Analysis Overview
SHA256
f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58
Threat Level: Known bad
The file f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58 was found to be: Known bad.
Malicious Activity Summary
Vidar
Detected Djvu ransomware
Djvu Ransomware
Downloads MZ/PE file
Executes dropped EXE
Checks computer location settings
Reads user/profile data of web browsers
Loads dropped DLL
Modifies file permissions
Checks installed software on the system
Accesses cryptocurrency files/wallets, possible credential harvesting
Accesses 2FA software files, possible credential harvesting
Looks up external IP address via web service
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-01-07 14:11
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-01-07 14:11
Reported
2023-01-07 14:13
Platform
win10v2004-20221111-en
Max time kernel
66s
Max time network
129s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
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Djvu Ransomware
Vidar
Downloads MZ/PE file
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe | N/A |
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Reads user/profile data of web browsers
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c46308f6-269a-440f-864d-3689dc054a77\\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe | N/A |
Checks installed software on the system
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4600 set thread context of 1628 | N/A | C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe | C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe |
| PID 3776 set thread context of 4368 | N/A | C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe | C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe |
| PID 3644 set thread context of 4456 | N/A | C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe | C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe
"C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe"
C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe
"C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\c46308f6-269a-440f-864d-3689dc054a77" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe
"C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe
"C:\Users\Admin\AppData\Local\Temp\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe
"C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe"
C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build3.exe
"C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build3.exe"
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"
C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe
"C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe" & exit
C:\Windows\SysWOW64\timeout.exe
timeout /t 6
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
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"
Network
| Country | Destination | Domain | Proto |
| N/A | 8.8.8.8:53 | api.2ip.ua | udp |
| N/A | 162.0.217.254:443 | api.2ip.ua | tcp |
| N/A | 162.0.217.254:443 | api.2ip.ua | tcp |
| N/A | 8.8.8.8:53 | spaceris.com | udp |
| N/A | 8.8.8.8:53 | uaery.top | udp |
| N/A | 109.98.58.98:80 | uaery.top | tcp |
| N/A | 187.170.238.164:80 | spaceris.com | tcp |
| N/A | 187.170.238.164:80 | spaceris.com | tcp |
| N/A | 8.8.8.8:53 | t.me | udp |
| N/A | 149.154.167.99:443 | t.me | tcp |
| N/A | 94.130.190.48:80 | 94.130.190.48 | tcp |
| N/A | 13.78.111.199:443 | tcp | |
| N/A | 104.80.225.205:443 | tcp | |
| N/A | 87.248.202.1:80 | tcp | |
| N/A | 87.248.202.1:80 | tcp | |
| N/A | 87.248.202.1:80 | tcp |
Files
memory/1628-132-0x0000000000000000-mapping.dmp
memory/1628-133-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4600-135-0x0000000004C83000-0x0000000004D15000-memory.dmp
memory/4600-136-0x0000000004DF0000-0x0000000004F0B000-memory.dmp
memory/1628-134-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1628-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1628-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1212-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\c46308f6-269a-440f-864d-3689dc054a77\f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58.exe
| MD5 | d4a28977e187ebeb03fd680fc51492d9 |
| SHA1 | 9be79283aca959e637433f349cc20ad1911b8cc1 |
| SHA256 | f978f4ad009963308ac46b1efa35fd601898b60bed076966633f4886a67d8d58 |
| SHA512 | 7274abed1240e3fb7e43ceac6f44ab22d3e0b29228b1f2a8535b7588c8fd839a2044a54d8991ea07754658898828f7c56542e6687030426ae874d1b463e7c56f |
memory/3776-141-0x0000000000000000-mapping.dmp
memory/1628-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4368-143-0x0000000000000000-mapping.dmp
memory/4368-147-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3776-146-0x0000000004D0D000-0x0000000004D9F000-memory.dmp
memory/4368-145-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 411cd537dcecbf901759b8e6c1bdb076 |
| SHA1 | 655df9870867a1760ad1a2c967b330c61767437a |
| SHA256 | aa9e441c6cf813efd9ba76fe4ae52d884a5c7d222ed221903c42f09bc14eb7db |
| SHA512 | ea780f875c86f8694f67d236a0af066b952862356edb681375e6c387103a91ce085345359f8fe83dd630d310ee6b7637512e5868951c4c257daa411ab9c03e71 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | fc2e59bf2d7b80696f13c31eba6a21a3 |
| SHA1 | eeccf43804c001d3f24f37b8412721bee6dbc7e9 |
| SHA256 | abc9c613f0b9df9984949e7183adfb868c8c3ae9443f8c0a109efc9c2a145d2d |
| SHA512 | cf6279b75e0a5250f772899fe71f9623bb7964acf48f0037958e7861b4c43b785cc2853bd0c38ef576c86c7c3d8b0229bd67dcdf9a7fd90e0c29f192dd26e64a |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 7c56401cb6bd1ae402e06f0fe35f81c4 |
| SHA1 | b82bbb9fa39266796cafcd308ef4300fc92e3399 |
| SHA256 | 0c58c7bc18d38a3096da6f3575f1c6f8d79b69382d8e89bb5fca917d3cdb7f65 |
| SHA512 | 2ea607c2dc04c8ef34ecb4c4bd297e0f0882b179303565863d1745172322133b78186fa04334e82c135e25fd717719ceec917f49682a4eac37034ea87bb2b6f3 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 2174ab87edd57e471eabe170890f9518 |
| SHA1 | cd8562752ea70a29fc7ce721f62d4c7119a3bda2 |
| SHA256 | b2ed368e2b9ccd14fb8c43e0a7c618000b66f060e9a17fba30b98ce9ce8afc3f |
| SHA512 | 00401de6dbf46124ea24cb64beb2d86c96271191079f6b9c26f64cb73e67c53fbd6cef08da7cc50e63890828d0cd94afcfb793700e50fc35eda6f3ee19b42eb0 |
memory/4368-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3644-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe
| MD5 | 8c14bb1505244971374a88f37a4ec22a |
| SHA1 | cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0 |
| SHA256 | f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962 |
| SHA512 | 5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e |
C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe
| MD5 | 8c14bb1505244971374a88f37a4ec22a |
| SHA1 | cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0 |
| SHA256 | f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962 |
| SHA512 | 5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e |
memory/4412-156-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/3424-159-0x0000000000000000-mapping.dmp
memory/4456-160-0x0000000000000000-mapping.dmp
memory/4456-161-0x0000000000400000-0x0000000000460000-memory.dmp
C:\Users\Admin\AppData\Local\c5bfbc71-dc16-47d0-80fe-72089a95f932\build2.exe
| MD5 | 8c14bb1505244971374a88f37a4ec22a |
| SHA1 | cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0 |
| SHA256 | f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962 |
| SHA512 | 5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e |
memory/4456-164-0x0000000000400000-0x0000000000460000-memory.dmp
memory/3644-165-0x0000000000600000-0x000000000064C000-memory.dmp
memory/4456-166-0x0000000000400000-0x0000000000460000-memory.dmp
memory/3644-163-0x00000000006A8000-0x00000000006D5000-memory.dmp
memory/4456-167-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4368-168-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4456-169-0x00000000509B0000-0x0000000050A42000-memory.dmp
C:\ProgramData\nss3.dll
| MD5 | bfac4e3c5908856ba17d41edcd455a51 |
| SHA1 | 8eec7e888767aa9e4cca8ff246eb2aacb9170428 |
| SHA256 | e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78 |
| SHA512 | 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66 |
C:\ProgramData\mozglue.dll
| MD5 | 8f73c08a9660691143661bf7332c3c27 |
| SHA1 | 37fa65dd737c50fda710fdbde89e51374d0c204a |
| SHA256 | 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd |
| SHA512 | 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89 |
memory/4456-190-0x0000000000400000-0x0000000000460000-memory.dmp
memory/2556-191-0x0000000000000000-mapping.dmp
memory/4456-192-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4712-193-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/1476-196-0x0000000000000000-mapping.dmp