Analysis Overview
SHA256
d58f39fe2e5475edaa5969ce6a01f4091fb36dc3cee7dc6e4cb226810d096c5d
Threat Level: Known bad
The file 2024-06-15_990b596bb17dd5b964401ff1ec331f66_cobalt-strike_ryuk was found to be: Known bad.
Malicious Activity Summary
Azov
Renames multiple (159) files with added filename extension
Renames multiple (109) files with added filename extension
Adds Run key to start application
Enumerates connected drives
Drops file in Program Files directory
Unsigned PE
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-15 10:36
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-15 10:36
Reported
2024-06-15 10:38
Platform
win7-20240220-en
Max time kernel
120s
Max time network
121s
Command Line
Signatures
Azov
Renames multiple (109) files with added filename extension
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Bandera = "C:\\ProgramData\\rdpclient.exe" | C:\Users\Admin\AppData\Local\Temp\2024-06-15_990b596bb17dd5b964401ff1ec331f66_cobalt-strike_ryuk.exe | N/A |
Enumerates connected drives
Drops file in Program Files directory
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-15_990b596bb17dd5b964401ff1ec331f66_cobalt-strike_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_990b596bb17dd5b964401ff1ec331f66_cobalt-strike_ryuk.exe"
Network
Files
memory/2276-2-0x000000013FCA0000-0x000000013FD08000-memory.dmp
memory/2276-13-0x0000000000B90000-0x0000000000B95000-memory.dmp
memory/2276-16-0x0000000000B90000-0x0000000000B95000-memory.dmp
memory/2276-6-0x0000000000E30000-0x0000000000E34000-memory.dmp
memory/2276-5-0x0000000000B90000-0x0000000000B95000-memory.dmp
memory/2276-4-0x00000000001E0000-0x00000000001E7000-memory.dmp
memory/2276-3-0x0000000000B90000-0x0000000000B95000-memory.dmp
memory/2276-0-0x0000000000E30000-0x0000000000E34000-memory.dmp
C:\Program Files\7-Zip\Lang\RESTORE_FILES.txt
| MD5 | 78ede93114e65f9160fd03d3357c56e6 |
| SHA1 | 88d531b101e57655f1d0d26c6b3257aa2468d460 |
| SHA256 | c97412fbf88da8f91099a52888dea4c3f222cd95af3e681e3271cbca8b6b7bb5 |
| SHA512 | 074a4c741273902ccacb6f573b96d8accedb2ee405dbd04350cdbf54d180c1fd577a4e90c2aae26bf72f3782403f4494db6e3501a04cfd9d7d81a6bc14884b9d |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-15 10:36
Reported
2024-06-15 10:38
Platform
win10v2004-20240611-en
Max time kernel
125s
Max time network
151s
Command Line
Signatures
Azov
Renames multiple (159) files with added filename extension
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Bandera = "C:\\ProgramData\\rdpclient.exe" | C:\Users\Admin\AppData\Local\Temp\2024-06-15_990b596bb17dd5b964401ff1ec331f66_cobalt-strike_ryuk.exe | N/A |
Enumerates connected drives
Drops file in Program Files directory
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-15_990b596bb17dd5b964401ff1ec331f66_cobalt-strike_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_990b596bb17dd5b964401ff1ec331f66_cobalt-strike_ryuk.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4452,i,8998666007764333392,14724298544432336038,262144 --variations-seed-version --mojo-platform-channel-handle=4204 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 13.107.21.237:443 | g.bing.com | tcp |
| NL | 23.62.61.129:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 129.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 35.15.31.184.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
Files
memory/4584-13-0x000002499B390000-0x000002499B395000-memory.dmp
memory/4584-12-0x000002499B390000-0x000002499B395000-memory.dmp
memory/4584-11-0x000002499B370000-0x000002499B377000-memory.dmp
memory/4584-6-0x000002499B3A0000-0x000002499B3A4000-memory.dmp
memory/4584-3-0x000002499B390000-0x000002499B395000-memory.dmp
memory/4584-2-0x00007FF75D780000-0x00007FF75D7E8000-memory.dmp
memory/4584-0-0x000002499B3A0000-0x000002499B3A4000-memory.dmp
C:\Program Files\7-Zip\Lang\RESTORE_FILES.txt
| MD5 | 78ede93114e65f9160fd03d3357c56e6 |
| SHA1 | 88d531b101e57655f1d0d26c6b3257aa2468d460 |
| SHA256 | c97412fbf88da8f91099a52888dea4c3f222cd95af3e681e3271cbca8b6b7bb5 |
| SHA512 | 074a4c741273902ccacb6f573b96d8accedb2ee405dbd04350cdbf54d180c1fd577a4e90c2aae26bf72f3782403f4494db6e3501a04cfd9d7d81a6bc14884b9d |