Analysis Overview
SHA256
97fcda2efb84505407d88da25d6c0d58371c57ed50be9ee1e9115746db247840
Threat Level: Known bad
The file Hack.exe was found to be: Known bad.
Malicious Activity Summary
Orcurs Rat Executable
Orcus
Orcus main payload
Orcus family
Orcurs Rat Executable
Checks computer location settings
Executes dropped EXE
Drops desktop.ini file(s)
Drops file in System32 directory
Drops file in Windows directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-20 09:14
Signatures
Orcurs Rat Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Orcus family
Orcus main payload
| 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
2024-02-20 09:14
Reported
2024-02-20 09:15
Platform
win7-20231215-en
Max time kernel
20s
Max time network
19s
Command Line
Signatures
Orcus
Orcus main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Orcurs Rat Executable
| 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:\Windows\system32\system31\loader.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\system31\loader.exe | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
| File opened for modification | C:\Windows\system32\system31\loader.exe | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
| File created | C:\Windows\system32\system31\loader.exe.config | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\Hack.exe
"C:\Users\Admin\AppData\Local\Temp\Hack.exe"
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\i7olcwlv.cmdline"
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES9982.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC9981.tmp"
C:\Windows\system32\system31\loader.exe
"C:\Windows\system32\system31\loader.exe"
Network
Files
memory/2164-1-0x0000000000180000-0x000000000018E000-memory.dmp
memory/2164-0-0x0000000000F10000-0x0000000000F6C000-memory.dmp
memory/2164-2-0x000007FEF5760000-0x000007FEF60FD000-memory.dmp
memory/2164-3-0x0000000000B90000-0x0000000000C10000-memory.dmp
memory/2164-4-0x000007FEF5760000-0x000007FEF60FD000-memory.dmp
\??\c:\Users\Admin\AppData\Local\Temp\i7olcwlv.cmdline
| MD5 | c514e044a7ad09fdb99f70d500c53201 |
| SHA1 | f78e8bb7937be47a284d8d34e81c5d79028bc9e6 |
| SHA256 | c5d3fdde2a563e64c16fe0a80700143b483196ef029a4469701286c7b1a42f96 |
| SHA512 | d863b839d8ead1e610cbb2c4fb4a1cc4fa4eb595ba7a82cd71ee9a1db9cd0294ccb4372c66ce6cdd9f1044c156b9bf919515bea4832ebb5c36303f6367859c1a |
\??\c:\Users\Admin\AppData\Local\Temp\i7olcwlv.0.cs
| MD5 | 2b14ae8b54d216abf4d228493ceca44a |
| SHA1 | d134351498e4273e9d6391153e35416bc743adef |
| SHA256 | 4e1cc3da1f7bf92773aae6cffa6d61bfc3e25aead3ad947f6215f93a053f346c |
| SHA512 | 5761b605add10ae3ef80f3b8706c8241b4e8abe4ac3ce36b7be8a97d08b08da5a72fedd5e976b3c9e1c463613a943ebb5d323e6a075ef6c7c3b1abdc0d53ac05 |
memory/2004-10-0x0000000002170000-0x00000000021F0000-memory.dmp
\??\c:\Users\Admin\AppData\Local\Temp\CSC9981.tmp
| MD5 | 3053e65594b7a24d3f99c09d1e300bc9 |
| SHA1 | 8ddb1c51490c40cf7af9fd1d3eaf8c97eadb51f0 |
| SHA256 | 72597e945625dfc78dc1248fce85e4a048f9bfa688e540133f1ffad579a99733 |
| SHA512 | 4cc25e761ed2d24a9f06ddeb6d17ed900bb1cb40c9061c53f21ff9df9640c5b111834245c2beb583cb7353f7f09809911fbca657e71814e9c34baa4b1cb2141b |
C:\Users\Admin\AppData\Local\Temp\RES9982.tmp
| MD5 | b0d4f10960c374f8bed2f9e9e344c209 |
| SHA1 | ee897faaf00723123aa8bf3f52aae480751b8918 |
| SHA256 | 587d84a9a347c07855741d013c613f7b0be7fc1f0e489b2cf96928243cc2dd66 |
| SHA512 | 721bfbad589689492117836b6bd731e2968abab661b5f73e7264430adb5b6679862e8cb47b38c30b871661919d7f9bea13d1165d4a09295a3b0372f2a6b5513c |
C:\Users\Admin\AppData\Local\Temp\i7olcwlv.dll
| MD5 | 832d67db9fd7c62d1fa0570c17cf1b9c |
| SHA1 | 56c8d8b28269ff3d66e7924b6ac6090b0093b7ff |
| SHA256 | 2470e68ca98797a092b6ffb5a078a268ee5c569edae9f5f775415008ed84c561 |
| SHA512 | 0093a8a41d08cbd067422695a4d2ed2e58a6de7b43a2452b2af29d049429cc237fbc3111b24b526dc316d629c72c41dff0eaf4eac68f8dbb5e9e4d7ae29d48fe |
memory/2164-18-0x0000000000B70000-0x0000000000B86000-memory.dmp
memory/2164-20-0x00000000003B0000-0x00000000003C2000-memory.dmp
memory/2164-21-0x0000000000650000-0x0000000000658000-memory.dmp
C:\Windows\system32\system31\loader.exe.config
| MD5 | a2b76cea3a59fa9af5ea21ff68139c98 |
| SHA1 | 35d76475e6a54c168f536e30206578babff58274 |
| SHA256 | f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839 |
| SHA512 | b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad |
C:\Windows\System32\system31\loader.exe
| MD5 | 5bc07820605f88458f319271255ca033 |
| SHA1 | d5f9e6b2755dd4d189a3e97a38cfe376cdacb81f |
| SHA256 | 97fcda2efb84505407d88da25d6c0d58371c57ed50be9ee1e9115746db247840 |
| SHA512 | c2f7dfbcc5f2de041943782154d70eea786161f655d291e5153ce06754e94479377006583eac4a5a10107bf8125450cecf621fa5dd56b70b78ff2293ae682555 |
memory/2164-29-0x000007FEF5760000-0x000007FEF60FD000-memory.dmp
memory/2688-31-0x0000000000EA0000-0x0000000000F8A000-memory.dmp
memory/2688-32-0x000007FEEF280000-0x000007FEEFC6C000-memory.dmp
memory/2688-33-0x000000001AD20000-0x000000001ADA0000-memory.dmp
memory/2688-34-0x0000000000480000-0x0000000000492000-memory.dmp
memory/2688-35-0x000007FEEF280000-0x000007FEEFC6C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-20 09:14
Reported
2024-02-20 09:15
Platform
win10v2004-20231215-en
Max time kernel
44s
Max time network
60s
Command Line
Signatures
Orcus
Orcus main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Orcurs Rat Executable
| Description | Indicator | Process | Target |
| 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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\system31\loader.exe | N/A |
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\system31\loader.exe | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
| File opened for modification | C:\Windows\system32\system31\loader.exe | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
| File created | C:\Windows\system32\system31\loader.exe.config | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\assembly | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\Hack.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4400 wrote to memory of 3912 | N/A | C:\Users\Admin\AppData\Local\Temp\Hack.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe |
| PID 4400 wrote to memory of 3912 | N/A | C:\Users\Admin\AppData\Local\Temp\Hack.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe |
| PID 3912 wrote to memory of 4648 | N/A | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe |
| PID 3912 wrote to memory of 4648 | N/A | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe |
| PID 4400 wrote to memory of 4240 | N/A | C:\Users\Admin\AppData\Local\Temp\Hack.exe | C:\Windows\system32\system31\loader.exe |
| PID 4400 wrote to memory of 4240 | N/A | C:\Users\Admin\AppData\Local\Temp\Hack.exe | C:\Windows\system32\system31\loader.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Hack.exe
"C:\Users\Admin\AppData\Local\Temp\Hack.exe"
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\rcdf8ab4.cmdline"
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES4AB6.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC4AB5.tmp"
C:\Windows\system32\system31\loader.exe
"C:\Windows\system32\system31\loader.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 190.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
Files
memory/4400-0-0x00007FF819D10000-0x00007FF81A6B1000-memory.dmp
memory/4400-1-0x00000000011D0000-0x00000000011E0000-memory.dmp
memory/4400-2-0x000000001B6A0000-0x000000001B6FC000-memory.dmp
memory/4400-5-0x000000001B730000-0x000000001B73E000-memory.dmp
memory/4400-6-0x00007FF819D10000-0x00007FF81A6B1000-memory.dmp
memory/4400-7-0x000000001BDB0000-0x000000001C27E000-memory.dmp
memory/4400-8-0x000000001C280000-0x000000001C31C000-memory.dmp
\??\c:\Users\Admin\AppData\Local\Temp\rcdf8ab4.cmdline
| MD5 | cc5ba43cea9c02a1638c63c9282e096a |
| SHA1 | 5437ba03d9c795142010b0e97619803396430dd4 |
| SHA256 | bbd0450e105fae54fa3508f21d97294fa370038920fe9326eacf8f6e725babd8 |
| SHA512 | 3c6216695e262990f1d23ef6cb2d7c547af9e3e3f1bc5764b12b6b92e93bb61812d7f934f4328c3b3c803270bc3ea62c764e4c32425238e15784634c58050d8b |
\??\c:\Users\Admin\AppData\Local\Temp\rcdf8ab4.0.cs
| MD5 | 5d907037f4b54dbab1bf453c2008817b |
| SHA1 | d2343b2308c178e068dc3cb588a6ddc0ed118492 |
| SHA256 | 220bf6f07a36f99ecc370e03399b8ab60a1686b1f1423ff6dda2cf05fadca7e4 |
| SHA512 | ab7468f7240f065cae4b324f7ce9fd0c0da9bc5b583c4b82db81a16965f9f2228ebdc2e4330fafcb7408594f2e67fed8b083933b4b97aa881e22f6acb636ee91 |
memory/3912-14-0x0000000000C30000-0x0000000000C40000-memory.dmp
\??\c:\Users\Admin\AppData\Local\Temp\CSC4AB5.tmp
| MD5 | 5ecfc65580ec5ba91dc5b66a5eff8f0a |
| SHA1 | 8fd6f39a05c0af3226b1990e98a4fd40fbb0cbca |
| SHA256 | 3de7f1411393a3df8e0dc5f3bbbcb8d3dceb131562e131cce030e13f007f20a4 |
| SHA512 | a0b048ab0f4f7123cbf51421d0b775ed9ee0858a4f8f3421dce185bba93d65a791ecd15b90b314df81e1a7022b3594a33be0b2554026fadaac49a7fef7ab0d69 |
C:\Users\Admin\AppData\Local\Temp\RES4AB6.tmp
| MD5 | 2db955813e7e7582de884a0413accfc9 |
| SHA1 | 5b24bd05350cd90445fdbceb38d0fed1ab094123 |
| SHA256 | 7dda75988e8ab4b8c88b87b1924dbe05da2b6c15a5bff66871fb63440449242b |
| SHA512 | 8e28aa43ddc3afdef8127d83739f422b014e9f354726fbaf437e98e7cbbf83f48c50b2d350d2fd206b520d11960e80e3102fd60b3b9280b562576450d6d083a9 |
C:\Users\Admin\AppData\Local\Temp\rcdf8ab4.dll
| MD5 | 354d5ed074fb5cb68be3b8f1450e2a5f |
| SHA1 | 30042ab16e69a8c50fa1160f699e82ca076e5ff8 |
| SHA256 | 22442dfe49dfa37d8073a830c41bea492e9e61aabe5ca310d62de8e7f15ec903 |
| SHA512 | 01c96fbb3f1bc6d57689729d49280fc1a0f7f4621458064055deeb1d98f57282aefb05274019d30e40f6f168849ad870c9bf7a357939f87e7164bf5ae2a04467 |
memory/4400-22-0x000000001C940000-0x000000001C956000-memory.dmp
memory/4400-24-0x0000000001040000-0x0000000001052000-memory.dmp
memory/4400-25-0x0000000000FD0000-0x0000000000FD8000-memory.dmp
C:\Windows\System32\system31\loader.exe
| MD5 | 5bc07820605f88458f319271255ca033 |
| SHA1 | d5f9e6b2755dd4d189a3e97a38cfe376cdacb81f |
| SHA256 | 97fcda2efb84505407d88da25d6c0d58371c57ed50be9ee1e9115746db247840 |
| SHA512 | c2f7dfbcc5f2de041943782154d70eea786161f655d291e5153ce06754e94479377006583eac4a5a10107bf8125450cecf621fa5dd56b70b78ff2293ae682555 |
C:\Windows\system32\system31\loader.exe.config
| MD5 | a2b76cea3a59fa9af5ea21ff68139c98 |
| SHA1 | 35d76475e6a54c168f536e30206578babff58274 |
| SHA256 | f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839 |
| SHA512 | b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad |
memory/4400-41-0x00007FF819D10000-0x00007FF81A6B1000-memory.dmp
memory/4240-42-0x0000000000EC0000-0x0000000000FAA000-memory.dmp
memory/4240-43-0x00007FF817910000-0x00007FF8183D1000-memory.dmp
memory/4240-44-0x000000001BD80000-0x000000001BD90000-memory.dmp
memory/4240-45-0x000000001BD10000-0x000000001BD22000-memory.dmp
memory/4240-47-0x00007FF817910000-0x00007FF8183D1000-memory.dmp