Analysis Overview
SHA256
a92f8917b2e98217ede5359f7906dd0a60df26e087a1e1c33b81797a334fb448
Threat Level: Known bad
The file bis.exe.vir was found to be: Known bad.
Malicious Activity Summary
Xloader
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (GET)
Xloader Payload
Adds policy Run key to start application
Checks computer location settings
Reads user/profile data of web browsers
Deletes itself
Adds Run key to start application
Suspicious use of SetThreadContext
Drops file in Program Files directory
Suspicious behavior: MapViewOfSection
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SendNotifyMessage
Suspicious use of FindShellTrayWindow
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Modifies Internet Explorer settings
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-06-21 10:20
Signatures
Analysis: behavioral2
Detonation Overview
Submitted
2022-06-21 10:20
Reported
2022-06-21 10:22
Platform
win10v2004-20220414-en
Max time kernel
151s
Max time network
152s
Command Line
Signatures
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Xloader Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run | C:\Windows\SysWOW64\mstsc.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DXP01NUXLXD = "C:\\Program Files (x86)\\Yevu\\9rkl_clttq0.exe" | C:\Windows\SysWOW64\mstsc.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2276 set thread context of 2544 | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | C:\Users\Admin\AppData\Local\Temp\bis.exe |
| PID 2544 set thread context of 2044 | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | C:\Windows\Explorer.EXE |
| PID 2328 set thread context of 2044 | N/A | C:\Windows\SysWOW64\mstsc.exe | C:\Windows\Explorer.EXE |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Yevu\9rkl_clttq0.exe | C:\Windows\SysWOW64\mstsc.exe | N/A |
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Key created | \Registry\User\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 | C:\Windows\SysWOW64\mstsc.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Explorer.EXE | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\mstsc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\mstsc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\mstsc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\mstsc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\mstsc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
C:\Users\Admin\AppData\Local\Temp\bis.exe
"C:\Users\Admin\AppData\Local\Temp\bis.exe"
C:\Users\Admin\AppData\Local\Temp\bis.exe
"C:\Users\Admin\AppData\Local\Temp\bis.exe"
C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.exe"
C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\bis.exe"
C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
Network
| Country | Destination | Domain | Proto |
| NL | 88.221.144.192:80 | tcp | |
| NL | 88.221.144.192:80 | tcp | |
| US | 8.8.8.8:53 | www.kayxuncut.com | udp |
| US | 192.0.78.25:80 | www.kayxuncut.com | tcp |
| US | 8.8.8.8:53 | www.numitoken.site | udp |
| US | 192.64.117.61:80 | www.numitoken.site | tcp |
| US | 8.8.8.8:53 | www.syz501.xyz | udp |
| US | 104.21.60.221:80 | www.syz501.xyz | tcp |
| US | 8.8.8.8:53 | www.iflcandy.com | udp |
| HK | 156.238.118.169:80 | www.iflcandy.com | tcp |
| US | 8.8.8.8:53 | www.baintsras.com | udp |
| US | 199.192.20.117:80 | www.baintsras.com | tcp |
| US | 8.8.8.8:53 | www.usbmicroscopy.com | udp |
| US | 34.102.136.180:80 | www.usbmicroscopy.com | tcp |
| US | 34.102.136.180:80 | www.usbmicroscopy.com | tcp |
| US | 34.102.136.180:80 | www.usbmicroscopy.com | tcp |
| US | 8.8.8.8:53 | www.f8bet73.com | udp |
| VN | 103.18.6.109:80 | www.f8bet73.com | tcp |
| VN | 103.18.6.109:80 | www.f8bet73.com | tcp |
| VN | 103.18.6.109:80 | www.f8bet73.com | tcp |
| US | 8.8.8.8:53 | www.ucqwe.top | udp |
| US | 8.8.8.8:53 | www.dongnancc1996.xyz | udp |
| HK | 43.132.238.133:80 | www.dongnancc1996.xyz | tcp |
| HK | 43.132.238.133:80 | www.dongnancc1996.xyz | tcp |
| HK | 43.132.238.133:80 | www.dongnancc1996.xyz | tcp |
| US | 8.8.8.8:53 | www.yjgbm.xyz | udp |
Files
memory/2276-130-0x00000000002B0000-0x0000000000328000-memory.dmp
memory/2276-131-0x00000000051E0000-0x0000000005784000-memory.dmp
memory/2276-132-0x0000000004CD0000-0x0000000004D62000-memory.dmp
memory/2276-133-0x0000000004D70000-0x0000000004D7A000-memory.dmp
memory/2276-134-0x00000000088F0000-0x000000000898C000-memory.dmp
memory/2544-135-0x0000000000000000-mapping.dmp
memory/2544-136-0x0000000000400000-0x000000000042C000-memory.dmp
memory/2544-138-0x0000000000400000-0x000000000042C000-memory.dmp
memory/2544-139-0x0000000001760000-0x0000000001AAA000-memory.dmp
memory/2544-140-0x0000000001720000-0x0000000001731000-memory.dmp
memory/2044-141-0x0000000008AE0000-0x0000000008BD1000-memory.dmp
memory/2328-142-0x0000000000000000-mapping.dmp
memory/4232-143-0x0000000000000000-mapping.dmp
memory/2328-144-0x0000000000680000-0x00000000007BA000-memory.dmp
memory/2328-145-0x0000000000E50000-0x0000000000E7C000-memory.dmp
memory/2328-146-0x0000000002D60000-0x00000000030AA000-memory.dmp
memory/2328-147-0x0000000002BF0000-0x0000000002C80000-memory.dmp
memory/2044-148-0x0000000008BE0000-0x0000000008CF8000-memory.dmp
memory/2328-149-0x0000000000E50000-0x0000000000E7C000-memory.dmp
memory/2044-150-0x0000000008BE0000-0x0000000008CF8000-memory.dmp
memory/1264-151-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\DB1
| MD5 | b608d407fc15adea97c26936bc6f03f6 |
| SHA1 | 953e7420801c76393902c0d6bb56148947e41571 |
| SHA256 | b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf |
| SHA512 | cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4 |
memory/3052-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\DB1
| MD5 | 349e6eb110e34a08924d92f6b334801d |
| SHA1 | bdfb289daff51890cc71697b6322aa4b35ec9169 |
| SHA256 | c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a |
| SHA512 | 2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574 |
Analysis: behavioral1
Detonation Overview
Submitted
2022-06-21 10:20
Reported
2022-06-21 10:22
Platform
win7-20220414-en
Max time kernel
150s
Max time network
152s
Command Line
Signatures
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Xloader Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds policy Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run | C:\Windows\SysWOW64\help.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DTXDDXWH5T0 = "C:\\Program Files (x86)\\Lwfylpf\\updateojshll20.exe" | C:\Windows\SysWOW64\help.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1948 set thread context of 1328 | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | C:\Users\Admin\AppData\Local\Temp\bis.exe |
| PID 1328 set thread context of 1256 | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | C:\Windows\Explorer.EXE |
| PID 936 set thread context of 1256 | N/A | C:\Windows\SysWOW64\help.exe | C:\Windows\Explorer.EXE |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Lwfylpf\updateojshll20.exe | C:\Windows\SysWOW64\help.exe | N/A |
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Key created | \Registry\User\S-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 | C:\Windows\SysWOW64\help.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\help.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\bis.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\help.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Explorer.EXE | N/A |
| N/A | N/A | C:\Windows\Explorer.EXE | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Explorer.EXE | N/A |
| N/A | N/A | C:\Windows\Explorer.EXE | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
C:\Users\Admin\AppData\Local\Temp\bis.exe
"C:\Users\Admin\AppData\Local\Temp\bis.exe"
C:\Users\Admin\AppData\Local\Temp\bis.exe
"C:\Users\Admin\AppData\Local\Temp\bis.exe"
C:\Users\Admin\AppData\Local\Temp\bis.exe
"C:\Users\Admin\AppData\Local\Temp\bis.exe"
C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\bis.exe"
C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.right2ira.com | udp |
| US | 99.83.154.118:80 | www.right2ira.com | tcp |
| US | 8.8.8.8:53 | www.excel-plastics.com | udp |
| DE | 3.64.163.50:80 | www.excel-plastics.com | tcp |
| US | 8.8.8.8:53 | www.getampfit.com | udp |
| US | 38.26.148.145:80 | www.getampfit.com | tcp |
| US | 8.8.8.8:53 | www.shidkjw.com | udp |
| HK | 154.86.177.21:80 | www.shidkjw.com | tcp |
| US | 8.8.8.8:53 | www.iflcandy.com | udp |
| HK | 156.238.118.169:80 | www.iflcandy.com | tcp |
| US | 8.8.8.8:53 | www.secure-id6793-chase.com | udp |
| US | 8.8.8.8:53 | www.strictlynightowl.com | udp |
| CA | 23.227.38.74:80 | www.strictlynightowl.com | tcp |
| US | 8.8.8.8:53 | www.wanttick.com | udp |
| US | 103.224.212.221:80 | www.wanttick.com | tcp |
| US | 8.8.8.8:53 | www.baintsras.com | udp |
| US | 199.192.20.117:80 | www.baintsras.com | tcp |
| US | 8.8.8.8:53 | www.shopsh.xyz | udp |
Files
memory/1948-54-0x0000000000C00000-0x0000000000C78000-memory.dmp
memory/1948-55-0x00000000754A1000-0x00000000754A3000-memory.dmp
memory/1948-56-0x00000000002C0000-0x00000000002CE000-memory.dmp
memory/1948-57-0x0000000004F50000-0x0000000004FBA000-memory.dmp
memory/1948-58-0x0000000000510000-0x0000000000542000-memory.dmp
memory/1328-59-0x0000000000400000-0x000000000042C000-memory.dmp
memory/1328-60-0x0000000000400000-0x000000000042C000-memory.dmp
memory/1328-62-0x0000000000400000-0x000000000042C000-memory.dmp
memory/1328-63-0x000000000041F6C0-mapping.dmp
memory/1328-65-0x0000000000400000-0x000000000042C000-memory.dmp
memory/1328-66-0x0000000000C80000-0x0000000000F83000-memory.dmp
memory/1328-67-0x0000000000130000-0x0000000000141000-memory.dmp
memory/1256-68-0x0000000006D00000-0x0000000006E81000-memory.dmp
memory/936-69-0x0000000000000000-mapping.dmp
memory/1960-70-0x0000000000000000-mapping.dmp
memory/936-71-0x0000000000FD0000-0x0000000000FD6000-memory.dmp
memory/936-72-0x0000000000860000-0x0000000000B63000-memory.dmp
memory/936-73-0x0000000000080000-0x00000000000AC000-memory.dmp
memory/936-74-0x0000000000470000-0x0000000000500000-memory.dmp
memory/1256-75-0x0000000004320000-0x000000000440A000-memory.dmp
memory/936-76-0x0000000000080000-0x00000000000AC000-memory.dmp
memory/1256-77-0x0000000004320000-0x000000000440A000-memory.dmp