Analysis Overview
SHA256
b724c2473b4b6a0a7883dce478fd035009e534e25ad9190b609c06e4ab1053b1
Threat Level: Likely malicious
The file c034ae9562897648c7969f1ed989ce90_NEIKI was found to be: Likely malicious.
Malicious Activity Summary
Blocklisted process makes network request
Executes dropped EXE
Deletes itself
Reads user/profile data of web browsers
Loads dropped DLL
Enumerates connected drives
Adds Run key to start application
Writes to the Master Boot Record (MBR)
Unsigned PE
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Runs ping.exe
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-09 01:36
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-09 01:36
Reported
2024-05-09 01:38
Platform
win7-20240221-en
Max time kernel
52s
Max time network
154s
Command Line
Signatures
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\fozhq.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\fozhq.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\ctelvzg\\yauzz.dll\",GetWindowClass" | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\a: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\b: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PHYSICALDRIVE0 | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe | N/A |
| N/A | N/A | \??\c:\fozhq.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe
"C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&c:\fozhq.exe "C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
\??\c:\fozhq.exe
c:\fozhq.exe "C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"
\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\ctelvzg\yauzz.dll",GetWindowClass c:\fozhq.exe
Network
| Country | Destination | Domain | Proto |
| US | 67.198.215.210:803 | tcp | |
| US | 67.198.215.210:803 | tcp | |
| US | 67.198.215.210:3204 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.210:3204 | tcp | |
| US | 67.198.215.210:3204 | tcp | |
| US | 67.198.215.210:3204 | tcp |
Files
memory/2148-0-0x0000000000400000-0x000000000041D000-memory.dmp
memory/2148-2-0x0000000000400000-0x000000000041D000-memory.dmp
\??\c:\fozhq.exe
| MD5 | 6970fd2df9af92e1e9703023c99ece3a |
| SHA1 | 751a74c004212dc28a3818e148ebb0e0964aff44 |
| SHA256 | 6c3cefe6ae9d83950d17c162d1f014da2e840a3cd6ace9117c0d63dc2490b155 |
| SHA512 | ac82844260c3aa05b93f7cf2e173684a34328683813e9c3b6983556820a20929130a1f10da7c81dfffd0ce5a26a423a11b6a3a4b50f95525671c4c3de375b554 |
memory/2736-6-0x0000000000400000-0x000000000041D000-memory.dmp
memory/2928-5-0x0000000000410000-0x000000000042D000-memory.dmp
memory/2736-8-0x0000000000400000-0x000000000041D000-memory.dmp
\ctelvzg\yauzz.dll
| MD5 | 06c39ca503305efbf7274f6bf9394f28 |
| SHA1 | bec4daadab49f1f58a951d9cc1b2d7c1e2ae8450 |
| SHA256 | 19f33ba32f20dae1ea6a6b87824dc8e3e74527b34f9cd01a6e4f67e3e79dd867 |
| SHA512 | e6c8b19892b5ce5108909824ad37b0fe0eed2459939f0249133bf3e3c1470308d6d51aa3fbf42aabcbf37bb2412c8a27bff445e23dc0495910ec5f445055d931 |
memory/1364-15-0x0000000010000000-0x0000000010036000-memory.dmp
memory/1364-13-0x0000000010000000-0x0000000010036000-memory.dmp
memory/1364-17-0x0000000010000000-0x0000000010036000-memory.dmp
memory/1364-16-0x0000000010033000-0x0000000010034000-memory.dmp
memory/1364-18-0x0000000010000000-0x0000000010036000-memory.dmp
memory/1364-20-0x0000000010033000-0x0000000010034000-memory.dmp
memory/1364-23-0x0000000010000000-0x0000000010036000-memory.dmp
memory/1364-24-0x0000000010000000-0x0000000010036000-memory.dmp
memory/1364-25-0x0000000010000000-0x0000000010036000-memory.dmp
memory/1364-26-0x0000000010000000-0x0000000010036000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-09 01:36
Reported
2024-05-09 01:38
Platform
win10v2004-20240508-en
Max time kernel
142s
Max time network
137s
Command Line
Signatures
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\ppkcgvd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\ppkcgvd.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\modhn\\jesqfivz.dll\",GetWindowClass" | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\p: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\q: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\a: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\h: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\k: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\m: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\o: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\t: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\w: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\z: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\b: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\i: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\n: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\r: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\u: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\v: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\x: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\y: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\e: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\g: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\j: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\l: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\s: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PHYSICALDRIVE0 | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe | N/A |
| N/A | N/A | \??\c:\ppkcgvd.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe
"C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&c:\ppkcgvd.exe "C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
\??\c:\ppkcgvd.exe
c:\ppkcgvd.exe "C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"
\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\modhn\jesqfivz.dll",GetWindowClass c:\ppkcgvd.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 67.198.215.210:803 | tcp | |
| US | 67.198.215.210:3204 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.210:3204 | tcp | |
| US | 8.8.8.8:53 | 25.140.123.92.in-addr.arpa | udp |
| US | 67.198.215.210:3204 | tcp | |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 67.198.215.210:3204 | tcp |
Files
memory/2200-0-0x0000000000400000-0x000000000041D000-memory.dmp
memory/2200-2-0x0000000000400000-0x000000000041D000-memory.dmp
C:\ppkcgvd.exe
| MD5 | a3af9bb40a0736cccd5657bc6c7125ea |
| SHA1 | 2ca7b0af4d3d3b28fe2eb9c775c8bfe95a05df32 |
| SHA256 | fce3ffe69834b0363e62aa089d8e15ea37c9d131836bb0ad40b15ab9505de653 |
| SHA512 | 1e84fc80df6357aa1c5d0242e66cd3e63fbf353364b0d7e9bf921949ddffca514c6094eca03d69d4073b7dfbcd10729766149dbf799179b155ba578ab957db48 |
memory/2520-7-0x0000000000400000-0x000000000041D000-memory.dmp
\??\c:\modhn\jesqfivz.dll
| MD5 | 06c39ca503305efbf7274f6bf9394f28 |
| SHA1 | bec4daadab49f1f58a951d9cc1b2d7c1e2ae8450 |
| SHA256 | 19f33ba32f20dae1ea6a6b87824dc8e3e74527b34f9cd01a6e4f67e3e79dd867 |
| SHA512 | e6c8b19892b5ce5108909824ad37b0fe0eed2459939f0249133bf3e3c1470308d6d51aa3fbf42aabcbf37bb2412c8a27bff445e23dc0495910ec5f445055d931 |
memory/3404-10-0x0000000010000000-0x0000000010036000-memory.dmp
memory/3404-11-0x0000000000CB0000-0x0000000000CB2000-memory.dmp
memory/3404-12-0x0000000010000000-0x0000000010036000-memory.dmp
memory/3404-14-0x0000000000CB0000-0x0000000000CB2000-memory.dmp
memory/3404-15-0x0000000010000000-0x0000000010036000-memory.dmp
memory/3404-17-0x0000000010000000-0x0000000010036000-memory.dmp