Analysis Overview
SHA256
fc1e2a0ed20ef3cb8a543b65cc0db5d05f5e107a6c43bf6f1c0b581e6167a59f
Threat Level: Known bad
The file fc1e2a0ed20ef3cb8a543b65cc0db5d05f5e107a6c43bf6f1c0b581e6167a59f was found to be: Known bad.
Malicious Activity Summary
Detects PlugX payload
PlugX
Loads dropped DLL
Unexpected DNS network traffic destination
Checks computer location settings
Executes dropped EXE
Enumerates physical storage devices
Unsigned PE
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-04-10 15:06
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-10 15:06
Reported
2024-04-10 15:08
Platform
win7-20231129-en
Max time kernel
150s
Max time network
147s
Command Line
Signatures
Detects PlugX payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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PlugX
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe | N/A |
| N/A | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc1e2a0ed20ef3cb8a543b65cc0db5d05f5e107a6c43bf6f1c0b581e6167a59f.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| N/A | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
Unexpected DNS network traffic destination
| Description | Indicator | Process | Target |
| Destination IP | 8.217.48.154 | N/A | N/A |
| Destination IP | 8.217.48.154 | N/A | N/A |
| Destination IP | 8.217.48.154 | N/A | N/A |
| Destination IP | 8.217.48.154 | N/A | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\CLASSES\FAST | C:\Windows\system32\svchost.exe | N/A |
| Set value (data) | \REGISTRY\MACHINE\SOFTWARE\Classes\FAST\CLSID = 44004600390034004300390043004200370034004200340042003900380045000000 | C:\Windows\system32\svchost.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\svchost.exe | N/A |
| N/A | N/A | C:\Windows\system32\msiexec.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\msiexec.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\system32\msiexec.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\fc1e2a0ed20ef3cb8a543b65cc0db5d05f5e107a6c43bf6f1c0b581e6167a59f.exe
"C:\Users\Admin\AppData\Local\Temp\fc1e2a0ed20ef3cb8a543b65cc0db5d05f5e107a6c43bf6f1c0b581e6167a59f.exe"
C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe
"C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe"
C:\ProgramData\Bitdefender\USOPrivate.exe
"C:\ProgramData\Bitdefender\USOPrivate.exe" 100 2868
C:\ProgramData\Bitdefender\USOPrivate.exe
"C:\ProgramData\Bitdefender\USOPrivate.exe" 200 0
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe 201 0
C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe 209 2496
Network
| Country | Destination | Domain | Proto |
| N/A | 10.127.255.255:53 | udp | |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:53 | fuckeryoumm.nmb.bet | udp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:53 | fuckeryoumm.nmb.bet | udp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:443 | fuckeryoumm.nmb.bet | tcp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:443 | fuckeryoumm.nmb.bet | tcp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:53 | fuckeryoumm.nmb.bet | udp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:53 | fuckeryoumm.nmb.bet | udp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:443 | fuckeryoumm.nmb.bet | tcp |
Files
\Users\Admin\AppData\Local\Temp\USOPrivate.exe
| MD5 | 10866465a9b0c56af2cd093b80cdbc9f |
| SHA1 | fc77be3e68a79b597ffed1b307d1b447787e7995 |
| SHA256 | 9831526e475a4ed0d149bec15f69193a48249c3cda1ddb2f2140292afd862cfa |
| SHA512 | 975c0c3abe71d29a1391bc9a258df9560466f40764ff6dd8b06db5234d45a6c12f27c77bd26409fda051de598cdc0087afd847e46818553c5ed3eff53cfe2091 |
\Users\Admin\AppData\Local\Temp\log.dll
| MD5 | 1cf26c4edf92541cee6dcb327a15ab97 |
| SHA1 | 1838eb4a59e618e298a188347e37f76845c80cad |
| SHA256 | be213cfb0795e8a645d50eec7e55520e952279963dcef4e11b49c022ec283129 |
| SHA512 | 3bf8367435d51e0f8986bcfcabaf48780936f2baacaaa269496d77800364304d3bcf0edb9bcdb64ffe0130996f282b5ba40a232a15b799b01dda25f8a9504676 |
memory/2868-13-0x0000000077260000-0x0000000077261000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\USOPrivate.dat
| MD5 | 1a62834b9f2423effb90e133141b1f05 |
| SHA1 | fec09cab25b88e1566f0f766db29c6204acf63fc |
| SHA256 | a897a20a35e9c449a45932a75b626de649605e132ff49c0dbc745930fc0bbb89 |
| SHA512 | 4f674ae447a9c6dcced488fc3bf408a9173602b75c1bac492a60805ca536351052619393d9a72f7cfd958d9f5b1df8eb4085a0267f9cdd293a7c3b4486d25267 |
memory/2868-15-0x0000000000480000-0x0000000000580000-memory.dmp
memory/2868-17-0x0000000001E50000-0x0000000001E8A000-memory.dmp
memory/2460-35-0x0000000077260000-0x0000000077261000-memory.dmp
memory/2460-38-0x00000000002C0000-0x00000000002FA000-memory.dmp
memory/2460-39-0x00000000002C0000-0x00000000002FA000-memory.dmp
memory/2496-49-0x0000000000080000-0x00000000000A5000-memory.dmp
memory/2788-52-0x0000000000290000-0x00000000002CA000-memory.dmp
memory/2496-51-0x00000000000B0000-0x00000000000B2000-memory.dmp
memory/2496-54-0x0000000000060000-0x0000000000061000-memory.dmp
memory/2496-55-0x00000000002F0000-0x000000000032A000-memory.dmp
memory/2496-45-0x0000000000060000-0x0000000000061000-memory.dmp
memory/2496-58-0x00000000002F0000-0x000000000032A000-memory.dmp
memory/2788-44-0x0000000000290000-0x00000000002CA000-memory.dmp
memory/2868-70-0x0000000001E50000-0x0000000001E8A000-memory.dmp
memory/2496-69-0x0000000000060000-0x0000000000061000-memory.dmp
memory/2496-71-0x00000000002F0000-0x000000000032A000-memory.dmp
memory/2496-76-0x00000000002F0000-0x000000000032A000-memory.dmp
memory/2496-75-0x00000000002F0000-0x000000000032A000-memory.dmp
memory/2496-74-0x00000000002F0000-0x000000000032A000-memory.dmp
memory/2496-73-0x00000000002F0000-0x000000000032A000-memory.dmp
memory/2496-72-0x00000000002F0000-0x000000000032A000-memory.dmp
memory/2460-80-0x00000000002C0000-0x00000000002FA000-memory.dmp
memory/816-92-0x0000000000070000-0x0000000000071000-memory.dmp
memory/816-94-0x0000000000290000-0x00000000002CA000-memory.dmp
memory/816-95-0x0000000000290000-0x00000000002CA000-memory.dmp
memory/816-96-0x0000000000290000-0x00000000002CA000-memory.dmp
memory/816-93-0x0000000000290000-0x00000000002CA000-memory.dmp
memory/816-90-0x0000000000290000-0x00000000002CA000-memory.dmp
memory/2496-97-0x00000000002F0000-0x000000000032A000-memory.dmp
memory/816-98-0x0000000000290000-0x00000000002CA000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-10 15:06
Reported
2024-04-10 15:08
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
148s
Command Line
Signatures
Detects PlugX payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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PlugX
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\fc1e2a0ed20ef3cb8a543b65cc0db5d05f5e107a6c43bf6f1c0b581e6167a59f.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe | N/A |
| N/A | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| N/A | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe | N/A |
| N/A | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| N/A | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
Unexpected DNS network traffic destination
| Description | Indicator | Process | Target |
| Destination IP | 8.217.48.154 | N/A | N/A |
| Destination IP | 8.217.48.154 | N/A | N/A |
| Destination IP | 8.217.48.154 | N/A | N/A |
| Destination IP | 8.217.48.154 | N/A | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\CLASSES\FAST | C:\Windows\system32\svchost.exe | N/A |
| Set value (data) | \REGISTRY\MACHINE\SOFTWARE\Classes\FAST\CLSID = 31004400370041003000450035003100340032004500420032003500330032000000 | C:\Windows\system32\svchost.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\svchost.exe | N/A |
| N/A | N/A | C:\Windows\system32\msiexec.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\ProgramData\Bitdefender\USOPrivate.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\msiexec.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\system32\msiexec.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\fc1e2a0ed20ef3cb8a543b65cc0db5d05f5e107a6c43bf6f1c0b581e6167a59f.exe
"C:\Users\Admin\AppData\Local\Temp\fc1e2a0ed20ef3cb8a543b65cc0db5d05f5e107a6c43bf6f1c0b581e6167a59f.exe"
C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe
"C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe"
C:\ProgramData\Bitdefender\USOPrivate.exe
"C:\ProgramData\Bitdefender\USOPrivate.exe" 100 2124
C:\ProgramData\Bitdefender\USOPrivate.exe
"C:\ProgramData\Bitdefender\USOPrivate.exe" 200 0
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe 201 0
C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe 209 4856
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 202.142.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| N/A | 10.127.255.255:53 | udp | |
| HK | 8.217.48.154:53 | fuckeryoumm.nmb.bet | udp |
| US | 8.8.8.8:53 | 154.48.217.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.177.190.20.in-addr.arpa | udp |
| NL | 52.142.223.178:80 | tcp | |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:53 | fuckeryoumm.nmb.bet | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:443 | fuckeryoumm.nmb.bet | tcp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:443 | fuckeryoumm.nmb.bet | tcp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:53 | fuckeryoumm.nmb.bet | udp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:53 | fuckeryoumm.nmb.bet | udp |
| US | 8.8.8.8:53 | fuckeryoumm.nmb.bet | udp |
| HK | 8.217.48.154:443 | fuckeryoumm.nmb.bet | tcp |
Files
C:\Users\Admin\AppData\Local\Temp\USOPrivate.exe
| MD5 | 10866465a9b0c56af2cd093b80cdbc9f |
| SHA1 | fc77be3e68a79b597ffed1b307d1b447787e7995 |
| SHA256 | 9831526e475a4ed0d149bec15f69193a48249c3cda1ddb2f2140292afd862cfa |
| SHA512 | 975c0c3abe71d29a1391bc9a258df9560466f40764ff6dd8b06db5234d45a6c12f27c77bd26409fda051de598cdc0087afd847e46818553c5ed3eff53cfe2091 |
C:\Users\Admin\AppData\Local\Temp\log.dll
| MD5 | 1cf26c4edf92541cee6dcb327a15ab97 |
| SHA1 | 1838eb4a59e618e298a188347e37f76845c80cad |
| SHA256 | be213cfb0795e8a645d50eec7e55520e952279963dcef4e11b49c022ec283129 |
| SHA512 | 3bf8367435d51e0f8986bcfcabaf48780936f2baacaaa269496d77800364304d3bcf0edb9bcdb64ffe0130996f282b5ba40a232a15b799b01dda25f8a9504676 |
C:\Users\Admin\AppData\Local\Temp\USOPrivate.dat
| MD5 | 1a62834b9f2423effb90e133141b1f05 |
| SHA1 | fec09cab25b88e1566f0f766db29c6204acf63fc |
| SHA256 | a897a20a35e9c449a45932a75b626de649605e132ff49c0dbc745930fc0bbb89 |
| SHA512 | 4f674ae447a9c6dcced488fc3bf408a9173602b75c1bac492a60805ca536351052619393d9a72f7cfd958d9f5b1df8eb4085a0267f9cdd293a7c3b4486d25267 |
memory/2124-17-0x00007FF9A4480000-0x00007FF9A4481000-memory.dmp
memory/2124-19-0x000001A6E35C0000-0x000001A6E36C0000-memory.dmp
memory/2124-20-0x000001A6E3720000-0x000001A6E375A000-memory.dmp
memory/2124-21-0x000001A6E3720000-0x000001A6E375A000-memory.dmp
memory/2816-39-0x00007FF9A4480000-0x00007FF9A4481000-memory.dmp
memory/2816-41-0x000001D640C00000-0x000001D640C3A000-memory.dmp
memory/2816-42-0x000001D640C00000-0x000001D640C3A000-memory.dmp
memory/4092-46-0x000001F55E9C0000-0x000001F55E9FA000-memory.dmp
memory/4856-48-0x0000021008FD0000-0x0000021008FD1000-memory.dmp
memory/4092-47-0x000001F55E9C0000-0x000001F55E9FA000-memory.dmp
memory/4856-49-0x0000021009190000-0x00000210091CA000-memory.dmp
memory/4856-52-0x0000021009190000-0x00000210091CA000-memory.dmp
memory/2124-55-0x000001A6E3720000-0x000001A6E375A000-memory.dmp
memory/4856-63-0x0000021008FD0000-0x0000021008FD1000-memory.dmp
memory/4856-64-0x0000021009190000-0x00000210091CA000-memory.dmp
memory/4856-65-0x0000021009190000-0x00000210091CA000-memory.dmp
memory/4856-66-0x0000021009190000-0x00000210091CA000-memory.dmp
memory/4856-67-0x0000021009190000-0x00000210091CA000-memory.dmp
memory/4856-68-0x0000021009190000-0x00000210091CA000-memory.dmp
memory/4856-69-0x0000021009190000-0x00000210091CA000-memory.dmp
memory/4856-72-0x0000021009190000-0x00000210091CA000-memory.dmp
memory/2816-73-0x000001D640C00000-0x000001D640C3A000-memory.dmp
memory/3868-75-0x000002170E9A0000-0x000002170E9DA000-memory.dmp
memory/3868-79-0x000002170E9A0000-0x000002170E9DA000-memory.dmp
memory/3868-78-0x000002170E9A0000-0x000002170E9DA000-memory.dmp
memory/3868-81-0x000002170E9A0000-0x000002170E9DA000-memory.dmp
memory/3868-80-0x000002170E9A0000-0x000002170E9DA000-memory.dmp
memory/3868-77-0x000002170E930000-0x000002170E931000-memory.dmp
memory/4856-82-0x0000021009190000-0x00000210091CA000-memory.dmp
memory/3868-83-0x000002170E9A0000-0x000002170E9DA000-memory.dmp