Analysis
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max time kernel
145s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
09-06-2023 07:05
Static task
static1
Behavioral task
behavioral1
Sample
01226899.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
01226899.exe
Resource
win10v2004-20230220-en
General
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Target
01226899.exe
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Size
785KB
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MD5
9983118a63a5839e2dc47a34a9b1f7cc
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SHA1
7c2d5588031ff180943034a71fcf416e851ac498
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SHA256
7fe21ce736d4d901791399487efc9db00a2e75ec7e6d59bf9c74a0e26bf3e0c1
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SHA512
88665c909a15b7e857cf6e390901347879dd5bf1dfdb2a9a663cc4e543561354501e0b794d83eaa60b5401ea552391acbb671bb2af46c46413ed3a666f67dc32
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SSDEEP
12288:Uv/o3GdCcCQ7GFBQjInOUpqynH/TQSm8o7J05dnqOx9vQ7vbjHB8zTLy:UvuGdC3j7ZOYfzuW5dq02hwTLy
Malware Config
Extracted
djvu
http://zexeq.com/test1/get.php
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extension
.nerz
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offline_id
0vTA6MA1m5nzrdffOCJC7YmAa4Lp6YNN8lOJ4mt1
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payload_url
http://colisumy.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Extracted
vidar
4.2
a81bcf59d85e6e13257840e65b9d1da8
https://steamcommunity.com/profiles/76561199511129510
https://t.me/rechnungsbetrag
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profile_id_v2
a81bcf59d85e6e13257840e65b9d1da8
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user_agent
Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.38 Safari/537.36 Brave/75
Signatures
-
Detected Djvu ransomware 17 IoCs
Processes:
resource yara_rule behavioral2/memory/5008-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3324-136-0x00000000022A0000-0x00000000023BB000-memory.dmp family_djvu behavioral2/memory/5008-135-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5008-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5008-145-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5008-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/644-151-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/644-152-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/644-157-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/644-158-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/644-159-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/644-262-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/644-271-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/644-273-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/644-274-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/644-275-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/644-276-0x0000000000400000-0x0000000000537000-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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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
01226899.exe01226899.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation 01226899.exe Key value queried \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation 01226899.exe -
Executes dropped EXE 2 IoCs
Processes:
build2.exebuild2.exepid process 2780 build2.exe 364 build2.exe -
Loads dropped DLL 2 IoCs
Processes:
build2.exepid process 364 build2.exe 364 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
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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
Processes:
01226899.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\58ac698a-4d73-4d0a-95af-1693e4a61ed0\\01226899.exe\" --AutoStart" 01226899.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.
Processes:
flow ioc 8 api.2ip.ua 9 api.2ip.ua 25 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
Processes:
01226899.exe01226899.exebuild2.exedescription pid process target process PID 3324 set thread context of 5008 3324 01226899.exe 01226899.exe PID 3644 set thread context of 644 3644 01226899.exe 01226899.exe PID 2780 set thread context of 364 2780 build2.exe build2.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
build2.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString build2.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 build2.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
01226899.exe01226899.exebuild2.exepid process 5008 01226899.exe 5008 01226899.exe 644 01226899.exe 644 01226899.exe 364 build2.exe 364 build2.exe -
Suspicious use of WriteProcessMemory 38 IoCs
Processes:
01226899.exe01226899.exe01226899.exe01226899.exebuild2.exedescription pid process target process PID 3324 wrote to memory of 5008 3324 01226899.exe 01226899.exe PID 3324 wrote to memory of 5008 3324 01226899.exe 01226899.exe PID 3324 wrote to memory of 5008 3324 01226899.exe 01226899.exe PID 3324 wrote to memory of 5008 3324 01226899.exe 01226899.exe PID 3324 wrote to memory of 5008 3324 01226899.exe 01226899.exe PID 3324 wrote to memory of 5008 3324 01226899.exe 01226899.exe PID 3324 wrote to memory of 5008 3324 01226899.exe 01226899.exe PID 3324 wrote to memory of 5008 3324 01226899.exe 01226899.exe PID 3324 wrote to memory of 5008 3324 01226899.exe 01226899.exe PID 3324 wrote to memory of 5008 3324 01226899.exe 01226899.exe PID 5008 wrote to memory of 4168 5008 01226899.exe icacls.exe PID 5008 wrote to memory of 4168 5008 01226899.exe icacls.exe PID 5008 wrote to memory of 4168 5008 01226899.exe icacls.exe PID 5008 wrote to memory of 3644 5008 01226899.exe 01226899.exe PID 5008 wrote to memory of 3644 5008 01226899.exe 01226899.exe PID 5008 wrote to memory of 3644 5008 01226899.exe 01226899.exe PID 3644 wrote to memory of 644 3644 01226899.exe 01226899.exe PID 3644 wrote to memory of 644 3644 01226899.exe 01226899.exe PID 3644 wrote to memory of 644 3644 01226899.exe 01226899.exe PID 3644 wrote to memory of 644 3644 01226899.exe 01226899.exe PID 3644 wrote to memory of 644 3644 01226899.exe 01226899.exe PID 3644 wrote to memory of 644 3644 01226899.exe 01226899.exe PID 3644 wrote to memory of 644 3644 01226899.exe 01226899.exe PID 3644 wrote to memory of 644 3644 01226899.exe 01226899.exe PID 3644 wrote to memory of 644 3644 01226899.exe 01226899.exe PID 3644 wrote to memory of 644 3644 01226899.exe 01226899.exe PID 644 wrote to memory of 2780 644 01226899.exe build2.exe PID 644 wrote to memory of 2780 644 01226899.exe build2.exe PID 644 wrote to memory of 2780 644 01226899.exe build2.exe PID 2780 wrote to memory of 364 2780 build2.exe build2.exe PID 2780 wrote to memory of 364 2780 build2.exe build2.exe PID 2780 wrote to memory of 364 2780 build2.exe build2.exe PID 2780 wrote to memory of 364 2780 build2.exe build2.exe PID 2780 wrote to memory of 364 2780 build2.exe build2.exe PID 2780 wrote to memory of 364 2780 build2.exe build2.exe PID 2780 wrote to memory of 364 2780 build2.exe build2.exe PID 2780 wrote to memory of 364 2780 build2.exe build2.exe PID 2780 wrote to memory of 364 2780 build2.exe build2.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\01226899.exe"C:\Users\Admin\AppData\Local\Temp\01226899.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\01226899.exe"C:\Users\Admin\AppData\Local\Temp\01226899.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\58ac698a-4d73-4d0a-95af-1693e4a61ed0" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\01226899.exe"C:\Users\Admin\AppData\Local\Temp\01226899.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\01226899.exe"C:\Users\Admin\AppData\Local\Temp\01226899.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe"C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe"C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\ProgramData\mozglue.dllFilesize
593KB
MD5c8fd9be83bc728cc04beffafc2907fe9
SHA195ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
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C:\ProgramData\nss3.dllFilesize
2.0MB
MD51cc453cdf74f31e4d913ff9c10acdde2
SHA16e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850DFilesize
2KB
MD55563e2e864598039e55b26e807237d0d
SHA1203a6b56231d9be8a0af47bd1f98d25cc2a1f429
SHA25621b8e73c4e89932cf644d426fa9590da164b18cf4153e66a6edcd964eedeeccb
SHA512b9b67d586f905ffb28974a5d33a6b7dc81a6aed325a57918f642c6447a3b92a05fdd72b49f73db27b636975f281e08c912b08852e2468c92daa8693cfa310b51
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711EFilesize
1KB
MD5c2be8a28b3ea966e6f0b0ecbaa5d33cc
SHA1a7a83c7ef21198921c91e89cccb1a611c735c238
SHA25656cfb5817c093d5b34263f510c48bdf9268916e2df27b7e133bcdc5132b9efa2
SHA51245c2e2f1b6a6166cccfac070a73e64f53c103d3c37c8e4154c08a98d3251a70f3253f036c2a14e734dd532870d3e34795b0181a8a248fd3bdfcf0b3475fe610c
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850DFilesize
488B
MD5d21248d33899fa3dc43a92341a9e47ce
SHA178cdc8a86cf54da7c9f22e5a5bc9b5440f3f24d2
SHA2568e6505fdd9e54223dc45c3936be4dcac5ee59269df1faf534a60e982c4b5fc37
SHA512db25f315bbba5c83e0159e72ab0ad6cdbd1eb7bfef8eb0b69ce60341b6c5506d0e86d192ed4144b9830f808d4472d137e9afd568affaaf2b51e5d956002deadd
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711EFilesize
482B
MD5f731406218d551d5ef7c9ec11d5800fd
SHA185a481e4f1a1076139c294a16a695766fecc8e62
SHA2568c1ad672f3c436ab48d91b47e3b299743be8313f5c2c79c6f22e4b1238750ccc
SHA512abcf8368b0ac49fac84749625493096948359240ff56a77bf1e00e5a16b12123f51576f735abe7a67624dc796d1a4335b288ba7fbe985ca2f74d7147997eb7f6
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C:\Users\Admin\AppData\Local\58ac698a-4d73-4d0a-95af-1693e4a61ed0\01226899.exeFilesize
785KB
MD59983118a63a5839e2dc47a34a9b1f7cc
SHA17c2d5588031ff180943034a71fcf416e851ac498
SHA2567fe21ce736d4d901791399487efc9db00a2e75ec7e6d59bf9c74a0e26bf3e0c1
SHA51288665c909a15b7e857cf6e390901347879dd5bf1dfdb2a9a663cc4e543561354501e0b794d83eaa60b5401ea552391acbb671bb2af46c46413ed3a666f67dc32
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C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exeFilesize
352KB
MD5f76b7a03bc4db7e669adc6a0eb80322a
SHA1ad3ef2ea2dcf95e805c7be56a7d63f654328121e
SHA256c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d
SHA512626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c
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C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exeFilesize
352KB
MD5f76b7a03bc4db7e669adc6a0eb80322a
SHA1ad3ef2ea2dcf95e805c7be56a7d63f654328121e
SHA256c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d
SHA512626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c
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C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exeFilesize
352KB
MD5f76b7a03bc4db7e669adc6a0eb80322a
SHA1ad3ef2ea2dcf95e805c7be56a7d63f654328121e
SHA256c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d
SHA512626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c
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C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exeFilesize
352KB
MD5f76b7a03bc4db7e669adc6a0eb80322a
SHA1ad3ef2ea2dcf95e805c7be56a7d63f654328121e
SHA256c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d
SHA512626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c
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memory/364-254-0x0000000000400000-0x000000000046A000-memory.dmpFilesize
424KB
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memory/364-175-0x0000000000400000-0x000000000046A000-memory.dmpFilesize
424KB
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memory/364-176-0x0000000000400000-0x000000000046A000-memory.dmpFilesize
424KB
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memory/364-173-0x0000000000400000-0x000000000046A000-memory.dmpFilesize
424KB
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memory/364-186-0x0000000061E00000-0x0000000061EF3000-memory.dmpFilesize
972KB
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memory/364-171-0x0000000000400000-0x000000000046A000-memory.dmpFilesize
424KB
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memory/364-256-0x0000000000400000-0x000000000046A000-memory.dmpFilesize
424KB
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memory/364-257-0x0000000000400000-0x000000000046A000-memory.dmpFilesize
424KB
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memory/644-157-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/644-271-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/644-276-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/644-158-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/644-275-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/644-274-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/644-273-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/644-159-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/644-262-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/644-152-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/644-151-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2780-174-0x0000000004900000-0x0000000004956000-memory.dmpFilesize
344KB
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memory/3324-136-0x00000000022A0000-0x00000000023BB000-memory.dmpFilesize
1.1MB
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memory/5008-147-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5008-135-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5008-134-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5008-145-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5008-137-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB