Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
25-06-2024 16:41
Static task
static1
Behavioral task
behavioral1
Sample
c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe
Resource
win10v2004-20240611-en
Behavioral task
behavioral2
Sample
c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe
Resource
win11-20240508-en
General
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Target
c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe
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Size
839KB
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MD5
c9b393393e6203918dd762af9217695c
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SHA1
7912a644cd0b922628d8bfd07be49cf6caed0cde
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SHA256
c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723
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SHA512
6bdfb614ae90e729fdace042b925653bbd32f66dff188e0ec14cbad58012d883188f7461e753415c5e027b5298d55a041f3521b720ca90e671e860f9520ad709
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SSDEEP
12288:oFLV3SQMC2KjSnCs/urQO4VivUI6q9ulGvxnrgJMKut3KENjEhQEOuV:iSQaCsgUI6grzt3K4EWlu
Malware Config
Extracted
djvu
http://cajgtus.com/test2/get.php
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extension
.waqa
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offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
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payload_url
http://defgyma.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/344-4-0x0000000004510000-0x000000000462B000-memory.dmp family_djvu behavioral1/memory/992-2-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/992-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/992-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/992-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/992-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1036-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1036-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1036-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1036-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1036-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1036-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1036-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1036-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1036-39-0x0000000000400000-0x0000000000537000-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:
c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9fafaf07-ebf4-41eb-a5ae-57206ddf4c2a\\c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe\" --AutoStart" c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.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 29 api.2ip.ua 10 api.2ip.ua 12 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exec4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exedescription pid process target process PID 344 set thread context of 992 344 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 1940 set thread context of 1036 1940 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exec4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exepid process 992 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe 992 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe 1036 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe 1036 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exec4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exec4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exedescription pid process target process PID 344 wrote to memory of 992 344 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 344 wrote to memory of 992 344 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 344 wrote to memory of 992 344 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 344 wrote to memory of 992 344 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 344 wrote to memory of 992 344 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 344 wrote to memory of 992 344 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 344 wrote to memory of 992 344 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 344 wrote to memory of 992 344 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 344 wrote to memory of 992 344 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 344 wrote to memory of 992 344 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 992 wrote to memory of 4484 992 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe icacls.exe PID 992 wrote to memory of 4484 992 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe icacls.exe PID 992 wrote to memory of 4484 992 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe icacls.exe PID 992 wrote to memory of 1940 992 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 992 wrote to memory of 1940 992 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 992 wrote to memory of 1940 992 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 1940 wrote to memory of 1036 1940 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 1940 wrote to memory of 1036 1940 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 1940 wrote to memory of 1036 1940 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 1940 wrote to memory of 1036 1940 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 1940 wrote to memory of 1036 1940 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 1940 wrote to memory of 1036 1940 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 1940 wrote to memory of 1036 1940 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 1940 wrote to memory of 1036 1940 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 1940 wrote to memory of 1036 1940 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe PID 1940 wrote to memory of 1036 1940 c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe"C:\Users\Admin\AppData\Local\Temp\c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe"C:\Users\Admin\AppData\Local\Temp\c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.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\9fafaf07-ebf4-41eb-a5ae-57206ddf4c2a" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe"C:\Users\Admin\AppData\Local\Temp\c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exe"C:\Users\Admin\AppData\Local\Temp\c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.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\8B2B9A00839EED1DFDCCC3BFC2F5DF12Filesize
1KB
MD52365869258df7a66a2121b802ca4afd9
SHA173acc30a2edeb9d6830de559bb8a74f35168135d
SHA256d6b1932822bbd72a8e78c771717d992142348f67d625a42393719fefbe59b0ed
SHA512795004bab536e128dbd81c188976d37c7b650efbfa5a80374df4c65a1049c27658f4620b7605583928eb167fcb69b4c99e4c8730c507b824a7bde9c7fb0e21f4
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8Filesize
436B
MD51bfe0a81db078ea084ff82fe545176fe
SHA150b116f578bd272922fa8eae94f7b02fd3b88384
SHA2565ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f
SHA51237c582f3f09f8d80529608c09041295d1644bcc9de6fb8c4669b05339b0dd870f9525abc5eed53ad06a94b51441275504bc943c336c5beb63b53460ba836ca8d
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12Filesize
174B
MD5328653670ae19ee8ed6f62d46342df69
SHA147d8706ffe7ab5dffbe873b35dd2a65edb7f33e9
SHA25619d69a2100dd18be47c3b3471bf544162c880923f9bc0bc5f29f0ab813135ca4
SHA5128c277728531c7911cb120e2bb692b71329d50f4f135f2cf6cb518f182b136ece9427f339aeaf410b5a46d738f2630a931c5a932cb8c79273a55a5f9bee7b9e59
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8Filesize
170B
MD56f25a61be84bc2319aa0f3f729133363
SHA1dbd8eb68abeab5859005e3e1866c7e2cb8849b3b
SHA256f640aec25ed42ca54eeff8cb55218010c5d8bb6d4f90753b73d40006bc4af3f5
SHA512d91a856627f00bbd1e30748ef54d6b98b2a9adcbc594e1175f7089b34095a1bc2f87805229b6d5b4072d445aa1bc155e9d3ba715422d6fc47b0e12473d9699fb
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C:\Users\Admin\AppData\Local\9fafaf07-ebf4-41eb-a5ae-57206ddf4c2a\c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723.exeFilesize
839KB
MD5c9b393393e6203918dd762af9217695c
SHA17912a644cd0b922628d8bfd07be49cf6caed0cde
SHA256c4635572e7564b96f4d14ad32a9c4844022f35b9de1a5bd3e3d392a974d05723
SHA5126bdfb614ae90e729fdace042b925653bbd32f66dff188e0ec14cbad58012d883188f7461e753415c5e027b5298d55a041f3521b720ca90e671e860f9520ad709
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memory/344-4-0x0000000004510000-0x000000000462B000-memory.dmpFilesize
1.1MB
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memory/344-1-0x0000000004470000-0x000000000450B000-memory.dmpFilesize
620KB
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memory/992-6-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/992-2-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/992-19-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/992-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/992-5-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/1036-30-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1036-29-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1036-22-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1036-31-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1036-34-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1036-37-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1036-36-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/1036-38-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1036-39-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB