Analysis
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max time kernel
193s -
max time network
204s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
20/10/2022, 16:01
Static task
static1
Behavioral task
behavioral1
Sample
0284ef0c5e906d8c6f03393d9cd82e63.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
0284ef0c5e906d8c6f03393d9cd82e63.exe
Resource
win10v2004-20220812-en
General
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Target
0284ef0c5e906d8c6f03393d9cd82e63.exe
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Size
713KB
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MD5
0284ef0c5e906d8c6f03393d9cd82e63
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SHA1
df461c8ad24f1b90f6c711a9a3a58c4228b4a9d8
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SHA256
ec9d5791f02cc5b005e9bb3619092d1645c8c29b50a34ed23381c3514cf512bf
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SHA512
fa2550870fc9155c1b39078c4faeb94dc24758fcc9640f45c5ed864269ff8aa3b3b081e3f055766ca7378372c456d81bfa2a922618e0bee4f5657a5b7fe4e6ce
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SSDEEP
12288:QqxawfhDmjpg7CeeRa2METczyqsxREcPqSjPrO1iosNURIlWOZBnS:Q1ydtCeeA2ZDqMBP9oR+l7ZBn
Malware Config
Extracted
djvu
http://winnlinne.com/test1/get.php
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extension
.tuis
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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
55.1
517
https://t.me/tg_privatetalk
https://nerdculture.de/@yixehi33
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profile_id
517
Signatures
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Detected Djvu ransomware 9 IoCs
resource yara_rule behavioral2/memory/4436-133-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4436-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4932-136-0x00000000023B0000-0x00000000024CB000-memory.dmp family_djvu behavioral2/memory/4436-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4436-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4436-142-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3020-145-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3020-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3020-149-0x0000000000400000-0x0000000000537000-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 484 build2.exe 744 build2.exe 3784 build3.exe 3736 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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 0284ef0c5e906d8c6f03393d9cd82e63.exe Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 0284ef0c5e906d8c6f03393d9cd82e63.exe -
Loads dropped DLL 3 IoCs
pid Process 744 build2.exe 744 build2.exe 744 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1608 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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0e023b19-66a8-42a2-a04f-3137ec23cc7d\\0284ef0c5e906d8c6f03393d9cd82e63.exe\" --AutoStart" 0284ef0c5e906d8c6f03393d9cd82e63.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 21 api.2ip.ua 38 api.2ip.ua 20 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4932 set thread context of 4436 4932 0284ef0c5e906d8c6f03393d9cd82e63.exe 80 PID 3700 set thread context of 3020 3700 0284ef0c5e906d8c6f03393d9cd82e63.exe 84 PID 484 set thread context of 744 484 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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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 4856 schtasks.exe 4828 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4436 0284ef0c5e906d8c6f03393d9cd82e63.exe 4436 0284ef0c5e906d8c6f03393d9cd82e63.exe 3020 0284ef0c5e906d8c6f03393d9cd82e63.exe 3020 0284ef0c5e906d8c6f03393d9cd82e63.exe 744 build2.exe 744 build2.exe -
Suspicious use of WriteProcessMemory 46 IoCs
description pid Process procid_target PID 4932 wrote to memory of 4436 4932 0284ef0c5e906d8c6f03393d9cd82e63.exe 80 PID 4932 wrote to memory of 4436 4932 0284ef0c5e906d8c6f03393d9cd82e63.exe 80 PID 4932 wrote to memory of 4436 4932 0284ef0c5e906d8c6f03393d9cd82e63.exe 80 PID 4932 wrote to memory of 4436 4932 0284ef0c5e906d8c6f03393d9cd82e63.exe 80 PID 4932 wrote to memory of 4436 4932 0284ef0c5e906d8c6f03393d9cd82e63.exe 80 PID 4932 wrote to memory of 4436 4932 0284ef0c5e906d8c6f03393d9cd82e63.exe 80 PID 4932 wrote to memory of 4436 4932 0284ef0c5e906d8c6f03393d9cd82e63.exe 80 PID 4932 wrote to memory of 4436 4932 0284ef0c5e906d8c6f03393d9cd82e63.exe 80 PID 4932 wrote to memory of 4436 4932 0284ef0c5e906d8c6f03393d9cd82e63.exe 80 PID 4932 wrote to memory of 4436 4932 0284ef0c5e906d8c6f03393d9cd82e63.exe 80 PID 4436 wrote to memory of 1608 4436 0284ef0c5e906d8c6f03393d9cd82e63.exe 81 PID 4436 wrote to memory of 1608 4436 0284ef0c5e906d8c6f03393d9cd82e63.exe 81 PID 4436 wrote to memory of 1608 4436 0284ef0c5e906d8c6f03393d9cd82e63.exe 81 PID 4436 wrote to memory of 3700 4436 0284ef0c5e906d8c6f03393d9cd82e63.exe 82 PID 4436 wrote to memory of 3700 4436 0284ef0c5e906d8c6f03393d9cd82e63.exe 82 PID 4436 wrote to memory of 3700 4436 0284ef0c5e906d8c6f03393d9cd82e63.exe 82 PID 3700 wrote to memory of 3020 3700 0284ef0c5e906d8c6f03393d9cd82e63.exe 84 PID 3700 wrote to memory of 3020 3700 0284ef0c5e906d8c6f03393d9cd82e63.exe 84 PID 3700 wrote to memory of 3020 3700 0284ef0c5e906d8c6f03393d9cd82e63.exe 84 PID 3700 wrote to memory of 3020 3700 0284ef0c5e906d8c6f03393d9cd82e63.exe 84 PID 3700 wrote to memory of 3020 3700 0284ef0c5e906d8c6f03393d9cd82e63.exe 84 PID 3700 wrote to memory of 3020 3700 0284ef0c5e906d8c6f03393d9cd82e63.exe 84 PID 3700 wrote to memory of 3020 3700 0284ef0c5e906d8c6f03393d9cd82e63.exe 84 PID 3700 wrote to memory of 3020 3700 0284ef0c5e906d8c6f03393d9cd82e63.exe 84 PID 3700 wrote to memory of 3020 3700 0284ef0c5e906d8c6f03393d9cd82e63.exe 84 PID 3700 wrote to memory of 3020 3700 0284ef0c5e906d8c6f03393d9cd82e63.exe 84 PID 3020 wrote to memory of 484 3020 0284ef0c5e906d8c6f03393d9cd82e63.exe 88 PID 3020 wrote to memory of 484 3020 0284ef0c5e906d8c6f03393d9cd82e63.exe 88 PID 3020 wrote to memory of 484 3020 0284ef0c5e906d8c6f03393d9cd82e63.exe 88 PID 484 wrote to memory of 744 484 build2.exe 89 PID 484 wrote to memory of 744 484 build2.exe 89 PID 484 wrote to memory of 744 484 build2.exe 89 PID 484 wrote to memory of 744 484 build2.exe 89 PID 484 wrote to memory of 744 484 build2.exe 89 PID 484 wrote to memory of 744 484 build2.exe 89 PID 484 wrote to memory of 744 484 build2.exe 89 PID 484 wrote to memory of 744 484 build2.exe 89 PID 3020 wrote to memory of 3784 3020 0284ef0c5e906d8c6f03393d9cd82e63.exe 91 PID 3020 wrote to memory of 3784 3020 0284ef0c5e906d8c6f03393d9cd82e63.exe 91 PID 3020 wrote to memory of 3784 3020 0284ef0c5e906d8c6f03393d9cd82e63.exe 91 PID 3784 wrote to memory of 4856 3784 build3.exe 92 PID 3784 wrote to memory of 4856 3784 build3.exe 92 PID 3784 wrote to memory of 4856 3784 build3.exe 92 PID 3736 wrote to memory of 4828 3736 mstsca.exe 97 PID 3736 wrote to memory of 4828 3736 mstsca.exe 97 PID 3736 wrote to memory of 4828 3736 mstsca.exe 97
Processes
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C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe"C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4932 -
C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe"C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4436 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\0e023b19-66a8-42a2-a04f-3137ec23cc7d" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1608
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C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe"C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3700 -
C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe"C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3020 -
C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build2.exe"C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:484 -
C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build2.exe"C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:744
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C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build3.exe"C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3784 -
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:4856
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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:3736 -
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:4828
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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
1.1MB
MD51f44d4d3087c2b202cf9c90ee9d04b0f
SHA1106a3ebc9e39ab6ddb3ff987efb6527c956f192d
SHA2564841020c8bd06b08fde6e44cbe2e2ab33439e1c8368e936ec5b00dc0584f7260
SHA512b614c72a3c1ce681ebffa628e29aa50275cc80ca9267380960c5198ea4d0a3f2df6cfb7275491d220bad72f14fc94e6656501e9a061d102fb11e00cfda2beb45
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C:\Users\Admin\AppData\Local\0e023b19-66a8-42a2-a04f-3137ec23cc7d\0284ef0c5e906d8c6f03393d9cd82e63.exe
Filesize713KB
MD50284ef0c5e906d8c6f03393d9cd82e63
SHA1df461c8ad24f1b90f6c711a9a3a58c4228b4a9d8
SHA256ec9d5791f02cc5b005e9bb3619092d1645c8c29b50a34ed23381c3514cf512bf
SHA512fa2550870fc9155c1b39078c4faeb94dc24758fcc9640f45c5ed864269ff8aa3b3b081e3f055766ca7378372c456d81bfa2a922618e0bee4f5657a5b7fe4e6ce
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Filesize
325KB
MD5e4e90e1dda4b51d199d449fa936db902
SHA170de6b213f872ba782ba11cad5a5d1294ca9e741
SHA2568ecc0426ea37a5c9e59d00b4fde1508175a950372ec3870965f1e527634b3419
SHA5123958e1c40d69d5439b5e85bdb5765bb38ec5bba24f38a8aafb9a53c167ebaffb5c202441613af3f2d968c9c902de35036f67d87f7777efeb4c66869a7fc3c4ed
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Filesize
325KB
MD5e4e90e1dda4b51d199d449fa936db902
SHA170de6b213f872ba782ba11cad5a5d1294ca9e741
SHA2568ecc0426ea37a5c9e59d00b4fde1508175a950372ec3870965f1e527634b3419
SHA5123958e1c40d69d5439b5e85bdb5765bb38ec5bba24f38a8aafb9a53c167ebaffb5c202441613af3f2d968c9c902de35036f67d87f7777efeb4c66869a7fc3c4ed
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Filesize
325KB
MD5e4e90e1dda4b51d199d449fa936db902
SHA170de6b213f872ba782ba11cad5a5d1294ca9e741
SHA2568ecc0426ea37a5c9e59d00b4fde1508175a950372ec3870965f1e527634b3419
SHA5123958e1c40d69d5439b5e85bdb5765bb38ec5bba24f38a8aafb9a53c167ebaffb5c202441613af3f2d968c9c902de35036f67d87f7777efeb4c66869a7fc3c4ed
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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