xpertrat | c052755bf3cab34b18f346c176d9c20c296dd4010b818a424d763625eeb6ff92

Analysis

max time kernel
35s
max time network
138s
platform
windows10_x64
resource
win10v20210410
submitted
13-07-2021 13:22

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General

Target

d33732b691720be2cef97957e40bb69e.exe
Size

733KB
MD5

d33732b691720be2cef97957e40bb69e
SHA1

32669f8f8867e02b2be54d3fd73850e77b39ff5f
SHA256

c052755bf3cab34b18f346c176d9c20c296dd4010b818a424d763625eeb6ff92
SHA512

ab39035ec471638c1e980f4e356e63b7ce8ec6f97f6379d150557cc21414183bf2ff8edd35f196d56f189ebd3fdf76411652c365388bcf54ec9b4a15a4a0d447

Score

10^/10

xpertrat oklahama evasion persistence rat trojan upx

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

oklahama

oklahama.ydns.eu:1307

Mutex

X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2

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

resource	yara_rule
behavioral2/memory/1256-132-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat
behavioral2/memory/1256-133-0x0000000000401364-mapping.dmp	xpertrat

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2392-145-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView
behavioral2/memory/2392-146-0x0000000000411654-mapping.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3208-151-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView
behavioral2/memory/3208-152-0x0000000000442F04-mapping.dmp	WebBrowserPassView

Nirsoft 6 IoCs

resource	yara_rule
behavioral2/memory/2392-145-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/2392-146-0x0000000000411654-mapping.dmp	Nirsoft
behavioral2/memory/3208-151-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/3208-152-0x0000000000442F04-mapping.dmp	Nirsoft
behavioral2/memory/3928-167-0x000000000040C2A8-mapping.dmp	Nirsoft
behavioral2/memory/3928-166-0x0000000000400000-0x0000000000415000-memory.dmp	Nirsoft

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

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\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2 = "C:\\Users\\Admin\\AppData\\Roaming\\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2.exe"	iexplore.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3212-141-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/4084-160-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	d33732b691720be2cef97957e40bb69e.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2 = "C:\\Users\\Admin\\AppData\\Roaming\\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2.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\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2 = "C:\\Users\\Admin\\AppData\\Roaming\\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2.exe"	iexplore.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	d33732b691720be2cef97957e40bb69e.exe

Program crash 4 IoCs

pid	pid_target	Process	procid_target
2680	1656	WerFault.exe	83
3464	4092	WerFault.exe	87
504	3896	WerFault.exe	89
1052	3648	WerFault.exe	92

Suspicious use of SetThreadContext 11 IoCs

description	pid	Process	procid_target
PID 2208 set thread context of 3568	2208	d33732b691720be2cef97957e40bb69e.exe	79
PID 3568 set thread context of 1256	3568	d33732b691720be2cef97957e40bb69e.exe	80
PID 1256 set thread context of 3212	1256	iexplore.exe	81
PID 1256 set thread context of 2392	1256	iexplore.exe	82
PID 1256 set thread context of 1656	1256	iexplore.exe	83
PID 1256 set thread context of 3208	1256	iexplore.exe	86
PID 1256 set thread context of 4092	1256	iexplore.exe	87
PID 1256 set thread context of 3896	1256	iexplore.exe	89
PID 1256 set thread context of 4084	1256	iexplore.exe	91
PID 1256 set thread context of 3648	1256	iexplore.exe	92
PID 1256 set thread context of 3928	1256	iexplore.exe	94

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2208	d33732b691720be2cef97957e40bb69e.exe
2208	d33732b691720be2cef97957e40bb69e.exe
3568	d33732b691720be2cef97957e40bb69e.exe
3568	d33732b691720be2cef97957e40bb69e.exe
3212	iexplore.exe
3212	iexplore.exe
3208	iexplore.exe
3208	iexplore.exe
3568	d33732b691720be2cef97957e40bb69e.exe
3568	d33732b691720be2cef97957e40bb69e.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2208	d33732b691720be2cef97957e40bb69e.exe
Token: SeDebugPrivilege	1256	iexplore.exe
Token: SeDebugPrivilege	3212	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3568	d33732b691720be2cef97957e40bb69e.exe
1256	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 3568	2208	d33732b691720be2cef97957e40bb69e.exe	79
PID 2208 wrote to memory of 3568	2208	d33732b691720be2cef97957e40bb69e.exe	79
PID 2208 wrote to memory of 3568	2208	d33732b691720be2cef97957e40bb69e.exe	79
PID 2208 wrote to memory of 3568	2208	d33732b691720be2cef97957e40bb69e.exe	79
PID 2208 wrote to memory of 3568	2208	d33732b691720be2cef97957e40bb69e.exe	79
PID 2208 wrote to memory of 3568	2208	d33732b691720be2cef97957e40bb69e.exe	79
PID 2208 wrote to memory of 3568	2208	d33732b691720be2cef97957e40bb69e.exe	79
PID 3568 wrote to memory of 1256	3568	d33732b691720be2cef97957e40bb69e.exe	80
PID 3568 wrote to memory of 1256	3568	d33732b691720be2cef97957e40bb69e.exe	80
PID 3568 wrote to memory of 1256	3568	d33732b691720be2cef97957e40bb69e.exe	80
PID 3568 wrote to memory of 1256	3568	d33732b691720be2cef97957e40bb69e.exe	80
PID 3568 wrote to memory of 1256	3568	d33732b691720be2cef97957e40bb69e.exe	80
PID 3568 wrote to memory of 1256	3568	d33732b691720be2cef97957e40bb69e.exe	80
PID 3568 wrote to memory of 1256	3568	d33732b691720be2cef97957e40bb69e.exe	80
PID 3568 wrote to memory of 1256	3568	d33732b691720be2cef97957e40bb69e.exe	80
PID 1256 wrote to memory of 3212	1256	iexplore.exe	81
PID 1256 wrote to memory of 3212	1256	iexplore.exe	81
PID 1256 wrote to memory of 3212	1256	iexplore.exe	81
PID 1256 wrote to memory of 3212	1256	iexplore.exe	81
PID 1256 wrote to memory of 3212	1256	iexplore.exe	81
PID 1256 wrote to memory of 3212	1256	iexplore.exe	81
PID 1256 wrote to memory of 3212	1256	iexplore.exe	81
PID 1256 wrote to memory of 3212	1256	iexplore.exe	81
PID 1256 wrote to memory of 2392	1256	iexplore.exe	82
PID 1256 wrote to memory of 2392	1256	iexplore.exe	82
PID 1256 wrote to memory of 2392	1256	iexplore.exe	82
PID 1256 wrote to memory of 2392	1256	iexplore.exe	82
PID 1256 wrote to memory of 2392	1256	iexplore.exe	82
PID 1256 wrote to memory of 2392	1256	iexplore.exe	82
PID 1256 wrote to memory of 2392	1256	iexplore.exe	82
PID 1256 wrote to memory of 2392	1256	iexplore.exe	82
PID 1256 wrote to memory of 2392	1256	iexplore.exe	82
PID 1256 wrote to memory of 1656	1256	iexplore.exe	83
PID 1256 wrote to memory of 1656	1256	iexplore.exe	83
PID 1256 wrote to memory of 1656	1256	iexplore.exe	83
PID 1256 wrote to memory of 1656	1256	iexplore.exe	83
PID 1256 wrote to memory of 1656	1256	iexplore.exe	83
PID 1256 wrote to memory of 1656	1256	iexplore.exe	83
PID 1256 wrote to memory of 1656	1256	iexplore.exe	83
PID 1256 wrote to memory of 1656	1256	iexplore.exe	83
PID 1256 wrote to memory of 1656	1256	iexplore.exe	83
PID 1256 wrote to memory of 3208	1256	iexplore.exe	86
PID 1256 wrote to memory of 3208	1256	iexplore.exe	86
PID 1256 wrote to memory of 3208	1256	iexplore.exe	86
PID 1256 wrote to memory of 3208	1256	iexplore.exe	86
PID 1256 wrote to memory of 3208	1256	iexplore.exe	86
PID 1256 wrote to memory of 3208	1256	iexplore.exe	86
PID 1256 wrote to memory of 3208	1256	iexplore.exe	86
PID 1256 wrote to memory of 3208	1256	iexplore.exe	86
PID 1256 wrote to memory of 3208	1256	iexplore.exe	86
PID 1256 wrote to memory of 4092	1256	iexplore.exe	87
PID 1256 wrote to memory of 4092	1256	iexplore.exe	87
PID 1256 wrote to memory of 4092	1256	iexplore.exe	87
PID 1256 wrote to memory of 4092	1256	iexplore.exe	87
PID 1256 wrote to memory of 4092	1256	iexplore.exe	87
PID 1256 wrote to memory of 4092	1256	iexplore.exe	87
PID 1256 wrote to memory of 4092	1256	iexplore.exe	87
PID 1256 wrote to memory of 4092	1256	iexplore.exe	87
PID 1256 wrote to memory of 3896	1256	iexplore.exe	89
PID 1256 wrote to memory of 3896	1256	iexplore.exe	89
PID 1256 wrote to memory of 3896	1256	iexplore.exe	89
PID 1256 wrote to memory of 3896	1256	iexplore.exe	89
PID 1256 wrote to memory of 3896	1256	iexplore.exe	89
PID 1256 wrote to memory of 3896	1256	iexplore.exe	89

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	d33732b691720be2cef97957e40bb69e.exe

C:\Users\Admin\AppData\Local\Temp\d33732b691720be2cef97957e40bb69e.exe
"C:\Users\Admin\AppData\Local\Temp\d33732b691720be2cef97957e40bb69e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Users\Admin\AppData\Local\Temp\d33732b691720be2cef97957e40bb69e.exe
  C:\Users\Admin\AppData\Local\Temp\d33732b691720be2cef97957e40bb69e.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:3568
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\d33732b691720be2cef97957e40bb69e.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:1256
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\ivhiumnir0.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3212
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\ivhiumnir1.txt"
      4⤵
      PID:2392
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\ivhiumnir2.txt"
      4⤵
      PID:1656
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1656 -s 92
        5⤵
        Program crash
        
        PID:2680
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\ivhiumnir2.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3208
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\ivhiumnir3.txt"
      4⤵
      PID:4092
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4092 -s 92
        5⤵
        Program crash
        
        PID:3464
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\ivhiumnir3.txt"
      4⤵
      PID:3896
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 92
        5⤵
        Program crash
        
        PID:504
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\ivhiumnir3.txt"
      4⤵
      PID:4084
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\ivhiumnir4.txt"
      4⤵
      PID:3648
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 92
        5⤵
        Program crash
        
        PID:1052
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\X550V6H4-V1N8-X8C6-D6T5-A7W0Q2D4J7R2\ivhiumnir4.txt"
      4⤵
      PID:3928

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1256-137-0x0000000003601000-0x00000000036FD000-memory.dmp

Filesize
1008KB

Download
memory/1256-136-0x0000000003600000-0x0000000003753000-memory.dmp

Filesize
1.3MB

Download
memory/1256-132-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/2208-120-0x0000000005CA0000-0x0000000005CF8000-memory.dmp

Filesize
352KB

Download
memory/2208-127-0x0000000007E60000-0x0000000007EB9000-memory.dmp

Filesize
356KB

Download
memory/2208-122-0x00000000074A0000-0x00000000074A1000-memory.dmp

Filesize
4KB

Download
memory/2208-121-0x00000000073C0000-0x00000000073C1000-memory.dmp

Filesize
4KB

Download
memory/2208-119-0x0000000005840000-0x0000000005D3E000-memory.dmp

Filesize
5.0MB

Download
memory/2208-118-0x0000000005890000-0x0000000005891000-memory.dmp

Filesize
4KB

Download
memory/2208-117-0x00000000058E0000-0x00000000058E1000-memory.dmp

Filesize
4KB

Download
memory/2208-116-0x0000000005D40000-0x0000000005D41000-memory.dmp

Filesize
4KB

Download
memory/2208-114-0x0000000000FA0000-0x0000000000FA1000-memory.dmp

Filesize
4KB

Download
memory/2392-145-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3208-151-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/3212-141-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3568-138-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3568-128-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3928-166-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4084-160-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download