Analysis Overview
SHA256
7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8
Threat Level: Known bad
The file 7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8 was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
RMS
Sets file to hidden
Executes dropped EXE
UPX packed file
Checks computer location settings
Loads dropped DLL
Adds Run key to start application
Drops file in System32 directory
Drops file in Windows directory
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious behavior: SetClipboardViewer
Suspicious behavior: EnumeratesProcesses
Runs .reg file with regedit
Suspicious use of SetWindowsHookEx
Views/modifies file attributes
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-04-20 14:21
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-04-20 14:21
Reported
2022-04-20 14:37
Platform
win7-20220414-en
Max time kernel
148s
Max time network
164s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe" | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Windows\\System64\\1rfusclient.exe, explorer.exe" | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe" | C:\Windows\System64\1rfusclient.exe | N/A |
RMS
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System64\1rfusclient.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rfusclient.exe | N/A |
| N/A | N/A | C:\Windows\System64\rfusclient.exe | N/A |
| N/A | N/A | C:\Windows\System64\rfusclient.exe | N/A |
Sets file to hidden
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
| N/A | N/A | C:\Windows\System64\1rfusclient.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run | C:\Windows\System64\1rfusclient.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\System64\rutserv.exe | C:\Windows\System64\1rfusclient.exe | N/A |
| File created | C:\Windows\System64\vp8decoder.dll | C:\Windows\System64\1rfusclient.exe | N/A |
| File opened for modification | C:\Windows\System64\1rfusclient.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
| File opened for modification | C:\Windows\System64\vp8decoder.dll | C:\Windows\SysWOW64\attrib.exe | N/A |
| File opened for modification | C:\Windows\System64\1rfusclient.exe | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
| File created | C:\Windows\Zont911\Regedit.reg | C:\Windows\System64\1rfusclient.exe | N/A |
| File created | C:\Windows\Zont911\hostbb.zip | C:\Windows\System64\1rfusclient.exe | N/A |
| File created | C:\Windows\System64\rfusclient.exe | C:\Windows\System64\1rfusclient.exe | N/A |
| File opened for modification | C:\Windows\System64\Logs\rms_log_2022-04.html | C:\Windows\System64\rutserv.exe | N/A |
| File created | C:\Windows\Zont911\Tupe.bat | C:\Windows\System64\1rfusclient.exe | N/A |
| File created | C:\Windows\System64\Logs\rms_log_2022-04.html | C:\Windows\System64\rutserv.exe | N/A |
| File opened for modification | C:\Windows\System64 | C:\Windows\SysWOW64\attrib.exe | N/A |
| File opened for modification | C:\Windows\System64\rfusclient.exe | C:\Windows\System64\1rfusclient.exe | N/A |
| File opened for modification | C:\Windows\System64\rutserv.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
| File opened for modification | C:\Windows\System64\vp8encoder.dll | C:\Windows\SysWOW64\attrib.exe | N/A |
| File opened for modification | C:\Windows\System64\vp8encoder.dll | C:\Windows\System64\1rfusclient.exe | N/A |
| File opened for modification | C:\Windows\System64\rfusclient.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
| File created | C:\Windows\System64\1rfusclient.exe | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
| File opened for modification | C:\Windows\System64\rutserv.exe | C:\Windows\System64\1rfusclient.exe | N/A |
| File opened for modification | C:\Windows\System64\vp8decoder.dll | C:\Windows\System64\1rfusclient.exe | N/A |
| File created | C:\Windows\System64\vp8encoder.dll | C:\Windows\System64\1rfusclient.exe | N/A |
Enumerates physical storage devices
Runs .reg file with regedit
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regedit.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: SetClipboardViewer
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System64\rfusclient.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\System64\rutserv.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System64\rutserv.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Windows\System64\rutserv.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\System64\rutserv.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\System64\rutserv.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe
"C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe"
C:\Windows\System64\1rfusclient.exe
"C:\Windows\System64\1rfusclient.exe"
C:\Windows\SysWOW64\regedit.exe
"C:\Windows\System32\regedit.exe" /s "C:\Windows\Zont911\Regedit.reg"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Windows\Zont911\Tupe.bat" "
C:\Windows\SysWOW64\chcp.com
Chcp 1251
C:\Windows\System64\rutserv.exe
"C:\Windows\System64\rutserv.exe" /silentinstall
C:\Windows\System64\rutserv.exe
"C:\Windows\System64\rutserv.exe" /firewall
C:\Windows\System64\rutserv.exe
"C:\Windows\System64\rutserv.exe" /start
C:\Windows\System64\rutserv.exe
C:\Windows\System64\rutserv.exe
C:\Windows\System64\rfusclient.exe
C:\Windows\System64\rfusclient.exe
C:\Windows\System64\rfusclient.exe
C:\Windows\System64\rfusclient.exe /tray
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\System64\*.*" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\System64" +s +h
C:\Windows\System64\rfusclient.exe
C:\Windows\System64\rfusclient.exe /tray
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | rmansys.ru | udp |
| RU | 31.31.198.18:80 | rmansys.ru | tcp |
| RU | 31.31.198.18:80 | rmansys.ru | tcp |
| US | 8.8.8.8:53 | rms-server.tektonit.ru | udp |
| RU | 95.213.205.83:5655 | rms-server.tektonit.ru | tcp |
Files
memory/1700-54-0x00000000753B1000-0x00000000753B3000-memory.dmp
\Windows\System64\1rfusclient.exe
| MD5 | 1bb13a8dc3f7047507644e2554a3ed1c |
| SHA1 | 01f11194e7c1bd6895213da9d3424b31994cb016 |
| SHA256 | 7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8 |
| SHA512 | 57bace1d7b712aa21f49bf9958ace981e909976f9d9b1e9fd75d7a20741491d1ba2c2ce505ba63e66f2861b1584833c268a795aa54dde7ba670b4284248d93ca |
memory/1904-57-0x0000000000000000-mapping.dmp
\Windows\System64\1rfusclient.exe
| MD5 | 1bb13a8dc3f7047507644e2554a3ed1c |
| SHA1 | 01f11194e7c1bd6895213da9d3424b31994cb016 |
| SHA256 | 7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8 |
| SHA512 | 57bace1d7b712aa21f49bf9958ace981e909976f9d9b1e9fd75d7a20741491d1ba2c2ce505ba63e66f2861b1584833c268a795aa54dde7ba670b4284248d93ca |
C:\Windows\System64\1rfusclient.exe
| MD5 | 1bb13a8dc3f7047507644e2554a3ed1c |
| SHA1 | 01f11194e7c1bd6895213da9d3424b31994cb016 |
| SHA256 | 7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8 |
| SHA512 | 57bace1d7b712aa21f49bf9958ace981e909976f9d9b1e9fd75d7a20741491d1ba2c2ce505ba63e66f2861b1584833c268a795aa54dde7ba670b4284248d93ca |
C:\Windows\System64\1rfusclient.exe
| MD5 | 1bb13a8dc3f7047507644e2554a3ed1c |
| SHA1 | 01f11194e7c1bd6895213da9d3424b31994cb016 |
| SHA256 | 7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8 |
| SHA512 | 57bace1d7b712aa21f49bf9958ace981e909976f9d9b1e9fd75d7a20741491d1ba2c2ce505ba63e66f2861b1584833c268a795aa54dde7ba670b4284248d93ca |
\Windows\System64\1rfusclient.exe
| MD5 | 1bb13a8dc3f7047507644e2554a3ed1c |
| SHA1 | 01f11194e7c1bd6895213da9d3424b31994cb016 |
| SHA256 | 7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8 |
| SHA512 | 57bace1d7b712aa21f49bf9958ace981e909976f9d9b1e9fd75d7a20741491d1ba2c2ce505ba63e66f2861b1584833c268a795aa54dde7ba670b4284248d93ca |
memory/2008-62-0x0000000000000000-mapping.dmp
C:\Windows\Zont911\Regedit.reg
| MD5 | b8b5df7bd66996fb97cf2f80f866a7b1 |
| SHA1 | 2fca802b31d0074f5ab68a45854fa3bbdf2603db |
| SHA256 | e7878603265c8d6d0fa092a5b5ee3755380ed33216a8836d80dc49cac92366d2 |
| SHA512 | af6b9409b7a902f64073d0b39163d6d71cbe11f9063b2ea7dc926c235acb9a500fe7f3776b39d442e3e8817ecd1a8b1fdac3811c4e740c4125d52c47fd4d1546 |
memory/1976-65-0x0000000000000000-mapping.dmp
C:\Windows\Zont911\Tupe.bat
| MD5 | 10cb21f5d07a83f4c3d66974cbc2cf79 |
| SHA1 | 08e325ec7e92c3e3b9b7eb605ff6a8d9e4596f57 |
| SHA256 | 58474de64432e063c41c427119b46d8aba84c13b067b52073f9e9863a963963a |
| SHA512 | 689ff96b0561bfe5a72bbc83ca190394ab7e76d1280595c8233463c92218610f25c3223ce1bd52e14073ca9bb5d28d239119427b98da70bb32063eb223374b8c |
memory/896-67-0x0000000000000000-mapping.dmp
C:\Windows\System64\rfusclient.exe
| MD5 | eac85a4a79a168cb47c0810e23e6d2fe |
| SHA1 | 0e053ed568dc2f07d76b0e006a9e19655797b89e |
| SHA256 | 86b9593479937ca7dfe9ef6744cc321808c0585b63312cb50952f709c498096f |
| SHA512 | b424136d58d266ba045a2ad95efeb8cdc69d77a9442521bf196390b934a7752bf728daeaf2fb3df887abf9c719a2526a8179e368cb228603b9243e3c7148c8e0 |
\Windows\System64\rutserv.exe
| MD5 | fa4b26c53cfb2661ba072cf8da181b1a |
| SHA1 | 295f19aad28e80c5e371078989815c612110229c |
| SHA256 | 3a92288781a1f411f43e59ae32ea78b89997e7a5d1b6f12771f39fb6fa345db7 |
| SHA512 | f6399c683c41f518a1096c87303758d50d6419e62317bfe2d362f66e5048f81583be12b32348dc095a34c0de0a79867376fdb8fc4677080d665e001b38cbfa64 |
memory/784-71-0x0000000000000000-mapping.dmp
C:\Windows\System64\rutserv.exe
| MD5 | fa4b26c53cfb2661ba072cf8da181b1a |
| SHA1 | 295f19aad28e80c5e371078989815c612110229c |
| SHA256 | 3a92288781a1f411f43e59ae32ea78b89997e7a5d1b6f12771f39fb6fa345db7 |
| SHA512 | f6399c683c41f518a1096c87303758d50d6419e62317bfe2d362f66e5048f81583be12b32348dc095a34c0de0a79867376fdb8fc4677080d665e001b38cbfa64 |
C:\Windows\System64\rutserv.exe
| MD5 | fa4b26c53cfb2661ba072cf8da181b1a |
| SHA1 | 295f19aad28e80c5e371078989815c612110229c |
| SHA256 | 3a92288781a1f411f43e59ae32ea78b89997e7a5d1b6f12771f39fb6fa345db7 |
| SHA512 | f6399c683c41f518a1096c87303758d50d6419e62317bfe2d362f66e5048f81583be12b32348dc095a34c0de0a79867376fdb8fc4677080d665e001b38cbfa64 |
memory/1168-74-0x0000000000000000-mapping.dmp
C:\Windows\System64\rutserv.exe
| MD5 | fa4b26c53cfb2661ba072cf8da181b1a |
| SHA1 | 295f19aad28e80c5e371078989815c612110229c |
| SHA256 | 3a92288781a1f411f43e59ae32ea78b89997e7a5d1b6f12771f39fb6fa345db7 |
| SHA512 | f6399c683c41f518a1096c87303758d50d6419e62317bfe2d362f66e5048f81583be12b32348dc095a34c0de0a79867376fdb8fc4677080d665e001b38cbfa64 |
memory/844-77-0x0000000000000000-mapping.dmp
C:\Windows\System64\rutserv.exe
| MD5 | fa4b26c53cfb2661ba072cf8da181b1a |
| SHA1 | 295f19aad28e80c5e371078989815c612110229c |
| SHA256 | 3a92288781a1f411f43e59ae32ea78b89997e7a5d1b6f12771f39fb6fa345db7 |
| SHA512 | f6399c683c41f518a1096c87303758d50d6419e62317bfe2d362f66e5048f81583be12b32348dc095a34c0de0a79867376fdb8fc4677080d665e001b38cbfa64 |
C:\Windows\System64\rutserv.exe
| MD5 | fa4b26c53cfb2661ba072cf8da181b1a |
| SHA1 | 295f19aad28e80c5e371078989815c612110229c |
| SHA256 | 3a92288781a1f411f43e59ae32ea78b89997e7a5d1b6f12771f39fb6fa345db7 |
| SHA512 | f6399c683c41f518a1096c87303758d50d6419e62317bfe2d362f66e5048f81583be12b32348dc095a34c0de0a79867376fdb8fc4677080d665e001b38cbfa64 |
C:\Windows\System64\vp8encoder.dll
| MD5 | dab4646806dfca6d0e0b4d80fa9209d6 |
| SHA1 | 8244dfe22ec2090eee89dad103e6b2002059d16a |
| SHA256 | cb6ef96d3a66ef08ec2c8640b751a52d6d4f4530cf01162a69966f0fd5153587 |
| SHA512 | aa5eb93bf23a10de797d6fb52a55a95d36bc48927c76fedd81e0c48872745cb7f7d1b3f230eaae42fd4e79b6a59ca707e56bd6963b03644cbd5984f11e98d6e7 |
C:\Windows\System64\vp8decoder.dll
| MD5 | d43fa82fab5337ce20ad14650085c5d9 |
| SHA1 | 678aa092075ff65b6815ffc2d8fdc23af8425981 |
| SHA256 | c022958429edd94bfe31f2eacfe24ff6b45d6f12747725c449a36116373de03b |
| SHA512 | 103e61a9f58df03316676a074487e50ec518479c11068df3736df139b85c7671048c65bce0ef2c55b3c50c61fde54e9e6c7d1b795aea71263ae94c91d4874e0d |
\Windows\System64\rfusclient.exe
| MD5 | eac85a4a79a168cb47c0810e23e6d2fe |
| SHA1 | 0e053ed568dc2f07d76b0e006a9e19655797b89e |
| SHA256 | 86b9593479937ca7dfe9ef6744cc321808c0585b63312cb50952f709c498096f |
| SHA512 | b424136d58d266ba045a2ad95efeb8cdc69d77a9442521bf196390b934a7752bf728daeaf2fb3df887abf9c719a2526a8179e368cb228603b9243e3c7148c8e0 |
memory/1888-85-0x0000000000000000-mapping.dmp
\Windows\System64\rfusclient.exe
| MD5 | eac85a4a79a168cb47c0810e23e6d2fe |
| SHA1 | 0e053ed568dc2f07d76b0e006a9e19655797b89e |
| SHA256 | 86b9593479937ca7dfe9ef6744cc321808c0585b63312cb50952f709c498096f |
| SHA512 | b424136d58d266ba045a2ad95efeb8cdc69d77a9442521bf196390b934a7752bf728daeaf2fb3df887abf9c719a2526a8179e368cb228603b9243e3c7148c8e0 |
memory/1132-87-0x0000000000000000-mapping.dmp
C:\Windows\System64\rfusclient.exe
| MD5 | eac85a4a79a168cb47c0810e23e6d2fe |
| SHA1 | 0e053ed568dc2f07d76b0e006a9e19655797b89e |
| SHA256 | 86b9593479937ca7dfe9ef6744cc321808c0585b63312cb50952f709c498096f |
| SHA512 | b424136d58d266ba045a2ad95efeb8cdc69d77a9442521bf196390b934a7752bf728daeaf2fb3df887abf9c719a2526a8179e368cb228603b9243e3c7148c8e0 |
C:\Windows\System64\rfusclient.exe
| MD5 | eac85a4a79a168cb47c0810e23e6d2fe |
| SHA1 | 0e053ed568dc2f07d76b0e006a9e19655797b89e |
| SHA256 | 86b9593479937ca7dfe9ef6744cc321808c0585b63312cb50952f709c498096f |
| SHA512 | b424136d58d266ba045a2ad95efeb8cdc69d77a9442521bf196390b934a7752bf728daeaf2fb3df887abf9c719a2526a8179e368cb228603b9243e3c7148c8e0 |
memory/1444-92-0x0000000000000000-mapping.dmp
memory/1116-93-0x0000000000000000-mapping.dmp
memory/1624-94-0x0000000000000000-mapping.dmp
C:\Windows\System64\rfusclient.exe
| MD5 | eac85a4a79a168cb47c0810e23e6d2fe |
| SHA1 | 0e053ed568dc2f07d76b0e006a9e19655797b89e |
| SHA256 | 86b9593479937ca7dfe9ef6744cc321808c0585b63312cb50952f709c498096f |
| SHA512 | b424136d58d266ba045a2ad95efeb8cdc69d77a9442521bf196390b934a7752bf728daeaf2fb3df887abf9c719a2526a8179e368cb228603b9243e3c7148c8e0 |
Analysis: behavioral2
Detonation Overview
Submitted
2022-04-20 14:21
Reported
2022-04-20 14:38
Platform
win10v2004-20220414-en
Max time kernel
149s
Max time network
164s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe" | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Windows\\System64\\1rfusclient.exe, explorer.exe" | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe" | C:\Windows\System64\1rfusclient.exe | N/A |
RMS
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System64\1rfusclient.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rfusclient.exe | N/A |
| N/A | N/A | C:\Windows\System64\rfusclient.exe | N/A |
| N/A | N/A | C:\Windows\System64\rfusclient.exe | N/A |
Sets file to hidden
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 |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation | C:\Windows\System64\1rfusclient.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows\CurrentVersion\Run | C:\Windows\System64\1rfusclient.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows\CurrentVersion\Run | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\symbols\exe\rutserv.pdb | C:\Windows\System64\rutserv.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\rutserv.pdb | C:\Windows\System64\rutserv.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\exe\rutserv.pdb | C:\Windows\System64\rutserv.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\System64\rfusclient.exe | C:\Windows\System64\1rfusclient.exe | N/A |
| File opened for modification | C:\Windows\System64\rutserv.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
| File opened for modification | C:\Windows\System64 | C:\Windows\SysWOW64\attrib.exe | N/A |
| File opened for modification | C:\Windows\System64\rutserv.pdb | C:\Windows\System64\rutserv.exe | N/A |
| File opened for modification | C:\Windows\System64\Logs\rms_log_2022-04.html | C:\Windows\System64\rutserv.exe | N/A |
| File created | C:\Windows\System64\1rfusclient.exe | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
| File created | C:\Windows\Zont911\hostbb.zip | C:\Windows\System64\1rfusclient.exe | N/A |
| File created | C:\Windows\System64\vp8decoder.dll | C:\Windows\System64\1rfusclient.exe | N/A |
| File created | C:\Windows\System64\vp8encoder.dll | C:\Windows\System64\1rfusclient.exe | N/A |
| File opened for modification | C:\Windows\System64\vp8encoder.dll | C:\Windows\System64\1rfusclient.exe | N/A |
| File created | C:\Windows\Zont911\Tupe.bat | C:\Windows\System64\1rfusclient.exe | N/A |
| File opened for modification | C:\Windows\System64\vp8encoder.dll | C:\Windows\SysWOW64\attrib.exe | N/A |
| File created | C:\Windows\Zont911\Regedit.reg | C:\Windows\System64\1rfusclient.exe | N/A |
| File created | C:\Windows\System64\rfusclient.exe | C:\Windows\System64\1rfusclient.exe | N/A |
| File opened for modification | C:\Windows\System64\rutserv.exe | C:\Windows\System64\1rfusclient.exe | N/A |
| File opened for modification | C:\Windows\System64\1rfusclient.exe | C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe | N/A |
| File created | C:\Windows\System64\rutserv.exe | C:\Windows\System64\1rfusclient.exe | N/A |
| File opened for modification | C:\Windows\System64\vp8decoder.dll | C:\Windows\System64\1rfusclient.exe | N/A |
| File created | C:\Windows\System64\Logs\rms_log_2022-04.html | C:\Windows\System64\rutserv.exe | N/A |
| File opened for modification | C:\Windows\System64\1rfusclient.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
| File opened for modification | C:\Windows\System64\rfusclient.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
| File opened for modification | C:\Windows\System64\vp8decoder.dll | C:\Windows\SysWOW64\attrib.exe | N/A |
Enumerates physical storage devices
Runs .reg file with regedit
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regedit.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: SetClipboardViewer
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System64\rfusclient.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\System64\rutserv.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System64\rutserv.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Windows\System64\rutserv.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\System64\rutserv.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\System64\rutserv.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
| N/A | N/A | C:\Windows\System64\rutserv.exe | N/A |
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe
"C:\Users\Admin\AppData\Local\Temp\7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8.exe"
C:\Windows\System64\1rfusclient.exe
"C:\Windows\System64\1rfusclient.exe"
C:\Windows\SysWOW64\regedit.exe
"C:\Windows\System32\regedit.exe" /s "C:\Windows\Zont911\Regedit.reg"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Windows\Zont911\Tupe.bat" "
C:\Windows\SysWOW64\chcp.com
Chcp 1251
C:\Windows\System64\rutserv.exe
"C:\Windows\System64\rutserv.exe" /silentinstall
C:\Windows\System64\rutserv.exe
"C:\Windows\System64\rutserv.exe" /firewall
C:\Windows\System64\rutserv.exe
"C:\Windows\System64\rutserv.exe" /start
C:\Windows\System64\rutserv.exe
C:\Windows\System64\rutserv.exe
C:\Windows\System64\rfusclient.exe
C:\Windows\System64\rfusclient.exe
C:\Windows\System64\rfusclient.exe
C:\Windows\System64\rfusclient.exe /tray
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\System64\*.*" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\System64" +s +h
C:\Windows\System64\rfusclient.exe
C:\Windows\System64\rfusclient.exe /tray
Network
| Country | Destination | Domain | Proto |
| US | 142.4.113.7:80 | tcp | |
| IE | 20.54.89.15:443 | tcp | |
| NL | 104.97.14.81:80 | tcp | |
| US | 8.8.8.8:53 | rmansys.ru | udp |
| RU | 31.31.198.18:80 | rmansys.ru | tcp |
| RU | 31.31.198.18:80 | rmansys.ru | tcp |
| US | 8.8.8.8:53 | rms-server.tektonit.ru | udp |
| RU | 95.213.205.83:5655 | rms-server.tektonit.ru | tcp |
| NL | 178.79.208.1:80 | tcp | |
| US | 8.8.8.8:53 | storesdk.dsx.mp.microsoft.com | udp |
| FR | 2.18.109.224:443 | storesdk.dsx.mp.microsoft.com | tcp |
| US | 8.8.8.8:53 | 96.108.152.52.in-addr.arpa | udp |
| RU | 95.213.205.83:563 | rms-server.tektonit.ru | tcp |
Files
C:\Windows\System64\1rfusclient.exe
| MD5 | 1bb13a8dc3f7047507644e2554a3ed1c |
| SHA1 | 01f11194e7c1bd6895213da9d3424b31994cb016 |
| SHA256 | 7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8 |
| SHA512 | 57bace1d7b712aa21f49bf9958ace981e909976f9d9b1e9fd75d7a20741491d1ba2c2ce505ba63e66f2861b1584833c268a795aa54dde7ba670b4284248d93ca |
memory/2180-130-0x0000000000000000-mapping.dmp
C:\Windows\System64\1rfusclient.exe
| MD5 | 1bb13a8dc3f7047507644e2554a3ed1c |
| SHA1 | 01f11194e7c1bd6895213da9d3424b31994cb016 |
| SHA256 | 7a333a9533b7b791e250cb6c1b8888443067abc4f7753b3fe93a233f691941d8 |
| SHA512 | 57bace1d7b712aa21f49bf9958ace981e909976f9d9b1e9fd75d7a20741491d1ba2c2ce505ba63e66f2861b1584833c268a795aa54dde7ba670b4284248d93ca |
memory/4924-133-0x0000000000000000-mapping.dmp
C:\Windows\Zont911\Regedit.reg
| MD5 | b8b5df7bd66996fb97cf2f80f866a7b1 |
| SHA1 | 2fca802b31d0074f5ab68a45854fa3bbdf2603db |
| SHA256 | e7878603265c8d6d0fa092a5b5ee3755380ed33216a8836d80dc49cac92366d2 |
| SHA512 | af6b9409b7a902f64073d0b39163d6d71cbe11f9063b2ea7dc926c235acb9a500fe7f3776b39d442e3e8817ecd1a8b1fdac3811c4e740c4125d52c47fd4d1546 |
memory/1108-135-0x0000000000000000-mapping.dmp
C:\Windows\Zont911\Tupe.bat
| MD5 | 10cb21f5d07a83f4c3d66974cbc2cf79 |
| SHA1 | 08e325ec7e92c3e3b9b7eb605ff6a8d9e4596f57 |
| SHA256 | 58474de64432e063c41c427119b46d8aba84c13b067b52073f9e9863a963963a |
| SHA512 | 689ff96b0561bfe5a72bbc83ca190394ab7e76d1280595c8233463c92218610f25c3223ce1bd52e14073ca9bb5d28d239119427b98da70bb32063eb223374b8c |
memory/4748-137-0x0000000000000000-mapping.dmp
C:\Windows\System64\rfusclient.exe
| MD5 | eac85a4a79a168cb47c0810e23e6d2fe |
| SHA1 | 0e053ed568dc2f07d76b0e006a9e19655797b89e |
| SHA256 | 86b9593479937ca7dfe9ef6744cc321808c0585b63312cb50952f709c498096f |
| SHA512 | b424136d58d266ba045a2ad95efeb8cdc69d77a9442521bf196390b934a7752bf728daeaf2fb3df887abf9c719a2526a8179e368cb228603b9243e3c7148c8e0 |
C:\Windows\System64\rutserv.exe
| MD5 | fa4b26c53cfb2661ba072cf8da181b1a |
| SHA1 | 295f19aad28e80c5e371078989815c612110229c |
| SHA256 | 3a92288781a1f411f43e59ae32ea78b89997e7a5d1b6f12771f39fb6fa345db7 |
| SHA512 | f6399c683c41f518a1096c87303758d50d6419e62317bfe2d362f66e5048f81583be12b32348dc095a34c0de0a79867376fdb8fc4677080d665e001b38cbfa64 |
memory/4704-139-0x0000000000000000-mapping.dmp
C:\Windows\System64\rutserv.exe
| MD5 | fa4b26c53cfb2661ba072cf8da181b1a |
| SHA1 | 295f19aad28e80c5e371078989815c612110229c |
| SHA256 | 3a92288781a1f411f43e59ae32ea78b89997e7a5d1b6f12771f39fb6fa345db7 |
| SHA512 | f6399c683c41f518a1096c87303758d50d6419e62317bfe2d362f66e5048f81583be12b32348dc095a34c0de0a79867376fdb8fc4677080d665e001b38cbfa64 |
memory/2660-142-0x0000000000000000-mapping.dmp
C:\Windows\System64\rutserv.exe
| MD5 | fa4b26c53cfb2661ba072cf8da181b1a |
| SHA1 | 295f19aad28e80c5e371078989815c612110229c |
| SHA256 | 3a92288781a1f411f43e59ae32ea78b89997e7a5d1b6f12771f39fb6fa345db7 |
| SHA512 | f6399c683c41f518a1096c87303758d50d6419e62317bfe2d362f66e5048f81583be12b32348dc095a34c0de0a79867376fdb8fc4677080d665e001b38cbfa64 |
memory/1944-144-0x0000000000000000-mapping.dmp
C:\Windows\System64\rutserv.exe
| MD5 | fa4b26c53cfb2661ba072cf8da181b1a |
| SHA1 | 295f19aad28e80c5e371078989815c612110229c |
| SHA256 | 3a92288781a1f411f43e59ae32ea78b89997e7a5d1b6f12771f39fb6fa345db7 |
| SHA512 | f6399c683c41f518a1096c87303758d50d6419e62317bfe2d362f66e5048f81583be12b32348dc095a34c0de0a79867376fdb8fc4677080d665e001b38cbfa64 |
C:\Windows\System64\rutserv.exe
| MD5 | fa4b26c53cfb2661ba072cf8da181b1a |
| SHA1 | 295f19aad28e80c5e371078989815c612110229c |
| SHA256 | 3a92288781a1f411f43e59ae32ea78b89997e7a5d1b6f12771f39fb6fa345db7 |
| SHA512 | f6399c683c41f518a1096c87303758d50d6419e62317bfe2d362f66e5048f81583be12b32348dc095a34c0de0a79867376fdb8fc4677080d665e001b38cbfa64 |
C:\Windows\System64\vp8decoder.dll
| MD5 | d43fa82fab5337ce20ad14650085c5d9 |
| SHA1 | 678aa092075ff65b6815ffc2d8fdc23af8425981 |
| SHA256 | c022958429edd94bfe31f2eacfe24ff6b45d6f12747725c449a36116373de03b |
| SHA512 | 103e61a9f58df03316676a074487e50ec518479c11068df3736df139b85c7671048c65bce0ef2c55b3c50c61fde54e9e6c7d1b795aea71263ae94c91d4874e0d |
C:\Windows\System64\vp8encoder.dll
| MD5 | dab4646806dfca6d0e0b4d80fa9209d6 |
| SHA1 | 8244dfe22ec2090eee89dad103e6b2002059d16a |
| SHA256 | cb6ef96d3a66ef08ec2c8640b751a52d6d4f4530cf01162a69966f0fd5153587 |
| SHA512 | aa5eb93bf23a10de797d6fb52a55a95d36bc48927c76fedd81e0c48872745cb7f7d1b3f230eaae42fd4e79b6a59ca707e56bd6963b03644cbd5984f11e98d6e7 |
memory/4996-149-0x0000000000000000-mapping.dmp
memory/5116-150-0x0000000000000000-mapping.dmp
C:\Windows\System64\rfusclient.exe
| MD5 | eac85a4a79a168cb47c0810e23e6d2fe |
| SHA1 | 0e053ed568dc2f07d76b0e006a9e19655797b89e |
| SHA256 | 86b9593479937ca7dfe9ef6744cc321808c0585b63312cb50952f709c498096f |
| SHA512 | b424136d58d266ba045a2ad95efeb8cdc69d77a9442521bf196390b934a7752bf728daeaf2fb3df887abf9c719a2526a8179e368cb228603b9243e3c7148c8e0 |
C:\Windows\System64\rfusclient.exe
| MD5 | eac85a4a79a168cb47c0810e23e6d2fe |
| SHA1 | 0e053ed568dc2f07d76b0e006a9e19655797b89e |
| SHA256 | 86b9593479937ca7dfe9ef6744cc321808c0585b63312cb50952f709c498096f |
| SHA512 | b424136d58d266ba045a2ad95efeb8cdc69d77a9442521bf196390b934a7752bf728daeaf2fb3df887abf9c719a2526a8179e368cb228603b9243e3c7148c8e0 |
memory/5012-153-0x0000000000000000-mapping.dmp
memory/5016-154-0x0000000000000000-mapping.dmp
memory/1712-155-0x0000000000000000-mapping.dmp
C:\Windows\System64\rfusclient.exe
| MD5 | eac85a4a79a168cb47c0810e23e6d2fe |
| SHA1 | 0e053ed568dc2f07d76b0e006a9e19655797b89e |
| SHA256 | 86b9593479937ca7dfe9ef6744cc321808c0585b63312cb50952f709c498096f |
| SHA512 | b424136d58d266ba045a2ad95efeb8cdc69d77a9442521bf196390b934a7752bf728daeaf2fb3df887abf9c719a2526a8179e368cb228603b9243e3c7148c8e0 |