X

mertrerfeyy.duckdns.org:8494

gwtruwhgw.duckdns.org:8494

dfgrttuutii.duckdns.org:8494

Mutex

J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4

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
behavioral2/memory/1280-128-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat
behavioral2/memory/1280-129-0x0000000000401364-mapping.dmp	xpertrat

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/1516-141-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView
behavioral2/memory/1516-142-0x0000000000411654-mapping.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/1616-147-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView
behavioral2/memory/1616-148-0x0000000000442F04-mapping.dmp	WebBrowserPassView

Nirsoft 6 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1516-141-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/1516-142-0x0000000000411654-mapping.dmp	Nirsoft
behavioral2/memory/1616-147-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/1616-148-0x0000000000442F04-mapping.dmp	Nirsoft
behavioral2/memory/420-156-0x0000000000400000-0x0000000000415000-memory.dmp	Nirsoft
behavioral2/memory/420-157-0x000000000040C2A8-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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4 = "C:\\Users\\Admin\\AppData\\Roaming\\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4.exe"	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	iexplore.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2080-137-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/2716-152-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

66587368e39228edf1f6034794f17579.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	66587368e39228edf1f6034794f17579.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-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4 = "C:\\Users\\Admin\\AppData\\Roaming\\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4.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\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4 = "C:\\Users\\Admin\\AppData\\Roaming\\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4.exe"	iexplore.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

66587368e39228edf1f6034794f17579.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	66587368e39228edf1f6034794f17579.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1584 3488 WerFault.exe iexplore.exe

pid	pid_target	process	target process
1584	3488	WerFault.exe	iexplore.exe

Suspicious use of SetThreadContext 8 IoCs

Processes:

66587368e39228edf1f6034794f17579.exe66587368e39228edf1f6034794f17579.exeiexplore.exe

description	pid	process	target process
PID 3728 set thread context of 1392	3728	66587368e39228edf1f6034794f17579.exe	66587368e39228edf1f6034794f17579.exe
PID 1392 set thread context of 1280	1392	66587368e39228edf1f6034794f17579.exe	iexplore.exe
PID 1280 set thread context of 2080	1280	iexplore.exe	iexplore.exe
PID 1280 set thread context of 1516	1280	iexplore.exe	iexplore.exe
PID 1280 set thread context of 3488	1280	iexplore.exe	iexplore.exe
PID 1280 set thread context of 1616	1280	iexplore.exe	iexplore.exe
PID 1280 set thread context of 2716	1280	iexplore.exe	iexplore.exe
PID 1280 set thread context of 420	1280	iexplore.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

66587368e39228edf1f6034794f17579.exeiexplore.exeiexplore.exe

pid	process
1392	66587368e39228edf1f6034794f17579.exe
1392	66587368e39228edf1f6034794f17579.exe
1392	66587368e39228edf1f6034794f17579.exe
1392	66587368e39228edf1f6034794f17579.exe
2080	iexplore.exe
2080	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

iexplore.exeiexplore.exe

description pid process

Token: SeDebugPrivilege 1280 iexplore.exe
Token: SeDebugPrivilege 2080 iexplore.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

66587368e39228edf1f6034794f17579.exeiexplore.exe

pid process

1392 66587368e39228edf1f6034794f17579.exe
1280 iexplore.exe

description	pid	process
Token: SeDebugPrivilege	1280	iexplore.exe
Token: SeDebugPrivilege	2080	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

66587368e39228edf1f6034794f17579.exe66587368e39228edf1f6034794f17579.exeiexplore.exe

description	pid	process	target process
PID 3728 wrote to memory of 1392	3728	66587368e39228edf1f6034794f17579.exe	66587368e39228edf1f6034794f17579.exe
PID 3728 wrote to memory of 1392	3728	66587368e39228edf1f6034794f17579.exe	66587368e39228edf1f6034794f17579.exe
PID 3728 wrote to memory of 1392	3728	66587368e39228edf1f6034794f17579.exe	66587368e39228edf1f6034794f17579.exe
PID 3728 wrote to memory of 1392	3728	66587368e39228edf1f6034794f17579.exe	66587368e39228edf1f6034794f17579.exe
PID 3728 wrote to memory of 1392	3728	66587368e39228edf1f6034794f17579.exe	66587368e39228edf1f6034794f17579.exe
PID 3728 wrote to memory of 1392	3728	66587368e39228edf1f6034794f17579.exe	66587368e39228edf1f6034794f17579.exe
PID 3728 wrote to memory of 1392	3728	66587368e39228edf1f6034794f17579.exe	66587368e39228edf1f6034794f17579.exe
PID 1392 wrote to memory of 1280	1392	66587368e39228edf1f6034794f17579.exe	iexplore.exe
PID 1392 wrote to memory of 1280	1392	66587368e39228edf1f6034794f17579.exe	iexplore.exe
PID 1392 wrote to memory of 1280	1392	66587368e39228edf1f6034794f17579.exe	iexplore.exe
PID 1392 wrote to memory of 1280	1392	66587368e39228edf1f6034794f17579.exe	iexplore.exe
PID 1392 wrote to memory of 1280	1392	66587368e39228edf1f6034794f17579.exe	iexplore.exe
PID 1392 wrote to memory of 1280	1392	66587368e39228edf1f6034794f17579.exe	iexplore.exe
PID 1392 wrote to memory of 1280	1392	66587368e39228edf1f6034794f17579.exe	iexplore.exe
PID 1392 wrote to memory of 1280	1392	66587368e39228edf1f6034794f17579.exe	iexplore.exe
PID 1280 wrote to memory of 2080	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2080	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2080	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2080	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2080	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2080	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2080	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2080	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1516	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1516	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1516	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1516	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1516	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1516	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1516	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1516	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1516	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 3488	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 3488	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 3488	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 3488	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 3488	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 3488	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 3488	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 3488	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 3488	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1616	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1616	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1616	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1616	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1616	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1616	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1616	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1616	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 1616	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2716	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2716	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2716	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2716	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2716	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2716	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2716	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 2716	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 420	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 420	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 420	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 420	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 420	1280	iexplore.exe	iexplore.exe
PID 1280 wrote to memory of 420	1280	iexplore.exe	iexplore.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

66587368e39228edf1f6034794f17579.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	66587368e39228edf1f6034794f17579.exe

C:\Users\Admin\AppData\Local\Temp\66587368e39228edf1f6034794f17579.exe
"C:\Users\Admin\AppData\Local\Temp\66587368e39228edf1f6034794f17579.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3728

C:\Users\Admin\AppData\Local\Temp\66587368e39228edf1f6034794f17579.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:1392

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\66587368e39228edf1f6034794f17579.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:1280

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\bejqajani0.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2080

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\bejqajani1.txt"
4⤵
PID:1516

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\bejqajani2.txt"
4⤵
PID:3488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3488 -s 92
5⤵
- Program crash
PID:1584

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\bejqajani2.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1616

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\bejqajani3.txt"
4⤵
PID:2716

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\bejqajani4.txt"
4⤵
PID:420

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\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\bejqajani2.txt
MD5
f94dc819ca773f1e3cb27abbc9e7fa27

SHA1
9a7700efadc5ea09ab288544ef1e3cd876255086

SHA256
a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

SHA512
72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

Download Submit
C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\bejqajani4.txt
MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/420-157-0x000000000040C2A8-mapping.dmp

Download
memory/420-156-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1280-133-0x0000000003050000-0x00000000031A3000-memory.dmp

Filesize
1.3MB

Download
memory/1280-129-0x0000000000401364-mapping.dmp

Download
memory/1280-128-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/1280-134-0x0000000003051000-0x000000000314D000-memory.dmp

Filesize
1008KB

Download
memory/1392-124-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1392-132-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1392-125-0x00000000004010B8-mapping.dmp

Download
memory/1516-141-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1516-142-0x0000000000411654-mapping.dmp

Download
memory/1616-147-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1616-148-0x0000000000442F04-mapping.dmp

Download
memory/2080-137-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2080-138-0x0000000000423BC0-mapping.dmp

Download
memory/2716-153-0x0000000000413750-mapping.dmp

Download
memory/2716-152-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3488-146-0x0000000000442F04-mapping.dmp

Download
memory/3728-123-0x0000000006BF0000-0x0000000006C1E000-memory.dmp

Filesize
184KB

Download
memory/3728-114-0x0000000000430000-0x0000000000431000-memory.dmp

Filesize
4KB

Download
memory/3728-120-0x0000000004E10000-0x0000000004E11000-memory.dmp

Filesize
4KB

Download
memory/3728-119-0x0000000004EB0000-0x00000000053AE000-memory.dmp

Filesize
5.0MB

Download
memory/3728-121-0x00000000087D0000-0x00000000087D2000-memory.dmp

Filesize
8KB

Download
memory/3728-122-0x0000000006A10000-0x0000000006A8D000-memory.dmp

Filesize
500KB

Download
memory/3728-118-0x0000000004F50000-0x0000000004F51000-memory.dmp

Filesize
4KB

Download
memory/3728-117-0x0000000004EB0000-0x0000000004EB1000-memory.dmp

Filesize
4KB

Download
memory/3728-116-0x00000000053B0000-0x00000000053B1000-memory.dmp

Filesize
4KB

Download