xpertrat | 467693bbef8580dd6eab668a628d44e94548710be1cc60799f8e17df8c63f88a

General

Target

gunzipped.exe
Size

424KB
MD5

4f5e20c314951e30f5ca01a71559a62c
SHA1

8910f34119c522fed7dee3f545ed7aa67396baec
SHA256

467693bbef8580dd6eab668a628d44e94548710be1cc60799f8e17df8c63f88a
SHA512

e39657f0dbab0cf9056e41d753e8c26e83b4d2b23cafedbb3652e588bf248f538c1fa1ed6017c4cee5bfde8304cb6d1b521bc12191547321195f0578e160f012

Score

10^/10

xpertrat test evasion persistence rat trojan

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

Test

C2

127.0.0.1:666

23.105.131.209:5643

Mutex

J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0

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 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4680-128-0x0000000000401364-mapping.dmp	xpertrat

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\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0 = "C:\\Users\\Admin\\AppData\\Roaming\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0.exe"	iexplore.exe

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:

iexplore.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0 = "C:\\Users\\Admin\\AppData\\Roaming\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0.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\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0 = "C:\\Users\\Admin\\AppData\\Roaming\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0.exe"	iexplore.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 2 IoCs

Processes:

gunzipped.exegunzipped.exe

description	pid	process	target process
PID 2636 set thread context of 1832	2636	gunzipped.exe	gunzipped.exe
PID 1832 set thread context of 4680	1832	gunzipped.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

gunzipped.exe

pid process

1832 gunzipped.exe
1832 gunzipped.exe
1832 gunzipped.exe
1832 gunzipped.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

iexplore.exe

description pid process

Token: SeDebugPrivilege 4680 iexplore.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

gunzipped.exeiexplore.exe

pid process

1832 gunzipped.exe
4680 iexplore.exe

pid	process
1832	gunzipped.exe
1832	gunzipped.exe
1832	gunzipped.exe
1832	gunzipped.exe

description	pid	process
Token: SeDebugPrivilege	4680	iexplore.exe

pid	process
1832	gunzipped.exe
4680	iexplore.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

gunzipped.exegunzipped.exe

description	pid	process	target process
PID 2636 wrote to memory of 1832	2636	gunzipped.exe	gunzipped.exe
PID 2636 wrote to memory of 1832	2636	gunzipped.exe	gunzipped.exe
PID 2636 wrote to memory of 1832	2636	gunzipped.exe	gunzipped.exe
PID 2636 wrote to memory of 1832	2636	gunzipped.exe	gunzipped.exe
PID 2636 wrote to memory of 1832	2636	gunzipped.exe	gunzipped.exe
PID 2636 wrote to memory of 1832	2636	gunzipped.exe	gunzipped.exe
PID 2636 wrote to memory of 1832	2636	gunzipped.exe	gunzipped.exe
PID 1832 wrote to memory of 4680	1832	gunzipped.exe	iexplore.exe
PID 1832 wrote to memory of 4680	1832	gunzipped.exe	iexplore.exe
PID 1832 wrote to memory of 4680	1832	gunzipped.exe	iexplore.exe
PID 1832 wrote to memory of 4680	1832	gunzipped.exe	iexplore.exe
PID 1832 wrote to memory of 4680	1832	gunzipped.exe	iexplore.exe
PID 1832 wrote to memory of 4680	1832	gunzipped.exe	iexplore.exe
PID 1832 wrote to memory of 4680	1832	gunzipped.exe	iexplore.exe
PID 1832 wrote to memory of 4680	1832	gunzipped.exe	iexplore.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 use of WriteProcessMemory
PID:2636
- 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:1832
- - C:\Program Files (x86)\Internet Explorer\iexplore.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 AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4680

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1832-124-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1832-125-0x00000000004010B8-mapping.dmp

Download
memory/1832-129-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2636-115-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/2636-117-0x0000000004EB0000-0x0000000004EB1000-memory.dmp

Filesize
4KB

Download
memory/2636-118-0x0000000004A50000-0x0000000004A51000-memory.dmp

Filesize
4KB

Download
memory/2636-119-0x00000000049B0000-0x0000000004EAE000-memory.dmp

Filesize
5.0MB

Download
memory/2636-120-0x00000000049D0000-0x00000000049D1000-memory.dmp

Filesize
4KB

Download
memory/2636-121-0x0000000007FE0000-0x0000000007FE1000-memory.dmp

Filesize
4KB

Download
memory/2636-122-0x0000000004C20000-0x0000000004C28000-memory.dmp

Filesize
32KB

Download
memory/2636-123-0x00000000083F0000-0x000000000844C000-memory.dmp

Filesize
368KB

Download
memory/4680-128-0x0000000000401364-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads