Analysis
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max time kernel
145s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
21-10-2024 13:03
Static task
static1
Behavioral task
behavioral1
Sample
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
Resource
win10v2004-20241007-en
General
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Target
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
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Size
754KB
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MD5
51cdffb93a6be165bbf7657410530d0d
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SHA1
a479e69408af50ad5b5e12539fad8a98316f8fd0
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SHA256
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70
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SHA512
1e6135c8399ab9289fa97afbf87a73b87a8d4850d73bffa67c41d38137723a0dcacc32c91340c260bf49bd2e2116d559fba218152d8ad6ab4e20ea0d6ea0d49c
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SSDEEP
12288:46bRBPCVNzRrurNBVORUzCpdMtyfwbqBS9H4Tk53eiYaNLNvR:lbiVNpuFORu8dMMfbU7Yap
Malware Config
Extracted
djvu
http://sajdfue.com/test2/get.php
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extension
.looy
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offline_id
1eSPzWRaNslCgtjBZfL5pzvovoiaVI4IZSnvAwt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://sajdfue.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 17 IoCs
Processes:
resource yara_rule behavioral2/memory/3692-2-0x0000000002370000-0x000000000248B000-memory.dmp family_djvu behavioral2/memory/2392-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2392-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2392-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2392-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2392-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5004-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5004-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5004-26-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5004-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5004-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5004-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5004-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5004-41-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5004-40-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5004-42-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5004-43-0x0000000000400000-0x0000000000537000-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:
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\333735bd-7394-4dd9-a0f8-ed654001c574\\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe\" --AutoStart" b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.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 19 api.2ip.ua 20 api.2ip.ua 29 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exedescription pid process target process PID 3692 set thread context of 2392 3692 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 1884 set thread context of 5004 1884 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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.
Processes:
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeicacls.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exepid process 2392 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe 2392 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe 5004 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe 5004 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exedescription pid process target process PID 3692 wrote to memory of 2392 3692 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3692 wrote to memory of 2392 3692 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3692 wrote to memory of 2392 3692 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3692 wrote to memory of 2392 3692 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3692 wrote to memory of 2392 3692 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3692 wrote to memory of 2392 3692 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3692 wrote to memory of 2392 3692 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3692 wrote to memory of 2392 3692 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3692 wrote to memory of 2392 3692 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3692 wrote to memory of 2392 3692 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2392 wrote to memory of 4588 2392 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe icacls.exe PID 2392 wrote to memory of 4588 2392 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe icacls.exe PID 2392 wrote to memory of 4588 2392 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe icacls.exe PID 2392 wrote to memory of 1884 2392 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2392 wrote to memory of 1884 2392 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2392 wrote to memory of 1884 2392 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 1884 wrote to memory of 5004 1884 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 1884 wrote to memory of 5004 1884 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 1884 wrote to memory of 5004 1884 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 1884 wrote to memory of 5004 1884 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 1884 wrote to memory of 5004 1884 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 1884 wrote to memory of 5004 1884 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 1884 wrote to memory of 5004 1884 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 1884 wrote to memory of 5004 1884 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 1884 wrote to memory of 5004 1884 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 1884 wrote to memory of 5004 1884 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3692 -
C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2392 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\333735bd-7394-4dd9-a0f8-ed654001c574" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:4588
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C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1884 -
C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:5004
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD567e486b2f148a3fca863728242b6273e
SHA1452a84c183d7ea5b7c015b597e94af8eef66d44a
SHA256facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb
SHA512d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e
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Filesize
436B
MD5971c514f84bba0785f80aa1c23edfd79
SHA1732acea710a87530c6b08ecdf32a110d254a54c8
SHA256f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
SHA51243dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize174B
MD5e2ce4cbfede33b5db0ea35ba2ad0ee7e
SHA18c641cf3ae45deae574aa4145e627d471f580eb3
SHA256d6501f90ef6a8b5e2c6f467b4c34cfcec6ab049cd9a5d9a433cf5f1d8bc22862
SHA5124629ce2cea67af501f49601deec9997e92ac3000ecb71f2fae4e063ca8b2df9f730fbc6c293cb7fc1057f45a82e99611b677dff745cd31cd0ea3b83c4ed44fd1
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD57fb32533998a369fee77023fec4f809b
SHA162de2a84e5954d82de51d28c29067d3d23604ded
SHA2567f11cdd779578393f0efbc6cc3a99e6be86c4fe7fffd70d6529e1d183c4cf2f3
SHA512622c3058db9455ec39dcec0e8f5e08921fde64b18c5e20b6be8d2d406afebb7e315f97f3c867bb9c470c34e14ff67dc3a8502dc40b400ef961778b306b0bf7c3
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C:\Users\Admin\AppData\Local\333735bd-7394-4dd9-a0f8-ed654001c574\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
Filesize754KB
MD551cdffb93a6be165bbf7657410530d0d
SHA1a479e69408af50ad5b5e12539fad8a98316f8fd0
SHA256b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70
SHA5121e6135c8399ab9289fa97afbf87a73b87a8d4850d73bffa67c41d38137723a0dcacc32c91340c260bf49bd2e2116d559fba218152d8ad6ab4e20ea0d6ea0d49c