dcrat | 8ca7610b8cfb28281fa3bfacbd64752209c98d1228447434dfbee9ba01574c38

Analysis

max time kernel
118s
max time network
136s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
16/10/2023, 14:41

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General

Target

NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Size

783KB
MD5

11d6778a8b7ee9220116e8324b208f20
SHA1

cd33ebf6014c4187abd313c56f197a65cc59de2b
SHA256

8ca7610b8cfb28281fa3bfacbd64752209c98d1228447434dfbee9ba01574c38
SHA512

06a8c014d182c4404b5e3b8b057e393a85b6d70130f622d2b26374f91c391109db8ad48a24285e23ad2c99364d3eeb755ababc5afe4eb9c2f284b2bdf70c8130
SSDEEP

12288:GqnOYxdAgpoNeF91rg5iFdr0yQ9gYx+EIpakCYJRU7Q9bWoFzqK:G+OQbpbgsFdAyQvzSqaq8q

Score

10^/10

dcrat evasion infostealer persistence rat trojan

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat

Process spawned unexpected child process 5 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2804	2724	schtasks.exe	27
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2708	2724	schtasks.exe	27
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2568	2724	schtasks.exe	27
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2580	2724	schtasks.exe	27
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2364	2724	schtasks.exe	27

UAC bypass 3 TTPs 6 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	winlogon.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	winlogon.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	winlogon.exe

DCRat payload 5 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2060-0-0x0000000001340000-0x000000000140A000-memory.dmp	dcrat
behavioral1/files/0x0006000000016267-32.dat	dcrat
behavioral1/files/0x000900000001560d-83.dat	dcrat
behavioral1/files/0x000900000001560d-84.dat	dcrat
behavioral1/memory/2796-85-0x0000000000380000-0x000000000044A000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
2796	winlogon.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\spoolsv = "\"C:\\Windows\\System32\\NlsLexicons000a\\spoolsv.exe\""	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lsm = "\"C:\\Windows\\System32\\ieui\\lsm.exe\""	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Documents and Settings\\explorer.exe\""	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Windows\\System32\\nsisvc\\winlogon.exe\""	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\Windows\\System32\\VAN\\wininit.exe\""	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe

Checks whether UAC is enabled 1 TTPs 4 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	winlogon.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	winlogon.exe

Drops file in System32 directory 16 IoCs

description	ioc	Process
File created	C:\Windows\System32\VAN\wininit.exe	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File created	C:\Windows\System32\VAN\560854153607923c4c5f107085a7db67be01f252	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File opened for modification	C:\Windows\System32\NlsLexicons000a\RCXB35B.tmp	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File opened for modification	C:\Windows\System32\ieui\lsm.exe	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File opened for modification	C:\Windows\System32\nsisvc\winlogon.exe	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File created	C:\Windows\System32\NlsLexicons000a\f3b6ecef712a24f33798f5d2fb3790c3d9b894c4	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File opened for modification	C:\Windows\System32\VAN\wininit.exe	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File opened for modification	C:\Windows\System32\ieui\RCXB55F.tmp	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File created	C:\Windows\System32\nsisvc\winlogon.exe	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File created	C:\Windows\System32\nsisvc\cc11b995f2a76da408ea6a601e682e64743153ad	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File created	C:\Windows\System32\ieui\lsm.exe	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File opened for modification	C:\Windows\System32\VAN\RCXB157.tmp	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File opened for modification	C:\Windows\System32\NlsLexicons000a\spoolsv.exe	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File created	C:\Windows\System32\NlsLexicons000a\spoolsv.exe	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File created	C:\Windows\System32\ieui\101b941d020240259ca4912829b53995ad543df6	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
File opened for modification	C:\Windows\System32\nsisvc\RCXAF44.tmp	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 5 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2804	schtasks.exe
2708	schtasks.exe
2568	schtasks.exe
2580	schtasks.exe
2364	schtasks.exe

Modifies system certificate store 2 TTPs 6 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	winlogon.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	winlogon.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	winlogon.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	winlogon.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	winlogon.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	winlogon.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe
2796	winlogon.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Token: SeDebugPrivilege	2796	winlogon.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 2796	2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe	33
PID 2060 wrote to memory of 2796	2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe	33
PID 2060 wrote to memory of 2796	2060	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe	33

System policy modification 1 TTPs 6 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	winlogon.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	winlogon.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	winlogon.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.11d6778a8b7ee9220116e8324b208f20_JC.exe"
1⤵
- UAC bypass
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2060
- C:\Windows\System32\nsisvc\winlogon.exe
  "C:\Windows\System32\nsisvc\winlogon.exe"
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - System policy modification
  PID:2796

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\nsisvc\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2804

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\System32\VAN\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2708

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\NlsLexicons000a\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2568

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Windows\System32\ieui\lsm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2580

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Documents and Settings\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2364

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
dadcfd24feca016ff9d5afa962198ba5

SHA1
a4fb56b8f05f2295b66bdf8de9470e4e909e04c7

SHA256
93b754440b6ce90b78001ed29b12688e7b2fe0b9e126929620613005bd97dbac

SHA512
f2a23e91735c97d31c86a61af029063ed754c9e4de1776650a0f8261fd26622574e1a57f3eff834da6498f638ef63b10dc7689f8d3f30244cb8541cc215c6a01

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabDBC1.tmp

Filesize
61KB

MD5
f3441b8572aae8801c04f3060b550443

SHA1
4ef0a35436125d6821831ef36c28ffaf196cda15

SHA256
6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

SHA512
5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarDC8E.tmp

Filesize
163KB

MD5
9441737383d21192400eca82fda910ec

SHA1
725e0d606a4fc9ba44aa8ffde65bed15e65367e4

SHA256
bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

SHA512
7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

Download Submit
C:\Users\explorer.exe

Filesize
783KB

MD5
11d6778a8b7ee9220116e8324b208f20

SHA1
cd33ebf6014c4187abd313c56f197a65cc59de2b

SHA256
8ca7610b8cfb28281fa3bfacbd64752209c98d1228447434dfbee9ba01574c38

SHA512
06a8c014d182c4404b5e3b8b057e393a85b6d70130f622d2b26374f91c391109db8ad48a24285e23ad2c99364d3eeb755ababc5afe4eb9c2f284b2bdf70c8130

Download Submit
C:\Windows\System32\nsisvc\winlogon.exe

Filesize
783KB

MD5
11d6778a8b7ee9220116e8324b208f20

SHA1
cd33ebf6014c4187abd313c56f197a65cc59de2b

SHA256
8ca7610b8cfb28281fa3bfacbd64752209c98d1228447434dfbee9ba01574c38

SHA512
06a8c014d182c4404b5e3b8b057e393a85b6d70130f622d2b26374f91c391109db8ad48a24285e23ad2c99364d3eeb755ababc5afe4eb9c2f284b2bdf70c8130

Download Submit
C:\Windows\System32\nsisvc\winlogon.exe

Filesize
783KB

MD5
11d6778a8b7ee9220116e8324b208f20

SHA1
cd33ebf6014c4187abd313c56f197a65cc59de2b

SHA256
8ca7610b8cfb28281fa3bfacbd64752209c98d1228447434dfbee9ba01574c38

SHA512
06a8c014d182c4404b5e3b8b057e393a85b6d70130f622d2b26374f91c391109db8ad48a24285e23ad2c99364d3eeb755ababc5afe4eb9c2f284b2bdf70c8130

Download Submit
memory/2060-34-0x000000001AED0000-0x000000001AF50000-memory.dmp

Filesize
512KB

Download
memory/2060-19-0x0000000000660000-0x0000000000668000-memory.dmp

Filesize
32KB

Download
memory/2060-4-0x0000000000260000-0x0000000000268000-memory.dmp

Filesize
32KB

Download
memory/2060-5-0x0000000000270000-0x0000000000280000-memory.dmp

Filesize
64KB

Download
memory/2060-6-0x0000000000280000-0x0000000000288000-memory.dmp

Filesize
32KB

Download
memory/2060-7-0x0000000000430000-0x000000000043C000-memory.dmp

Filesize
48KB

Download
memory/2060-8-0x0000000000440000-0x000000000044A000-memory.dmp

Filesize
40KB

Download
memory/2060-9-0x0000000000420000-0x000000000042A000-memory.dmp

Filesize
40KB

Download
memory/2060-15-0x0000000000630000-0x0000000000638000-memory.dmp

Filesize
32KB

Download
memory/2060-14-0x0000000000500000-0x0000000000508000-memory.dmp

Filesize
32KB

Download
memory/2060-13-0x0000000000460000-0x0000000000468000-memory.dmp

Filesize
32KB

Download
memory/2060-12-0x0000000000470000-0x0000000000478000-memory.dmp

Filesize
32KB

Download
memory/2060-11-0x0000000000450000-0x0000000000458000-memory.dmp

Filesize
32KB

Download
memory/2060-10-0x0000000000290000-0x0000000000298000-memory.dmp

Filesize
32KB

Download
memory/2060-16-0x0000000000640000-0x0000000000648000-memory.dmp

Filesize
32KB

Download
memory/2060-17-0x0000000000650000-0x0000000000658000-memory.dmp

Filesize
32KB

Download
memory/2060-18-0x0000000000B10000-0x0000000000B18000-memory.dmp

Filesize
32KB

Download
memory/2060-54-0x000000001AED0000-0x000000001AF50000-memory.dmp

Filesize
512KB

Download
memory/2060-20-0x0000000000B40000-0x0000000000B48000-memory.dmp

Filesize
32KB

Download
memory/2060-21-0x0000000000B30000-0x0000000000B3C000-memory.dmp

Filesize
48KB

Download
memory/2060-22-0x0000000000620000-0x0000000000628000-memory.dmp

Filesize
32KB

Download
memory/2060-25-0x000000001AED0000-0x000000001AF50000-memory.dmp

Filesize
512KB

Download
memory/2060-2-0x000000001AED0000-0x000000001AF50000-memory.dmp

Filesize
512KB

Download
memory/2060-35-0x000000001AED0000-0x000000001AF50000-memory.dmp

Filesize
512KB

Download
memory/2060-3-0x0000000000250000-0x0000000000258000-memory.dmp

Filesize
32KB

Download
memory/2060-39-0x000000001AED0000-0x000000001AF50000-memory.dmp

Filesize
512KB

Download
memory/2060-0-0x0000000001340000-0x000000000140A000-memory.dmp

Filesize
808KB

Download
memory/2060-69-0x000000001AED0000-0x000000001AF50000-memory.dmp

Filesize
512KB

Download
memory/2060-76-0x000000001AED0000-0x000000001AF50000-memory.dmp

Filesize
512KB

Download
memory/2060-77-0x000000001AED0000-0x000000001AF50000-memory.dmp

Filesize
512KB

Download
memory/2060-86-0x000000001AED0000-0x000000001AF50000-memory.dmp

Filesize
512KB

Download
memory/2060-89-0x000007FEF5600000-0x000007FEF5FEC000-memory.dmp

Filesize
9.9MB

Download
memory/2060-1-0x000007FEF5600000-0x000007FEF5FEC000-memory.dmp

Filesize
9.9MB

Download
memory/2060-53-0x000007FEF5600000-0x000007FEF5FEC000-memory.dmp

Filesize
9.9MB

Download
memory/2796-100-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-88-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-92-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-93-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-94-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-95-0x000007FEF5600000-0x000007FEF5FEC000-memory.dmp

Filesize
9.9MB

Download
memory/2796-96-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-97-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-98-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-99-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-87-0x000007FEF5600000-0x000007FEF5FEC000-memory.dmp

Filesize
9.9MB

Download
memory/2796-101-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-85-0x0000000000380000-0x000000000044A000-memory.dmp

Filesize
808KB

Download
memory/2796-91-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-102-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-164-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2796-183-0x000007FEF5600000-0x000007FEF5FEC000-memory.dmp

Filesize
9.9MB

Download