Analysis
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max time kernel
143s -
max time network
125s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
21-05-2024 15:19
Static task
static1
Behavioral task
behavioral1
Sample
09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
Resource
win11-20240426-en
General
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Target
09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
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Size
708KB
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MD5
afc2780d65fe1e67d01ae629cd2f1e0f
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SHA1
cabfc8608feca588c98e30476e79b9df85171c6f
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SHA256
09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319
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SHA512
390b4b8a11c099d512e2388c408492190311b2daaefc063c9279b6cc3f3a96ec3b71a1905556188439b42d29d2bde40662241a4ba08a456e5c72af3307f915b5
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SSDEEP
12288:SbYZF34fEdgCZ/Qp9bzIWDvhcC38g1AjGjJp4C0G6K98:S2F4EdgCZ/clbcCN6m74CS
Malware Config
Extracted
djvu
http://cajgtus.com/test2/get.php
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extension
.vehu
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offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 15 IoCs
Processes:
resource yara_rule behavioral2/memory/124-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/124-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/124-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/124-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5024-2-0x0000000004290000-0x00000000043AB000-memory.dmp family_djvu behavioral2/memory/124-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4900-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4900-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4900-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4900-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4900-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4900-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4900-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4900-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4900-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3938118698-2964058152-2337880935-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\169efb0b-ea79-4a42-9a64-ddc60b2b1e86\\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe\" --AutoStart" 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.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 1 api.2ip.ua 2 api.2ip.ua 5 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exedescription pid process target process PID 5024 set thread context of 124 5024 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 2200 set thread context of 4900 2200 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.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:
09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exepid process 124 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 124 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 4900 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 4900 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exedescription pid process target process PID 5024 wrote to memory of 124 5024 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 5024 wrote to memory of 124 5024 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 5024 wrote to memory of 124 5024 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 5024 wrote to memory of 124 5024 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 5024 wrote to memory of 124 5024 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 5024 wrote to memory of 124 5024 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 5024 wrote to memory of 124 5024 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 5024 wrote to memory of 124 5024 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 5024 wrote to memory of 124 5024 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 5024 wrote to memory of 124 5024 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 124 wrote to memory of 3916 124 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe icacls.exe PID 124 wrote to memory of 3916 124 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe icacls.exe PID 124 wrote to memory of 3916 124 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe icacls.exe PID 124 wrote to memory of 2200 124 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 124 wrote to memory of 2200 124 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 124 wrote to memory of 2200 124 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 2200 wrote to memory of 4900 2200 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 2200 wrote to memory of 4900 2200 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 2200 wrote to memory of 4900 2200 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 2200 wrote to memory of 4900 2200 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 2200 wrote to memory of 4900 2200 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 2200 wrote to memory of 4900 2200 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 2200 wrote to memory of 4900 2200 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 2200 wrote to memory of 4900 2200 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 2200 wrote to memory of 4900 2200 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe PID 2200 wrote to memory of 4900 2200 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5024 -
C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:124 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\169efb0b-ea79-4a42-9a64-ddc60b2b1e86" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3916 -
C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2200 -
C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4900
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5df80f9ba75076db634761b6132e0d4e3
SHA107983946fb660752c7cccb2ef82d01ec4c9ecc5d
SHA256d5ff96fd8b416de93a85783192206224cf8821c240cd8ff755f2e8270153dd99
SHA5124ec734c5d29e9ce00b00e42b627253195e8c7a158433fedfcee428e692a6501981c33d7c8a39235f8b691f087145cdbe660b430493edbeedb12588c5cdd5a66a
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD576acad754bd7aa5340ced025611ead1a
SHA1cd7d8adaa97daa47c3ef494bb0c00c247a39cf7d
SHA256ef9f4cf873820999a935507be6da187aa42e0b2d8fc0467a7182805b768bc759
SHA5122b0ff969b2108e2d043f88f43ea4a2d8d44eae069981b809d238e78f8dd436f6e5b449c0d40ad4f0e69c9429669406a5772e84c181447089a9f9584a90e294c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5a3c4f59b445cc6ce8d6bd967738b2466
SHA1c965d616dfc20ade69f654fdd64940ae0ec71585
SHA2561366d188516345257e9717ade350dd7ee1bcfb647eb96e7abcc0b1aa0e97a2ce
SHA51272ff1445b776189a0fa4c14a18cc2a38f5efa0db3b92ed9c3a432048b2281d8b8a6e88812711b85c995a26cb6a76b1bf68b8df1b3a6d30f33868216bfd13dfce
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C:\Users\Admin\AppData\Local\169efb0b-ea79-4a42-9a64-ddc60b2b1e86\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
Filesize708KB
MD5afc2780d65fe1e67d01ae629cd2f1e0f
SHA1cabfc8608feca588c98e30476e79b9df85171c6f
SHA25609c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319
SHA512390b4b8a11c099d512e2388c408492190311b2daaefc063c9279b6cc3f3a96ec3b71a1905556188439b42d29d2bde40662241a4ba08a456e5c72af3307f915b5