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Analysis
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max time kernel
144s -
max time network
133s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
22/12/2024, 03:13
Static task
static1
Behavioral task
behavioral1
Sample
b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
Resource
win10v2004-20241007-en
General
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Target
b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
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Size
761KB
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MD5
d829a46501729b196b794f955aa69cc0
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SHA1
20efd5be2d09c31001c7b107388a9aee76f41eea
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SHA256
b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41
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SHA512
1497087e6fc04c23043da0974db4cd98c4c77a1509f648b2e230f0a8f5727fae3c8dd463fb1d9cc1e7094fb9692c35630999f7c14c4c28b837dc6dd72e75d9ec
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SSDEEP
12288:WvbhHdeD79q7DmMHUvJqHv/bpxwW4nnpdT0LHdVdjl8/e+7krnhOQUc4Mng/KWDi:E7eVSeJqPjQXnoLHdVdm/37kMQb4pKUi
Malware Config
Extracted
djvu
http://fuyt.org/test1/get.php
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extension
.ghas
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offline_id
miqhSGmGE63yWs53FTz0fnp8eCARpnaYE3O3p2t1
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payload_url
http://zerit.top/dl/build2.exe
http://fuyt.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-0SLhZxAjRX 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: 0445JIjdm
Signatures
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Detected Djvu ransomware 15 IoCs
resource yara_rule behavioral1/memory/2676-2-0x0000000001DF0000-0x0000000001F0B000-memory.dmp family_djvu behavioral1/memory/1880-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1880-7-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1880-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1880-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2748-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2748-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2748-46-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2748-47-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2748-48-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2748-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2748-61-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2748-64-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2748-63-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2748-65-0x0000000000400000-0x0000000000537000-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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Modifies file permissions 1 TTPs 1 IoCs
pid Process 2736 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6cb8e1d3-de1c-4284-9b1c-c63e719ee131\\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe\" --AutoStart" b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.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 4 api.2ip.ua 5 api.2ip.ua 9 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2676 set thread context of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 2808 set thread context of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34 -
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 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1880 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 1880 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 2748 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 2748 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2676 wrote to memory of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 2676 wrote to memory of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 2676 wrote to memory of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 2676 wrote to memory of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 2676 wrote to memory of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 2676 wrote to memory of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 2676 wrote to memory of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 2676 wrote to memory of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 2676 wrote to memory of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 2676 wrote to memory of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 2676 wrote to memory of 1880 2676 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 30 PID 1880 wrote to memory of 2736 1880 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 32 PID 1880 wrote to memory of 2736 1880 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 32 PID 1880 wrote to memory of 2736 1880 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 32 PID 1880 wrote to memory of 2736 1880 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 32 PID 1880 wrote to memory of 2808 1880 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 33 PID 1880 wrote to memory of 2808 1880 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 33 PID 1880 wrote to memory of 2808 1880 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 33 PID 1880 wrote to memory of 2808 1880 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 33 PID 2808 wrote to memory of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34 PID 2808 wrote to memory of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34 PID 2808 wrote to memory of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34 PID 2808 wrote to memory of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34 PID 2808 wrote to memory of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34 PID 2808 wrote to memory of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34 PID 2808 wrote to memory of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34 PID 2808 wrote to memory of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34 PID 2808 wrote to memory of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34 PID 2808 wrote to memory of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34 PID 2808 wrote to memory of 2748 2808 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 34
Processes
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C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2676 -
C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1880 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\6cb8e1d3-de1c-4284-9b1c-c63e719ee131" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:2736
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C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2808 -
C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2748
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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
MD5bb66dd57a431314511b698ea0b87cb5c
SHA1239255d163f12f47e7c356d2eed46e67ac30b733
SHA25641d831598a78a17389f83d6b48734b2660a354d21105392681bfd61861a59cb8
SHA5120ce59466a62a862b7a96aa628d3e57c30466f28f920a2e0d59c88705ad6263de38430db44bb0c4b7687731737da30eed514514c67ee5b1b6e929f4ca2c5ba201
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD593c15de234c24702e8a334ff6cb8a4ca
SHA104812ddcb4bd07aa78d6343060274927c0a794eb
SHA256d6773070254a62804f808dea270313a32cf0b7921f13eb9475b3d22c77f25b4c
SHA512b155e4730a1923d3cd7366b813eee22330f7493eab6d8f674c60d40dc19bc79bff87a6e5bcd7e6f217cb752def4f175f3130f7738aa6b2438ab0e5643f63a0e7
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C:\Users\Admin\AppData\Local\6cb8e1d3-de1c-4284-9b1c-c63e719ee131\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
Filesize761KB
MD5d829a46501729b196b794f955aa69cc0
SHA120efd5be2d09c31001c7b107388a9aee76f41eea
SHA256b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41
SHA5121497087e6fc04c23043da0974db4cd98c4c77a1509f648b2e230f0a8f5727fae3c8dd463fb1d9cc1e7094fb9692c35630999f7c14c4c28b837dc6dd72e75d9ec
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b