Analysis
- max time kernel
75s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
21/04/2022, 23:50
Static task
static1
Behavioral task
behavioral1
Sample
buildp.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
buildp.exe
Resource
win10v2004-20220414-en
General
- Target buildp.exe
- Size 841KB
- Sample220421-3vt5eadffr
- SHA256 72cd1426f13a698c7d63a288f4920147812303e8f10a4e66e414cc7c2206381d
- MD5 efed57771cb41fdde63781d1e195912c
- SHA1 a71b0545951c99eb6ad4a50c22d02c958003d920
- SHA512 6fd84f80ba5f3c53f48a6a0135cedc7b489cca419742e043116468bcda0898398dd7ddff4ac7d0d8b283312d4c411790b8ff74276f14016021597498b306a080
- MD5 SHA1 SHA512
Malware Config
Extracted
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djvu
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http://fuyt.org/lancer/get.php
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extension
.gtys
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offline_id
qwVQoIsE2xLety0oNWloOilSDuIBXJGK86LM3ot1
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payload_url
http://zerit.top/dl/build2.exe
http://fuyt.org/files/1/build3.exe
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ransomnote
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Extracted
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vidar
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51.8
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517
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https://t.me/mm20220428
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https://koyu.space/@ronxik123
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profile_id
517
Signatures
- Detected Djvu ransomware 8 IoCs
resource yara_rule behavioral2/memory/3664-131-0x00000000023F0000-0x000000000250B000-memory.dmp family_djvu behavioral2/memory/2840-133-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2840-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2840-135-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2840-136-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/424-143-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/424-144-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/424-149-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu - Djvu Ransomware
Ransomware which is a variant of the STOP family.
- suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
- Vidar Stealer 5 IoCs
resource yara_rule behavioral2/memory/508-155-0x0000000000400000-0x000000000044C000-memory.dmp family_vidar behavioral2/memory/2240-159-0x00000000020F0000-0x0000000002139000-memory.dmp family_vidar behavioral2/memory/508-157-0x0000000000400000-0x000000000044C000-memory.dmp family_vidar behavioral2/memory/508-160-0x0000000000400000-0x000000000044C000-memory.dmp family_vidar behavioral2/memory/508-161-0x0000000000400000-0x000000000044C000-memory.dmp family_vidar - Downloads MZ/PE file
- Executes dropped EXE 2 IoCs
pid Process 2240 build2.exe 508 build2.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-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation buildp.exe Key value queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation buildp.exe - Loads dropped DLL 2 IoCs
pid Process 508 build2.exe 508 build2.exe - Modifies file permissions 1 TTPs 1 IoCs
pid Process 1488 icacls.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\381cf9b3-f3d4-41df-ba66-dc41cb773959\\buildp.exe\" --AutoStart" buildp.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- 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 9 api.2ip.ua 1 api.2ip.ua 2 api.2ip.ua - Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 3664 set thread context of 2840 3664 buildp.exe 79 PID 1908 set thread context of 424 1908 buildp.exe 83 PID 2240 set thread context of 508 2240 build2.exe 85 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- 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 -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 buildp.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 buildp.exe - Suspicious behavior: EnumeratesProcesses 12 IoCs
pid Process 2840 buildp.exe 2840 buildp.exe 424 buildp.exe 424 buildp.exe 508 build2.exe 508 build2.exe 508 build2.exe 508 build2.exe 508 build2.exe 508 build2.exe 508 build2.exe 508 build2.exe - Suspicious use of WriteProcessMemory 37 IoCs
description pid Process procid_target PID 3664 wrote to memory of 2840 3664 buildp.exe 79 PID 3664 wrote to memory of 2840 3664 buildp.exe 79 PID 3664 wrote to memory of 2840 3664 buildp.exe 79 PID 3664 wrote to memory of 2840 3664 buildp.exe 79 PID 3664 wrote to memory of 2840 3664 buildp.exe 79 PID 3664 wrote to memory of 2840 3664 buildp.exe 79 PID 3664 wrote to memory of 2840 3664 buildp.exe 79 PID 3664 wrote to memory of 2840 3664 buildp.exe 79 PID 3664 wrote to memory of 2840 3664 buildp.exe 79 PID 3664 wrote to memory of 2840 3664 buildp.exe 79 PID 2840 wrote to memory of 1488 2840 buildp.exe 80 PID 2840 wrote to memory of 1488 2840 buildp.exe 80 PID 2840 wrote to memory of 1488 2840 buildp.exe 80 PID 2840 wrote to memory of 1908 2840 buildp.exe 81 PID 2840 wrote to memory of 1908 2840 buildp.exe 81 PID 2840 wrote to memory of 1908 2840 buildp.exe 81 PID 1908 wrote to memory of 424 1908 buildp.exe 83 PID 1908 wrote to memory of 424 1908 buildp.exe 83 PID 1908 wrote to memory of 424 1908 buildp.exe 83 PID 1908 wrote to memory of 424 1908 buildp.exe 83 PID 1908 wrote to memory of 424 1908 buildp.exe 83 PID 1908 wrote to memory of 424 1908 buildp.exe 83 PID 1908 wrote to memory of 424 1908 buildp.exe 83 PID 1908 wrote to memory of 424 1908 buildp.exe 83 PID 1908 wrote to memory of 424 1908 buildp.exe 83 PID 1908 wrote to memory of 424 1908 buildp.exe 83 PID 424 wrote to memory of 2240 424 buildp.exe 84 PID 424 wrote to memory of 2240 424 buildp.exe 84 PID 424 wrote to memory of 2240 424 buildp.exe 84 PID 2240 wrote to memory of 508 2240 build2.exe 85 PID 2240 wrote to memory of 508 2240 build2.exe 85 PID 2240 wrote to memory of 508 2240 build2.exe 85 PID 2240 wrote to memory of 508 2240 build2.exe 85 PID 2240 wrote to memory of 508 2240 build2.exe 85 PID 2240 wrote to memory of 508 2240 build2.exe 85 PID 2240 wrote to memory of 508 2240 build2.exe 85 PID 2240 wrote to memory of 508 2240 build2.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\buildp.exe"C:\Users\Admin\AppData\Local\Temp\buildp.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3664 -
C:\Users\Admin\AppData\Local\Temp\buildp.exe"C:\Users\Admin\AppData\Local\Temp\buildp.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2840 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\381cf9b3-f3d4-41df-ba66-dc41cb773959" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1488
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C:\Users\Admin\AppData\Local\Temp\buildp.exe"C:\Users\Admin\AppData\Local\Temp\buildp.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1908 -
C:\Users\Admin\AppData\Local\Temp\buildp.exe"C:\Users\Admin\AppData\Local\Temp\buildp.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:424 -
C:\Users\Admin\AppData\Local\91721969-9736-40fc-83db-5d297c760933\build2.exe"C:\Users\Admin\AppData\Local\91721969-9736-40fc-83db-5d297c760933\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2240 -
C:\Users\Admin\AppData\Local\91721969-9736-40fc-83db-5d297c760933\build2.exe"C:\Users\Admin\AppData\Local\91721969-9736-40fc-83db-5d297c760933\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:508
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\ProgramData\mozglue.dll
- Size 133KB
- SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
- MD5 8f73c08a9660691143661bf7332c3c27
- SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
- SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
- SSDEEP 3072:7Gyzk/x2Wp53pUzPoNpj/kVghp1qt/dXDyp4D2JJJvPhrSeTuk:6yQ2Wp53iO/kVghp12/dXDyyD2JJJvPR
- MD5 SHA1 SHA512 SSDEEP
- Path C:\ProgramData\nss3.dll
- Size 1.2MB
- SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
- MD5 bfac4e3c5908856ba17d41edcd455a51
- SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
- SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
- SSDEEP 24576:Sb5zzlswYNYLVJAwfpeYQ1Dw/fEE8DhSJVIVfRyAkgO6S/V/jbHpls4MSRSMxkoo:4zW5ygDwnEZIYkjgWjblMSRSMqH
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
- Size 727B
- SHA256 8893c680c876c7e9a453e301b2763e4310c2fc165bcb8e6cf23ae117f6cff476
- MD5 ae80420644f9d17a1ceb04dfe52b4551
- SHA1 aca7052dea384b8d31813c11839d16dcef04a4b5
- SHA512 3f742909f7dc09e109f0eec4c245f3be76121dfdab494252eba5edb1907402cf7867cdc7595c529d3445a1676750aebbf9aba4df760ad58645aaf3d897a82a6d
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
- Size 471B
- SHA256 2d25e68537528a81bcadb24f24afda11671512a17d04ed304cf138a30b228866
- MD5 4b48eeea719432bc0719653be71e6ecf
- SHA1 41367524cf7d0c34d7737722cb2212558fca9938
- SHA512 152b287e3d0c05f3b4dea98a20e1fc39a61008b3d5c4acc7632647bdffc090ef2ea76d4ec3a6d0cf3387c9f2f43fde1624f213908beb9583b6ad43429f551533
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
- Size 402B
- SHA256 537cf57c8965c0f964a897043538cf87a55502a5cbeda80884796790968f82ab
- MD5 7128550e05b6fc26f789d5c439c12ba1
- SHA1 af8730934a98736e5895ce9b89da691dbac88fc8
- SHA512 21adf8d59770becc8041879c8965d625fd30ba7665def2b8ef8906f6bfa75d4c271135d57781bb42a478e5e4c7cb15cb089f9cb0cc3ea2ad34b50721facbf5e8
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
- Size 396B
- SHA256 f429b2a96345fce32535f466d92708cb4e1da2513ba6bb5a71106cf4dbad1f44
- MD5 a2ebfc0e45827cff15111c6772f01af1
- SHA1 916444dcbf6eb7ef2ea451d02931a63b279143bd
- SHA512 9f6819b285d0ba2e18ef6349418adc4c44e6f5158818fa72baf8f016be760366c17267d5f409d3d0f448928f95c71dfd8c78245d922685ac9892926fd3881fec
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\381cf9b3-f3d4-41df-ba66-dc41cb773959\buildp.exe
- Size 841KB
- SHA256 72cd1426f13a698c7d63a288f4920147812303e8f10a4e66e414cc7c2206381d
- MD5 efed57771cb41fdde63781d1e195912c
- SHA1 a71b0545951c99eb6ad4a50c22d02c958003d920
- SHA512 6fd84f80ba5f3c53f48a6a0135cedc7b489cca419742e043116468bcda0898398dd7ddff4ac7d0d8b283312d4c411790b8ff74276f14016021597498b306a080
- SSDEEP 12288:T6yGAUcLloo2XL1xe6OVrkfi6UgyN1QGNrGgMup2VymX8doloUw4mSrT9n8nvunJ:uZcLKoAL1s6OVrITCPp2V5oYmSunIwE
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\91721969-9736-40fc-83db-5d297c760933\build2.exe
- Size 368KB
- SHA256 f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95
- MD5 ad1b502b6714c0a374b055332018974b
- SHA1 672f4e44475177ddcb1bfa73db3c5dee0f031bc2
- SHA512 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e
- SSDEEP 6144:Da7UgGgzHDVZzNHo8/4KXV2NHqV4etxxn/NXSKbMWX12Vx0WrZnX1M:uSgzjVZzNHo5KF2NHqVTtxx/NCKAo1U5
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\91721969-9736-40fc-83db-5d297c760933\build2.exe
- Size 368KB
- SHA256 f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95
- MD5 ad1b502b6714c0a374b055332018974b
- SHA1 672f4e44475177ddcb1bfa73db3c5dee0f031bc2
- SHA512 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e
- SSDEEP 6144:Da7UgGgzHDVZzNHo8/4KXV2NHqV4etxxn/NXSKbMWX12Vx0WrZnX1M:uSgzjVZzNHo5KF2NHqVTtxx/NCKAo1U5
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\91721969-9736-40fc-83db-5d297c760933\build2.exe
- Size 368KB
- SHA256 f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95
- MD5 ad1b502b6714c0a374b055332018974b
- SHA1 672f4e44475177ddcb1bfa73db3c5dee0f031bc2
- SHA512 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e
- SSDEEP 6144:Da7UgGgzHDVZzNHo8/4KXV2NHqV4etxxn/NXSKbMWX12Vx0WrZnX1M:uSgzjVZzNHo5KF2NHqVTtxx/NCKAo1U5
- MD5 SHA1 SHA512 SSDEEP