Analysis
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max time kernel
140s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
11/10/2022, 14:21
Static task
static1
Behavioral task
behavioral1
Sample
89259c54c606cd981a4009df679b4f7b.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
89259c54c606cd981a4009df679b4f7b.exe
Resource
win10v2004-20220901-en
General
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Target
89259c54c606cd981a4009df679b4f7b.exe
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Size
729KB
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MD5
89259c54c606cd981a4009df679b4f7b
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SHA1
8214aec5f70da8e9a6e0790ff1589f09ccbc4f13
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SHA256
86991719c854f9ee191c5212aa100155dc8a34df4ba6812e082368f5d64d07b9
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SHA512
915783969a337aa7eda6254d01871aff63b25649b66b5d8de55f38530c6d43c727dfff9639e8e2907822bf69afb8a5dc004be4c9a1a308e97b8d418b05c98b81
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SSDEEP
12288:DB4v06RgABssb+rVB2MLJgdjvo0Io9O7yPpOVu1eh4wNhmc1C+uzO3tG9F6/0:DaBvBr65XlJxog2PwVu1eh4wu0CnzB9j
Malware Config
Extracted
djvu
http://winnlinne.com/test1/get.php
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extension
.pohj
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offline_id
tHl9RvVtHhFQisMomKMdXzz2soNLhV0cuok85it1
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payload_url
http://rgyui.top/dl/build2.exe
http://winnlinne.com/files/1/build3.exe
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ransomnote
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Extracted
vidar
55
517
https://t.me/truewallets
https://mas.to/@zara99
http://116.203.10.3:80
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profile_id
517
Signatures
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Detected Djvu ransomware 10 IoCs
resource yara_rule behavioral2/memory/424-136-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/424-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4648-140-0x0000000002520000-0x000000000263B000-memory.dmp family_djvu behavioral2/memory/424-139-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/424-143-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/424-145-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1704-148-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1704-150-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1704-155-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1704-191-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Downloads MZ/PE file
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Executes dropped EXE 4 IoCs
pid Process 4328 build2.exe 3148 build2.exe 3484 build3.exe 3344 mstsca.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 89259c54c606cd981a4009df679b4f7b.exe Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 89259c54c606cd981a4009df679b4f7b.exe -
Loads dropped DLL 2 IoCs
pid Process 3148 build2.exe 3148 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1220 icacls.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a75d9029-17f5-4ef8-860a-08053241aaf3\\89259c54c606cd981a4009df679b4f7b.exe\" --AutoStart" 89259c54c606cd981a4009df679b4f7b.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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 9 api.2ip.ua 10 api.2ip.ua 15 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4648 set thread context of 424 4648 89259c54c606cd981a4009df679b4f7b.exe 83 PID 2912 set thread context of 1704 2912 89259c54c606cd981a4009df679b4f7b.exe 87 PID 4328 set thread context of 3148 4328 build2.exe 89 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
pid pid_target Process procid_target 2648 3148 WerFault.exe 89 -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 build2.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString build2.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4504 schtasks.exe 3996 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 424 89259c54c606cd981a4009df679b4f7b.exe 424 89259c54c606cd981a4009df679b4f7b.exe 1704 89259c54c606cd981a4009df679b4f7b.exe 1704 89259c54c606cd981a4009df679b4f7b.exe 3148 build2.exe 3148 build2.exe -
Suspicious use of WriteProcessMemory 46 IoCs
description pid Process procid_target PID 4648 wrote to memory of 424 4648 89259c54c606cd981a4009df679b4f7b.exe 83 PID 4648 wrote to memory of 424 4648 89259c54c606cd981a4009df679b4f7b.exe 83 PID 4648 wrote to memory of 424 4648 89259c54c606cd981a4009df679b4f7b.exe 83 PID 4648 wrote to memory of 424 4648 89259c54c606cd981a4009df679b4f7b.exe 83 PID 4648 wrote to memory of 424 4648 89259c54c606cd981a4009df679b4f7b.exe 83 PID 4648 wrote to memory of 424 4648 89259c54c606cd981a4009df679b4f7b.exe 83 PID 4648 wrote to memory of 424 4648 89259c54c606cd981a4009df679b4f7b.exe 83 PID 4648 wrote to memory of 424 4648 89259c54c606cd981a4009df679b4f7b.exe 83 PID 4648 wrote to memory of 424 4648 89259c54c606cd981a4009df679b4f7b.exe 83 PID 4648 wrote to memory of 424 4648 89259c54c606cd981a4009df679b4f7b.exe 83 PID 424 wrote to memory of 1220 424 89259c54c606cd981a4009df679b4f7b.exe 84 PID 424 wrote to memory of 1220 424 89259c54c606cd981a4009df679b4f7b.exe 84 PID 424 wrote to memory of 1220 424 89259c54c606cd981a4009df679b4f7b.exe 84 PID 424 wrote to memory of 2912 424 89259c54c606cd981a4009df679b4f7b.exe 85 PID 424 wrote to memory of 2912 424 89259c54c606cd981a4009df679b4f7b.exe 85 PID 424 wrote to memory of 2912 424 89259c54c606cd981a4009df679b4f7b.exe 85 PID 2912 wrote to memory of 1704 2912 89259c54c606cd981a4009df679b4f7b.exe 87 PID 2912 wrote to memory of 1704 2912 89259c54c606cd981a4009df679b4f7b.exe 87 PID 2912 wrote to memory of 1704 2912 89259c54c606cd981a4009df679b4f7b.exe 87 PID 2912 wrote to memory of 1704 2912 89259c54c606cd981a4009df679b4f7b.exe 87 PID 2912 wrote to memory of 1704 2912 89259c54c606cd981a4009df679b4f7b.exe 87 PID 2912 wrote to memory of 1704 2912 89259c54c606cd981a4009df679b4f7b.exe 87 PID 2912 wrote to memory of 1704 2912 89259c54c606cd981a4009df679b4f7b.exe 87 PID 2912 wrote to memory of 1704 2912 89259c54c606cd981a4009df679b4f7b.exe 87 PID 2912 wrote to memory of 1704 2912 89259c54c606cd981a4009df679b4f7b.exe 87 PID 2912 wrote to memory of 1704 2912 89259c54c606cd981a4009df679b4f7b.exe 87 PID 1704 wrote to memory of 4328 1704 89259c54c606cd981a4009df679b4f7b.exe 88 PID 1704 wrote to memory of 4328 1704 89259c54c606cd981a4009df679b4f7b.exe 88 PID 1704 wrote to memory of 4328 1704 89259c54c606cd981a4009df679b4f7b.exe 88 PID 4328 wrote to memory of 3148 4328 build2.exe 89 PID 4328 wrote to memory of 3148 4328 build2.exe 89 PID 4328 wrote to memory of 3148 4328 build2.exe 89 PID 4328 wrote to memory of 3148 4328 build2.exe 89 PID 4328 wrote to memory of 3148 4328 build2.exe 89 PID 4328 wrote to memory of 3148 4328 build2.exe 89 PID 4328 wrote to memory of 3148 4328 build2.exe 89 PID 4328 wrote to memory of 3148 4328 build2.exe 89 PID 1704 wrote to memory of 3484 1704 89259c54c606cd981a4009df679b4f7b.exe 90 PID 1704 wrote to memory of 3484 1704 89259c54c606cd981a4009df679b4f7b.exe 90 PID 1704 wrote to memory of 3484 1704 89259c54c606cd981a4009df679b4f7b.exe 90 PID 3484 wrote to memory of 4504 3484 build3.exe 91 PID 3484 wrote to memory of 4504 3484 build3.exe 91 PID 3484 wrote to memory of 4504 3484 build3.exe 91 PID 3344 wrote to memory of 3996 3344 mstsca.exe 102 PID 3344 wrote to memory of 3996 3344 mstsca.exe 102 PID 3344 wrote to memory of 3996 3344 mstsca.exe 102
Processes
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C:\Users\Admin\AppData\Local\Temp\89259c54c606cd981a4009df679b4f7b.exe"C:\Users\Admin\AppData\Local\Temp\89259c54c606cd981a4009df679b4f7b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4648 -
C:\Users\Admin\AppData\Local\Temp\89259c54c606cd981a4009df679b4f7b.exe"C:\Users\Admin\AppData\Local\Temp\89259c54c606cd981a4009df679b4f7b.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:424 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\a75d9029-17f5-4ef8-860a-08053241aaf3" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1220
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C:\Users\Admin\AppData\Local\Temp\89259c54c606cd981a4009df679b4f7b.exe"C:\Users\Admin\AppData\Local\Temp\89259c54c606cd981a4009df679b4f7b.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2912 -
C:\Users\Admin\AppData\Local\Temp\89259c54c606cd981a4009df679b4f7b.exe"C:\Users\Admin\AppData\Local\Temp\89259c54c606cd981a4009df679b4f7b.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1704 -
C:\Users\Admin\AppData\Local\bc13966e-5b2e-4c09-b6fc-095b445dbc11\build2.exe"C:\Users\Admin\AppData\Local\bc13966e-5b2e-4c09-b6fc-095b445dbc11\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4328 -
C:\Users\Admin\AppData\Local\bc13966e-5b2e-4c09-b6fc-095b445dbc11\build2.exe"C:\Users\Admin\AppData\Local\bc13966e-5b2e-4c09-b6fc-095b445dbc11\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3148 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3148 -s 16007⤵
- Program crash
PID:2648
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C:\Users\Admin\AppData\Local\bc13966e-5b2e-4c09-b6fc-095b445dbc11\build3.exe"C:\Users\Admin\AppData\Local\bc13966e-5b2e-4c09-b6fc-095b445dbc11\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3484 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"6⤵
- Creates scheduled task(s)
PID:4504
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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exeC:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3344 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"2⤵
- Creates scheduled task(s)
PID:3996
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3148 -ip 31481⤵PID:4248
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
593KB
MD5c8fd9be83bc728cc04beffafc2907fe9
SHA195ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
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Filesize
2.0MB
MD51cc453cdf74f31e4d913ff9c10acdde2
SHA16e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize2KB
MD56f59ed058aa06aaf5ec6213b955aabd4
SHA1baf7b828a563b8fb6111e4ce35e0055575ad80b4
SHA2562d82e2629fa2e08f28b43b15da43dff56c7f4b23b39d66109c7c61998e35b4d5
SHA5126b0f041dafb98b9eaf70ac0d20a98c56e1c42231c4a4ae6e11582b20d20bf8f96dfd7747739a10d77368994441adb0e181b356f8569697b1f22ab4fe931170ce
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize1KB
MD50698dbc93ba7b6bef73ba316695f8317
SHA1a444078ff1eb7c88f52cb4e324365926b491ed47
SHA256263292040d77903899257c1d21201dc64d6f8d6b5a1d945cd5b28d0124d7906c
SHA512ebacaa7009aebb88199cd70fd0bb3afe69ed300318cb633edd1c0404e42aef829617f589bcbad6cb7ab4bd0a8ae87f7df1435c786184ecc5de61c8fc6950a900
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize488B
MD5f64c04decde5cdd21ed5cb3ce95bd567
SHA167e0d165ffe8b9462c2f7c2b6031c26a4ea8c45a
SHA256e6317034f1d98ba02034eb6267f622c98ebc951e178943741844c83ab89b8284
SHA5128760fb63edccea7903690901624f4f4f87eb908dbbb15fab0f28c5c65b0719ccd78b22d19a4492e3dcea84c6543a6fffbd72cb72937ce72bdce904163d354993
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize482B
MD546d0aeb7ba6c6c4658a09f4c84d1215e
SHA10be8518e381a6849753f457bbd5bb610457609aa
SHA256a1f8480d441ad21284dc6c70dc661752f12ae84f798710ba55e4abcc4148825e
SHA51280661ec886d07e47888c295928dff4156fad9a765f99d8e7f29eb5809ed1a14c29579707ee19e76d3bd6342d89596c44d8a9e5a0bac7e3a02051e7b1418afbcd
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C:\Users\Admin\AppData\Local\a75d9029-17f5-4ef8-860a-08053241aaf3\89259c54c606cd981a4009df679b4f7b.exe
Filesize729KB
MD589259c54c606cd981a4009df679b4f7b
SHA18214aec5f70da8e9a6e0790ff1589f09ccbc4f13
SHA25686991719c854f9ee191c5212aa100155dc8a34df4ba6812e082368f5d64d07b9
SHA512915783969a337aa7eda6254d01871aff63b25649b66b5d8de55f38530c6d43c727dfff9639e8e2907822bf69afb8a5dc004be4c9a1a308e97b8d418b05c98b81
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Filesize
321KB
MD55fd8c38657bb9393bb4736c880675223
SHA1f3a03b2e75cef22262f6677e3832b6ad9327905c
SHA2562a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6
SHA51243c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe
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Filesize
321KB
MD55fd8c38657bb9393bb4736c880675223
SHA1f3a03b2e75cef22262f6677e3832b6ad9327905c
SHA2562a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6
SHA51243c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe
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Filesize
321KB
MD55fd8c38657bb9393bb4736c880675223
SHA1f3a03b2e75cef22262f6677e3832b6ad9327905c
SHA2562a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6
SHA51243c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a