Analysis
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max time kernel
145s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
16/09/2022, 12:15
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
General
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Target
file.exe
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Size
786KB
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MD5
247473e7beb01a66d28e0684522367ec
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SHA1
d6025dbe65f14467a7e57720e0831e2ce66e1c07
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SHA256
102dd0efbf781cffcc347d8faba62abac6f2720e8b58ef98032a43c5f68c99c0
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SHA512
b40b9222406929cef67d1bbadcedd5c90bba96d1f3759133269b6e2d2f5fc8072eeb8bd6d4edb35e714125188ef8e3366aeb8ba47006ed7271f631eb16a778d2
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SSDEEP
24576:jCZ37uDdFnwuvrdKLtUNC87V/ny3ed5EzLi:jlrwuvrdnNr1nyME
Malware Config
Extracted
djvu
http://acacaca.org/test3/get.php
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extension
.eemv
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offline_id
5IVlpkccZlJz0AZ5atgGWVKe9CGAnXjohDf40mt1
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payload_url
http://rgyui.top/dl/build2.exe
http://acacaca.org/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 11 IoCs
resource yara_rule behavioral2/memory/624-133-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/624-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4040-137-0x0000000002370000-0x000000000248B000-memory.dmp family_djvu behavioral2/memory/624-136-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/624-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/624-142-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1908-145-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1908-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1908-148-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4040-160-0x0000000002370000-0x000000000248B000-memory.dmp family_djvu behavioral2/memory/1908-161-0x0000000000400000-0x0000000000537000-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 3036 build2.exe 2868 build3.exe 4068 mstsca.exe 3920 build2.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation build2.exe Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation file.exe -
Loads dropped DLL 2 IoCs
pid Process 3920 build2.exe 3920 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1376 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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\1c8831ec-4215-48d2-a02e-a2c317a89197\\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 20 api.2ip.ua 6 api.2ip.ua 7 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4040 set thread context of 624 4040 file.exe 79 PID 4968 set thread context of 1908 4968 file.exe 86 PID 3036 set thread context of 3920 3036 build2.exe 98 -
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 1316 schtasks.exe 4804 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 3576 timeout.exe -
Kills process with taskkill 1 IoCs
pid Process 4908 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 624 file.exe 624 file.exe 1908 file.exe 1908 file.exe 3920 build2.exe 3920 build2.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4908 taskkill.exe -
Suspicious use of WriteProcessMemory 56 IoCs
description pid Process procid_target PID 4040 wrote to memory of 624 4040 file.exe 79 PID 4040 wrote to memory of 624 4040 file.exe 79 PID 4040 wrote to memory of 624 4040 file.exe 79 PID 4040 wrote to memory of 624 4040 file.exe 79 PID 4040 wrote to memory of 624 4040 file.exe 79 PID 4040 wrote to memory of 624 4040 file.exe 79 PID 4040 wrote to memory of 624 4040 file.exe 79 PID 4040 wrote to memory of 624 4040 file.exe 79 PID 4040 wrote to memory of 624 4040 file.exe 79 PID 4040 wrote to memory of 624 4040 file.exe 79 PID 624 wrote to memory of 1376 624 file.exe 80 PID 624 wrote to memory of 1376 624 file.exe 80 PID 624 wrote to memory of 1376 624 file.exe 80 PID 624 wrote to memory of 4968 624 file.exe 81 PID 624 wrote to memory of 4968 624 file.exe 81 PID 624 wrote to memory of 4968 624 file.exe 81 PID 4968 wrote to memory of 1908 4968 file.exe 86 PID 4968 wrote to memory of 1908 4968 file.exe 86 PID 4968 wrote to memory of 1908 4968 file.exe 86 PID 4968 wrote to memory of 1908 4968 file.exe 86 PID 4968 wrote to memory of 1908 4968 file.exe 86 PID 4968 wrote to memory of 1908 4968 file.exe 86 PID 4968 wrote to memory of 1908 4968 file.exe 86 PID 4968 wrote to memory of 1908 4968 file.exe 86 PID 4968 wrote to memory of 1908 4968 file.exe 86 PID 4968 wrote to memory of 1908 4968 file.exe 86 PID 1908 wrote to memory of 3036 1908 file.exe 87 PID 1908 wrote to memory of 3036 1908 file.exe 87 PID 1908 wrote to memory of 3036 1908 file.exe 87 PID 1908 wrote to memory of 2868 1908 file.exe 89 PID 1908 wrote to memory of 2868 1908 file.exe 89 PID 1908 wrote to memory of 2868 1908 file.exe 89 PID 2868 wrote to memory of 1316 2868 build3.exe 90 PID 2868 wrote to memory of 1316 2868 build3.exe 90 PID 2868 wrote to memory of 1316 2868 build3.exe 90 PID 4068 wrote to memory of 4804 4068 mstsca.exe 96 PID 4068 wrote to memory of 4804 4068 mstsca.exe 96 PID 4068 wrote to memory of 4804 4068 mstsca.exe 96 PID 3036 wrote to memory of 3920 3036 build2.exe 98 PID 3036 wrote to memory of 3920 3036 build2.exe 98 PID 3036 wrote to memory of 3920 3036 build2.exe 98 PID 3036 wrote to memory of 3920 3036 build2.exe 98 PID 3036 wrote to memory of 3920 3036 build2.exe 98 PID 3036 wrote to memory of 3920 3036 build2.exe 98 PID 3036 wrote to memory of 3920 3036 build2.exe 98 PID 3036 wrote to memory of 3920 3036 build2.exe 98 PID 3036 wrote to memory of 3920 3036 build2.exe 98 PID 3920 wrote to memory of 2108 3920 build2.exe 99 PID 3920 wrote to memory of 2108 3920 build2.exe 99 PID 3920 wrote to memory of 2108 3920 build2.exe 99 PID 2108 wrote to memory of 4908 2108 cmd.exe 101 PID 2108 wrote to memory of 4908 2108 cmd.exe 101 PID 2108 wrote to memory of 4908 2108 cmd.exe 101 PID 2108 wrote to memory of 3576 2108 cmd.exe 103 PID 2108 wrote to memory of 3576 2108 cmd.exe 103 PID 2108 wrote to memory of 3576 2108 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:4040 -
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:624 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\1c8831ec-4215-48d2-a02e-a2c317a89197" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1376
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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:4968 -
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:1908 -
C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build2.exe"C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3036 -
C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build2.exe"C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\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:3920 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" @Au/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build2.exe" & del C:\PrograData\*.dll & exit7⤵
- Suspicious use of WriteProcessMemory
PID:2108 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im build2.exe /f8⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4908
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C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
PID:3576
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C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build3.exe"C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2868 -
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:1316
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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:4068 -
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:4804
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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
MD5ea3ead1b160922fb25b1b9d766a56fa5
SHA19f61cb0a5a80fa5ba776f71fed4728d002d3aca1
SHA2564080213fba647d43c0ac02710ac7b631c23f8f791930016045cda9aeec1b6867
SHA512ec817bdc668bff4c266ca8b6a6c4068251926714262a95f9ac7f7565e2d66a26371589182d0ba1d03fa482d99430b865cb7eb24becf92b72e45f20b26a215c15
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize1KB
MD5e9e482bf825221326b7c080ef52e5036
SHA167244c170dad567630298f89364a5e9626e2517a
SHA25660843d5086f10e833ca98696967f1a39ea04a2ffee6d87679b5803092b9cfa71
SHA512c7a5fd63c0faa2a5cd8be90c7dcf10d8dd564964dc4b8ab4fa1a7a188fa89094563f595c94f4ea133582cfbcf9cc90cb74bd273924b7fa5eadae868bced51440
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize488B
MD50f3771062cc18e8a8fbce416b96ff68f
SHA1ba16dcc8a8867bc9a23f3439e0d928dca1c00fa4
SHA2562824d3fc15dfcbeaa469a9a83a9e3d8a873de55750fbb608631a26e1417be229
SHA5127b6bb293f2aa7b0cac6a65eb6d26c3b1940b1da80e5e0c63980bde660b59c474f7fb17379eda47708e0d92b466d42e38647bd36e39247ae5ee7ad9756c8111f7
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize482B
MD5823915fdb21ecf1f2a8da28cb1dd80f6
SHA11d498b24de02ad26f4fb7c0f479a661d03f5fb10
SHA25660ce9d0d3f0b74db51e9a5def0868419ae3964d7b50647fe0d5426362eca57cd
SHA5120a5a765d219d744e7774604fbc754adef387ee1b223b3d43e1a3ed93c63866dd14245e1bd7e0fb7da60d396a30ace4c39981e250d72d29008cc236366fc63e86
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Filesize
786KB
MD5247473e7beb01a66d28e0684522367ec
SHA1d6025dbe65f14467a7e57720e0831e2ce66e1c07
SHA256102dd0efbf781cffcc347d8faba62abac6f2720e8b58ef98032a43c5f68c99c0
SHA512b40b9222406929cef67d1bbadcedd5c90bba96d1f3759133269b6e2d2f5fc8072eeb8bd6d4edb35e714125188ef8e3366aeb8ba47006ed7271f631eb16a778d2
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Filesize
376KB
MD58b01bb02b7aeb097ba96dc7628575ca0
SHA111046fb024f695b1dc7a3a0be9167cb4e85548c6
SHA2567abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a
SHA51264cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35
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Filesize
376KB
MD58b01bb02b7aeb097ba96dc7628575ca0
SHA111046fb024f695b1dc7a3a0be9167cb4e85548c6
SHA2567abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a
SHA51264cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35
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Filesize
376KB
MD58b01bb02b7aeb097ba96dc7628575ca0
SHA111046fb024f695b1dc7a3a0be9167cb4e85548c6
SHA2567abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a
SHA51264cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35
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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