Analysis Overview
SHA256
3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca
Threat Level: Known bad
The file 3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca was found to be: Known bad.
Malicious Activity Summary
BitRAT Payload
BitRAT
UPX packed file
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Looks up external IP address via web service
Adds Run key to start application
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Enumerates physical storage devices
Program crash
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-05-08 06:35
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-05-08 06:35
Reported
2022-05-08 09:24
Platform
win7-20220414-en
Max time kernel
169s
Max time network
201s
Command Line
Signatures
BitRAT
BitRAT Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
UPX packed file
| 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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Ojtkmq = "C:\\Users\\Admin\\AppData\\Roaming\\Fehulu\\Ojtkmq.url" | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | myexternalip.com | N/A | N/A |
| N/A | myexternalip.com | N/A | N/A |
| N/A | myexternalip.com | N/A | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2032 set thread context of 1920 | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe |
| PID 2032 set thread context of 1156 | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca.exe
"C:\Users\Admin\AppData\Local\Temp\3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca.exe"
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
"C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
"C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
Network
| Country | Destination | Domain | Proto |
| DE | 79.134.225.99:4898 | tcp | |
| US | 8.8.8.8:53 | myexternalip.com | udp |
| US | 34.117.59.81:443 | myexternalip.com | tcp |
| DE | 79.134.225.99:4898 | tcp | |
| US | 34.117.59.81:443 | myexternalip.com | tcp |
Files
memory/1004-54-0x0000000000C10000-0x0000000000E3A000-memory.dmp
memory/1004-55-0x0000000075F21000-0x0000000075F23000-memory.dmp
memory/1004-56-0x0000000000950000-0x000000000095A000-memory.dmp
memory/1004-57-0x0000000004630000-0x0000000004696000-memory.dmp
\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
| MD5 | b2feac6aa6a89365b3f010a0cd34147d |
| SHA1 | 2faf499f54dbeb1dd46ab018b9f31b566711c432 |
| SHA256 | 3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca |
| SHA512 | d96bf8aebfc1467d0380f41652e98a56b39f8252843b29024b69d7ad44121ab876fea5d752a49b9b6f5cf24e2d791ececdc7d50092e7f2d7ab1586fd97742349 |
memory/2032-59-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
| MD5 | b2feac6aa6a89365b3f010a0cd34147d |
| SHA1 | 2faf499f54dbeb1dd46ab018b9f31b566711c432 |
| SHA256 | 3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca |
| SHA512 | d96bf8aebfc1467d0380f41652e98a56b39f8252843b29024b69d7ad44121ab876fea5d752a49b9b6f5cf24e2d791ececdc7d50092e7f2d7ab1586fd97742349 |
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
| MD5 | b2feac6aa6a89365b3f010a0cd34147d |
| SHA1 | 2faf499f54dbeb1dd46ab018b9f31b566711c432 |
| SHA256 | 3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca |
| SHA512 | d96bf8aebfc1467d0380f41652e98a56b39f8252843b29024b69d7ad44121ab876fea5d752a49b9b6f5cf24e2d791ececdc7d50092e7f2d7ab1586fd97742349 |
memory/2032-62-0x0000000000AB0000-0x0000000000CDA000-memory.dmp
memory/2032-64-0x00000000022E0000-0x0000000002346000-memory.dmp
memory/1920-65-0x0000000000400000-0x0000000000412000-memory.dmp
memory/1920-66-0x0000000000400000-0x0000000000412000-memory.dmp
memory/1920-68-0x0000000000400000-0x0000000000412000-memory.dmp
memory/1920-69-0x0000000000400000-0x0000000000412000-memory.dmp
memory/1920-70-0x0000000000400000-0x0000000000412000-memory.dmp
memory/1920-71-0x000000000040DA1E-mapping.dmp
memory/1920-73-0x0000000000400000-0x0000000000412000-memory.dmp
memory/1920-75-0x0000000000400000-0x0000000000412000-memory.dmp
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
| MD5 | b2feac6aa6a89365b3f010a0cd34147d |
| SHA1 | 2faf499f54dbeb1dd46ab018b9f31b566711c432 |
| SHA256 | 3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca |
| SHA512 | d96bf8aebfc1467d0380f41652e98a56b39f8252843b29024b69d7ad44121ab876fea5d752a49b9b6f5cf24e2d791ececdc7d50092e7f2d7ab1586fd97742349 |
memory/1920-78-0x0000000000200000-0x000000000020A000-memory.dmp
C:\Users\Admin\AppData\Roaming\Fehulu\Ojtkmq.url
| MD5 | 1745f298ce618adb5c667e42b2e1b5c9 |
| SHA1 | 66ab7e9f4dc3780fcc0b6d0ee31cb0259f2d2060 |
| SHA256 | 9bcd11157e69126e6b191cfaee6e51104b364347fe6a20dcb64bce8bc47a1b74 |
| SHA512 | 13bf2e06b196eb914c693ee28b9d7c03932026760f163248ca129f30178b1054d1bc6e99294e180d1b7ae1656f062a5ebaca6ef10ce8f189d8afb8dc67df094c |
memory/1156-80-0x0000000000400000-0x0000000000807000-memory.dmp
memory/1156-81-0x0000000000400000-0x0000000000807000-memory.dmp
memory/1156-83-0x0000000000400000-0x0000000000807000-memory.dmp
memory/1156-85-0x0000000000805D30-mapping.dmp
memory/1156-84-0x0000000000400000-0x0000000000807000-memory.dmp
memory/1156-87-0x0000000000400000-0x0000000000807000-memory.dmp
memory/1156-86-0x0000000000400000-0x0000000000807000-memory.dmp
memory/1156-90-0x0000000000400000-0x0000000000807000-memory.dmp
memory/1156-91-0x0000000000400000-0x0000000000807000-memory.dmp
memory/1156-92-0x0000000000400000-0x0000000000807000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-05-08 06:35
Reported
2022-05-08 09:23
Platform
win10v2004-20220414-en
Max time kernel
151s
Max time network
156s
Command Line
Signatures
BitRAT
BitRAT Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
UPX packed file
| 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 |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Ojtkmq = "C:\\Users\\Admin\\AppData\\Roaming\\Fehulu\\Ojtkmq.url" | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | myexternalip.com | N/A | N/A |
| N/A | myexternalip.com | N/A | N/A |
| N/A | myexternalip.com | N/A | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3676 set thread context of 4596 | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe |
| PID 3676 set thread context of 4864 | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe |
| PID 3676 set thread context of 4132 | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe |
| PID 3676 set thread context of 548 | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca.exe
"C:\Users\Admin\AppData\Local\Temp\3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca.exe"
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
"C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
"C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4596 -ip 4596
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4596 -s 152
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
"C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4132 -ip 4132
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4132 -s 152
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
Network
| Country | Destination | Domain | Proto |
| US | 20.189.173.10:443 | tcp | |
| US | 52.109.8.21:443 | tcp | |
| DE | 67.24.27.254:80 | tcp | |
| BE | 8.238.110.126:80 | tcp | |
| BE | 8.238.110.126:80 | tcp | |
| BE | 8.238.110.126:80 | tcp | |
| DE | 79.134.225.99:4898 | tcp | |
| US | 8.8.8.8:53 | myexternalip.com | udp |
| US | 34.117.59.81:443 | myexternalip.com | tcp |
| DE | 79.134.225.99:4898 | tcp | |
| US | 34.117.59.81:443 | myexternalip.com | tcp |
Files
memory/1316-130-0x0000000000CD0000-0x0000000000EFA000-memory.dmp
memory/1316-131-0x0000000005FB0000-0x0000000006554000-memory.dmp
memory/1316-132-0x0000000005910000-0x00000000059A2000-memory.dmp
memory/1316-133-0x00000000058B0000-0x00000000058BA000-memory.dmp
memory/3676-134-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
| MD5 | b2feac6aa6a89365b3f010a0cd34147d |
| SHA1 | 2faf499f54dbeb1dd46ab018b9f31b566711c432 |
| SHA256 | 3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca |
| SHA512 | d96bf8aebfc1467d0380f41652e98a56b39f8252843b29024b69d7ad44121ab876fea5d752a49b9b6f5cf24e2d791ececdc7d50092e7f2d7ab1586fd97742349 |
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
| MD5 | b2feac6aa6a89365b3f010a0cd34147d |
| SHA1 | 2faf499f54dbeb1dd46ab018b9f31b566711c432 |
| SHA256 | 3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca |
| SHA512 | d96bf8aebfc1467d0380f41652e98a56b39f8252843b29024b69d7ad44121ab876fea5d752a49b9b6f5cf24e2d791ececdc7d50092e7f2d7ab1586fd97742349 |
memory/3044-137-0x0000000000000000-mapping.dmp
memory/1772-138-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
| MD5 | b2feac6aa6a89365b3f010a0cd34147d |
| SHA1 | 2faf499f54dbeb1dd46ab018b9f31b566711c432 |
| SHA256 | 3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca |
| SHA512 | d96bf8aebfc1467d0380f41652e98a56b39f8252843b29024b69d7ad44121ab876fea5d752a49b9b6f5cf24e2d791ececdc7d50092e7f2d7ab1586fd97742349 |
memory/2952-140-0x0000000000000000-mapping.dmp
memory/4596-141-0x0000000000000000-mapping.dmp
memory/4596-142-0x0000000000400000-0x0000000000412000-memory.dmp
memory/396-143-0x0000000000000000-mapping.dmp
memory/4864-144-0x0000000000000000-mapping.dmp
memory/4864-147-0x0000000000400000-0x0000000000807000-memory.dmp
C:\Users\Admin\AppData\Roaming\Fehulu\Cavqm.exe
| MD5 | b2feac6aa6a89365b3f010a0cd34147d |
| SHA1 | 2faf499f54dbeb1dd46ab018b9f31b566711c432 |
| SHA256 | 3ac92596215d32932cf4e2c59cfed2665d23a5a5acd5c7355da04271132203ca |
| SHA512 | d96bf8aebfc1467d0380f41652e98a56b39f8252843b29024b69d7ad44121ab876fea5d752a49b9b6f5cf24e2d791ececdc7d50092e7f2d7ab1586fd97742349 |
memory/4864-145-0x0000000000400000-0x0000000000807000-memory.dmp
memory/4864-148-0x0000000000400000-0x0000000000807000-memory.dmp
memory/4864-149-0x0000000000400000-0x0000000000807000-memory.dmp
memory/4864-150-0x0000000000400000-0x0000000000807000-memory.dmp
memory/4132-151-0x0000000000000000-mapping.dmp
memory/1396-153-0x0000000000000000-mapping.dmp
memory/4788-154-0x0000000000000000-mapping.dmp
memory/548-155-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Fehulu\Ojtkmq.url
| MD5 | 1745f298ce618adb5c667e42b2e1b5c9 |
| SHA1 | 66ab7e9f4dc3780fcc0b6d0ee31cb0259f2d2060 |
| SHA256 | 9bcd11157e69126e6b191cfaee6e51104b364347fe6a20dcb64bce8bc47a1b74 |
| SHA512 | 13bf2e06b196eb914c693ee28b9d7c03932026760f163248ca129f30178b1054d1bc6e99294e180d1b7ae1656f062a5ebaca6ef10ce8f189d8afb8dc67df094c |