Analysis
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max time kernel
63s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
28/09/2022, 03:01
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
847KB
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MD5
22adb2a2587a8eb65164312008085d2a
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SHA1
3046ae0a0f10403c4195d1aa8f543d7c2495e825
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SHA256
5ab8d32927203def3d2ceebbed3917262444235b9750e1ca6d73b0649ce1207f
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SHA512
8877692b313acf2fa5e8c1f784dd63fd0ea389aa2624c5b028823371ec90864b10cf0db82d5ff2fce740e2728dd2248bd2cac3fff82ae2e108da0fbd846c5fde
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SSDEEP
24576:avYgFm8jQbshYeSc45K/Pe2n1QmsjKWaDi:avY+jssWeSct/22nqmsjKWa
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 10 IoCs
resource yara_rule behavioral2/memory/5088-133-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3496-136-0x0000000002270000-0x000000000238B000-memory.dmp family_djvu behavioral2/memory/5088-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5088-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5088-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5088-142-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4656-145-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4656-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4656-152-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4656-188-0x0000000000400000-0x0000000000537000-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 3892 build2.exe 1368 build3.exe 3732 build2.exe 688 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 3732 build2.exe 3732 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 4700 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\\d1ec3fad-463b-494b-b5ad-8f9b54391cbf\\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 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 13 api.2ip.ua 14 api.2ip.ua 24 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 3496 set thread context of 5088 3496 file.exe 83 PID 4688 set thread context of 4656 4688 file.exe 90 PID 3892 set thread context of 3732 3892 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 3524 schtasks.exe 5064 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 2928 timeout.exe -
Kills process with taskkill 1 IoCs
pid Process 3504 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 5088 file.exe 5088 file.exe 4656 file.exe 4656 file.exe 3732 build2.exe 3732 build2.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3504 taskkill.exe -
Suspicious use of WriteProcessMemory 56 IoCs
description pid Process procid_target PID 3496 wrote to memory of 5088 3496 file.exe 83 PID 3496 wrote to memory of 5088 3496 file.exe 83 PID 3496 wrote to memory of 5088 3496 file.exe 83 PID 3496 wrote to memory of 5088 3496 file.exe 83 PID 3496 wrote to memory of 5088 3496 file.exe 83 PID 3496 wrote to memory of 5088 3496 file.exe 83 PID 3496 wrote to memory of 5088 3496 file.exe 83 PID 3496 wrote to memory of 5088 3496 file.exe 83 PID 3496 wrote to memory of 5088 3496 file.exe 83 PID 3496 wrote to memory of 5088 3496 file.exe 83 PID 5088 wrote to memory of 4700 5088 file.exe 85 PID 5088 wrote to memory of 4700 5088 file.exe 85 PID 5088 wrote to memory of 4700 5088 file.exe 85 PID 5088 wrote to memory of 4688 5088 file.exe 86 PID 5088 wrote to memory of 4688 5088 file.exe 86 PID 5088 wrote to memory of 4688 5088 file.exe 86 PID 4688 wrote to memory of 4656 4688 file.exe 90 PID 4688 wrote to memory of 4656 4688 file.exe 90 PID 4688 wrote to memory of 4656 4688 file.exe 90 PID 4688 wrote to memory of 4656 4688 file.exe 90 PID 4688 wrote to memory of 4656 4688 file.exe 90 PID 4688 wrote to memory of 4656 4688 file.exe 90 PID 4688 wrote to memory of 4656 4688 file.exe 90 PID 4688 wrote to memory of 4656 4688 file.exe 90 PID 4688 wrote to memory of 4656 4688 file.exe 90 PID 4688 wrote to memory of 4656 4688 file.exe 90 PID 4656 wrote to memory of 3892 4656 file.exe 91 PID 4656 wrote to memory of 3892 4656 file.exe 91 PID 4656 wrote to memory of 3892 4656 file.exe 91 PID 4656 wrote to memory of 1368 4656 file.exe 92 PID 4656 wrote to memory of 1368 4656 file.exe 92 PID 4656 wrote to memory of 1368 4656 file.exe 92 PID 1368 wrote to memory of 3524 1368 build3.exe 93 PID 1368 wrote to memory of 3524 1368 build3.exe 93 PID 1368 wrote to memory of 3524 1368 build3.exe 93 PID 3892 wrote to memory of 3732 3892 build2.exe 95 PID 3892 wrote to memory of 3732 3892 build2.exe 95 PID 3892 wrote to memory of 3732 3892 build2.exe 95 PID 3892 wrote to memory of 3732 3892 build2.exe 95 PID 3892 wrote to memory of 3732 3892 build2.exe 95 PID 3892 wrote to memory of 3732 3892 build2.exe 95 PID 3892 wrote to memory of 3732 3892 build2.exe 95 PID 3892 wrote to memory of 3732 3892 build2.exe 95 PID 3892 wrote to memory of 3732 3892 build2.exe 95 PID 3732 wrote to memory of 4796 3732 build2.exe 96 PID 3732 wrote to memory of 4796 3732 build2.exe 96 PID 3732 wrote to memory of 4796 3732 build2.exe 96 PID 4796 wrote to memory of 3504 4796 cmd.exe 98 PID 4796 wrote to memory of 3504 4796 cmd.exe 98 PID 4796 wrote to memory of 3504 4796 cmd.exe 98 PID 4796 wrote to memory of 2928 4796 cmd.exe 99 PID 4796 wrote to memory of 2928 4796 cmd.exe 99 PID 4796 wrote to memory of 2928 4796 cmd.exe 99 PID 688 wrote to memory of 5064 688 mstsca.exe 102 PID 688 wrote to memory of 5064 688 mstsca.exe 102 PID 688 wrote to memory of 5064 688 mstsca.exe 102
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:3496 -
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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5088 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\d1ec3fad-463b-494b-b5ad-8f9b54391cbf" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4700
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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:4688 -
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:4656 -
C:\Users\Admin\AppData\Local\0fb8361a-41c9-412f-a7cf-aae674acda85\build2.exe"C:\Users\Admin\AppData\Local\0fb8361a-41c9-412f-a7cf-aae674acda85\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3892 -
C:\Users\Admin\AppData\Local\0fb8361a-41c9-412f-a7cf-aae674acda85\build2.exe"C:\Users\Admin\AppData\Local\0fb8361a-41c9-412f-a7cf-aae674acda85\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:3732 -
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\0fb8361a-41c9-412f-a7cf-aae674acda85\build2.exe" & del C:\PrograData\*.dll & exit7⤵
- Suspicious use of WriteProcessMemory
PID:4796 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im build2.exe /f8⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3504
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C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
PID:2928
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C:\Users\Admin\AppData\Local\0fb8361a-41c9-412f-a7cf-aae674acda85\build3.exe"C:\Users\Admin\AppData\Local\0fb8361a-41c9-412f-a7cf-aae674acda85\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1368 -
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:3524
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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:688 -
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:5064
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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\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize2KB
MD53229b6929fc9caec79e3e5ad740250c6
SHA1d677cb89c767b4c4a444fedfa53dd6c8aa1d7d6e
SHA256ece826b5b4484d173ea804773ca9a13c7248d2f6f3c8a7efeea2a9e3691d7628
SHA51279b5ab3c41f03f913c0c947c6b6c66f396af97f7f69b3df72622beb9fddf8c6cc1a4f830d3edbd91ec570ce59531f09db54e51a2694a8b330ded69fd932036d1
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize1KB
MD5edcd4c783b2b2c906602519bd8f697f4
SHA1fc56fded4065d6960c6507cac4264dfd2b038004
SHA256367e0ac4e24f1d1530de05a6abf81d6b572c0546b5aa134c246fa1514582fd90
SHA512cb23a82c06211121e39ed0dbec5928b1a85aca7c25f2c060d609350e3a94bf82e9159a2a4d5e67295fc29bac22c95d525ea2461a0000d24c6c4cb630520f68d0
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize488B
MD5cc3d2aa273e81b45e24fdc088d7660ea
SHA1dcadb57162376af655cc003a9a2a55bea3f05df8
SHA256262aa1c19b63a1f9137f9c4cb664e0798ce3f696f34b9f5fbef7e114dca86193
SHA51253d8d3507d2a3d67356c3c33a182c2d1f535fdb8508b594e9dfe46c43bfd24fce99c3f9b7cef23d3bb1f92f9aa8881ad1b45f4ac66f57a1fc7ebc986d6d8961c
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize482B
MD5151a879269327859b036d02e62a3dd24
SHA1c8218e8015e5eae5b8b69513449a41d5b3dc28e6
SHA256c366c7ba82c79b3e5817fb835ee7386b2a303fc1e9099fadd45875401f8ed7ff
SHA51239e35f05511429e33659f9058440d2dd5e87cdd1b6bc2ed8e190b080b9d78b8106b19c579e86d6c486002ac2cd55f2acfccf23acaae1541a8cc4a910202c0d91
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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
847KB
MD522adb2a2587a8eb65164312008085d2a
SHA13046ae0a0f10403c4195d1aa8f543d7c2495e825
SHA2565ab8d32927203def3d2ceebbed3917262444235b9750e1ca6d73b0649ce1207f
SHA5128877692b313acf2fa5e8c1f784dd63fd0ea389aa2624c5b028823371ec90864b10cf0db82d5ff2fce740e2728dd2248bd2cac3fff82ae2e108da0fbd846c5fde
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a