Analysis Overview
SHA256
8cb6ae47abc07ba60ce022f5b31821a9e587bd6beb14a39adc91e9cdb9f9a4b4
Threat Level: Known bad
The file virussign.com_aa1f1c4fb3a851d59865993e808c50b0.vir was found to be: Known bad.
Malicious Activity Summary
Berbew family
Malware Dropper & Backdoor - Berbew
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-02 10:22
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: behavioral1
Detonation Overview
Submitted
2024-06-02 10:22
Reported
2024-06-02 10:25
Platform
win7-20240508-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
Malware Dropper & Backdoor - Berbew
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\hasfj.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1368 wrote to memory of 2324 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 1368 wrote to memory of 2324 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 1368 wrote to memory of 2324 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 1368 wrote to memory of 2324 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe"
C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | mytarta.com | udp |
Files
memory/1368-0-0x0000000000470000-0x0000000000476000-memory.dmp
memory/1368-8-0x0000000000470000-0x0000000000476000-memory.dmp
memory/1368-1-0x0000000000480000-0x0000000000486000-memory.dmp
\Users\Admin\AppData\Local\Temp\hasfj.exe
| MD5 | 3e140d5c5f2fad30d21655edc4b1c5f1 |
| SHA1 | a3ed05d6c4e30af90f26fc68a4b639793bbca816 |
| SHA256 | f0b23e1c2105c1c3be9703e7fed8b1a03e1c2487d8264a1e84d6481f5e36ee17 |
| SHA512 | 55dcbd8391cc7a390eab9729f19da90893ac6be98b555a2cb82895ff9e1867057df15f14ebdb095e5863b17541409847c65b6b29062a0992bc8e873720c0a9c0 |
memory/2324-15-0x00000000003B0000-0x00000000003B6000-memory.dmp
memory/2324-22-0x00000000003A0000-0x00000000003A6000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-02 10:22
Reported
2024-06-02 10:25
Platform
win10v2004-20240226-en
Max time kernel
151s
Max time network
155s
Command Line
Signatures
Malware Dropper & Backdoor - Berbew
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\hasfj.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 824 wrote to memory of 3736 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 824 wrote to memory of 3736 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 824 wrote to memory of 3736 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_aa1f1c4fb3a851d59865993e808c50b0.exe"
C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.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 --no-appcompat-clear --mojo-platform-channel-handle=4076 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 152.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| GB | 23.44.234.16:80 | tcp | |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | 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 | mytarta.com | udp |
| US | 13.107.253.64:443 | tcp | |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 164.189.21.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 224.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| NL | 52.142.223.178:80 | tcp | |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 226.162.46.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
Files
memory/824-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/824-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/824-2-0x0000000003150000-0x0000000003156000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\hasfj.exe
| MD5 | 3e140d5c5f2fad30d21655edc4b1c5f1 |
| SHA1 | a3ed05d6c4e30af90f26fc68a4b639793bbca816 |
| SHA256 | f0b23e1c2105c1c3be9703e7fed8b1a03e1c2487d8264a1e84d6481f5e36ee17 |
| SHA512 | 55dcbd8391cc7a390eab9729f19da90893ac6be98b555a2cb82895ff9e1867057df15f14ebdb095e5863b17541409847c65b6b29062a0992bc8e873720c0a9c0 |
memory/3736-17-0x0000000003010000-0x0000000003016000-memory.dmp