Analysis
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max time kernel
135s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
19/10/2022, 06:25
Static task
static1
Behavioral task
behavioral1
Sample
4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe
Resource
win10v2004-20220901-en
General
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Target
4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe
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Size
747KB
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MD5
9dc29f09976fa0fdf8e97f9f3abd31d9
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SHA1
2f5906cb263ad90e461dd836d3931b0f3a7139ff
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SHA256
4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393
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SHA512
f19fe8da682d6bbcab5ab0e0acbce1f2246692ab3bf4c2ea4a22e930f24c1377e4667645ccb65f82f1232c2b55ccd5adf9a837507606b1dc82b4976eb30a8ec6
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SSDEEP
12288:baSVDMo4O+SguvYD7CPBo/HvW9ts2yVaRWVk0TD0yIoTPL2WOmqE/+Fr:bRDxgKY66vW9tEJDLIBmqEer
Malware Config
Extracted
djvu
http://winnlinne.com/lancer/get.php
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extension
.tury
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offline_id
Uz66zEbmA32arcxwT81zZhkb23026oHz5iSp8qt1
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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 9 IoCs
resource yara_rule behavioral1/memory/4152-133-0x0000000002320000-0x000000000243B000-memory.dmp family_djvu behavioral1/memory/5080-135-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5080-136-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5080-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5080-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/5080-142-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3964-145-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3964-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3964-148-0x0000000000400000-0x0000000000537000-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 4156 build2.exe 3232 build2.exe 3156 build3.exe 1500 mstsca.exe -
Checks computer location settings 2 TTPs 3 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 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation build2.exe Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe -
Loads dropped DLL 2 IoCs
pid Process 3232 build2.exe 3232 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 4708 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\\0502496a-d3ac-40ae-8701-0bf89fd691e0\\4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe\" --AutoStart" 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.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 10 api.2ip.ua 11 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4152 set thread context of 5080 4152 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 82 PID 3228 set thread context of 3964 3228 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 92 PID 4156 set thread context of 3232 4156 build2.exe 95 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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 4388 schtasks.exe 3032 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 4260 timeout.exe -
Kills process with taskkill 1 IoCs
pid Process 2788 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 5080 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 5080 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 3964 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 3964 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 3232 build2.exe 3232 build2.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2788 taskkill.exe -
Suspicious use of WriteProcessMemory 55 IoCs
description pid Process procid_target PID 4152 wrote to memory of 5080 4152 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 82 PID 4152 wrote to memory of 5080 4152 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 82 PID 4152 wrote to memory of 5080 4152 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 82 PID 4152 wrote to memory of 5080 4152 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 82 PID 4152 wrote to memory of 5080 4152 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 82 PID 4152 wrote to memory of 5080 4152 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 82 PID 4152 wrote to memory of 5080 4152 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 82 PID 4152 wrote to memory of 5080 4152 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 82 PID 4152 wrote to memory of 5080 4152 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 82 PID 4152 wrote to memory of 5080 4152 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 82 PID 5080 wrote to memory of 4708 5080 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 89 PID 5080 wrote to memory of 4708 5080 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 89 PID 5080 wrote to memory of 4708 5080 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 89 PID 5080 wrote to memory of 3228 5080 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 90 PID 5080 wrote to memory of 3228 5080 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 90 PID 5080 wrote to memory of 3228 5080 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 90 PID 3228 wrote to memory of 3964 3228 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 92 PID 3228 wrote to memory of 3964 3228 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 92 PID 3228 wrote to memory of 3964 3228 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 92 PID 3228 wrote to memory of 3964 3228 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 92 PID 3228 wrote to memory of 3964 3228 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 92 PID 3228 wrote to memory of 3964 3228 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 92 PID 3228 wrote to memory of 3964 3228 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 92 PID 3228 wrote to memory of 3964 3228 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 92 PID 3228 wrote to memory of 3964 3228 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 92 PID 3228 wrote to memory of 3964 3228 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 92 PID 3964 wrote to memory of 4156 3964 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 94 PID 3964 wrote to memory of 4156 3964 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 94 PID 3964 wrote to memory of 4156 3964 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 94 PID 4156 wrote to memory of 3232 4156 build2.exe 95 PID 4156 wrote to memory of 3232 4156 build2.exe 95 PID 4156 wrote to memory of 3232 4156 build2.exe 95 PID 4156 wrote to memory of 3232 4156 build2.exe 95 PID 4156 wrote to memory of 3232 4156 build2.exe 95 PID 4156 wrote to memory of 3232 4156 build2.exe 95 PID 4156 wrote to memory of 3232 4156 build2.exe 95 PID 4156 wrote to memory of 3232 4156 build2.exe 95 PID 3964 wrote to memory of 3156 3964 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 96 PID 3964 wrote to memory of 3156 3964 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 96 PID 3964 wrote to memory of 3156 3964 4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe 96 PID 3156 wrote to memory of 4388 3156 build3.exe 97 PID 3156 wrote to memory of 4388 3156 build3.exe 97 PID 3156 wrote to memory of 4388 3156 build3.exe 97 PID 3232 wrote to memory of 3468 3232 build2.exe 99 PID 3232 wrote to memory of 3468 3232 build2.exe 99 PID 3232 wrote to memory of 3468 3232 build2.exe 99 PID 3468 wrote to memory of 2788 3468 cmd.exe 101 PID 3468 wrote to memory of 2788 3468 cmd.exe 101 PID 3468 wrote to memory of 2788 3468 cmd.exe 101 PID 3468 wrote to memory of 4260 3468 cmd.exe 103 PID 3468 wrote to memory of 4260 3468 cmd.exe 103 PID 3468 wrote to memory of 4260 3468 cmd.exe 103 PID 1500 wrote to memory of 3032 1500 mstsca.exe 105 PID 1500 wrote to memory of 3032 1500 mstsca.exe 105 PID 1500 wrote to memory of 3032 1500 mstsca.exe 105
Processes
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C:\Users\Admin\AppData\Local\Temp\4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe"C:\Users\Admin\AppData\Local\Temp\4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4152 -
C:\Users\Admin\AppData\Local\Temp\4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe"C:\Users\Admin\AppData\Local\Temp\4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5080 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\0502496a-d3ac-40ae-8701-0bf89fd691e0" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4708
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C:\Users\Admin\AppData\Local\Temp\4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe"C:\Users\Admin\AppData\Local\Temp\4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3228 -
C:\Users\Admin\AppData\Local\Temp\4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe"C:\Users\Admin\AppData\Local\Temp\4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3964 -
C:\Users\Admin\AppData\Local\ccd51ceb-0b40-4f5d-a4a0-c5a3d76d318b\build2.exe"C:\Users\Admin\AppData\Local\ccd51ceb-0b40-4f5d-a4a0-c5a3d76d318b\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4156 -
C:\Users\Admin\AppData\Local\ccd51ceb-0b40-4f5d-a4a0-c5a3d76d318b\build2.exe"C:\Users\Admin\AppData\Local\ccd51ceb-0b40-4f5d-a4a0-c5a3d76d318b\build2.exe"6⤵
- Executes dropped EXE
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3232 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" \/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\ccd51ceb-0b40-4f5d-a4a0-c5a3d76d318b\build2.exe" & del C:\PrograData\*.dll & exit7⤵
- Suspicious use of WriteProcessMemory
PID:3468 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im build2.exe /f8⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2788
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C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
PID:4260
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C:\Users\Admin\AppData\Local\ccd51ceb-0b40-4f5d-a4a0-c5a3d76d318b\build3.exe"C:\Users\Admin\AppData\Local\ccd51ceb-0b40-4f5d-a4a0-c5a3d76d318b\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3156 -
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:4388
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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:1500 -
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:3032
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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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C:\Users\Admin\AppData\Local\0502496a-d3ac-40ae-8701-0bf89fd691e0\4f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393.exe
Filesize747KB
MD59dc29f09976fa0fdf8e97f9f3abd31d9
SHA12f5906cb263ad90e461dd836d3931b0f3a7139ff
SHA2564f21800557062521f0357815008783a337065efa0a1d482b8fa4b9b900ccf393
SHA512f19fe8da682d6bbcab5ab0e0acbce1f2246692ab3bf4c2ea4a22e930f24c1377e4667645ccb65f82f1232c2b55ccd5adf9a837507606b1dc82b4976eb30a8ec6
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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