| File name: | rundll32.exe |
| Full analysis: | https://app.any.run/tasks/7c2648d9-8b78-4113-a851-da9be9daaf56 |
| Verdict: | Malicious activity |
| Analysis date: | March 13, 2024, 18:59:35 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | D3E2C0943952285CE359FCBF28472491 |
| SHA1: | D63C7D7305A8B2184FFF3B0941E596F09287AA66 |
| SHA256: | 45BFA1327C2C0118C152C7192ADA429C6D4AE03B8164EBE36AB5BA9A84F5D7AA |
| SSDEEP: | 768:xiCSy5ysWfs1J+BwFG0IlRA9BrlNQxU+dlexN8noOLVM:YrsW0CnjYrlK7osVM |
MALICIOUS
Drops the executable file immediately after the start
- rundll32.exe (PID: 1384)
Connects to the CnC server
- iexplore.exe (PID: 3864)
Starts CMD.EXE for commands execution
- iexplore.exe (PID: 3864)
SUSPICIOUS
No suspicious indicators.INFO
Checks supported languages
- rundll32.exe (PID: 1384)
Reads the computer name
- rundll32.exe (PID: 1384)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable MS Visual C++ (generic) (67.4) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (14.2) |
| .exe | | | Win32 Executable (generic) (9.7) |
| .exe | | | Generic Win/DOS Executable (4.3) |
| .exe | | | DOS Executable Generic (4.3) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2017:05:22 20:46:43+00:00 |
| ImageFileCharacteristics: | No relocs, Executable, No line numbers, No symbols, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 6 |
| CodeSize: | 32768 |
| InitializedDataSize: | 20480 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x2e48 |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
Total processes
53
Monitored processes
7
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1384 | "C:\Users\admin\AppData\Local\Temp\rundll32.exe" | C:\Users\admin\AppData\Local\Temp\rundll32.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 1432 | "C:\Windows\system32\cmd.exe" /c dir C:\Users\admin\Desktop\ >> C:\Users\admin\AppData\Roaming\MICROS~1\HNC\1.hwp | C:\Windows\System32\cmd.exe | — | iexplore.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 2852 | "C:\Windows\system32\cmd.exe" /c dir C:\PROGRA~1\ >> C:\Users\admin\AppData\Roaming\MICROS~1\HNC\1.hwp | C:\Windows\System32\cmd.exe | — | iexplore.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 3304 | systeminfo | C:\Windows\System32\systeminfo.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Displays system information Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3736 | "C:\Windows\system32\cmd.exe" /c dir C:\Users\admin\AppData\Roaming\MICROS~1\Windows\Recent\ >> C:\Users\admin\AppData\Roaming\MICROS~1\HNC\1.hwp | C:\Windows\System32\cmd.exe | — | iexplore.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 3864 | "C:\Program Files\internet explorer\iexplore.exe" | C:\Program Files\internet explorer\iexplore.exe | rundll32.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Internet Explorer Exit code: 0 Version: 11.00.9600.16428 (winblue_gdr.131013-1700) Modules
| |||||||||||||||
| 3948 | "C:\Windows\system32\cmd.exe" /c systeminfo >> C:\Users\admin\AppData\Roaming\MICROS~1\HNC\1.hwp | C:\Windows\System32\cmd.exe | — | iexplore.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
Total events
1 391
Read events
1 293
Write events
89
Delete events
9
Modification events
| (PID) Process: | (3864) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (3864) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (3864) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (3864) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (3304) systeminfo.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (3304) systeminfo.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E |
| Operation: | write | Name: | @%SystemRoot%\system32\mlang.dll,-4386 |
Value: English (United States) | |||
| (PID) Process: | (3864) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content |
| Operation: | write | Name: | CachePrefix |
Value: | |||
| (PID) Process: | (3864) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
| (PID) Process: | (3864) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History |
| Operation: | write | Name: | CachePrefix |
Value: Visited: | |||
| (PID) Process: | (3864) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings |
| Operation: | write | Name: | ProxyEnable |
Value: 0 | |||
Executable files
0
Suspicious files
0
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 1432 | cmd.exe | C:\Users\admin\AppData\Roaming\MICROS~1\HNC\1.hwp | text | |
MD5:5D0B6CA7BC9DBABFC26D0BE05CE7B108 | SHA256:3F626A8F7F4874F58E17973A72A5B5766DB4E53B8AAC6600B8AA9AE63F3D9D30 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
6
TCP/UDP connections
10
DNS requests
1
Threats
9
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3864 | iexplore.exe | GET | — | 49.13.77.253:80 | http://ink.inkboom.co.kr/host/img/jpg/download.php?filename=VVNFUi1QQ19hZG1pbg== | unknown | — | — | unknown |
3864 | iexplore.exe | GET | — | 49.13.77.253:80 | http://ink.inkboom.co.kr/host/img/jpg/download.php?filename=VVNFUi1QQ19hZG1pbg== | unknown | — | — | unknown |
3864 | iexplore.exe | POST | — | 49.13.77.253:80 | http://ink.inkboom.co.kr/host/img/jpg/post.php | unknown | — | — | unknown |
3864 | iexplore.exe | GET | — | 49.13.77.253:80 | http://ink.inkboom.co.kr/host/img/jpg/download.php?filename=VVNFUi1QQ19hZG1pbg== | unknown | — | — | unknown |
3864 | iexplore.exe | GET | — | 49.13.77.253:80 | http://ink.inkboom.co.kr/host/img/jpg/download.php?filename=VVNFUi1QQ19hZG1pbg== | unknown | — | — | unknown |
3864 | iexplore.exe | GET | — | 49.13.77.253:80 | http://ink.inkboom.co.kr/host/img/jpg/download.php?filename=VVNFUi1QQ19hZG1pbg== | unknown | — | — | unknown |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
1080 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |
3864 | iexplore.exe | 49.13.77.253:80 | ink.inkboom.co.kr | Hetzner Online GmbH | DE | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
ink.inkboom.co.kr |
| unknown |
Threats
PID | Process | Class | Message |
|---|---|---|---|
3864 | iexplore.exe | Malware Command and Control Activity Detected | ET MALWARE W32/Kimsuky Sending Encrypted System Information to CnC |
3864 | iexplore.exe | Potentially Bad Traffic | ET HUNTING Suspicious Mozilla User-Agent - Likely Fake (Mozilla/4.0) |
3864 | iexplore.exe | Potentially Bad Traffic | ET HUNTING Suspicious Mozilla User-Agent - Likely Fake (Mozilla/4.0) |
3864 | iexplore.exe | Potentially Bad Traffic | ET HUNTING Suspicious Mozilla User-Agent - Likely Fake (Mozilla/4.0) |
3864 | iexplore.exe | Potentially Bad Traffic | ET HUNTING Suspicious Mozilla User-Agent - Likely Fake (Mozilla/4.0) |
4 ETPRO signatures available at the full report