Analysis
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max time kernel
91s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
04-11-2022 10:56
Static task
static1
Behavioral task
behavioral1
Sample
242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe
Resource
win10v2004-20220812-en
General
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Target
242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe
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Size
789KB
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MD5
2edfe3bc031c5cc9cc5bdf18aa7c3a02
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SHA1
b557b50822a2d788b410ead1e005197a0a4130d7
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SHA256
242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf
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SHA512
ef5e6255424a2fc58a0a8ffc44021b6d7c6f0e5f72644758d978ebeee0ebd3dff11e2b379cefa47573225f095a9225ce1c4e9b5d6cb79e79c534a9bcda9d690f
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SSDEEP
12288:rpZFyOlgXSpOFtqmtubiMwmE14D8wREaupmiMWqrItCDyMOqPjw:ly6gXfFtHYiMnE1CREaYmHWTrv
Malware Config
Extracted
djvu
http://fresherlights.com/test1/get.php
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extension
.bowd
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offline_id
oHp5e4SJxdFtxfvKYmeX06F4C5cn0EcsF5Ak9Wt1
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payload_url
http://uaery.top/dl/build2.exe
http://fresherlights.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 9 IoCs
resource yara_rule behavioral1/memory/1952-133-0x0000000004A70000-0x0000000004B8B000-memory.dmp family_djvu behavioral1/memory/4560-135-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4560-136-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4560-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4560-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4560-142-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4984-145-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4984-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4984-152-0x0000000000400000-0x0000000000537000-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 2 IoCs
pid Process 4576 build2.exe 1388 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 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation build2.exe -
Loads dropped DLL 3 IoCs
pid Process 1388 build2.exe 1388 build2.exe 1388 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1976 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\\807e857b-8d5b-47d2-a00c-bbddc86d014f\\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe\" --AutoStart" 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.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 26 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1952 set thread context of 4560 1952 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 77 PID 2084 set thread context of 4984 2084 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 81 PID 4576 set thread context of 1388 4576 build2.exe 87 -
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 -
Delays execution with timeout.exe 1 IoCs
pid Process 1688 timeout.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4560 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 4560 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 4984 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 4984 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 1388 build2.exe 1388 build2.exe -
Suspicious use of WriteProcessMemory 44 IoCs
description pid Process procid_target PID 1952 wrote to memory of 4560 1952 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 77 PID 1952 wrote to memory of 4560 1952 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 77 PID 1952 wrote to memory of 4560 1952 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 77 PID 1952 wrote to memory of 4560 1952 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 77 PID 1952 wrote to memory of 4560 1952 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 77 PID 1952 wrote to memory of 4560 1952 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 77 PID 1952 wrote to memory of 4560 1952 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 77 PID 1952 wrote to memory of 4560 1952 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 77 PID 1952 wrote to memory of 4560 1952 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 77 PID 1952 wrote to memory of 4560 1952 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 77 PID 4560 wrote to memory of 1976 4560 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 78 PID 4560 wrote to memory of 1976 4560 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 78 PID 4560 wrote to memory of 1976 4560 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 78 PID 4560 wrote to memory of 2084 4560 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 79 PID 4560 wrote to memory of 2084 4560 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 79 PID 4560 wrote to memory of 2084 4560 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 79 PID 2084 wrote to memory of 4984 2084 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 81 PID 2084 wrote to memory of 4984 2084 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 81 PID 2084 wrote to memory of 4984 2084 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 81 PID 2084 wrote to memory of 4984 2084 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 81 PID 2084 wrote to memory of 4984 2084 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 81 PID 2084 wrote to memory of 4984 2084 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 81 PID 2084 wrote to memory of 4984 2084 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 81 PID 2084 wrote to memory of 4984 2084 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 81 PID 2084 wrote to memory of 4984 2084 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 81 PID 2084 wrote to memory of 4984 2084 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 81 PID 4984 wrote to memory of 4576 4984 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 86 PID 4984 wrote to memory of 4576 4984 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 86 PID 4984 wrote to memory of 4576 4984 242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe 86 PID 4576 wrote to memory of 1388 4576 build2.exe 87 PID 4576 wrote to memory of 1388 4576 build2.exe 87 PID 4576 wrote to memory of 1388 4576 build2.exe 87 PID 4576 wrote to memory of 1388 4576 build2.exe 87 PID 4576 wrote to memory of 1388 4576 build2.exe 87 PID 4576 wrote to memory of 1388 4576 build2.exe 87 PID 4576 wrote to memory of 1388 4576 build2.exe 87 PID 4576 wrote to memory of 1388 4576 build2.exe 87 PID 4576 wrote to memory of 1388 4576 build2.exe 87 PID 1388 wrote to memory of 1472 1388 build2.exe 92 PID 1388 wrote to memory of 1472 1388 build2.exe 92 PID 1388 wrote to memory of 1472 1388 build2.exe 92 PID 1472 wrote to memory of 1688 1472 cmd.exe 94 PID 1472 wrote to memory of 1688 1472 cmd.exe 94 PID 1472 wrote to memory of 1688 1472 cmd.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe"C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1952 -
C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe"C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4560 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\807e857b-8d5b-47d2-a00c-bbddc86d014f" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1976
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C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe"C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2084 -
C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe"C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4984 -
C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\build2.exe"C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4576 -
C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\build2.exe"C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\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:1388 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\build2.exe" & exit7⤵
- Suspicious use of WriteProcessMemory
PID:1472 -
C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
PID:1688
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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\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize2KB
MD5bf72e427cb37a9eea765a22bd913f4a9
SHA165472f30a9b5e73ab656b220200c08d80aa102f5
SHA2560bb3634c75731c7e50568ec1b894ce832b3a3b42990909c2bb6230c34756b1cc
SHA512681d5f0ef428c2dcb175ac1f4f1c6f944401fbee2eb5932973e47ab05f9a9c55fbbfa8dd6a57ec623cc6c759a743f4c532195eaf9561e6b1e536e7181bf9d140
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize1KB
MD538bc9052d67fb7ff388671b512e76cb2
SHA1097e30ab48d6130317a71cd53bd998c662d79171
SHA256427acbd4b71e76709af64c7e94e63649ef51518d632afa3d24f06e5aebf95b9b
SHA512a440c0983bbd454d421458d3203688b119bd56d7942fb6839868e183dcf9a838516aaa05295bf818149c39ce65509297ff8608241f62f82f289c35b17cc2043e
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize488B
MD5346aac76a020665c2217a9e193b8cf4c
SHA10540f0e374fea5f72aa30690cb326e02f6a4b9ff
SHA256e9a25b31050dd90b9d1d5410f6c740985d790dfaeefce85b6582d34a8fb8d7d8
SHA5129f3f61a9448c6201987e807918cd37b3ed914e7b110e7f55031fd5f8c7c00ed31bf06e82ae6f00d3283eb964313d3bb20f4c70f16246b19120bb759c3629ea20
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize482B
MD5565cbcccdd066b4e1954acda5ccebf35
SHA1af02777a32e68edd7fc8b03c4bc8f2cf4e8c5688
SHA2569f28b70e58d9acdd588e1031e7fdac6b3ae401f7799e97b34b0387f3c832d8b4
SHA51232013398902a1bc19cd69b42ae4ec032896b099b3a54dbfdbd7c28a704196947ecbfb560e0d2040554961a9de863d008381197c350b1173ce0170b5c5d09989e
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C:\Users\Admin\AppData\Local\807e857b-8d5b-47d2-a00c-bbddc86d014f\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe
Filesize789KB
MD52edfe3bc031c5cc9cc5bdf18aa7c3a02
SHA1b557b50822a2d788b410ead1e005197a0a4130d7
SHA256242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf
SHA512ef5e6255424a2fc58a0a8ffc44021b6d7c6f0e5f72644758d978ebeee0ebd3dff11e2b379cefa47573225f095a9225ce1c4e9b5d6cb79e79c534a9bcda9d690f
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Filesize
323KB
MD5efcd4db108fc262b0fba4f82692bfdf1
SHA15cc11f23b251c802e2e5497cc40d5702853e4f16
SHA2561aacaadce5954ff321f06df9cf1785902ef0b1806599b8b0aa477ae211ff2976
SHA5126c6cfe51f2686d26477934efe52a861c5a7bbd1baa4edac087c49058bca51d43b5be1214e22761ae63e98cd3e78c8aef51571835ac8e009cdc70c56439f2d15e
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Filesize
323KB
MD5efcd4db108fc262b0fba4f82692bfdf1
SHA15cc11f23b251c802e2e5497cc40d5702853e4f16
SHA2561aacaadce5954ff321f06df9cf1785902ef0b1806599b8b0aa477ae211ff2976
SHA5126c6cfe51f2686d26477934efe52a861c5a7bbd1baa4edac087c49058bca51d43b5be1214e22761ae63e98cd3e78c8aef51571835ac8e009cdc70c56439f2d15e
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Filesize
323KB
MD5efcd4db108fc262b0fba4f82692bfdf1
SHA15cc11f23b251c802e2e5497cc40d5702853e4f16
SHA2561aacaadce5954ff321f06df9cf1785902ef0b1806599b8b0aa477ae211ff2976
SHA5126c6cfe51f2686d26477934efe52a861c5a7bbd1baa4edac087c49058bca51d43b5be1214e22761ae63e98cd3e78c8aef51571835ac8e009cdc70c56439f2d15e