Analysis Overview
SHA256
d1a63c4c34eed5c28c5a3d9059c7c9ac0de190bf38a2fd8b81f71fa61d8332f3
Threat Level: Likely malicious
The file 9ec81615510e5ea3b68231c44b086d00_NeikiAnalytics.exe was found to be: Likely malicious.
Malicious Activity Summary
Blocklisted process makes network request
Loads dropped DLL
Deletes itself
Executes dropped EXE
Reads user/profile data of web browsers
Adds Run key to start application
Writes to the Master Boot Record (MBR)
Enumerates connected drives
Unsigned PE
Runs ping.exe
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Checks processor information in registry
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-03 06:32
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-03 06:32
Reported
2024-06-03 06:35
Platform
win7-20231129-en
Max time kernel
144s
Max time network
144s
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 |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\cyjuur.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\cyjuur.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 |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\rllcd\\hfjan.dll\",init" | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\m: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\n: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\u: | \??\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) | \??\a: | \??\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) | \??\q: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\s: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\w: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\b: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\h: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\j: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\i: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\k: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\r: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\t: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\v: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\z: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\l: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\o: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\p: | \??\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 |
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\9ec81615510e5ea3b68231c44b086d00_NeikiAnalytics.exe | N/A |
| N/A | N/A | \??\c:\cyjuur.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\9ec81615510e5ea3b68231c44b086d00_NeikiAnalytics.exe
"C:\Users\Admin\AppData\Local\Temp\9ec81615510e5ea3b68231c44b086d00_NeikiAnalytics.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&c:\cyjuur.exe "C:\Users\Admin\AppData\Local\Temp\9ec81615510e5ea3b68231c44b086d00_NeikiAnalytics.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
\??\c:\cyjuur.exe
c:\cyjuur.exe "C:\Users\Admin\AppData\Local\Temp\9ec81615510e5ea3b68231c44b086d00_NeikiAnalytics.exe"
\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\rllcd\hfjan.dll",init c:\cyjuur.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 107.163.241.232:12354 | tcp | |
| US | 107.163.241.232:12354 | tcp | |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 107.163.241.232:12354 | tcp | |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 107.163.241.232:12354 | tcp | |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
Files
memory/2896-0-0x0000000000400000-0x0000000000425000-memory.dmp
memory/2896-1-0x0000000000260000-0x0000000000261000-memory.dmp
memory/2896-3-0x0000000000400000-0x0000000000425000-memory.dmp
\??\c:\cyjuur.exe
| MD5 | d6185cb22fff27ceb888282093b8faae |
| SHA1 | 1f78b9515c5840e1899b0b5018787bebb360af3c |
| SHA256 | 809740a45a2ba79cdabc8a6cd8f47d1c8a810ac4ff1163e74a4c70b8adfb0115 |
| SHA512 | 2c101f455dbb84d3140fa694d27fcdd5f88107281e4680daecd0e58e06b24171e20cbc6b22f0764bbae2556f38e73ba18f84f3d087b24280be98ba9fe6f8110d |
memory/2384-7-0x0000000000260000-0x0000000000285000-memory.dmp
memory/2384-6-0x0000000000260000-0x0000000000285000-memory.dmp
memory/2152-8-0x00000000002F0000-0x00000000002F1000-memory.dmp
memory/2152-10-0x0000000000400000-0x0000000000425000-memory.dmp
\??\c:\rllcd\hfjan.dll
| MD5 | 36e3fb5964d663272cf1169e1e1ca478 |
| SHA1 | 58115e08b49505bcbbb5c88a28a86222ba18d5d4 |
| SHA256 | c7c41689de030df0f78f471422fa2a6383b36e77c94e7f6f124a96feb3e27ed7 |
| SHA512 | daff53b11aa400437a06287707a334a09661c1ef7d0fd8beaf1a874c79c16fe45bd1188343d0623e839d3ead5ea2dd90896e37ccf3b252c7220c74989a9ba442 |
memory/2584-16-0x0000000010000000-0x000000001002E000-memory.dmp
memory/2584-17-0x0000000010000000-0x000000001002E000-memory.dmp
memory/2584-18-0x0000000010000000-0x000000001002E000-memory.dmp
memory/2584-20-0x0000000010021000-0x0000000010022000-memory.dmp
memory/2584-19-0x00000000001E0000-0x00000000001E1000-memory.dmp
memory/2584-21-0x0000000010000000-0x000000001002E000-memory.dmp
memory/2584-22-0x0000000010000000-0x000000001002E000-memory.dmp
memory/2584-23-0x00000000001E0000-0x00000000001E1000-memory.dmp
memory/2584-24-0x0000000010021000-0x0000000010022000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-03 06:32
Reported
2024-06-03 06:35
Platform
win10v2004-20240426-en
Max time kernel
146s
Max time network
149s
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:\bkfkw.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\bkfkw.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-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\vnynt\\fhuqy.dll\",init" | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\g: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\l: | \??\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) | \??\q: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\t: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\v: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\b: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\x: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\w: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\j: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\k: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\n: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\p: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\s: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\y: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\i: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\e: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\h: | \??\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) | \??\z: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\a: | \??\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\9ec81615510e5ea3b68231c44b086d00_NeikiAnalytics.exe | N/A |
| N/A | N/A | \??\c:\bkfkw.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\9ec81615510e5ea3b68231c44b086d00_NeikiAnalytics.exe
"C:\Users\Admin\AppData\Local\Temp\9ec81615510e5ea3b68231c44b086d00_NeikiAnalytics.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&c:\bkfkw.exe "C:\Users\Admin\AppData\Local\Temp\9ec81615510e5ea3b68231c44b086d00_NeikiAnalytics.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
\??\c:\bkfkw.exe
c:\bkfkw.exe "C:\Users\Admin\AppData\Local\Temp\9ec81615510e5ea3b68231c44b086d00_NeikiAnalytics.exe"
\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\vnynt\fhuqy.dll",init c:\bkfkw.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 107.163.241.232:12354 | tcp | |
| US | 107.163.241.232:12354 | tcp | |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 107.163.241.232:12354 | tcp | |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | 144.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
| US | 8.8.8.8:53 | krnaver.com | udp |
Files
memory/652-0-0x0000000000400000-0x0000000000425000-memory.dmp
memory/652-1-0x00000000005D0000-0x00000000005D1000-memory.dmp
memory/652-3-0x0000000000400000-0x0000000000425000-memory.dmp
C:\bkfkw.exe
| MD5 | 6ad006a1b713b98560e24d4c3656d889 |
| SHA1 | 8019a04bef9afb0465c36c926c30bf7f7d88d700 |
| SHA256 | 3d9ffdd0b3ffe8ba98ff36c4cdab235428ce3327097ea8ecb2f2979eab9b4903 |
| SHA512 | 943cfcaf06d082cd672bbca3363bb186f6b9bb4cd75214292a4f7fb4a37c78b5f60fd3e8d7e6970a05ab5228a341cbbea78a142c78ae93db238d42a2f2dba20a |
memory/1608-7-0x0000000000400000-0x0000000000425000-memory.dmp
memory/1608-8-0x0000000000830000-0x0000000000831000-memory.dmp
memory/1608-10-0x0000000000400000-0x0000000000425000-memory.dmp
C:\vnynt\fhuqy.dll
| MD5 | 36e3fb5964d663272cf1169e1e1ca478 |
| SHA1 | 58115e08b49505bcbbb5c88a28a86222ba18d5d4 |
| SHA256 | c7c41689de030df0f78f471422fa2a6383b36e77c94e7f6f124a96feb3e27ed7 |
| SHA512 | daff53b11aa400437a06287707a334a09661c1ef7d0fd8beaf1a874c79c16fe45bd1188343d0623e839d3ead5ea2dd90896e37ccf3b252c7220c74989a9ba442 |
memory/1588-15-0x0000000000BE0000-0x0000000000BE1000-memory.dmp
memory/1588-14-0x0000000010000000-0x000000001002E000-memory.dmp
memory/1588-13-0x0000000010000000-0x000000001002E000-memory.dmp
memory/1588-16-0x0000000010000000-0x000000001002E000-memory.dmp
memory/1588-17-0x0000000000BE0000-0x0000000000BE1000-memory.dmp