Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
21/05/2023, 18:52
Static task
static1
Behavioral task
behavioral1
Sample
renderer759.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
renderer759.exe
Resource
win10v2004-20230220-en
General
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Target
renderer759.exe
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Size
813KB
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MD5
5683f09cf999072fb56cdbba35b540b9
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SHA1
b516cef10502a2dae0a42a5875892751a50aff5c
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SHA256
f5835b5543e33abd1df38c5f0ddc8aae12a3bdc9f7d789f074cfed28ba39fcb0
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SHA512
d10ec2c1b1cdf986e5f4e19234f2aef7ac91bfe85c4b0b5b2c76aec29c7b9b692c8c9b3c8ccec2e3ea1e11ecb9f5ed776141c47a80b9ba1acbd4189931ca1581
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SSDEEP
12288:eErGXlDFnr7lv6q95CxMb0VBHExKH+dzBexM2P+G+q/3dNLHsQ4w+nB:eBHnHUq3C3VSDWC2P+Lq/3rLMQZ+nB
Malware Config
Extracted
djvu
http://zexeq.com/lancer/get.php
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extension
.gatq
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offline_id
jB2aJtVEWRwbJf76a6OKB8sn0BtTgNlHYUC5wLt1
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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
3.9
9dfa7ee730fa2f1efb5ed51dbbec22f5
https://steamcommunity.com/profiles/76561199263069598
https://t.me/cybehost
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profile_id_v2
9dfa7ee730fa2f1efb5ed51dbbec22f5
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user_agent
Mozilla/5.0 (compatible; Konqueror/3.5; Linux) KHTML/3.5.7 (like Gecko) (Debian)
Signatures
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Detected Djvu ransomware 16 IoCs
resource yara_rule behavioral2/memory/4276-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4276-135-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1712-137-0x00000000023E0000-0x00000000024FB000-memory.dmp family_djvu behavioral2/memory/4276-136-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4276-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4276-148-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1152-151-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1152-152-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1152-153-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1152-156-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1152-157-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1152-161-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1152-163-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1152-164-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1152-195-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1152-279-0x0000000000400000-0x0000000000537000-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.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation renderer759.exe Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation renderer759.exe -
Executes dropped EXE 4 IoCs
pid Process 2368 build2.exe 4464 build2.exe 3356 build3.exe 4632 mstsca.exe -
Loads dropped DLL 2 IoCs
pid Process 4464 build2.exe 4464 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1452 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-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a829ad7f-dc50-49d9-92d6-9d0a433aeb6b\\renderer759.exe\" --AutoStart" renderer759.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 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 5 api.2ip.ua 6 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1712 set thread context of 4276 1712 renderer759.exe 84 PID 656 set thread context of 1152 656 renderer759.exe 88 PID 2368 set thread context of 4464 2368 build2.exe 95 -
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.
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 1684 schtasks.exe 2140 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4276 renderer759.exe 4276 renderer759.exe 1152 renderer759.exe 1152 renderer759.exe 4464 build2.exe 4464 build2.exe -
Suspicious use of WriteProcessMemory 47 IoCs
description pid Process procid_target PID 1712 wrote to memory of 4276 1712 renderer759.exe 84 PID 1712 wrote to memory of 4276 1712 renderer759.exe 84 PID 1712 wrote to memory of 4276 1712 renderer759.exe 84 PID 1712 wrote to memory of 4276 1712 renderer759.exe 84 PID 1712 wrote to memory of 4276 1712 renderer759.exe 84 PID 1712 wrote to memory of 4276 1712 renderer759.exe 84 PID 1712 wrote to memory of 4276 1712 renderer759.exe 84 PID 1712 wrote to memory of 4276 1712 renderer759.exe 84 PID 1712 wrote to memory of 4276 1712 renderer759.exe 84 PID 1712 wrote to memory of 4276 1712 renderer759.exe 84 PID 4276 wrote to memory of 1452 4276 renderer759.exe 85 PID 4276 wrote to memory of 1452 4276 renderer759.exe 85 PID 4276 wrote to memory of 1452 4276 renderer759.exe 85 PID 4276 wrote to memory of 656 4276 renderer759.exe 86 PID 4276 wrote to memory of 656 4276 renderer759.exe 86 PID 4276 wrote to memory of 656 4276 renderer759.exe 86 PID 656 wrote to memory of 1152 656 renderer759.exe 88 PID 656 wrote to memory of 1152 656 renderer759.exe 88 PID 656 wrote to memory of 1152 656 renderer759.exe 88 PID 656 wrote to memory of 1152 656 renderer759.exe 88 PID 656 wrote to memory of 1152 656 renderer759.exe 88 PID 656 wrote to memory of 1152 656 renderer759.exe 88 PID 656 wrote to memory of 1152 656 renderer759.exe 88 PID 656 wrote to memory of 1152 656 renderer759.exe 88 PID 656 wrote to memory of 1152 656 renderer759.exe 88 PID 656 wrote to memory of 1152 656 renderer759.exe 88 PID 1152 wrote to memory of 2368 1152 renderer759.exe 94 PID 1152 wrote to memory of 2368 1152 renderer759.exe 94 PID 1152 wrote to memory of 2368 1152 renderer759.exe 94 PID 2368 wrote to memory of 4464 2368 build2.exe 95 PID 2368 wrote to memory of 4464 2368 build2.exe 95 PID 2368 wrote to memory of 4464 2368 build2.exe 95 PID 2368 wrote to memory of 4464 2368 build2.exe 95 PID 2368 wrote to memory of 4464 2368 build2.exe 95 PID 2368 wrote to memory of 4464 2368 build2.exe 95 PID 2368 wrote to memory of 4464 2368 build2.exe 95 PID 2368 wrote to memory of 4464 2368 build2.exe 95 PID 2368 wrote to memory of 4464 2368 build2.exe 95 PID 1152 wrote to memory of 3356 1152 renderer759.exe 96 PID 1152 wrote to memory of 3356 1152 renderer759.exe 96 PID 1152 wrote to memory of 3356 1152 renderer759.exe 96 PID 3356 wrote to memory of 2140 3356 build3.exe 97 PID 3356 wrote to memory of 2140 3356 build3.exe 97 PID 3356 wrote to memory of 2140 3356 build3.exe 97 PID 4632 wrote to memory of 1684 4632 mstsca.exe 102 PID 4632 wrote to memory of 1684 4632 mstsca.exe 102 PID 4632 wrote to memory of 1684 4632 mstsca.exe 102
Processes
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C:\Users\Admin\AppData\Local\Temp\renderer759.exe"C:\Users\Admin\AppData\Local\Temp\renderer759.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1712 -
C:\Users\Admin\AppData\Local\Temp\renderer759.exe"C:\Users\Admin\AppData\Local\Temp\renderer759.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4276 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\a829ad7f-dc50-49d9-92d6-9d0a433aeb6b" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1452
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C:\Users\Admin\AppData\Local\Temp\renderer759.exe"C:\Users\Admin\AppData\Local\Temp\renderer759.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:656 -
C:\Users\Admin\AppData\Local\Temp\renderer759.exe"C:\Users\Admin\AppData\Local\Temp\renderer759.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1152 -
C:\Users\Admin\AppData\Local\2ab61f93-6d64-4fcd-a18d-4bc33c24a1a0\build2.exe"C:\Users\Admin\AppData\Local\2ab61f93-6d64-4fcd-a18d-4bc33c24a1a0\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2368 -
C:\Users\Admin\AppData\Local\2ab61f93-6d64-4fcd-a18d-4bc33c24a1a0\build2.exe"C:\Users\Admin\AppData\Local\2ab61f93-6d64-4fcd-a18d-4bc33c24a1a0\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4464
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C:\Users\Admin\AppData\Local\2ab61f93-6d64-4fcd-a18d-4bc33c24a1a0\build3.exe"C:\Users\Admin\AppData\Local\2ab61f93-6d64-4fcd-a18d-4bc33c24a1a0\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3356 -
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:2140
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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:4632 -
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:1684
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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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Filesize
379KB
MD537b6aab56a0f770ce58a670322361a1c
SHA187606604cdaa89b93d4d1b5e3e12f5ec24f60016
SHA2563d9cf227ef3c29b9ca22c66359fdd61d9b3d3f2bb197ec3df42d49ff22b989a4
SHA5127b99a56e2160b3f910f75b5d21975587310ad61738613cefbce0d0b25c9d3af07ebeae9c6668907e00e2866259fcca079b4137e06c0d7cede5c5e5178d030a1e
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Filesize
379KB
MD537b6aab56a0f770ce58a670322361a1c
SHA187606604cdaa89b93d4d1b5e3e12f5ec24f60016
SHA2563d9cf227ef3c29b9ca22c66359fdd61d9b3d3f2bb197ec3df42d49ff22b989a4
SHA5127b99a56e2160b3f910f75b5d21975587310ad61738613cefbce0d0b25c9d3af07ebeae9c6668907e00e2866259fcca079b4137e06c0d7cede5c5e5178d030a1e
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Filesize
379KB
MD537b6aab56a0f770ce58a670322361a1c
SHA187606604cdaa89b93d4d1b5e3e12f5ec24f60016
SHA2563d9cf227ef3c29b9ca22c66359fdd61d9b3d3f2bb197ec3df42d49ff22b989a4
SHA5127b99a56e2160b3f910f75b5d21975587310ad61738613cefbce0d0b25c9d3af07ebeae9c6668907e00e2866259fcca079b4137e06c0d7cede5c5e5178d030a1e
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Filesize
379KB
MD537b6aab56a0f770ce58a670322361a1c
SHA187606604cdaa89b93d4d1b5e3e12f5ec24f60016
SHA2563d9cf227ef3c29b9ca22c66359fdd61d9b3d3f2bb197ec3df42d49ff22b989a4
SHA5127b99a56e2160b3f910f75b5d21975587310ad61738613cefbce0d0b25c9d3af07ebeae9c6668907e00e2866259fcca079b4137e06c0d7cede5c5e5178d030a1e
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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
813KB
MD55683f09cf999072fb56cdbba35b540b9
SHA1b516cef10502a2dae0a42a5875892751a50aff5c
SHA256f5835b5543e33abd1df38c5f0ddc8aae12a3bdc9f7d789f074cfed28ba39fcb0
SHA512d10ec2c1b1cdf986e5f4e19234f2aef7ac91bfe85c4b0b5b2c76aec29c7b9b692c8c9b3c8ccec2e3ea1e11ecb9f5ed776141c47a80b9ba1acbd4189931ca1581
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a