Analysis Overview
SHA256
85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5
Threat Level: Likely malicious
The file 85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5 was found to be: Likely malicious.
Malicious Activity Summary
Detects executables containing base64 encoded User Agent
Blocklisted process makes network request
Deletes itself
Executes dropped EXE
UPX packed file
Loads dropped DLL
Reads user/profile data of web browsers
Writes to the Master Boot Record (MBR)
Enumerates connected drives
Adds Run key to start application
Drops file in Program Files directory
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Runs ping.exe
Checks processor information in registry
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-16 23:21
Signatures
UPX packed file
| 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
2024-06-16 23:21
Reported
2024-06-16 23:23
Platform
win7-20240611-en
Max time kernel
143s
Max time network
152s
Command Line
Signatures
Detects executables containing base64 encoded User Agent
| 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 |
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 |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\uxdntjqwx.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\uxdntjqwx.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.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 |
Reads user/profile data of web browsers
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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Windows\CurrentVersion\Run\Micro = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\ptvdu\\njxtq.dll\",method" | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| 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) | \??\z: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\a: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\b: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\m: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\l: | \??\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) | \??\u: | \??\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) | \??\k: | \??\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) | \??\v: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\w: | \??\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) | \??\i: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\n: | \??\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 |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | \??\c:\Program Files\ptvdu | C:\Users\Admin\AppData\Local\Temp\uxdntjqwx.exe | N/A |
| File created | \??\c:\Program Files\ptvdu\njxtq.dll | C:\Users\Admin\AppData\Local\Temp\uxdntjqwx.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\85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\uxdntjqwx.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5.exe
"C:\Users\Admin\AppData\Local\Temp\85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\uxdntjqwx.exe "C:\Users\Admin\AppData\Local\Temp\85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
C:\Users\Admin\AppData\Local\Temp\uxdntjqwx.exe
C:\Users\Admin\AppData\Local\Temp\\uxdntjqwx.exe "C:\Users\Admin\AppData\Local\Temp\85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5.exe"
\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\Program Files\ptvdu\njxtq.dll",method C:\Users\Admin\AppData\Local\Temp\uxdntjqwx.exe
Network
| Country | Destination | Domain | Proto |
| US | 107.163.56.246:18530 | 107.163.56.246 | tcp |
| US | 107.163.56.251:6658 | tcp | |
| US | 107.163.56.243:18963 | 107.163.56.243 | tcp |
| US | 107.163.56.243:18963 | tcp | |
| US | 107.163.56.243:18963 | tcp | |
| US | 107.163.56.251:6658 | tcp | |
| US | 107.163.56.251:6658 | tcp |
Files
memory/1688-0-0x0000000000400000-0x000000000044A000-memory.dmp
memory/1688-3-0x0000000000400000-0x000000000044A000-memory.dmp
\Users\Admin\AppData\Local\Temp\uxdntjqwx.exe
| MD5 | 3d776d31259f5dd9d268a6eaa85fa393 |
| SHA1 | 0fe77f65fe574d2ead7c7145f73987c7f95867da |
| SHA256 | 68a6d9d805b326cc3f8b786407b2aa3a00a7cabd00adfd05798d9b6f872b5de9 |
| SHA512 | 134350208326edc4dae19dd7123d6a47a4ae342802e9fce0efee1216a7bb2f0397a7982e1e5eaf634abfdcfe324d06641bf496f900cd978fcee0bc4ce0345776 |
memory/2864-10-0x0000000000400000-0x000000000044A000-memory.dmp
\??\c:\Program Files\ptvdu\njxtq.dll
| MD5 | 16574eec8585aeccf3356cf4c8375931 |
| SHA1 | 2ce97e355ef5e3f20e3188782e317e7113b895e3 |
| SHA256 | f663d5c8eddb791b948e3e50c977d8d626bb188ed6c8d90edebf32cee7350115 |
| SHA512 | c8de53db42293f07a14d9db025fcc143a5e5635063823ff0ef92b679efbc46c228eedd0fc8443a5838a1eb7a3f3c439162819c1d1e2111eec4c88d6d269678da |
memory/3064-16-0x0000000010000000-0x0000000010056000-memory.dmp
memory/3064-21-0x0000000010050000-0x0000000010051000-memory.dmp
memory/3064-20-0x0000000010000000-0x0000000010056000-memory.dmp
memory/3064-18-0x0000000010000000-0x0000000010056000-memory.dmp
memory/3064-22-0x0000000010000000-0x0000000010056000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-16 23:21
Reported
2024-06-16 23:23
Platform
win10v2004-20240226-en
Max time kernel
151s
Max time network
159s
Command Line
Signatures
Detects executables containing base64 encoded User Agent
| 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 |
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:\Users\Admin\AppData\Local\Temp\dcmxuy.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\dcmxuy.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
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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Micro = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\ulmzl\\geyza.dll\",method" | \??\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 |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | \??\c:\Program Files\ulmzl | C:\Users\Admin\AppData\Local\Temp\dcmxuy.exe | N/A |
| File created | \??\c:\Program Files\ulmzl\geyza.dll | C:\Users\Admin\AppData\Local\Temp\dcmxuy.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\85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\dcmxuy.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5.exe
"C:\Users\Admin\AppData\Local\Temp\85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dcmxuy.exe "C:\Users\Admin\AppData\Local\Temp\85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
C:\Users\Admin\AppData\Local\Temp\dcmxuy.exe
C:\Users\Admin\AppData\Local\Temp\\dcmxuy.exe "C:\Users\Admin\AppData\Local\Temp\85116b9534fe3ff0aace7f279b8f431c65068dc3dc3516beb3842253e33724d5.exe"
\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\Program Files\ulmzl\geyza.dll",method C:\Users\Admin\AppData\Local\Temp\dcmxuy.exe
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1424 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
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 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 107.163.56.246:18530 | tcp | |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 107.163.56.251:6658 | tcp | |
| US | 107.163.56.243:18963 | tcp | |
| US | 107.163.56.243:18963 | tcp | |
| US | 107.163.56.243:18963 | tcp | |
| US | 107.163.56.251:6658 | tcp | |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 107.163.56.251:6658 | tcp | |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| DE | 142.250.186.170:443 | chromewebstore.googleapis.com | tcp |
| US | 8.8.8.8:53 | 170.186.250.142.in-addr.arpa | udp |
| US | 107.163.56.251:6658 | tcp |
Files
memory/4024-0-0x0000000000400000-0x000000000044A000-memory.dmp
memory/4024-2-0x0000000000400000-0x000000000044A000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\dcmxuy.exe
| MD5 | a1b9ed224cb2f14ff07edb60bee7458a |
| SHA1 | 508b5d5d299623e4f434b7895de5faf8c70c06d6 |
| SHA256 | 2c0d5c85f5589228554ae6ccd7cfdcb70aaf52efff03d20e41b6a8ac6b9c0d87 |
| SHA512 | 5c9f10f9dbc872a7bcc7ea6c808226f8b755e7e2975d449ed4a234e7fd5d3ac054d7a6f94f2d0ecc6679cbecf90d871719e80274fc9225201b30fb2fe4ddf7b3 |
memory/1548-6-0x0000000000400000-0x000000000044A000-memory.dmp
memory/1548-8-0x0000000000400000-0x000000000044A000-memory.dmp
\??\c:\Program Files\ulmzl\geyza.dll
| MD5 | 21f3e95ceabc201f87c4527cc2a7de2a |
| SHA1 | 9bea9b5d7d58d6dbb9ca81055903f0e0ff073675 |
| SHA256 | a4a40afee2e833a5a582d7b9d146d3c3e12fbaf10f522ff51939fbe512a5a8f3 |
| SHA512 | 2e7c161b885b265ab680f113fd3b6055a3d04651e60be7f69a7a28c9597b36da87d8e50cabf91c99bcea9d27ec4eeba818c69c89f70ec8e066d601a41f72a2d3 |
memory/1052-13-0x0000000010000000-0x0000000010056000-memory.dmp
memory/1052-14-0x0000000010050000-0x0000000010051000-memory.dmp
memory/1052-11-0x0000000010000000-0x0000000010056000-memory.dmp
memory/1052-15-0x0000000010000000-0x0000000010056000-memory.dmp