Analysis Overview
SHA256
b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91
Threat Level: Known bad
The file b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91 was found to be: Known bad.
Malicious Activity Summary
Blackmoon, KrBanker
Detect Blackmoon payload
Blocklisted process makes network request
Writes to the Master Boot Record (MBR)
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-26 10:31
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-26 10:31
Reported
2024-05-26 10:34
Platform
win10v2004-20240426-en
Max time kernel
134s
Max time network
105s
Command Line
Signatures
Blackmoon, KrBanker
Detect Blackmoon payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PhysicalDrive0 | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened for modification | \??\PHYSICALDRIVE0 | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4468 wrote to memory of 2392 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4468 wrote to memory of 2392 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4468 wrote to memory of 2392 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | fg02.907mu.com | udp |
| CN | 45.251.10.24:12345 | fg02.907mu.com | tcp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
Files
memory/2392-0-0x0000000010000000-0x00000000103FE000-memory.dmp
memory/2392-1-0x0000000010000000-0x00000000103FE000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-26 10:31
Reported
2024-05-26 10:34
Platform
win7-20240215-en
Max time kernel
118s
Max time network
120s
Command Line
Signatures
Blackmoon, KrBanker
Detect Blackmoon payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PHYSICALDRIVE0 | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened for modification | \??\PhysicalDrive0 | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2364 wrote to memory of 1744 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2364 wrote to memory of 1744 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2364 wrote to memory of 1744 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2364 wrote to memory of 1744 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2364 wrote to memory of 1744 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2364 wrote to memory of 1744 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2364 wrote to memory of 1744 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | fg02.907mu.com | udp |
| CN | 45.251.10.24:12345 | fg02.907mu.com | tcp |
Files
memory/1744-0-0x0000000010000000-0x00000000103FE000-memory.dmp
memory/1744-1-0x0000000010000000-0x00000000103FE000-memory.dmp
memory/1744-3-0x0000000010000000-0x00000000103FE000-memory.dmp
memory/1744-2-0x0000000010000000-0x00000000103FE000-memory.dmp
memory/1744-4-0x0000000010000000-0x00000000103FE000-memory.dmp