| File name: | MACROS-RETO-DFIR.zip |
| Full analysis: | https://app.any.run/tasks/a5340cb3-21a8-4851-bdb6-ec055fb475e3 |
| Verdict: | Malicious activity |
| Analysis date: | April 11, 2024, 21:37:03 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/zip |
| File info: | Zip archive data, at least v2.0 to extract, compression method=deflate |
| MD5: | D1475CD5E8A46D9C1116DFE65D9F5E39 |
| SHA1: | C01172B22FAB64C6D387AF9B61D513AF7E8E33A7 |
| SHA256: | 33180AB9B8611DAD2A48EB4DFCF9B0DA28BA02381DBBE23FE67551063D77F94A |
| SSDEEP: | 3072:17HaEDVUvToYH2szsGJv2tEwHbsWRsHt6CxwD:RFVU0YVHJOtr4tt6CxwD |
MALICIOUS
Registers / Runs the DLL via REGSVR32.EXE
- EXCEL.EXE (PID: 3392)
Unusual execution from MS Office
- EXCEL.EXE (PID: 3392)
Calls Win API functions (MACROS)
- EXCEL.EXE (PID: 3392)
Connection from MS Office application
- EXCEL.EXE (PID: 3392)
SUSPICIOUS
Non-standard symbols in registry
- EXCEL.EXE (PID: 3392)
INFO
Reads Microsoft Office registry keys
- WinRAR.exe (PID: 3936)
Drops the executable file immediately after the start
- WinRAR.exe (PID: 3936)
Executable content was dropped or overwritten
- WinRAR.exe (PID: 3936)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .zip | | | ZIP compressed archive (100) |
|---|
EXIF
ZIP
| ZipRequiredVersion: | 20 |
|---|---|
| ZipBitFlag: | 0x0001 |
| ZipCompression: | Deflated |
| ZipModifyDate: | 2024:02:19 09:31:10 |
| ZipCRC: | 0x60926c59 |
| ZipCompressedSize: | 992 |
| ZipUncompressedSize: | 444989 |
| ZipFileName: | iroto.dll |
Total processes
42
Monitored processes
4
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 748 | regsvr32 -s ..\iroto1.dll | C:\Windows\System32\regsvr32.exe | — | EXCEL.EXE | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft(C) Register Server Exit code: 3 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2184 | regsvr32 -s ..\iroto.dll | C:\Windows\System32\regsvr32.exe | — | EXCEL.EXE | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft(C) Register Server Exit code: 3 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3392 | "C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde | C:\Program Files\Microsoft Office\Office14\EXCEL.EXE | WinRAR.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Excel Exit code: 0 Version: 14.0.6024.1000 Modules
| |||||||||||||||
| 3936 | "C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\Desktop\MACROS-RETO-DFIR.zip" | C:\Program Files\WinRAR\WinRAR.exe | explorer.exe | ||||||||||||
User: admin Company: Alexander Roshal Integrity Level: MEDIUM Description: WinRAR archiver Exit code: 0 Version: 5.91.0 Modules
| |||||||||||||||
Total events
12 893
Read events
12 648
Write events
103
Delete events
142
Modification events
| (PID) Process: | (3936) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtBMP |
Value: | |||
| (PID) Process: | (3936) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtIcon |
Value: | |||
| (PID) Process: | (3936) WinRAR.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (3936) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 3 |
Value: C:\Users\admin\Desktop\phacker.zip | |||
| (PID) Process: | (3936) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 2 |
Value: C:\Users\admin\Desktop\Win7-KB3191566-x86.zip | |||
| (PID) Process: | (3936) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 1 |
Value: C:\Users\admin\Desktop\curl-8.5.0_1-win32-mingw.zip | |||
| (PID) Process: | (3936) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 0 |
Value: C:\Users\admin\Desktop\MACROS-RETO-DFIR.zip | |||
| (PID) Process: | (3936) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | name |
Value: 120 | |||
| (PID) Process: | (3936) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | size |
Value: 80 | |||
| (PID) Process: | (3936) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | type |
Value: 120 | |||
Executable files
2
Suspicious files
6
Text files
1
Unknown types
1
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3936 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DIb3936.41909\MACRO-DFIR-RETO.xls | document | |
MD5:— | SHA256:— | |||
| 3392 | EXCEL.EXE | C:\Users\admin\AppData\Local\Temp\CVR49C6.tmp.cvr | — | |
MD5:— | SHA256:— | |||
| 3392 | EXCEL.EXE | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 | binary | |
MD5:— | SHA256:— | |||
| 3392 | EXCEL.EXE | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751 | binary | |
MD5:— | SHA256:— | |||
| 3392 | EXCEL.EXE | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751 | binary | |
MD5:— | SHA256:— | |||
| 3392 | EXCEL.EXE | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CA88E60CDC2F0ACA79E3A68BE8C06378 | der | |
MD5:— | SHA256:— | |||
| 3392 | EXCEL.EXE | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CA88E60CDC2F0ACA79E3A68BE8C06378 | binary | |
MD5:— | SHA256:— | |||
| 3392 | EXCEL.EXE | C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\PO2HN1X2\dot[1].htm | — | |
MD5:— | SHA256:— | |||
| 3392 | EXCEL.EXE | C:\Users\admin\iroto.dll | html | |
MD5:— | SHA256:— | |||
| 3936 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DIb3936.4270\iroto.dll | executable | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
9
DNS requests
6
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3392 | EXCEL.EXE | GET | 304 | 199.232.18.172:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?3e1ed4c11d1fb27a | unknown | — | — | unknown |
3392 | EXCEL.EXE | GET | 200 | 23.35.209.170:80 | http://x1.c.lencr.org/ | unknown | — | — | unknown |
3392 | EXCEL.EXE | GET | 200 | 95.101.75.42:80 | http://r3.o.lencr.org/MFMwUTBPME0wSzAJBgUrDgMCGgUABBRI2smg%2ByvTLU%2Fw3mjS9We3NfmzxAQUFC6zF7dYVsuuUAlA5h%2BvnYsUwsYCEgRqikkd%2BGqOdcek%2BhDvtyGdaQ%3D%3D | unknown | — | — | unknown |
1080 | svchost.exe | GET | 200 | 199.232.18.172:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?1b8fee253118cbef | unknown | — | — | unknown |
1080 | svchost.exe | GET | 304 | 199.232.18.172:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?3e412f7b4eff0943 | 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 | 192.168.100.255:137 | — | — | — | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
— | — | 224.0.0.252:5355 | — | — | — | unknown |
1080 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |
3392 | EXCEL.EXE | 188.209.214.83:443 | nws.visionconsulting.ro | ROMARG SRL | RO | unknown |
3392 | EXCEL.EXE | 199.232.18.172:80 | ctldl.windowsupdate.com | FASTLY | AT | unknown |
3392 | EXCEL.EXE | 23.35.209.170:80 | x1.c.lencr.org | AKAMAI-AS | CA | unknown |
3392 | EXCEL.EXE | 95.101.75.42:80 | r3.o.lencr.org | Akamai International B.V. | NL | unknown |
1080 | svchost.exe | 199.232.18.172:80 | ctldl.windowsupdate.com | FASTLY | AT | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
nws.visionconsulting.ro |
| unknown |
ctldl.windowsupdate.com |
| whitelisted |
x1.c.lencr.org |
| whitelisted |
r3.o.lencr.org |
| shared |
royalpalm.sparkblue.lk |
| unknown |