xpertrat | 06febadb1cc71ef3987c339b7c862ea4cd32656c372c4f266cd1af68c355a0c0

Analysis

max time kernel
42s
max time network
143s
platform
windows10_x64
resource
win10v20210410
submitted
26/06/2021, 07:17

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General

Target
939a42faab70585cf4aed59c73425492.exe
Size 472KB
Sample210626-lpg4vrrfxs
SHA256 06febadb1cc71ef3987c339b7c862ea4cd32656c372c4f266cd1af68c355a0c0
MD5 939a42faab70585cf4aed59c73425492
SHA1 ccc57ed7de341f637e1ba6e671105ec304bd2c4b
SHA512 04a845f4b4db9f8fb923a10db65a1cac6cce46f52aa46eaa124b7aa710e7d063555e93f93e26dfb9fa3c28425297d080f69025fcbc73801825154cbf659abe00
MD5 SHA1 SHA512

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

resource	yara_rule
behavioral2/memory/1776-131-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat
behavioral2/memory/1776-132-0x0000000000401364-mapping.dmp	xpertrat

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2808-143-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView
behavioral2/memory/2808-144-0x0000000000411654-mapping.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4092-150-0x0000000000442F04-mapping.dmp	WebBrowserPassView
behavioral2/memory/4092-149-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView

Nirsoft 6 IoCs

resource	yara_rule
behavioral2/memory/2808-143-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/2808-144-0x0000000000411654-mapping.dmp	Nirsoft
behavioral2/memory/4092-150-0x0000000000442F04-mapping.dmp	Nirsoft
behavioral2/memory/4092-149-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/3212-160-0x0000000000400000-0x0000000000415000-memory.dmp	Nirsoft
behavioral2/memory/3212-161-0x000000000040C2A8-mapping.dmp	Nirsoft

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

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\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4 = "C:\\Users\\Admin\\AppData\\Roaming\\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4.exe"	iexplore.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3268-139-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/1068-154-0x0000000000400000-0x0000000000416000-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"	939a42faab70585cf4aed59c73425492.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\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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	939a42faab70585cf4aed59c73425492.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
1284	1632	WerFault.exe	80
2828	2820	WerFault.exe	86
3216	684	WerFault.exe	90

Suspicious use of SetThreadContext 10 IoCs

description	pid	Process	procid_target
PID 508 set thread context of 1972	508	939a42faab70585cf4aed59c73425492.exe	79
PID 1972 set thread context of 1632	1972	939a42faab70585cf4aed59c73425492.exe	80
PID 1972 set thread context of 1776	1972	939a42faab70585cf4aed59c73425492.exe	83
PID 1776 set thread context of 3268	1776	iexplore.exe	84
PID 1776 set thread context of 2808	1776	iexplore.exe	85
PID 1776 set thread context of 2820	1776	iexplore.exe	86
PID 1776 set thread context of 4092	1776	iexplore.exe	88
PID 1776 set thread context of 1068	1776	iexplore.exe	89
PID 1776 set thread context of 684	1776	iexplore.exe	90
PID 1776 set thread context of 3212	1776	iexplore.exe	92

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
508	939a42faab70585cf4aed59c73425492.exe
508	939a42faab70585cf4aed59c73425492.exe
508	939a42faab70585cf4aed59c73425492.exe
1972	939a42faab70585cf4aed59c73425492.exe
1972	939a42faab70585cf4aed59c73425492.exe
1972	939a42faab70585cf4aed59c73425492.exe
1972	939a42faab70585cf4aed59c73425492.exe
1972	939a42faab70585cf4aed59c73425492.exe
1972	939a42faab70585cf4aed59c73425492.exe
3268	iexplore.exe
3268	iexplore.exe
4092	iexplore.exe
4092	iexplore.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	508	939a42faab70585cf4aed59c73425492.exe
Token: SeDebugPrivilege	1776	iexplore.exe
Token: SeDebugPrivilege	3268	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1972	939a42faab70585cf4aed59c73425492.exe
1776	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 508 wrote to memory of 1972	508	939a42faab70585cf4aed59c73425492.exe	79
PID 508 wrote to memory of 1972	508	939a42faab70585cf4aed59c73425492.exe	79
PID 508 wrote to memory of 1972	508	939a42faab70585cf4aed59c73425492.exe	79
PID 508 wrote to memory of 1972	508	939a42faab70585cf4aed59c73425492.exe	79
PID 508 wrote to memory of 1972	508	939a42faab70585cf4aed59c73425492.exe	79
PID 508 wrote to memory of 1972	508	939a42faab70585cf4aed59c73425492.exe	79
PID 508 wrote to memory of 1972	508	939a42faab70585cf4aed59c73425492.exe	79
PID 1972 wrote to memory of 1632	1972	939a42faab70585cf4aed59c73425492.exe	80
PID 1972 wrote to memory of 1632	1972	939a42faab70585cf4aed59c73425492.exe	80
PID 1972 wrote to memory of 1632	1972	939a42faab70585cf4aed59c73425492.exe	80
PID 1972 wrote to memory of 1632	1972	939a42faab70585cf4aed59c73425492.exe	80
PID 1972 wrote to memory of 1632	1972	939a42faab70585cf4aed59c73425492.exe	80
PID 1972 wrote to memory of 1632	1972	939a42faab70585cf4aed59c73425492.exe	80
PID 1972 wrote to memory of 1632	1972	939a42faab70585cf4aed59c73425492.exe	80
PID 1972 wrote to memory of 1632	1972	939a42faab70585cf4aed59c73425492.exe	80
PID 1972 wrote to memory of 1776	1972	939a42faab70585cf4aed59c73425492.exe	83
PID 1972 wrote to memory of 1776	1972	939a42faab70585cf4aed59c73425492.exe	83
PID 1972 wrote to memory of 1776	1972	939a42faab70585cf4aed59c73425492.exe	83
PID 1972 wrote to memory of 1776	1972	939a42faab70585cf4aed59c73425492.exe	83
PID 1972 wrote to memory of 1776	1972	939a42faab70585cf4aed59c73425492.exe	83
PID 1972 wrote to memory of 1776	1972	939a42faab70585cf4aed59c73425492.exe	83
PID 1972 wrote to memory of 1776	1972	939a42faab70585cf4aed59c73425492.exe	83
PID 1972 wrote to memory of 1776	1972	939a42faab70585cf4aed59c73425492.exe	83
PID 1776 wrote to memory of 3268	1776	iexplore.exe	84
PID 1776 wrote to memory of 3268	1776	iexplore.exe	84
PID 1776 wrote to memory of 3268	1776	iexplore.exe	84
PID 1776 wrote to memory of 3268	1776	iexplore.exe	84
PID 1776 wrote to memory of 3268	1776	iexplore.exe	84
PID 1776 wrote to memory of 3268	1776	iexplore.exe	84
PID 1776 wrote to memory of 3268	1776	iexplore.exe	84
PID 1776 wrote to memory of 3268	1776	iexplore.exe	84
PID 1776 wrote to memory of 2808	1776	iexplore.exe	85
PID 1776 wrote to memory of 2808	1776	iexplore.exe	85
PID 1776 wrote to memory of 2808	1776	iexplore.exe	85
PID 1776 wrote to memory of 2808	1776	iexplore.exe	85
PID 1776 wrote to memory of 2808	1776	iexplore.exe	85
PID 1776 wrote to memory of 2808	1776	iexplore.exe	85
PID 1776 wrote to memory of 2808	1776	iexplore.exe	85
PID 1776 wrote to memory of 2808	1776	iexplore.exe	85
PID 1776 wrote to memory of 2808	1776	iexplore.exe	85
PID 1776 wrote to memory of 2820	1776	iexplore.exe	86
PID 1776 wrote to memory of 2820	1776	iexplore.exe	86
PID 1776 wrote to memory of 2820	1776	iexplore.exe	86
PID 1776 wrote to memory of 2820	1776	iexplore.exe	86
PID 1776 wrote to memory of 2820	1776	iexplore.exe	86
PID 1776 wrote to memory of 2820	1776	iexplore.exe	86
PID 1776 wrote to memory of 2820	1776	iexplore.exe	86
PID 1776 wrote to memory of 2820	1776	iexplore.exe	86
PID 1776 wrote to memory of 2820	1776	iexplore.exe	86
PID 1776 wrote to memory of 4092	1776	iexplore.exe	88
PID 1776 wrote to memory of 4092	1776	iexplore.exe	88
PID 1776 wrote to memory of 4092	1776	iexplore.exe	88
PID 1776 wrote to memory of 4092	1776	iexplore.exe	88
PID 1776 wrote to memory of 4092	1776	iexplore.exe	88
PID 1776 wrote to memory of 4092	1776	iexplore.exe	88
PID 1776 wrote to memory of 4092	1776	iexplore.exe	88
PID 1776 wrote to memory of 4092	1776	iexplore.exe	88
PID 1776 wrote to memory of 4092	1776	iexplore.exe	88
PID 1776 wrote to memory of 1068	1776	iexplore.exe	89
PID 1776 wrote to memory of 1068	1776	iexplore.exe	89
PID 1776 wrote to memory of 1068	1776	iexplore.exe	89
PID 1776 wrote to memory of 1068	1776	iexplore.exe	89
PID 1776 wrote to memory of 1068	1776	iexplore.exe	89
PID 1776 wrote to memory of 1068	1776	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"	939a42faab70585cf4aed59c73425492.exe

C:\Users\Admin\AppData\Local\Temp\939a42faab70585cf4aed59c73425492.exe
"C:\Users\Admin\AppData\Local\Temp\939a42faab70585cf4aed59c73425492.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:508
- C:\Users\Admin\AppData\Local\Temp\939a42faab70585cf4aed59c73425492.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:1972
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\939a42faab70585cf4aed59c73425492.exe
    3⤵
    PID:1632
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1632 -s 100
      4⤵
      Program crash
      PID:1284
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\939a42faab70585cf4aed59c73425492.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:1776
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh0.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3268
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh1.txt"
      4⤵
      PID:2808
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh2.txt"
      4⤵
      PID:2820
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 92
        5⤵
        Program crash
        
        PID:2828
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh2.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4092
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh3.txt"
      4⤵
      PID:1068
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh4.txt"
      4⤵
      PID:684
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 684 -s 92
        5⤵
        Program crash
        
        PID:3216
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh4.txt"
      4⤵
      PID:3212

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/508-118-0x0000000002B30000-0x0000000002B31000-memory.dmp

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memory/508-117-0x0000000005590000-0x0000000005591000-memory.dmp

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memory/508-119-0x00000000056D0000-0x00000000056D1000-memory.dmp

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memory/508-120-0x0000000005580000-0x0000000005581000-memory.dmp

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memory/508-121-0x0000000005F40000-0x0000000005F42000-memory.dmp

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memory/508-122-0x0000000009130000-0x00000000091AD000-memory.dmp

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memory/508-123-0x000000000B940000-0x000000000B96E000-memory.dmp

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memory/508-116-0x00000000058F0000-0x00000000058F1000-memory.dmp

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memory/508-114-0x0000000000920000-0x0000000000921000-memory.dmp

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memory/1068-154-0x0000000000400000-0x0000000000416000-memory.dmp

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memory/1776-135-0x0000000003410000-0x0000000003563000-memory.dmp

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memory/1776-136-0x0000000003411000-0x000000000350D000-memory.dmp

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memory/1776-131-0x0000000000400000-0x0000000000443000-memory.dmp

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memory/1972-124-0x0000000000400000-0x000000000042C000-memory.dmp

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memory/1972-130-0x0000000000400000-0x000000000042C000-memory.dmp

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memory/2808-143-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/3212-160-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/3268-139-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/4092-149-0x0000000000400000-0x0000000000459000-memory.dmp

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