xpertrat | f2926aaea4603961e15c9ac92eb599ddd51bd6e19bd7fded285a1db16753db87

Analysis

max time kernel
67s
max time network
143s
platform
windows10_x64
resource
win10-en-20210920
submitted
15/10/2021, 07:48

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General

Target
7560b03d9721036181565287e85d9525.exe
Size 1.1MB
Sample211015-jm5rdsbddq
SHA256 f2926aaea4603961e15c9ac92eb599ddd51bd6e19bd7fded285a1db16753db87
MD5 7560b03d9721036181565287e85d9525
SHA1 447c0d915c9236b5f3221bfbe05e5b57785d3142
SHA512 fb38977856b6d4702b1793916c90b0b595dc8881457d6a2a98ba488f80e444314a5e1cdaa0f6a741e6c12b129195fd04f499d84a4cca32386c64fe58ccdfe583
MD5 SHA1 SHA512

Score

10^/10

xpertrat collection evasion persistence rat trojan

Malware Config

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 744 created 2964	744	WerFault.exe	74

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

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2964-128-0x0000000000411654-mapping.dmp	MailPassView

Nirsoft 1 IoCs

resource	yara_rule
behavioral2/memory/2964-128-0x0000000000411654-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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe"	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	iexplore.exe

Deletes itself 1 IoCs

pid	Process
944	notepad.exe

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"	7560b03d9721036181565287e85d9525.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.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\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.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"	7560b03d9721036181565287e85d9525.exe

Program crash 6 IoCs

pid	pid_target	Process	procid_target
1976	2964	WerFault.exe	74
744	2964	WerFault.exe	74
1476	740	WerFault.exe	79
1580	1088	WerFault.exe	84
1512	1188	WerFault.exe	86
1408	3492	WerFault.exe	88

Suspicious use of SetThreadContext 12 IoCs

description	pid	Process	procid_target
PID 2132 set thread context of 3404	2132	7560b03d9721036181565287e85d9525.exe	70
PID 3404 set thread context of 3652	3404	7560b03d9721036181565287e85d9525.exe	71
PID 3652 set thread context of 1788	3652	iexplore.exe	73
PID 3652 set thread context of 2964	3652	iexplore.exe	74
PID 3652 set thread context of 1144	3652	iexplore.exe	78
PID 3652 set thread context of 740	3652	iexplore.exe	79
PID 3652 set thread context of 1768	3652	iexplore.exe	81
PID 3652 set thread context of 1088	3652	iexplore.exe	84
PID 3652 set thread context of 1188	3652	iexplore.exe	86
PID 3652 set thread context of 3492	3652	iexplore.exe	88
PID 3652 set thread context of 2316	3652	iexplore.exe	90
PID 3652 set thread context of 2008	3652	iexplore.exe	91

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2132	7560b03d9721036181565287e85d9525.exe
2132	7560b03d9721036181565287e85d9525.exe
2132	7560b03d9721036181565287e85d9525.exe
3404	7560b03d9721036181565287e85d9525.exe
3404	7560b03d9721036181565287e85d9525.exe
1788	iexplore.exe
1788	iexplore.exe
3404	7560b03d9721036181565287e85d9525.exe
3404	7560b03d9721036181565287e85d9525.exe
1768	iexplore.exe
1768	iexplore.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2132	7560b03d9721036181565287e85d9525.exe
Token: SeDebugPrivilege	3652	iexplore.exe
Token: SeDebugPrivilege	1788	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3404	7560b03d9721036181565287e85d9525.exe
3652	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 3404	2132	7560b03d9721036181565287e85d9525.exe	70
PID 2132 wrote to memory of 3404	2132	7560b03d9721036181565287e85d9525.exe	70
PID 2132 wrote to memory of 3404	2132	7560b03d9721036181565287e85d9525.exe	70
PID 2132 wrote to memory of 3404	2132	7560b03d9721036181565287e85d9525.exe	70
PID 2132 wrote to memory of 3404	2132	7560b03d9721036181565287e85d9525.exe	70
PID 2132 wrote to memory of 3404	2132	7560b03d9721036181565287e85d9525.exe	70
PID 2132 wrote to memory of 3404	2132	7560b03d9721036181565287e85d9525.exe	70
PID 3404 wrote to memory of 3652	3404	7560b03d9721036181565287e85d9525.exe	71
PID 3404 wrote to memory of 3652	3404	7560b03d9721036181565287e85d9525.exe	71
PID 3404 wrote to memory of 3652	3404	7560b03d9721036181565287e85d9525.exe	71
PID 3404 wrote to memory of 3652	3404	7560b03d9721036181565287e85d9525.exe	71
PID 3404 wrote to memory of 3652	3404	7560b03d9721036181565287e85d9525.exe	71
PID 3404 wrote to memory of 3652	3404	7560b03d9721036181565287e85d9525.exe	71
PID 3404 wrote to memory of 3652	3404	7560b03d9721036181565287e85d9525.exe	71
PID 3404 wrote to memory of 3652	3404	7560b03d9721036181565287e85d9525.exe	71
PID 3652 wrote to memory of 944	3652	iexplore.exe	72
PID 3652 wrote to memory of 944	3652	iexplore.exe	72
PID 3652 wrote to memory of 944	3652	iexplore.exe	72
PID 3652 wrote to memory of 944	3652	iexplore.exe	72
PID 3652 wrote to memory of 1788	3652	iexplore.exe	73
PID 3652 wrote to memory of 1788	3652	iexplore.exe	73
PID 3652 wrote to memory of 1788	3652	iexplore.exe	73
PID 3652 wrote to memory of 1788	3652	iexplore.exe	73
PID 3652 wrote to memory of 1788	3652	iexplore.exe	73
PID 3652 wrote to memory of 1788	3652	iexplore.exe	73
PID 3652 wrote to memory of 1788	3652	iexplore.exe	73
PID 3652 wrote to memory of 1788	3652	iexplore.exe	73
PID 3652 wrote to memory of 2964	3652	iexplore.exe	74
PID 3652 wrote to memory of 2964	3652	iexplore.exe	74
PID 3652 wrote to memory of 2964	3652	iexplore.exe	74
PID 3652 wrote to memory of 2964	3652	iexplore.exe	74
PID 3652 wrote to memory of 2964	3652	iexplore.exe	74
PID 3652 wrote to memory of 2964	3652	iexplore.exe	74
PID 3652 wrote to memory of 2964	3652	iexplore.exe	74
PID 3652 wrote to memory of 2964	3652	iexplore.exe	74
PID 3652 wrote to memory of 2964	3652	iexplore.exe	74
PID 3652 wrote to memory of 1144	3652	iexplore.exe	78
PID 3652 wrote to memory of 1144	3652	iexplore.exe	78
PID 3652 wrote to memory of 1144	3652	iexplore.exe	78
PID 3652 wrote to memory of 1144	3652	iexplore.exe	78
PID 3652 wrote to memory of 1144	3652	iexplore.exe	78
PID 3652 wrote to memory of 1144	3652	iexplore.exe	78
PID 3652 wrote to memory of 1144	3652	iexplore.exe	78
PID 3652 wrote to memory of 1144	3652	iexplore.exe	78
PID 3652 wrote to memory of 1144	3652	iexplore.exe	78
PID 3652 wrote to memory of 740	3652	iexplore.exe	79
PID 3652 wrote to memory of 740	3652	iexplore.exe	79
PID 3652 wrote to memory of 740	3652	iexplore.exe	79
PID 3652 wrote to memory of 740	3652	iexplore.exe	79
PID 3652 wrote to memory of 740	3652	iexplore.exe	79
PID 3652 wrote to memory of 740	3652	iexplore.exe	79
PID 3652 wrote to memory of 740	3652	iexplore.exe	79
PID 3652 wrote to memory of 740	3652	iexplore.exe	79
PID 3652 wrote to memory of 740	3652	iexplore.exe	79
PID 3652 wrote to memory of 1768	3652	iexplore.exe	81
PID 3652 wrote to memory of 1768	3652	iexplore.exe	81
PID 3652 wrote to memory of 1768	3652	iexplore.exe	81
PID 3652 wrote to memory of 1768	3652	iexplore.exe	81
PID 3652 wrote to memory of 1768	3652	iexplore.exe	81
PID 3652 wrote to memory of 1768	3652	iexplore.exe	81
PID 3652 wrote to memory of 1768	3652	iexplore.exe	81
PID 3652 wrote to memory of 1768	3652	iexplore.exe	81
PID 3652 wrote to memory of 1768	3652	iexplore.exe	81
PID 3652 wrote to memory of 1088	3652	iexplore.exe	84

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"	7560b03d9721036181565287e85d9525.exe

C:\Users\Admin\AppData\Local\Temp\7560b03d9721036181565287e85d9525.exe
"C:\Users\Admin\AppData\Local\Temp\7560b03d9721036181565287e85d9525.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2132
- C:\Users\Admin\AppData\Local\Temp\7560b03d9721036181565287e85d9525.exe
  C:\Users\Admin\AppData\Local\Temp\7560b03d9721036181565287e85d9525.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:3404
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\7560b03d9721036181565287e85d9525.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:3652
  - - C:\Windows\SysWOW64\notepad.exe
      notepad.exe
      4⤵
      Deletes itself
      PID:944
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\reuefkbwu0.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1788
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\reuefkbwu1.txt"
      4⤵
      PID:2964
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2964 -s 24
        5⤵
        Program crash
        
        PID:1976
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2964 -s 36
        5⤵
        Suspicious use of NtCreateProcessExOtherParentProcess
        Program crash
        
        PID:744
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\reuefkbwu1.txt"
      4⤵
      Accesses Microsoft Outlook accounts
      PID:1144
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\reuefkbwu2.txt"
      4⤵
      PID:740
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 740 -s 92
        5⤵
        Program crash
        
        PID:1476
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\reuefkbwu2.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1768
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\reuefkbwu3.txt"
      4⤵
      PID:1088
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1088 -s 92
        5⤵
        Program crash
        
        PID:1580
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\reuefkbwu3.txt"
      4⤵
      PID:1188
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1188 -s 92
        5⤵
        Program crash
        
        PID:1512
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\reuefkbwu3.txt"
      4⤵
      PID:3492
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3492 -s 92
        5⤵
        Program crash
        
        PID:1408
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\reuefkbwu3.txt"
      4⤵
      PID:2316
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\reuefkbwu4.txt"
      4⤵
      PID:2008

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

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/2132-115-0x0000000000760000-0x0000000000761000-memory.dmp

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memory/2132-119-0x0000000005060000-0x0000000005090000-memory.dmp

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memory/2132-118-0x00000000052D0000-0x00000000052D1000-memory.dmp

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memory/2132-117-0x0000000005140000-0x0000000005251000-memory.dmp

Download

memory/3404-126-0x0000000000400000-0x000000000042C000-memory.dmp

Download

memory/3404-123-0x0000000001500000-0x000000000150A000-memory.dmp

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memory/3404-122-0x0000000001500000-0x0000000001506000-memory.dmp

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memory/3404-120-0x0000000000400000-0x000000000042C000-memory.dmp

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