xpertrat | daf3291e47f8659d58a505b5ed585987018001e08827f3aff1ab0bb860bd5c80

Analysis

max time kernel
38s
max time network
131s
platform
windows10_x64
resource
win10v20201028
submitted
09/11/2020, 16:14

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General

Target
ES174028911-035110-sanlccjavap0004-1_pdf.exe
Size 1.3MB
Sample201109-m22ephta2s
SHA256 daf3291e47f8659d58a505b5ed585987018001e08827f3aff1ab0bb860bd5c80
MD5 a7433aeec10caba2de9978e0de200cc3
SHA1 b5eb42feb127898ef72ad78ac039dd2e80dc0ab6
SHA512 c297fc86e40ac9654926eae90e00e03074f811968116de222e81df2760b41fee8b39bf1bff3f9466f7cf39eabd558462796009bc22c00696dac4d3771daa9503
MD5 SHA1 SHA512

Score

10^/10

xpertrat xe evasion persistence rat trojan upx

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

79.134.225.99:6712

Mutex

Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2

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 3 IoCs

resource	yara_rule
behavioral2/memory/1308-16-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat
behavioral2/memory/1308-17-0x0000000000401364-mapping.dmp	xpertrat
behavioral2/memory/1308-18-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2324-27-0x0000000000411654-mapping.dmp	MailPassView
behavioral2/memory/2324-26-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView
behavioral2/memory/2324-28-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3840-29-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView
behavioral2/memory/3840-30-0x0000000000442F04-mapping.dmp	WebBrowserPassView
behavioral2/memory/3840-31-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView

Nirsoft 11 IoCs

resource	yara_rule
behavioral2/memory/3880-25-0x0000000000400000-0x0000000000426000-memory.dmp	Nirsoft
behavioral2/memory/2324-27-0x0000000000411654-mapping.dmp	Nirsoft
behavioral2/memory/2324-26-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/2324-28-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/3840-29-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/3840-30-0x0000000000442F04-mapping.dmp	Nirsoft
behavioral2/memory/3840-31-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/2256-36-0x0000000000400000-0x0000000000416000-memory.dmp	Nirsoft
behavioral2/memory/2388-43-0x0000000000400000-0x0000000000415000-memory.dmp	Nirsoft
behavioral2/memory/2388-44-0x000000000040C2A8-mapping.dmp	Nirsoft
behavioral2/memory/2388-45-0x0000000000400000-0x0000000000415000-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\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2 = "C:\\Users\\Admin\\AppData\\Roaming\\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2\\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2.exe"	iexplore.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3880-22-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/3880-24-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/3880-25-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/2256-33-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/2256-35-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/2256-36-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
3440	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"	ES174028911-035110-sanlccjavap0004-1_pdf.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2 = "C:\\Users\\Admin\\AppData\\Roaming\\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2\\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2.exe"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2 = "C:\\Users\\Admin\\AppData\\Roaming\\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2\\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2.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"	ES174028911-035110-sanlccjavap0004-1_pdf.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
900	2220	WerFault.exe	87
2204	2076	WerFault.exe	90

Suspicious use of SetThreadContext 9 IoCs

description	pid	Process	procid_target
PID 428 set thread context of 3480	428	ES174028911-035110-sanlccjavap0004-1_pdf.exe	80
PID 3480 set thread context of 1308	3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe	81
PID 1308 set thread context of 3880	1308	iexplore.exe	83
PID 1308 set thread context of 2324	1308	iexplore.exe	84
PID 1308 set thread context of 3840	1308	iexplore.exe	85
PID 1308 set thread context of 2256	1308	iexplore.exe	86
PID 1308 set thread context of 2220	1308	iexplore.exe	87
PID 1308 set thread context of 2076	1308	iexplore.exe	90
PID 1308 set thread context of 2388	1308	iexplore.exe	92

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe
3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe
3880	iexplore.exe
3880	iexplore.exe
3840	iexplore.exe
3840	iexplore.exe
3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe
3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	428	ES174028911-035110-sanlccjavap0004-1_pdf.exe
Token: SeDebugPrivilege	1308	iexplore.exe
Token: SeDebugPrivilege	3880	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe
1308	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 428 wrote to memory of 3480	428	ES174028911-035110-sanlccjavap0004-1_pdf.exe	80
PID 428 wrote to memory of 3480	428	ES174028911-035110-sanlccjavap0004-1_pdf.exe	80
PID 428 wrote to memory of 3480	428	ES174028911-035110-sanlccjavap0004-1_pdf.exe	80
PID 428 wrote to memory of 3480	428	ES174028911-035110-sanlccjavap0004-1_pdf.exe	80
PID 428 wrote to memory of 3480	428	ES174028911-035110-sanlccjavap0004-1_pdf.exe	80
PID 428 wrote to memory of 3480	428	ES174028911-035110-sanlccjavap0004-1_pdf.exe	80
PID 428 wrote to memory of 3480	428	ES174028911-035110-sanlccjavap0004-1_pdf.exe	80
PID 3480 wrote to memory of 1308	3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe	81
PID 3480 wrote to memory of 1308	3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe	81
PID 3480 wrote to memory of 1308	3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe	81
PID 3480 wrote to memory of 1308	3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe	81
PID 3480 wrote to memory of 1308	3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe	81
PID 3480 wrote to memory of 1308	3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe	81
PID 3480 wrote to memory of 1308	3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe	81
PID 3480 wrote to memory of 1308	3480	ES174028911-035110-sanlccjavap0004-1_pdf.exe	81
PID 1308 wrote to memory of 3440	1308	iexplore.exe	82
PID 1308 wrote to memory of 3440	1308	iexplore.exe	82
PID 1308 wrote to memory of 3440	1308	iexplore.exe	82
PID 1308 wrote to memory of 3440	1308	iexplore.exe	82
PID 1308 wrote to memory of 3880	1308	iexplore.exe	83
PID 1308 wrote to memory of 3880	1308	iexplore.exe	83
PID 1308 wrote to memory of 3880	1308	iexplore.exe	83
PID 1308 wrote to memory of 3880	1308	iexplore.exe	83
PID 1308 wrote to memory of 3880	1308	iexplore.exe	83
PID 1308 wrote to memory of 3880	1308	iexplore.exe	83
PID 1308 wrote to memory of 3880	1308	iexplore.exe	83
PID 1308 wrote to memory of 3880	1308	iexplore.exe	83
PID 1308 wrote to memory of 2324	1308	iexplore.exe	84
PID 1308 wrote to memory of 2324	1308	iexplore.exe	84
PID 1308 wrote to memory of 2324	1308	iexplore.exe	84
PID 1308 wrote to memory of 2324	1308	iexplore.exe	84
PID 1308 wrote to memory of 2324	1308	iexplore.exe	84
PID 1308 wrote to memory of 2324	1308	iexplore.exe	84
PID 1308 wrote to memory of 2324	1308	iexplore.exe	84
PID 1308 wrote to memory of 2324	1308	iexplore.exe	84
PID 1308 wrote to memory of 2324	1308	iexplore.exe	84
PID 1308 wrote to memory of 3840	1308	iexplore.exe	85
PID 1308 wrote to memory of 3840	1308	iexplore.exe	85
PID 1308 wrote to memory of 3840	1308	iexplore.exe	85
PID 1308 wrote to memory of 3840	1308	iexplore.exe	85
PID 1308 wrote to memory of 3840	1308	iexplore.exe	85
PID 1308 wrote to memory of 3840	1308	iexplore.exe	85
PID 1308 wrote to memory of 3840	1308	iexplore.exe	85
PID 1308 wrote to memory of 3840	1308	iexplore.exe	85
PID 1308 wrote to memory of 3840	1308	iexplore.exe	85
PID 1308 wrote to memory of 2256	1308	iexplore.exe	86
PID 1308 wrote to memory of 2256	1308	iexplore.exe	86
PID 1308 wrote to memory of 2256	1308	iexplore.exe	86
PID 1308 wrote to memory of 2256	1308	iexplore.exe	86
PID 1308 wrote to memory of 2256	1308	iexplore.exe	86
PID 1308 wrote to memory of 2256	1308	iexplore.exe	86
PID 1308 wrote to memory of 2256	1308	iexplore.exe	86
PID 1308 wrote to memory of 2256	1308	iexplore.exe	86
PID 1308 wrote to memory of 2220	1308	iexplore.exe	87
PID 1308 wrote to memory of 2220	1308	iexplore.exe	87
PID 1308 wrote to memory of 2220	1308	iexplore.exe	87
PID 1308 wrote to memory of 2220	1308	iexplore.exe	87
PID 1308 wrote to memory of 2220	1308	iexplore.exe	87
PID 1308 wrote to memory of 2220	1308	iexplore.exe	87
PID 1308 wrote to memory of 2220	1308	iexplore.exe	87
PID 1308 wrote to memory of 2220	1308	iexplore.exe	87
PID 1308 wrote to memory of 2220	1308	iexplore.exe	87
PID 1308 wrote to memory of 2076	1308	iexplore.exe	90
PID 1308 wrote to memory of 2076	1308	iexplore.exe	90

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"	ES174028911-035110-sanlccjavap0004-1_pdf.exe

C:\Users\Admin\AppData\Local\Temp\ES174028911-035110-sanlccjavap0004-1_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\ES174028911-035110-sanlccjavap0004-1_pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:428
- C:\Users\Admin\AppData\Local\Temp\ES174028911-035110-sanlccjavap0004-1_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\ES174028911-035110-sanlccjavap0004-1_pdf.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:3480
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\ES174028911-035110-sanlccjavap0004-1_pdf.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:1308
  - - C:\Windows\SysWOW64\notepad.exe
      notepad.exe
      4⤵
      Deletes itself
      PID:3440
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2\aoojdijtw0.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3880
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2\aoojdijtw1.txt"
      4⤵
      PID:2324
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2\aoojdijtw2.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3840
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2\aoojdijtw3.txt"
      4⤵
      PID:2256
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2\aoojdijtw4.txt"
      4⤵
      PID:2220
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2220 -s 92
        5⤵
        Program crash
        
        PID:900
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2\aoojdijtw4.txt"
      4⤵
      PID:2076
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2076 -s 92
        5⤵
        Program crash
        
        PID:2204
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\Y550W6I4-W1O8-Y8D6-E6U5-B8X0R3E4K7S2\aoojdijtw4.txt"
      4⤵
      PID:2388

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/428-7-0x0000000007130000-0x000000000718A000-memory.dmp

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memory/428-4-0x00000000053A0000-0x00000000053A1000-memory.dmp

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memory/428-5-0x0000000005380000-0x0000000005381000-memory.dmp

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memory/428-6-0x0000000007710000-0x0000000007711000-memory.dmp

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memory/428-8-0x0000000007190000-0x0000000007191000-memory.dmp

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memory/428-9-0x0000000007800000-0x0000000007801000-memory.dmp

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memory/428-10-0x0000000007DF0000-0x0000000007E06000-memory.dmp

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memory/428-0-0x0000000073160000-0x000000007384E000-memory.dmp

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memory/428-3-0x0000000005980000-0x0000000005981000-memory.dmp

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memory/428-1-0x0000000000A00000-0x0000000000A01000-memory.dmp

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memory/900-39-0x0000000004730000-0x0000000004731000-memory.dmp

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memory/1308-16-0x0000000000400000-0x0000000000443000-memory.dmp

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memory/1308-18-0x0000000000400000-0x0000000000443000-memory.dmp

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memory/2204-42-0x0000000004940000-0x0000000004941000-memory.dmp

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memory/2256-33-0x0000000000400000-0x0000000000416000-memory.dmp

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memory/2256-36-0x0000000000400000-0x0000000000416000-memory.dmp

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memory/2256-35-0x0000000000400000-0x0000000000416000-memory.dmp

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memory/2324-26-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/2324-28-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/2388-43-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/2388-45-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/3480-11-0x0000000000400000-0x000000000042C000-memory.dmp

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memory/3480-13-0x0000000000400000-0x000000000042C000-memory.dmp

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memory/3840-31-0x0000000000400000-0x0000000000459000-memory.dmp

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memory/3840-29-0x0000000000400000-0x0000000000459000-memory.dmp

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memory/3880-25-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/3880-24-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/3880-22-0x0000000000400000-0x0000000000426000-memory.dmp

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