Analysis
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max time kernel
98s -
max time network
131s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
27-09-2022 18:52
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
General
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Target
file.exe
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Size
846KB
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MD5
b82e3da9b68a969622a59c6536ce1251
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SHA1
790c1f1497d356951eb32eeae1c2acdcee768c36
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SHA256
9f3b9459fbc0b2d77e67a2c4c132125f07f2109a7e56bbf3e3b0d02c8a1e8b55
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SHA512
efa8f689df57b816bdbc723c69d8cd24947c9577cefff0305b6a61b9a618099299954264ba304fd7a403c23e53c3fa71da84209bb640f58fe746cd0c30696c05
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SSDEEP
24576:q346yXnF1OtPE7Iuu+g0qZYrSV3S2DQri:q34LXzTI5+C8SNS2DQ
Malware Config
Extracted
djvu
http://winnlinne.com/test3/get.php
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extension
.ofoq
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offline_id
xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1
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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
54.7
517
https://t.me/trampapanam
https://nerdculture.de/@yoxhyp
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profile_id
517
Signatures
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Detected Djvu ransomware 9 IoCs
resource yara_rule behavioral2/memory/4548-133-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4548-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4676-136-0x0000000002210000-0x000000000232B000-memory.dmp family_djvu behavioral2/memory/4548-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4548-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4548-142-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4728-145-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4728-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4728-148-0x0000000000400000-0x0000000000537000-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 4828 build2.exe 4724 build3.exe 2488 build2.exe 4092 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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation build2.exe -
Loads dropped DLL 2 IoCs
pid Process 2488 build2.exe 2488 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3144 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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\2326b1d3-9fd3-4fad-8608-756e19192e9b\\file.exe\" --AutoStart" file.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 16 api.2ip.ua 17 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4676 set thread context of 4548 4676 file.exe 80 PID 624 set thread context of 4728 624 file.exe 90 PID 4828 set thread context of 2488 4828 build2.exe 96 -
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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString build2.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 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 1836 schtasks.exe 2396 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 2304 timeout.exe -
Kills process with taskkill 1 IoCs
pid Process 4424 taskkill.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 file.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 file.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4548 file.exe 4548 file.exe 4728 file.exe 4728 file.exe 2488 build2.exe 2488 build2.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4424 taskkill.exe -
Suspicious use of WriteProcessMemory 56 IoCs
description pid Process procid_target PID 4676 wrote to memory of 4548 4676 file.exe 80 PID 4676 wrote to memory of 4548 4676 file.exe 80 PID 4676 wrote to memory of 4548 4676 file.exe 80 PID 4676 wrote to memory of 4548 4676 file.exe 80 PID 4676 wrote to memory of 4548 4676 file.exe 80 PID 4676 wrote to memory of 4548 4676 file.exe 80 PID 4676 wrote to memory of 4548 4676 file.exe 80 PID 4676 wrote to memory of 4548 4676 file.exe 80 PID 4676 wrote to memory of 4548 4676 file.exe 80 PID 4676 wrote to memory of 4548 4676 file.exe 80 PID 4548 wrote to memory of 3144 4548 file.exe 87 PID 4548 wrote to memory of 3144 4548 file.exe 87 PID 4548 wrote to memory of 3144 4548 file.exe 87 PID 4548 wrote to memory of 624 4548 file.exe 88 PID 4548 wrote to memory of 624 4548 file.exe 88 PID 4548 wrote to memory of 624 4548 file.exe 88 PID 624 wrote to memory of 4728 624 file.exe 90 PID 624 wrote to memory of 4728 624 file.exe 90 PID 624 wrote to memory of 4728 624 file.exe 90 PID 624 wrote to memory of 4728 624 file.exe 90 PID 624 wrote to memory of 4728 624 file.exe 90 PID 624 wrote to memory of 4728 624 file.exe 90 PID 624 wrote to memory of 4728 624 file.exe 90 PID 624 wrote to memory of 4728 624 file.exe 90 PID 624 wrote to memory of 4728 624 file.exe 90 PID 624 wrote to memory of 4728 624 file.exe 90 PID 4728 wrote to memory of 4828 4728 file.exe 92 PID 4728 wrote to memory of 4828 4728 file.exe 92 PID 4728 wrote to memory of 4828 4728 file.exe 92 PID 4728 wrote to memory of 4724 4728 file.exe 93 PID 4728 wrote to memory of 4724 4728 file.exe 93 PID 4728 wrote to memory of 4724 4728 file.exe 93 PID 4724 wrote to memory of 1836 4724 build3.exe 94 PID 4724 wrote to memory of 1836 4724 build3.exe 94 PID 4724 wrote to memory of 1836 4724 build3.exe 94 PID 4828 wrote to memory of 2488 4828 build2.exe 96 PID 4828 wrote to memory of 2488 4828 build2.exe 96 PID 4828 wrote to memory of 2488 4828 build2.exe 96 PID 4828 wrote to memory of 2488 4828 build2.exe 96 PID 4828 wrote to memory of 2488 4828 build2.exe 96 PID 4828 wrote to memory of 2488 4828 build2.exe 96 PID 4828 wrote to memory of 2488 4828 build2.exe 96 PID 4828 wrote to memory of 2488 4828 build2.exe 96 PID 4828 wrote to memory of 2488 4828 build2.exe 96 PID 4092 wrote to memory of 2396 4092 mstsca.exe 98 PID 4092 wrote to memory of 2396 4092 mstsca.exe 98 PID 4092 wrote to memory of 2396 4092 mstsca.exe 98 PID 2488 wrote to memory of 3584 2488 build2.exe 100 PID 2488 wrote to memory of 3584 2488 build2.exe 100 PID 2488 wrote to memory of 3584 2488 build2.exe 100 PID 3584 wrote to memory of 4424 3584 cmd.exe 102 PID 3584 wrote to memory of 4424 3584 cmd.exe 102 PID 3584 wrote to memory of 4424 3584 cmd.exe 102 PID 3584 wrote to memory of 2304 3584 cmd.exe 103 PID 3584 wrote to memory of 2304 3584 cmd.exe 103 PID 3584 wrote to memory of 2304 3584 cmd.exe 103
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4676 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4548 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\2326b1d3-9fd3-4fad-8608-756e19192e9b" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3144
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:624 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4728 -
C:\Users\Admin\AppData\Local\aa9b0075-dbef-4d67-8538-044ae4094ace\build2.exe"C:\Users\Admin\AppData\Local\aa9b0075-dbef-4d67-8538-044ae4094ace\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4828 -
C:\Users\Admin\AppData\Local\aa9b0075-dbef-4d67-8538-044ae4094ace\build2.exe"C:\Users\Admin\AppData\Local\aa9b0075-dbef-4d67-8538-044ae4094ace\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:2488 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" S/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\aa9b0075-dbef-4d67-8538-044ae4094ace\build2.exe" & del C:\PrograData\*.dll & exit7⤵
- Suspicious use of WriteProcessMemory
PID:3584 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im build2.exe /f8⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4424
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C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
PID:2304
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C:\Users\Admin\AppData\Local\aa9b0075-dbef-4d67-8538-044ae4094ace\build3.exe"C:\Users\Admin\AppData\Local\aa9b0075-dbef-4d67-8538-044ae4094ace\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4724 -
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:1836
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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:4092 -
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:2396
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
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
846KB
MD5b82e3da9b68a969622a59c6536ce1251
SHA1790c1f1497d356951eb32eeae1c2acdcee768c36
SHA2569f3b9459fbc0b2d77e67a2c4c132125f07f2109a7e56bbf3e3b0d02c8a1e8b55
SHA512efa8f689df57b816bdbc723c69d8cd24947c9577cefff0305b6a61b9a618099299954264ba304fd7a403c23e53c3fa71da84209bb640f58fe746cd0c30696c05
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Filesize
418KB
MD5bc47d3a0d4a74adc40b3a7035344becb
SHA1dd80bbe70106b62ea58924173a364cc936a0b1f4
SHA25606d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169
SHA5124a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4
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Filesize
418KB
MD5bc47d3a0d4a74adc40b3a7035344becb
SHA1dd80bbe70106b62ea58924173a364cc936a0b1f4
SHA25606d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169
SHA5124a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4
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Filesize
418KB
MD5bc47d3a0d4a74adc40b3a7035344becb
SHA1dd80bbe70106b62ea58924173a364cc936a0b1f4
SHA25606d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169
SHA5124a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4
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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