| File name: | asss1.exe |
| Full analysis: | https://app.any.run/tasks/b3822287-f942-4e39-83a9-7b7ecb4bd68e |
| Verdict: | Malicious activity |
| Threats: | Ransomware is a type of malicious software that locks users out of their system or data using different methods to force them to pay a ransom. Most often, such programs encrypt files on an infected machine and demand a fee to be paid in exchange for the decryption key. Additionally, such programs can be used to steal sensitive information from the compromised computer and even conduct DDoS attacks against affected organizations to pressure them into paying. |
| Analysis date: | April 26, 2022, 16:31:22 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (console) Intel 80386 (stripped to external PDB), for MS Windows |
| MD5: | DB7A7403E5E248D0E96EFE67CEF73449 |
| SHA1: | 11331C98855FDF42BD94A84687661C682336FEA9 |
| SHA256: | 847FB7609F53ED334D5AFFBB07256C21CB5E6F68B1CC14004F5502D714D2A456 |
| SSDEEP: | 196608:h05ZqLIe01fXHitqWTpYCq2+2PFL+gY83fJu38IRAsgqsU8fyguPV:hQqL4i0y1K2IUYMIAsV |
MALICIOUS
Known privilege escalation attack
- DllHost.exe (PID: 3708)
Deletes shadow copies
- cmd.exe (PID: 3260)
- cmd.exe (PID: 3128)
Starts BCDEDIT.EXE to disable recovery
- cmd.exe (PID: 3140)
Renames files like Ransomware
- asss1.exe (PID: 4048)
SUSPICIOUS
Checks supported languages
- asss1.exe (PID: 2944)
- asss1.exe (PID: 1036)
- asss1.exe (PID: 4048)
- cmd.exe (PID: 3408)
- cmd.exe (PID: 2512)
- cmd.exe (PID: 3260)
- asss1.exe (PID: 3100)
- asss1.exe (PID: 1376)
- asss1.exe (PID: 2328)
- cmd.exe (PID: 1956)
- cmd.exe (PID: 2880)
- cmd.exe (PID: 3328)
- asss1.exe (PID: 600)
- asss1.exe (PID: 2584)
- asss1.exe (PID: 1796)
- asss1.exe (PID: 184)
- asss1.exe (PID: 3856)
- asss1.exe (PID: 3208)
- asss1.exe (PID: 2376)
- asss1.exe (PID: 2400)
- asss1.exe (PID: 668)
- asss1.exe (PID: 2884)
- asss1.exe (PID: 2184)
- cmd.exe (PID: 3128)
- WMIC.exe (PID: 2488)
- asss1.exe (PID: 1248)
- asss1.exe (PID: 2432)
- asss1.exe (PID: 1532)
- cmd.exe (PID: 3140)
- cmd.exe (PID: 1760)
- cmd.exe (PID: 3760)
- cmd.exe (PID: 228)
Reads the computer name
- asss1.exe (PID: 1036)
- asss1.exe (PID: 4048)
- asss1.exe (PID: 2328)
- asss1.exe (PID: 1376)
- asss1.exe (PID: 2376)
- asss1.exe (PID: 600)
- asss1.exe (PID: 1796)
- asss1.exe (PID: 184)
- asss1.exe (PID: 3856)
- asss1.exe (PID: 3100)
- asss1.exe (PID: 2584)
- asss1.exe (PID: 3208)
- asss1.exe (PID: 2432)
- asss1.exe (PID: 2884)
- asss1.exe (PID: 2184)
- asss1.exe (PID: 668)
- asss1.exe (PID: 1532)
- asss1.exe (PID: 2400)
- asss1.exe (PID: 1248)
- WMIC.exe (PID: 2488)
Executed via COM
- DllHost.exe (PID: 3708)
Starts CMD.EXE for commands execution
- asss1.exe (PID: 4048)
- cmd.exe (PID: 1760)
Executed as Windows Service
- vssvc.exe (PID: 1792)
Application launched itself
- asss1.exe (PID: 4048)
- cmd.exe (PID: 1760)
Uses REG.EXE to modify Windows registry
- cmd.exe (PID: 1956)
Creates files like Ransomware instruction
- asss1.exe (PID: 4048)
Creates files in the program directory
- asss1.exe (PID: 4048)
INFO
Checks supported languages
- verclsid.exe (PID: 2376)
- DllHost.exe (PID: 3708)
- fsutil.exe (PID: 2320)
- reg.exe (PID: 3136)
- vssadmin.exe (PID: 3584)
- ARP.EXE (PID: 3588)
- vssvc.exe (PID: 1792)
- fsutil.exe (PID: 2712)
- bcdedit.exe (PID: 540)
- bcdedit.exe (PID: 368)
Manual execution by user
- asss1.exe (PID: 1036)
- verclsid.exe (PID: 2376)
Reads the computer name
- DllHost.exe (PID: 3708)
- vssadmin.exe (PID: 3584)
- vssvc.exe (PID: 1792)
- ARP.EXE (PID: 3588)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | InstallShield setup (48.1) |
|---|---|---|
| .exe | | | Win32 Executable MS Visual C++ (generic) (34.9) |
| .dll | | | Win32 Dynamic Link Library (generic) (7.3) |
| .exe | | | Win32 Executable (generic) (5) |
| .exe | | | Generic Win/DOS Executable (2.2) |
EXIF
EXE
| Subsystem: | Windows command line |
|---|---|
| SubsystemVersion: | 4 |
| ImageVersion: | 1 |
| OSVersion: | 4 |
| EntryPoint: | 0x14c0 |
| UninitializedDataSize: | 2048 |
| InitializedDataSize: | 14962176 |
| CodeSize: | 11015680 |
| LinkerVersion: | 2.35 |
| PEType: | PE32 |
| TimeStamp: | 2022:03:27 20:47:35+02:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_CUI |
| Compilation Date: | 27-Mar-2022 18:47:35 |
| TLS Callbacks: | 3 callback(s) detected. |
DOS Header
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0090 |
| Pages in file: | 0x0003 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x0000 |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00B8 |
| Checksum: | 0x0000 |
| Initial IP value: | 0x0000 |
| Initial CS value: | 0x0000 |
| Overlay number: | 0x0000 |
| OEM identifier: | 0x0000 |
| OEM information: | 0x0000 |
| Address of NE header: | 0x00000080 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 9 |
| Time date stamp: | 27-Mar-2022 18:47:35 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00001000 | 0x00A815C8 | 0x00A81600 | IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_2048BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_8BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_CODE, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.67054 |
.data | 0x00A83000 | 0x000CF100 | 0x000CF200 | IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_2048BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_8BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 7.82269 |
.rdata | 0x00B53000 | 0x000AC404 | 0x000AC600 | IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_2048BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_8BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 7.57188 |
.eh_fram\xe4X\x0c | 0x00C00000 | 0x000C58E4 | 0x000C5A00 | IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.54924 |
.bss | 0x00CC6000 | 0x00000614 | 0x00000000 | IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_2048BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_8BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.idata | 0x00CC7000 | 0x00002318 | 0x00002400 | IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 5.4125 |
.CRT | 0x00CCA000 | 0x00000058 | 0x00000200 | IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0.715212 |
.tls | 0x00CCB000 | 0x00000008 | 0x00000200 | IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.reloc | 0x00CCC000 | 0x0017FC40 | 0x0017FE00 | IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 6.83368 |
Imports
KERNEL32.dll |
advapi32.dll |
bcrypt.dll |
kernel32.dll |
msvcrt.dll |
netapi32.dll |
ntdll.dll |
ole32.dll |
rstrtmgr.dll |
shell32.dll |
Total processes
109
Monitored processes
42
Malicious processes
4
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 184 | "C:\Users\admin\AppData\Local\Temp\asss1.exe" --child --access-token cd29cb89daed9e2f3987e90d7ac97488241d3f87e21a574e3b465e15544e050c | C:\Users\admin\AppData\Local\Temp\asss1.exe | — | asss1.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Modules
| |||||||||||||||
| 228 | cmd.exe /c for /F \"tokens=*\" %1 in ('wevtutil.exe el') DO wevtutil.exe cl \"%1\" | C:\Windows\system32\cmd.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows Command Processor Exit code: 1 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 368 | bcdedit /set {default} | C:\Windows\system32\bcdedit.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Boot Configuration Data Editor Exit code: 1 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 540 | bcdedit /set {default} recoveryenabled No | C:\Windows\system32\bcdedit.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Boot Configuration Data Editor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 600 | "C:\Users\admin\AppData\Local\Temp\asss1.exe" --child --access-token cd29cb89daed9e2f3987e90d7ac97488241d3f87e21a574e3b465e15544e050c | C:\Users\admin\AppData\Local\Temp\asss1.exe | — | asss1.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Modules
| |||||||||||||||
| 668 | "C:\Users\admin\AppData\Local\Temp\asss1.exe" --child --access-token cd29cb89daed9e2f3987e90d7ac97488241d3f87e21a574e3b465e15544e050c | C:\Users\admin\AppData\Local\Temp\asss1.exe | — | asss1.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Modules
| |||||||||||||||
| 1036 | "C:\Users\admin\AppData\Local\Temp\asss1.exe" --access-token cd29cb89daed9e2f3987e90d7ac97488241d3f87e21a574e3b465e15544e050c | C:\Users\admin\AppData\Local\Temp\asss1.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 1248 | "C:\Users\admin\AppData\Local\Temp\asss1.exe" --child --access-token cd29cb89daed9e2f3987e90d7ac97488241d3f87e21a574e3b465e15544e050c | C:\Users\admin\AppData\Local\Temp\asss1.exe | — | asss1.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Modules
| |||||||||||||||
| 1376 | "C:\Users\admin\AppData\Local\Temp\asss1.exe" --child --access-token cd29cb89daed9e2f3987e90d7ac97488241d3f87e21a574e3b465e15544e050c | C:\Users\admin\AppData\Local\Temp\asss1.exe | — | asss1.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Modules
| |||||||||||||||
| 1532 | "C:\Users\admin\AppData\Local\Temp\asss1.exe" --child --access-token cd29cb89daed9e2f3987e90d7ac97488241d3f87e21a574e3b465e15544e050c | C:\Users\admin\AppData\Local\Temp\asss1.exe | — | asss1.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Modules
| |||||||||||||||
Total events
4 281
Read events
4 180
Write events
53
Delete events
48
Modification events
| (PID) Process: | (3708) DllHost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (3708) DllHost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (3708) DllHost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (3708) DllHost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (2320) fsutil.exe | Key: | HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\FileSystem |
| Operation: | write | Name: | SymlinkRemoteToLocalEvaluation |
Value: 1 | |||
| (PID) Process: | (2712) fsutil.exe | Key: | HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\FileSystem |
| Operation: | write | Name: | SymlinkRemoteToRemoteEvaluation |
Value: 1 | |||
| (PID) Process: | (3136) reg.exe | Key: | HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\LanmanServer\Parameters |
| Operation: | write | Name: | MaxMpxCt |
Value: 65535 | |||
| (PID) Process: | (3588) ARP.EXE | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RFC1156Agent\CurrentVersion\Parameters |
| Operation: | write | Name: | TrapPollTimeMilliSecs |
Value: 15000 | |||
| (PID) Process: | (540) bcdedit.exe | Key: | HKEY_LOCAL_MACHINE\BCD00000000\Objects\{345b46fd-a9f9-11e7-a83c-e8a4f72b1d33}\Elements\16000009 |
| Operation: | write | Name: | Element |
Value: 00 | |||
| (PID) Process: | (4048) asss1.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000 |
| Operation: | write | Name: | Owner |
Value: D00F0000F014DD228B59D801 | |||
Executable files
0
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 4048 | asss1.exe | C:\Recovery\345b46fe-a9f9-11e7-a83c-e8a4f72b1d33\Winre.wim.uhwuvzu | — | |
MD5:— | SHA256:— | |||
| 4048 | asss1.exe | C:\Program Files\Mozilla Firefox\omni.ja.uhwuvzu | — | |
MD5:— | SHA256:— | |||
| 4048 | asss1.exe | C:\Program Files\Mozilla Firefox\browser\omni.ja.uhwuvzu | — | |
MD5:— | SHA256:— | |||
| 4048 | asss1.exe | C:\Program Files\Microsoft\Skype for Desktop\icudtl.dat.uhwuvzu | — | |
MD5:— | SHA256:— | |||
| 4048 | asss1.exe | C:\Program Files\Microsoft\Skype for Desktop\content_shell.pak.uhwuvzu | — | |
MD5:— | SHA256:— | |||
| 4048 | asss1.exe | C:\Program Files\Microsoft Office\Office14\JPPRINT.DAT.uhwuvzu | — | |
MD5:— | SHA256:— | |||
| 4048 | asss1.exe | C:\Program Files\Microsoft Office\Office14\KRPRINT.DAT.uhwuvzu | — | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
0
DNS requests
0
Threats
0
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report