Analysis Overview
SHA256
f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95
Threat Level: Known bad
The file f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Vidar
Executes dropped EXE
Downloads MZ/PE file
Checks computer location settings
Modifies file permissions
Adds Run key to start application
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-12-01 03:45
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-12-01 03:45
Reported
2022-12-01 03:48
Platform
win10v2004-20221111-en
Max time kernel
162s
Max time network
184s
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\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build3.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe | N/A |
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9eba9974-5b95-4fdc-88a3-484078cd628c\\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe | N/A |
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 3288 set thread context of 1148 | N/A | C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe | C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe |
| PID 2288 set thread context of 2196 | N/A | C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe | C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe |
| PID 2616 set thread context of 4452 | N/A | C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe | C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe
"C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe"
C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe
"C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\9eba9974-5b95-4fdc-88a3-484078cd628c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe
"C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe
"C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe
"C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe"
C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe
"C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe"
C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build3.exe
"C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\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"
Network
| Country | Destination | Domain | Proto |
| N/A | 51.105.71.136:443 | tcp | |
| N/A | 8.8.8.8:53 | api.2ip.ua | udp |
| N/A | 162.0.217.254:443 | api.2ip.ua | tcp |
| N/A | 8.8.8.8:53 | 164.2.77.40.in-addr.arpa | udp |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 40.126.32.134:443 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 8.8.8.8:53 | 14.110.152.52.in-addr.arpa | udp |
| N/A | 8.8.8.8:53 | crl.usertrust.com | udp |
| N/A | 104.18.32.68:80 | crl.usertrust.com | tcp |
| N/A | 40.126.32.133:443 | tcp | |
| N/A | 8.8.8.8:53 | 9.9.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.2.0.0.0.0.2.0.1.3.0.6.2.ip6.arpa | udp |
| N/A | 162.0.217.254:443 | api.2ip.ua | tcp |
| N/A | 172.64.155.188:80 | crl.usertrust.com | tcp |
| N/A | 8.8.8.8:53 | uaery.top | udp |
| N/A | 8.8.8.8:53 | fresherlights.com | udp |
| N/A | 109.102.255.230:80 | uaery.top | tcp |
| N/A | 46.195.100.42:80 | fresherlights.com | tcp |
| N/A | 46.195.100.42:80 | fresherlights.com | tcp |
| N/A | 93.184.221.240:80 | tcp |
Files
memory/1148-132-0x0000000000000000-mapping.dmp
memory/1148-133-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3288-134-0x000000000223E000-0x00000000022D0000-memory.dmp
memory/1148-135-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3288-136-0x0000000002390000-0x00000000024AB000-memory.dmp
memory/1148-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1148-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4328-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\9eba9974-5b95-4fdc-88a3-484078cd628c\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe
| MD5 | cf71bc7cbcd455475e601421ae0a09f6 |
| SHA1 | 7de15815b0885340bb5a45887fb98a8b225b1633 |
| SHA256 | f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95 |
| SHA512 | 83422baa07f1c00ed240b8f946a1f3ef51b6be491dd8aebd4216de3efd306a6cd849c0c36bd3c8c0e7fa883e96bce01c9f9d0c32738bcf0c78ec91b517372ff8 |
memory/2288-141-0x0000000000000000-mapping.dmp
memory/1148-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2196-143-0x0000000000000000-mapping.dmp
memory/2288-145-0x0000000002115000-0x00000000021A7000-memory.dmp
memory/2196-146-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2196-147-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2196-149-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 916c512d221c683beeea9d5cb311b0b0 |
| SHA1 | bf0db4b1c4566275b629efb095b6ff8857b5748e |
| SHA256 | 64a36c1637d0a111152002a2c0385b0df9dd81b616b3f2073fbbe3f2975aa4d8 |
| SHA512 | af32cffea722438e9b17b08062dc2e209edc5417418964ead0b392bd502e1a647a8456b2ee2ea59faf69f93d0c6ea6f15949b6c30924db7da65b91cb18e8dc6c |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | e815cc92bc850d3c7595172fe43f9e0b |
| SHA1 | 8a834b79537aad1763379fc3c433158d22c9323b |
| SHA256 | ad9687e8531d5a7472ed2f615dbdd36256166040e567081a0a07b15efcf16c62 |
| SHA512 | 7de5723fb554a4989006f4c91bc03b0b131d381e04658ec331b078d4dfb1ccd8f934f47ca470f9e130a5918fa802621a0917ec8e88194bcf76a1290da1e53986 |
C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/2616-152-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/4452-155-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/4452-156-0x0000000000400000-0x000000000045F000-memory.dmp
memory/4452-159-0x0000000000400000-0x000000000045F000-memory.dmp
memory/2616-158-0x000000000058E000-0x00000000005BA000-memory.dmp
memory/2616-161-0x0000000002070000-0x00000000020BB000-memory.dmp
memory/4452-160-0x0000000000400000-0x000000000045F000-memory.dmp
memory/4452-162-0x0000000000400000-0x000000000045F000-memory.dmp
memory/2196-163-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4296-164-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/1580-167-0x0000000000000000-mapping.dmp