Analysis Overview
SHA256
52127c33c9ad7cfcb155bfeb0e4b0f99c5f62ab5f9674215051da794fb1c9784
Threat Level: Known bad
The file virussign.com_f4ff43e83bfb07433607639c71b4b3e0.vir was found to be: Known bad.
Malicious Activity Summary
Malware Dropper & Backdoor - Berbew
Berbew family
Deletes itself
Executes dropped EXE
Loads dropped DLL
Unsigned PE
Program crash
Suspicious behavior: RenamesItself
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-06-02 09:24
Signatures
Berbew family
Malware Dropper & Backdoor - Berbew
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-02 09:24
Reported
2024-06-02 09:26
Platform
win10v2004-20240508-en
Max time kernel
149s
Max time network
151s
Command Line
Signatures
Malware Dropper & Backdoor - Berbew
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | N/A |
Program crash
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4284 wrote to memory of 2092 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe |
| PID 4284 wrote to memory of 2092 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe |
| PID 4284 wrote to memory of 2092 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4284 -ip 4284
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4284 -s 208
C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe
C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2092 -ip 2092
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2092 -s 344
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2092 -ip 2092
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2092 -s 156
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 144.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.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 |
| US | 8.8.8.8:53 | 136.71.105.51.in-addr.arpa | udp |
Files
memory/4284-0-0x0000000000400000-0x00000000004F0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe
| MD5 | eec981c3f266ccd31df7503744c8cae0 |
| SHA1 | a756afee79cef3ed28f6f7d95af8eec60daaa698 |
| SHA256 | 84f40d34a4c3fe6a6e04fa75eb25e96e295f216204d9e153a3b5b4993e4f45c5 |
| SHA512 | 6d2c649eb2b283364f656fd3046e5255ec535c52bf455567427b0b82b2e6cd83be173c0fb09bb264b7c5ea05f6441ec0237fc9643b78e7b42c0310d73ce8f7bc |
memory/2092-7-0x0000000000400000-0x00000000004F0000-memory.dmp
memory/4284-6-0x0000000000400000-0x00000000004F0000-memory.dmp
memory/2092-8-0x0000000000400000-0x00000000004F0000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-02 09:24
Reported
2024-06-02 09:26
Platform
win7-20240221-en
Max time kernel
117s
Max time network
122s
Command Line
Signatures
Malware Dropper & Backdoor - Berbew
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | N/A |
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3012 wrote to memory of 3016 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe |
| PID 3012 wrote to memory of 3016 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe |
| PID 3012 wrote to memory of 3016 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe |
| PID 3012 wrote to memory of 3016 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe | C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe"
C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe
C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe
Network
Files
memory/3012-0-0x0000000000400000-0x00000000004F0000-memory.dmp
\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe
| MD5 | d7cb00b2c7578fd280e7100e1263e7c7 |
| SHA1 | 37209528f47c7bb64980d58a6707934636572e65 |
| SHA256 | 6a32f9b5db26c01bebecec4a3d7ac02de56d2a46828019f534cecd4e01fae88a |
| SHA512 | 97a8e6ee0235a14df304064281aa3603420cf5c583ccd3963ffddbbf227aaa3decfd2e96de2d91736a8db88865d3d78577b6e683b2d61c4e938382cf3fdb35bb |
memory/3016-10-0x0000000000400000-0x00000000004F0000-memory.dmp
memory/3016-9-0x0000000000400000-0x00000000004F0000-memory.dmp
memory/3012-8-0x0000000000400000-0x00000000004F0000-memory.dmp