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Analysis
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max time kernel
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max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
03/01/2025, 01:07
Static task
static1
Behavioral task
behavioral1
Sample
3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe
Resource
win10v2004-20241007-en
General
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Target
3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe
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Size
810KB
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MD5
42fe928b06e704ec51f6d9e679a4b2e4
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SHA1
f0fb600a2b9428b2dd33fd8a7d781f4f59423241
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SHA256
3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71
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SHA512
4ad727be5cc71cbcc33eaf0015e51370575137e74d460b65a2c5fa6abe7e153ce981ff3adb2937e1711d2b9a462db2b1e3cd353e971881bd5fded340f5e5075e
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SSDEEP
12288:x/4LAaAmpqSAQjWW6OCEVRxpHsSCfCP31pQlGYtQAN3WdYB89XoU2VwwZGEX8cAF:BpaYW5fRxpHs743vQ0xAnB8992VVsEv
Malware Config
Extracted
djvu
http://rlrz.org/fhsgtsspen6/get.php
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extension
.irjg
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offline_id
xcdIdDNFh62dy3iJsba1COhcfDENsbjPHQQ2Eht1
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payload_url
http://znpst.top/dl/build2.exe
http://rlrz.org/files/1/build3.exe
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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. You can get and look video overview decrypt tool: https://we.tl/t-xl2bbDnZSN Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0338gSd743d
Signatures
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Detected Djvu ransomware 15 IoCs
resource yara_rule behavioral2/memory/4480-2-0x0000000004D20000-0x0000000004E3B000-memory.dmp family_djvu behavioral2/memory/4868-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4868-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4868-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4868-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4868-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2292-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2292-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2292-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2292-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2292-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2292-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2292-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2292-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2292-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Djvu family
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 744 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c383c659-1197-44c8-82b3-75d1cddfe70d\\3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe\" --AutoStart" 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.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 12 api.2ip.ua 20 api.2ip.ua 10 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4480 set thread context of 4868 4480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 82 PID 1480 set thread context of 2292 1480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 86 -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4868 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 4868 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 2292 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 2292 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4480 wrote to memory of 4868 4480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 82 PID 4480 wrote to memory of 4868 4480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 82 PID 4480 wrote to memory of 4868 4480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 82 PID 4480 wrote to memory of 4868 4480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 82 PID 4480 wrote to memory of 4868 4480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 82 PID 4480 wrote to memory of 4868 4480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 82 PID 4480 wrote to memory of 4868 4480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 82 PID 4480 wrote to memory of 4868 4480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 82 PID 4480 wrote to memory of 4868 4480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 82 PID 4480 wrote to memory of 4868 4480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 82 PID 4868 wrote to memory of 744 4868 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 83 PID 4868 wrote to memory of 744 4868 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 83 PID 4868 wrote to memory of 744 4868 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 83 PID 4868 wrote to memory of 1480 4868 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 84 PID 4868 wrote to memory of 1480 4868 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 84 PID 4868 wrote to memory of 1480 4868 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 84 PID 1480 wrote to memory of 2292 1480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 86 PID 1480 wrote to memory of 2292 1480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 86 PID 1480 wrote to memory of 2292 1480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 86 PID 1480 wrote to memory of 2292 1480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 86 PID 1480 wrote to memory of 2292 1480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 86 PID 1480 wrote to memory of 2292 1480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 86 PID 1480 wrote to memory of 2292 1480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 86 PID 1480 wrote to memory of 2292 1480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 86 PID 1480 wrote to memory of 2292 1480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 86 PID 1480 wrote to memory of 2292 1480 3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe"C:\Users\Admin\AppData\Local\Temp\3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4480 -
C:\Users\Admin\AppData\Local\Temp\3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe"C:\Users\Admin\AppData\Local\Temp\3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.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:4868 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\c383c659-1197-44c8-82b3-75d1cddfe70d" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:744
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C:\Users\Admin\AppData\Local\Temp\3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe"C:\Users\Admin\AppData\Local\Temp\3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1480 -
C:\Users\Admin\AppData\Local\Temp\3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe"C:\Users\Admin\AppData\Local\Temp\3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2292
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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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
MD5d04d8667685ebdf0fcb77ae441f9c8a8
SHA16b7820b7aa8a86de6ac99c4b414ca6f9834f887b
SHA256ba8e051475b7ca9861c1a0b2c632232395e0e6c1d012c973008b708917e1f51f
SHA512cbe4c14ba5bd4e0ba13fefec17de2fe1aef96e7d34836bad7bae70990027d5563457ce2c2b702a40190f1aac5ce2df2ca6690bd20b77e98c7d606a6556329d6f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5c4e62a314a53726f4f11b13f842f8e03
SHA18d947923cd53a566238e3c605ef202fba0720071
SHA25625acd66832d9f9f90aa4cf2a4ad5da2c2135651083ee1d741f0ed13e2f3d4cfa
SHA5120d97531cd6d1544a8e6ad8680dd4c79c695651e7b13c68e41a17f03fa87d6b2fe3ce4d04bb127617b59172ff4aa0aa3fb44226a3fa02dcc13001fc17b93a44f4
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C:\Users\Admin\AppData\Local\c383c659-1197-44c8-82b3-75d1cddfe70d\3f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71.exe
Filesize810KB
MD542fe928b06e704ec51f6d9e679a4b2e4
SHA1f0fb600a2b9428b2dd33fd8a7d781f4f59423241
SHA2563f1596b4ebd177ec46e57ea0e6d208f32c1ebb93b448a4b5318cc116293d1e71
SHA5124ad727be5cc71cbcc33eaf0015e51370575137e74d460b65a2c5fa6abe7e153ce981ff3adb2937e1711d2b9a462db2b1e3cd353e971881bd5fded340f5e5075e