Analysis
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max time kernel
141s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 08:21
Static task
static1
Behavioral task
behavioral1
Sample
e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
Resource
win11-20240508-en
General
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Target
e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
-
Size
730KB
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MD5
4858e6b3b3bbccbfea0105b3644f4acd
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SHA1
efd8afa3ff89590c662f6ebc1689397a142c1a4e
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SHA256
e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54
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SHA512
7e655b980e5e9a33e4b3e48fbe9e7b491f71783d204b81473caff8ed00c449ed1f020eabd710663db7bec3ead9533fbaaf6b78fbc7eb0e7c385c55352c03c59a
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SSDEEP
12288:kUh/e8Co0hOeLh+gd8ZqKvR+DgXBP66vM/xN4zDbPELPBRE4eXOtU:kUgHBLLh+6kJPXWUbPejIB
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.vepi
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offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
-
payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
-
ransomnote
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Signatures
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Detected Djvu ransomware 15 IoCs
Processes:
resource yara_rule behavioral1/memory/2384-2-0x00000000049D0000-0x0000000004AEB000-memory.dmp family_djvu behavioral1/memory/4852-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4852-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4852-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4852-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4852-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5100-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5100-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5100-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5100-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5100-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5100-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5100-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5100-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5100-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\26dc5bf1-4100-4b4b-916a-66a4160de7f0\\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe\" --AutoStart" e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.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.
Processes:
flow ioc 3 api.2ip.ua 4 api.2ip.ua 14 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exee3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exedescription pid process target process PID 2384 set thread context of 4852 2384 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 668 set thread context of 5100 668 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exee3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exepid process 4852 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe 4852 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe 5100 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe 5100 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exee3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exee3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exedescription pid process target process PID 2384 wrote to memory of 4852 2384 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 2384 wrote to memory of 4852 2384 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 2384 wrote to memory of 4852 2384 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 2384 wrote to memory of 4852 2384 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 2384 wrote to memory of 4852 2384 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 2384 wrote to memory of 4852 2384 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 2384 wrote to memory of 4852 2384 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 2384 wrote to memory of 4852 2384 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 2384 wrote to memory of 4852 2384 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 2384 wrote to memory of 4852 2384 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 4852 wrote to memory of 5060 4852 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe icacls.exe PID 4852 wrote to memory of 5060 4852 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe icacls.exe PID 4852 wrote to memory of 5060 4852 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe icacls.exe PID 4852 wrote to memory of 668 4852 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 4852 wrote to memory of 668 4852 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 4852 wrote to memory of 668 4852 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 668 wrote to memory of 5100 668 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 668 wrote to memory of 5100 668 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 668 wrote to memory of 5100 668 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 668 wrote to memory of 5100 668 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 668 wrote to memory of 5100 668 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 668 wrote to memory of 5100 668 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 668 wrote to memory of 5100 668 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 668 wrote to memory of 5100 668 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 668 wrote to memory of 5100 668 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe PID 668 wrote to memory of 5100 668 e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe"C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe"C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\26dc5bf1-4100-4b4b-916a-66a4160de7f0" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe"C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe"C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
1KB
MD56f6e3fca3096a0e7e7eb59d51f4a5350
SHA1c978fa12d9045c593d5e7e097037ee465e09c3b2
SHA256d27a9ba9c11dbd9c2b2bcb61a4128f457e7d15a3db20fad170588821e4003d78
SHA512c45004cb6359a32eb55f1f2ff762ab948d79991ec890ceaf988d513ff9cd4dc0168deb2235b391b43ca8d69d960ba302fde0ed13a2b0e1dddbd63135f27cb546
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
410B
MD508faa641c9ad12309c43bf87484ad469
SHA1f4531da4d3da66b0bc70daa4993e7f4a743601cb
SHA2562e26fd32f5790ac447aefe778ba3d3d83f44a410e0da1ec5affe8d6e2399a447
SHA512a753772f372c938fcb75e614caf25a003be2dadd82ce71f150f463625403ee23d93acfb13773b7af4219f7e68033f07a9123986fd208de872fe4327ef77bc3bb
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
392B
MD50b54a640c061677618487c4b86247803
SHA1461bdf4773103c17ee07197c215a5ca5fce53271
SHA256fdafae046de3afa7db39259dbdd325764ce569f7b6b9a56c138ae8674d04d4ea
SHA5126fe999c205df2cb0b8f2c85ff975cd978c53ffc64d53fc28f0d8c8b4cba4b6ee391884c705b9cffe557387146666ece4f93eb3c1ae4744b9a733505afcca88bc
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C:\Users\Admin\AppData\Local\26dc5bf1-4100-4b4b-916a-66a4160de7f0\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exeFilesize
730KB
MD54858e6b3b3bbccbfea0105b3644f4acd
SHA1efd8afa3ff89590c662f6ebc1689397a142c1a4e
SHA256e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54
SHA5127e655b980e5e9a33e4b3e48fbe9e7b491f71783d204b81473caff8ed00c449ed1f020eabd710663db7bec3ead9533fbaaf6b78fbc7eb0e7c385c55352c03c59a
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memory/2384-2-0x00000000049D0000-0x0000000004AEB000-memory.dmpFilesize
1.1MB
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memory/2384-1-0x0000000004930000-0x00000000049C4000-memory.dmpFilesize
592KB
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memory/4852-6-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4852-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4852-19-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4852-5-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4852-4-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5100-28-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5100-27-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5100-22-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5100-29-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5100-32-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5100-34-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5100-35-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5100-36-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5100-37-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB