xpertrat | 99cabbad55b9ddaaa566e2f6878303e7081a8f112e2e1f3541a5e352af833b1d

General

Target

gunzipped.exe
Size

750KB
MD5

9189c940a9577852d429131fac3f27e4
SHA1

40705848169bf86aefed43e049f8976f97a4820b
SHA256

99cabbad55b9ddaaa566e2f6878303e7081a8f112e2e1f3541a5e352af833b1d
SHA512

3e6c9084afdc5857f05a575900dfe257189fb8046f443489bf2bc4cb083af2657c41e836fee61b56dc47a0b83c5b40ba78802ff59b92c78c8a0cf682968a13cc

Score

10^/10

xpertrat collection evasion persistence rat trojan

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

gunzipped.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" gunzipped.exe
Windows security bypass 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
XpertRAT
XpertRAT is a remote access trojan with various capabilities.
rat xpertrat

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\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	gunzipped.exe

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\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3 = "C:\\Users\\Admin\\AppData\\Roaming\\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3\\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3.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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

iexplore.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	iexplore.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3 = "C:\\Users\\Admin\\AppData\\Roaming\\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3\\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3.exe"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3 = "C:\\Users\\Admin\\AppData\\Roaming\\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3\\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3.exe"	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	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
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4984 1532 WerFault.exe iexplore.exe

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

pid	pid_target	process	target process
4984	1532	WerFault.exe	iexplore.exe

Suspicious use of SetThreadContext 8 IoCs

Processes:

gunzipped.exegunzipped.exeiexplore.exe

description	pid	process	target process
PID 3112 set thread context of 3920	3112	gunzipped.exe	gunzipped.exe
PID 3920 set thread context of 2348	3920	gunzipped.exe	iexplore.exe
PID 2348 set thread context of 3208	2348	iexplore.exe	iexplore.exe
PID 2348 set thread context of 1336	2348	iexplore.exe	iexplore.exe
PID 2348 set thread context of 3460	2348	iexplore.exe	iexplore.exe
PID 2348 set thread context of 1532	2348	iexplore.exe	iexplore.exe
PID 2348 set thread context of 4196	2348	iexplore.exe	iexplore.exe
PID 2348 set thread context of 4448	2348	iexplore.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

gunzipped.exegunzipped.exeiexplore.exeiexplore.exe

pid	process
3112	gunzipped.exe
3112	gunzipped.exe
3920	gunzipped.exe
3920	gunzipped.exe
3920	gunzipped.exe
3920	gunzipped.exe
3208	iexplore.exe
3208	iexplore.exe
3460	iexplore.exe
3460	iexplore.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

gunzipped.exeiexplore.exeiexplore.exe

description pid process

Token: SeDebugPrivilege 3112 gunzipped.exe
Token: SeDebugPrivilege 2348 iexplore.exe
Token: SeDebugPrivilege 3208 iexplore.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

gunzipped.exeiexplore.exe

pid process

3920 gunzipped.exe
2348 iexplore.exe

description	pid	process
Token: SeDebugPrivilege	3112	gunzipped.exe
Token: SeDebugPrivilege	2348	iexplore.exe
Token: SeDebugPrivilege	3208	iexplore.exe

pid	process
3920	gunzipped.exe
2348	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

gunzipped.exegunzipped.exeiexplore.exe

description	pid	process	target process
PID 3112 wrote to memory of 3920	3112	gunzipped.exe	gunzipped.exe
PID 3112 wrote to memory of 3920	3112	gunzipped.exe	gunzipped.exe
PID 3112 wrote to memory of 3920	3112	gunzipped.exe	gunzipped.exe
PID 3112 wrote to memory of 3920	3112	gunzipped.exe	gunzipped.exe
PID 3112 wrote to memory of 3920	3112	gunzipped.exe	gunzipped.exe
PID 3112 wrote to memory of 3920	3112	gunzipped.exe	gunzipped.exe
PID 3112 wrote to memory of 3920	3112	gunzipped.exe	gunzipped.exe
PID 3920 wrote to memory of 2348	3920	gunzipped.exe	iexplore.exe
PID 3920 wrote to memory of 2348	3920	gunzipped.exe	iexplore.exe
PID 3920 wrote to memory of 2348	3920	gunzipped.exe	iexplore.exe
PID 3920 wrote to memory of 2348	3920	gunzipped.exe	iexplore.exe
PID 3920 wrote to memory of 2348	3920	gunzipped.exe	iexplore.exe
PID 3920 wrote to memory of 2348	3920	gunzipped.exe	iexplore.exe
PID 3920 wrote to memory of 2348	3920	gunzipped.exe	iexplore.exe
PID 3920 wrote to memory of 2348	3920	gunzipped.exe	iexplore.exe
PID 2348 wrote to memory of 3208	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3208	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3208	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3208	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3208	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3208	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3208	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3208	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1336	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1336	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1336	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1336	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1336	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1336	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1336	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1336	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1336	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3460	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3460	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3460	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3460	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3460	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3460	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3460	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3460	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 3460	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1532	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1532	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1532	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1532	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1532	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1532	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1532	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 1532	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4196	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4196	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4196	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4196	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4196	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4196	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4196	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4196	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4448	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4448	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4448	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4448	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4448	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4448	2348	iexplore.exe	iexplore.exe
PID 2348 wrote to memory of 4448	2348	iexplore.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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3112

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
2⤵
- UAC bypass
- Windows security bypass
- 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:3920

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 SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2348

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3\euunwhbbr0.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3208

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3\euunwhbbr1.txt"
4⤵
- Accesses Microsoft Outlook accounts
PID:1336

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3\euunwhbbr2.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3460

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3\euunwhbbr3.txt"
4⤵
PID:1532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1532 -s 84
5⤵
- Program crash
PID:4984

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3\euunwhbbr3.txt"
4⤵
PID:4196

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3\euunwhbbr4.txt"
4⤵
PID:4448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1532 -ip 1532
1⤵
PID:4888

Network

MITRE ATT&CK Matrix ATT&CK 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

3

T1089

Modify Registry

6

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3\euunwhbbr2.txt
Filesize
3KB

MD5
f94dc819ca773f1e3cb27abbc9e7fa27

SHA1
9a7700efadc5ea09ab288544ef1e3cd876255086

SHA256
a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

SHA512
72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

Download Submit
C:\Users\Admin\AppData\Roaming\V1B5T2F0-T6S4-E5P1-P7G0-X443Q1A6T3M3\euunwhbbr4.txt
Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/3112-131-0x00000000054A0000-0x0000000005A44000-memory.dmp

Filesize
5.6MB

Download
memory/3112-132-0x0000000004FD0000-0x0000000005062000-memory.dmp

Filesize
584KB

Download
memory/3112-133-0x0000000005130000-0x000000000513A000-memory.dmp

Filesize
40KB

Download
memory/3112-134-0x0000000009AA0000-0x0000000009B3C000-memory.dmp

Filesize
624KB

Download
memory/3112-135-0x0000000009D00000-0x0000000009D66000-memory.dmp

Filesize
408KB

Download
memory/3112-130-0x0000000000390000-0x0000000000452000-memory.dmp

Filesize
776KB

Download
memory/3920-136-0x0000000000000000-mapping.dmp

Download
memory/3920-142-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3920-143-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3920-139-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3920-137-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads