Analysis Overview
SHA256
05566346a9e66e8d4b072101a1835e4a2c7275a2d27627736f7281f29677db3d
Threat Level: Known bad
The file 20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker was found to be: Known bad.
Malicious Activity Summary
Berbew family
Malware Dropper & Backdoor - Berbew
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-22 19:10
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
2024-05-22 19:10
Reported
2024-05-22 19:13
Platform
win7-20240419-en
Max time kernel
148s
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\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2288 wrote to memory of 2096 | N/A | C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 2288 wrote to memory of 2096 | N/A | C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 2288 wrote to memory of 2096 | N/A | C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 2288 wrote to memory of 2096 | N/A | C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.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/2288-7-0x0000000000470000-0x0000000000476000-memory.dmp
memory/2288-1-0x0000000000480000-0x0000000000486000-memory.dmp
memory/2288-0-0x0000000000470000-0x0000000000476000-memory.dmp
\Users\Admin\AppData\Local\Temp\hasfj.exe
| MD5 | 8f688281d0a43fc7493ac07669afe540 |
| SHA1 | 2a8b6878c4e247af51be031ad8af811ece96f02b |
| SHA256 | af3a95ac4c6a6897daccde5a68c71744ca76a8b703e026d7cb017859280a78a9 |
| SHA512 | 39cb82611948afeea139f92bd12465fdcab59cd98efa95367f83e1b53ef377bf5fe4a2f604950b3d60d633e3f2ba1c57219971b8556c40a275854daebc7845aa |
memory/2096-15-0x0000000000390000-0x0000000000396000-memory.dmp
memory/2096-22-0x0000000000380000-0x0000000000386000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-22 19:10
Reported
2024-05-22 19:13
Platform
win10v2004-20240508-en
Max time kernel
150s
Max time network
147s
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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.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 3136 wrote to memory of 2892 | N/A | C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 3136 wrote to memory of 2892 | N/A | C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 3136 wrote to memory of 2892 | N/A | C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\20240522fbf553cdb875f52b97a7fd46214e62eacryptolocker.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 |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| NL | 23.62.61.129:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 129.61.62.23.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 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 100.58.20.217.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 | 234.197.17.2.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 | 57.169.31.20.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 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.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 | 43.58.199.20.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 |
Files
memory/3136-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/3136-1-0x0000000003150000-0x0000000003156000-memory.dmp
memory/3136-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\hasfj.exe
| MD5 | 8f688281d0a43fc7493ac07669afe540 |
| SHA1 | 2a8b6878c4e247af51be031ad8af811ece96f02b |
| SHA256 | af3a95ac4c6a6897daccde5a68c71744ca76a8b703e026d7cb017859280a78a9 |
| SHA512 | 39cb82611948afeea139f92bd12465fdcab59cd98efa95367f83e1b53ef377bf5fe4a2f604950b3d60d633e3f2ba1c57219971b8556c40a275854daebc7845aa |
memory/2892-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp
memory/2892-23-0x0000000001F90000-0x0000000001F96000-memory.dmp