djvu | d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a

Analysis

max time kernel
295s
max time network
245s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
22/08/2024, 22:44

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General

Target
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Size 777KB
Sample240822-2ntdvstfpl
SHA256 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a
MD5 006edf0ac466164ddc9e0ac56474fe0a
SHA1 ee9f512713af63759f11279090d2c8004762735b
SHA512 43305369fea2dad52d51bc9d5947a2f7e78d33baadd07093c250b9eb1fd3762c511033bbfae2b8d6eb52254306d137e29cd15e0b30b0f6d44a9d4f3d12b8b808
SSDEEP 24576:aG18MH/r+RAIFqLN7/uW/Nau09jMxrc5N:3aMD+RANBKIJ09j
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test1/get.php

Attributes

extension
.watz
offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
payload_url
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/abe121434ad837dd5bdd03878a14485820240531135509/34284d Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0874PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral1/memory/2520-2-0x0000000001CD0000-0x0000000001DEB000-memory.dmp	family_djvu
behavioral1/memory/1240-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1240-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1240-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1240-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2712-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2712-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2712-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2712-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2712-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2712-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2712-61-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2712-62-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2712-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2608	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e18487a4-7997-417f-ac7a-de4810aebbc7\\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe\" --AutoStart"	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2520 set thread context of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 1220 set thread context of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1240	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
1240	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 2520 wrote to memory of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 2520 wrote to memory of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 2520 wrote to memory of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 2520 wrote to memory of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 2520 wrote to memory of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 2520 wrote to memory of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 2520 wrote to memory of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 2520 wrote to memory of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 2520 wrote to memory of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 2520 wrote to memory of 1240	2520	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	30
PID 1240 wrote to memory of 2608	1240	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 1240 wrote to memory of 2608	1240	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 1240 wrote to memory of 2608	1240	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 1240 wrote to memory of 2608	1240	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 1240 wrote to memory of 1220	1240	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	33
PID 1240 wrote to memory of 1220	1240	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	33
PID 1240 wrote to memory of 1220	1240	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	33
PID 1240 wrote to memory of 1220	1240	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	33
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34

C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
"C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
  "C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1240
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\e18487a4-7997-417f-ac7a-de4810aebbc7" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2608
- - C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
    "C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1220
  - - C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
      "C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 1KB
SHA256 33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f
MD5 7fb5fa1534dcf77f2125b2403b30a0ee
SHA1 365d96812a69ac0a4611ea4b70a3f306576cc3ea
SHA512 a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e
MD5 SHA1 SHA512

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B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
Size 436B
SHA256 f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
MD5 971c514f84bba0785f80aa1c23edfd79
SHA1 732acea710a87530c6b08ecdf32a110d254a54c8
SHA512 43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
MD5 SHA1 SHA512

Submit Download

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 174B
SHA256 3eaefd442fc4744a8e3542f0e1f87adff1e72097af3ce0f488744a57e59b3166
MD5 6637d410a82cd6db74209e73423002de
SHA1 54f286f1a859d0c1c62d2acffee3cb665f7d7402
SHA512 8cdf3dd9cf8bed280d7c19b9f971621ee7ec000a1e773b40688b70ec8e866ed0c17ae618878bba39f0b51fcba9e3bff71de678f9d35c8e6dc50f73a874598eb6
MD5 SHA1 SHA512

Submit Download

94308059B57B3142E455B38A6EB92015

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Size 342B
SHA256 886dd2e2380e53f156da893c249d02f3701b8b24e4b9175a8a3067e4e7ef9425
MD5 c7b19d3bef576a8ee596982c673731d2
SHA1 608ae6750a3c01ef11248a9a81b0a36da52ef205
SHA512 b0aa903c9dffef447f3fd929316631d2c34a4e091a1a163698063a354bff15fb0bae1bc62b68a5701f7f636a095021c15fd45c0ce670f3b360d59fb6ffd8e343
MD5 SHA1 SHA512

Submit Download

B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Size 170B
SHA256 0fcbc87c1d992292ed6881b72d022f7aee91c897ad09cd9584574433c5b6035a
MD5 b603c79b10a4040148624375aebdfca9
SHA1 bbf96a64c5bf1c29145d499f98edb6734b76cd16
SHA512 7875752c64fe2ac180fe3e461adb2d08b503832800251212eed17bcfb71fd6849d751a1dea0c941ba75ec1b88e095a1dec5f8467d689e49d12a09c7521c973cd
MD5 SHA1 SHA512

Submit Download

CabF4AB.tmp

Path C:\Users\Admin\AppData\Local\Temp\CabF4AB.tmp
Size 70KB
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
SSDEEP 1536:gc257bHnClJ3v5mnAQEBP+bfnW8Ctl8G1G4eu76NWDdB34w18R5cBWcJAm68+Q:gp2ld5jPqW8LgeulxB3fgcEfDQ
MD5 SHA1 SHA512 SSDEEP

Submit Download

d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe

Path C:\Users\Admin\AppData\Local\e18487a4-7997-417f-ac7a-de4810aebbc7\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Size 777KB
SHA256 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a
MD5 006edf0ac466164ddc9e0ac56474fe0a
SHA1 ee9f512713af63759f11279090d2c8004762735b
SHA512 43305369fea2dad52d51bc9d5947a2f7e78d33baadd07093c250b9eb1fd3762c511033bbfae2b8d6eb52254306d137e29cd15e0b30b0f6d44a9d4f3d12b8b808
SSDEEP 24576:aG18MH/r+RAIFqLN7/uW/Nau09jMxrc5N:3aMD+RANBKIJ09j
MD5 SHA1 SHA512 SSDEEP

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memory/1220-31-0x0000000000400000-0x00000000004D3000-memory.dmp

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memory/1220-36-0x0000000000400000-0x00000000004D3000-memory.dmp

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memory/1220-30-0x0000000000310000-0x00000000003A1000-memory.dmp

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memory/1240-8-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1240-7-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1240-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1240-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/1240-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2520-2-0x0000000001CD0000-0x0000000001DEB000-memory.dmp

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memory/2520-0-0x0000000001C30000-0x0000000001CC1000-memory.dmp

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memory/2520-1-0x0000000001C30000-0x0000000001CC1000-memory.dmp

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memory/2712-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2712-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2712-53-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2712-55-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2712-54-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2712-59-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2712-61-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2712-62-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2712-63-0x0000000000400000-0x0000000000537000-memory.dmp

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