xpertrat | 21d8f3869dae855f7ddb202eca9bc170074ab405c7741cbd4ffb48960494234f

Analysis

max time kernel
112s
max time network
134s
platform
windows10_x64
resource
win10v20210410
submitted
15-04-2021 17:52

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

gunzipped.exe
Size

1.5MB
MD5

bde5cc055efbc8779784a94811e3e5a5
SHA1

629afe08ffe9d3660e7fd3918122af70fa49a5fd
SHA256

21d8f3869dae855f7ddb202eca9bc170074ab405c7741cbd4ffb48960494234f
SHA512

bc5dc3ed61fa9d00866219395a8ef6cb64ef8b7ee2ad20034b5840d5a7d92816bac22f61175eed75ee039a929eb7184a90c3ee480346249a508768c9f6cf15ff

Score

10^/10

xpertrat sales evasion persistence rat spyware stealer trojan upx

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

sales

79.134.225.117:5935

Mutex

V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1

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/4060-129-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat
behavioral2/memory/4060-130-0x0000000000401364-mapping.dmp	xpertrat
behavioral2/memory/4060-134-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/1004-137-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView
behavioral2/memory/1004-138-0x0000000000411654-mapping.dmp	MailPassView
behavioral2/memory/1004-142-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/696-139-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView
behavioral2/memory/696-140-0x0000000000442F04-mapping.dmp	WebBrowserPassView
behavioral2/memory/696-143-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView

Nirsoft 9 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1004-137-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/1004-138-0x0000000000411654-mapping.dmp	Nirsoft
behavioral2/memory/696-139-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/696-140-0x0000000000442F04-mapping.dmp	Nirsoft
behavioral2/memory/1004-142-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/696-143-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/2600-147-0x0000000000400000-0x0000000000415000-memory.dmp	Nirsoft
behavioral2/memory/2600-148-0x000000000040C2A8-mapping.dmp	Nirsoft
behavioral2/memory/2600-151-0x0000000000400000-0x0000000000415000-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:

gunzipped.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	gunzipped.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1 = "C:\\Users\\Admin\\AppData\\Roaming\\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1\\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1.exe"	gunzipped.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1580-135-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/1580-141-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/3792-145-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/3792-150-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Windows security modification 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

gunzipped.exe

description ioc process

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

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	gunzipped.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

gunzipped.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	gunzipped.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1 = "C:\\Users\\Admin\\AppData\\Roaming\\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1\\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1.exe"	gunzipped.exe
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	gunzipped.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1 = "C:\\Users\\Admin\\AppData\\Roaming\\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1\\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1.exe"	gunzipped.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

gunzipped.exe

description ioc process

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

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

Suspicious use of SetThreadContext 7 IoCs

Processes:

gunzipped.exegunzipped.exegunzipped.exe

description	pid	process	target process
PID 3876 set thread context of 4036	3876	gunzipped.exe	gunzipped.exe
PID 4036 set thread context of 4060	4036	gunzipped.exe	gunzipped.exe
PID 4060 set thread context of 1580	4060	gunzipped.exe	gunzipped.exe
PID 4060 set thread context of 1004	4060	gunzipped.exe	gunzipped.exe
PID 4060 set thread context of 696	4060	gunzipped.exe	gunzipped.exe
PID 4060 set thread context of 3792	4060	gunzipped.exe	gunzipped.exe
PID 4060 set thread context of 2600	4060	gunzipped.exe	gunzipped.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

gunzipped.exegunzipped.exegunzipped.exegunzipped.exe

pid	process
3876	gunzipped.exe
3876	gunzipped.exe
3876	gunzipped.exe
4036	gunzipped.exe
4036	gunzipped.exe
1580	gunzipped.exe
1580	gunzipped.exe
696	gunzipped.exe
696	gunzipped.exe
4036	gunzipped.exe
4036	gunzipped.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

gunzipped.exegunzipped.exegunzipped.exe

description pid process

Token: SeDebugPrivilege 3876 gunzipped.exe
Token: SeDebugPrivilege 4060 gunzipped.exe
Token: SeDebugPrivilege 1580 gunzipped.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

gunzipped.exegunzipped.exe

pid process

4036 gunzipped.exe
4060 gunzipped.exe

description	pid	process
Token: SeDebugPrivilege	3876	gunzipped.exe
Token: SeDebugPrivilege	4060	gunzipped.exe
Token: SeDebugPrivilege	1580	gunzipped.exe

pid	process
4036	gunzipped.exe
4060	gunzipped.exe

Suspicious use of WriteProcessMemory 58 IoCs

Processes:

gunzipped.exegunzipped.exegunzipped.exe

description	pid	process	target process
PID 3876 wrote to memory of 4036	3876	gunzipped.exe	gunzipped.exe
PID 3876 wrote to memory of 4036	3876	gunzipped.exe	gunzipped.exe
PID 3876 wrote to memory of 4036	3876	gunzipped.exe	gunzipped.exe
PID 3876 wrote to memory of 4036	3876	gunzipped.exe	gunzipped.exe
PID 3876 wrote to memory of 4036	3876	gunzipped.exe	gunzipped.exe
PID 3876 wrote to memory of 4036	3876	gunzipped.exe	gunzipped.exe
PID 3876 wrote to memory of 4036	3876	gunzipped.exe	gunzipped.exe
PID 4036 wrote to memory of 4060	4036	gunzipped.exe	gunzipped.exe
PID 4036 wrote to memory of 4060	4036	gunzipped.exe	gunzipped.exe
PID 4036 wrote to memory of 4060	4036	gunzipped.exe	gunzipped.exe
PID 4036 wrote to memory of 4060	4036	gunzipped.exe	gunzipped.exe
PID 4036 wrote to memory of 4060	4036	gunzipped.exe	gunzipped.exe
PID 4036 wrote to memory of 4060	4036	gunzipped.exe	gunzipped.exe
PID 4036 wrote to memory of 4060	4036	gunzipped.exe	gunzipped.exe
PID 4036 wrote to memory of 4060	4036	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1580	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1580	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1580	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1580	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1580	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1580	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1580	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1580	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1004	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1004	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1004	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1004	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1004	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1004	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1004	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1004	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 1004	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 696	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 696	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 696	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 696	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 696	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 696	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 696	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 696	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 696	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 3792	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 3792	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 3792	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 3792	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 3792	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 3792	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 3792	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 3792	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 2600	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 2600	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 2600	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 2600	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 2600	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 2600	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 2600	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 2600	4060	gunzipped.exe	gunzipped.exe
PID 4060 wrote to memory of 2600	4060	gunzipped.exe	gunzipped.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

gunzipped.exe

description ioc process

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

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

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3876

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
"C:\Users\Admin\AppData\Local\Temp\gunzipped.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:4036

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
C:\Users\Admin\AppData\Local\Temp\gunzipped.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:4060

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
/stext "C:\Users\Admin\AppData\Roaming\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1\yuzogxvto0.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1580

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
/stext "C:\Users\Admin\AppData\Roaming\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1\yuzogxvto1.txt"
4⤵
PID:1004

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
/stext "C:\Users\Admin\AppData\Roaming\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1\yuzogxvto2.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:696

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
/stext "C:\Users\Admin\AppData\Roaming\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1\yuzogxvto3.txt"
4⤵
PID:3792

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
/stext "C:\Users\Admin\AppData\Roaming\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1\yuzogxvto4.txt"
4⤵
PID:2600

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

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1\yuzogxvto2.txt
MD5
f94dc819ca773f1e3cb27abbc9e7fa27

SHA1
9a7700efadc5ea09ab288544ef1e3cd876255086

SHA256
a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

SHA512
72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

Download Submit
C:\Users\Admin\AppData\Roaming\V8V5U6A3-F774-P2N8-M6H6-L4M443J6G7A1\yuzogxvto4.txt
MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/696-143-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/696-140-0x0000000000442F04-mapping.dmp

Download
memory/696-139-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1004-137-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1004-142-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1004-138-0x0000000000411654-mapping.dmp

Download
memory/1580-135-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1580-136-0x0000000000423BC0-mapping.dmp

Download
memory/1580-141-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2600-151-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2600-148-0x000000000040C2A8-mapping.dmp

Download
memory/2600-147-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3792-150-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3792-146-0x0000000000413750-mapping.dmp

Download
memory/3792-145-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3876-120-0x0000000007360000-0x000000000785E000-memory.dmp

Filesize
5.0MB

Download
memory/3876-118-0x0000000007360000-0x0000000007361000-memory.dmp

Filesize
4KB

Download
memory/3876-122-0x00000000072B0000-0x00000000072B6000-memory.dmp

Filesize
24KB

Download
memory/3876-121-0x00000000074D0000-0x00000000074D1000-memory.dmp

Filesize
4KB

Download
memory/3876-124-0x0000000000DA0000-0x0000000000DDE000-memory.dmp

Filesize
248KB

Download
memory/3876-114-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/3876-119-0x0000000004E70000-0x0000000004E71000-memory.dmp

Filesize
4KB

Download
memory/3876-123-0x0000000007ED0000-0x0000000007F52000-memory.dmp

Filesize
520KB

Download
memory/3876-117-0x0000000007860000-0x0000000007861000-memory.dmp

Filesize
4KB

Download
memory/3876-116-0x00000000072C0000-0x00000000072C1000-memory.dmp

Filesize
4KB

Download
memory/4036-133-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4036-126-0x00000000004010B8-mapping.dmp

Download
memory/4036-125-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4060-134-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/4060-130-0x0000000000401364-mapping.dmp

Download
memory/4060-129-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download