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| File name: | jyyzmx.exe |
| Full analysis: | https://app.any.run/tasks/0bb763cc-15af-4eb7-bc78-61eac7444d51 |
| Verdict: | Malicious activity |
| Threats: | Trojans are a group of malicious programs distinguished by their ability to masquerade as benign software. Depending on their type, trojans possess a variety of capabilities, ranging from maintaining full remote control over the victim’s machine to stealing data and files, as well as dropping other malware. At the same time, the main functionality of each trojan family can differ significantly depending on its type. The most common trojan infection chain starts with a phishing email. |
| Analysis date: | December 06, 2019, 18:48:03 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed |
| MD5: | 8530474EBB01BE3D794DCF2E6C94F1A7 |
| SHA1: | 1B897BA535E09656B5C13294F6E7DDFFAFACA6B6 |
| SHA256: | 5638AF918EB7A22A0A3B6C97CF97CACBD03FBADD2E405CE4F5B005EA62FCE059 |
| SSDEEP: | 12288:SjkArEN249AyE/rbaMct4bO2/VliZNfPyDfgEehA2M3LCjJeSlr42t3:FFE//Tct4bOsLkyLhi/XjJYW3 |
MALICIOUS
Changes the autorun value in the registry
- jyyzmx.exe (PID: 1412)
- csrcs.exe (PID: 3352)
Saves itself using automatic execution at hidden regitry location
- jyyzmx.exe (PID: 1412)
- csrcs.exe (PID: 3352)
UAC/LUA settings modification
- jyyzmx.exe (PID: 1412)
Changes appearance of the explorer extensions
- jyyzmx.exe (PID: 1412)
- csrcs.exe (PID: 3352)
SUSPICIOUS
Application launched itself
- jyyzmx.exe (PID: 2884)
Starts itself from another location
- jyyzmx.exe (PID: 1412)
Executable content was dropped or overwritten
- jyyzmx.exe (PID: 1412)
Creates files in the Windows directory
- jyyzmx.exe (PID: 1412)
- csrcs.exe (PID: 3352)
Uses RUNDLL32.EXE to load library
- csrcs.exe (PID: 3352)
Creates files in the user directory
- csrcs.exe (PID: 3352)
Reads Internet Cache Settings
- rundll32.exe (PID: 2924)
- rundll32.exe (PID: 2768)
- rundll32.exe (PID: 2424)
- rundll32.exe (PID: 2532)
- rundll32.exe (PID: 3512)
- rundll32.exe (PID: 1296)
- rundll32.exe (PID: 3016)
- rundll32.exe (PID: 1800)
- rundll32.exe (PID: 2184)
Checks for external IP
- csrcs.exe (PID: 3352)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | UPX compressed Win32 Executable (39.3) |
|---|---|---|
| .exe | | | Win32 EXE Yoda's Crypter (38.6) |
| .dll | | | Win32 Dynamic Link Library (generic) (9.5) |
| .exe | | | Win32 Executable (generic) (6.5) |
| .exe | | | Generic Win/DOS Executable (2.9) |
EXIF
EXE
| LegalCopyright: | #>ywnwM]L&b |
|---|---|
| FileDescription: | XolJlzG |
| Comments: | yTbOh3x1o|%Q |
| FileVersion: | 99.99.22.5 |
| CharacterSet: | Unicode |
| LanguageCode: | Catalan |
| FileSubtype: | - |
| ObjectFileType: | Unknown |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x0000 |
| ProductVersionNumber: | 3.3.6.1 |
| FileVersionNumber: | 99.99.22.5 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 5 |
| ImageVersion: | - |
| OSVersion: | 5 |
| EntryPoint: | 0xb2b70 |
| UninitializedDataSize: | 458752 |
| InitializedDataSize: | 8192 |
| CodeSize: | 270336 |
| LinkerVersion: | 9 |
| PEType: | PE32 |
| TimeStamp: | 2010:04:16 09:47:33+02:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 16-Apr-2010 07:47:33 |
| Detected languages: |
|
| FileVersion: | 99.99.22.5 |
| Comments: | yTbOh3x1o|%Q |
| FileDescription: | XolJlzG |
| LegalCopyright: | #>ywnwM]L&b |
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: | 0x00000110 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 16-Apr-2010 07:47:33 |
| 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 |
|---|---|---|---|---|---|
UPX0 | 0x00001000 | 0x00070000 | 0x00000000 | IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
UPX1 | 0x00071000 | 0x00042000 | 0x00041E00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 7.92867 |
.rsrc | 0x000B3000 | 0x00002000 | 0x00001E00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 4.08055 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.10071 | 778 | Latin 1 / Western European | Catalan - Spain | RT_MANIFEST |
2 | 3.66371 | 296 | Latin 1 / Western European | English - United Kingdom | RT_ICON |
3 | 2.25499 | 296 | Latin 1 / Western European | English - United Kingdom | RT_ICON |
4 | 3.5759 | 2984 | Latin 1 / Western European | English - United Kingdom | RT_ICON |
7 | 7.76591 | 1328 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
8 | 7.76841 | 1680 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
9 | 7.52699 | 1082 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
10 | 7.75364 | 1532 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
11 | 7.63445 | 1628 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
12 | 7.53237 | 904 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
Imports
ADVAPI32.dll |
COMCTL32.dll |
COMDLG32.dll |
GDI32.dll |
KERNEL32.DLL |
MPR.dll |
OLEAUT32.dll |
PSAPI.DLL |
SHELL32.dll |
USER32.dll |
Total processes
47
Monitored processes
12
Malicious processes
3
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 2884 | "C:\Users\admin\AppData\Local\Temp\jyyzmx.exe" | C:\Users\admin\AppData\Local\Temp\jyyzmx.exe | — | explorer.exe |
User: admin Integrity Level: MEDIUM Description: XolJlzG Exit code: 0 Version: 99.99.22.5 | ||||
| 1412 | "C:\Users\admin\AppData\Local\Temp\jyyzmx.exe" | C:\Users\admin\AppData\Local\Temp\jyyzmx.exe | jyyzmx.exe | |
User: admin Integrity Level: HIGH Description: XolJlzG Exit code: 0 Version: 99.99.22.5 | ||||
| 3352 | "C:\Windows\System32\csrcs.exe" | C:\Windows\System32\csrcs.exe | jyyzmx.exe | |
User: admin Integrity Level: HIGH Description: XolJlzG Version: 99.99.22.5 | ||||
| 2424 | "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\WININET.dll",DispatchAPICall 1 | C:\Windows\system32\rundll32.exe | — | csrcs.exe |
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2924 | "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\WININET.dll",DispatchAPICall 1 | C:\Windows\system32\rundll32.exe | — | csrcs.exe |
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2768 | "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\WININET.dll",DispatchAPICall 1 | C:\Windows\system32\rundll32.exe | — | csrcs.exe |
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2532 | "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\WININET.dll",DispatchAPICall 1 | C:\Windows\system32\rundll32.exe | — | csrcs.exe |
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 3512 | "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\WININET.dll",DispatchAPICall 1 | C:\Windows\system32\rundll32.exe | — | csrcs.exe |
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 1296 | "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\WININET.dll",DispatchAPICall 1 | C:\Windows\system32\rundll32.exe | — | csrcs.exe |
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 3016 | "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\WININET.dll",DispatchAPICall 1 | C:\Windows\system32\rundll32.exe | — | csrcs.exe |
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
Total events
662
Read events
594
Write events
0
Delete events
0
Modification events
Executable files
1
Suspicious files
2
Text files
10
Unknown types
1
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 1412 | jyyzmx.exe | C:\Users\admin\AppData\Local\Temp\autE56E.tmp | — | |
MD5:— | SHA256:— | |||
| 1412 | jyyzmx.exe | C:\Users\admin\AppData\Local\Temp\bnsmllv | — | |
MD5:— | SHA256:— | |||
| 3352 | csrcs.exe | C:\Users\admin\AppData\Local\Temp\autE8E8.tmp | — | |
MD5:— | SHA256:— | |||
| 3352 | csrcs.exe | C:\Users\admin\AppData\Local\Temp\xubrqra | — | |
MD5:— | SHA256:— | |||
| 3352 | csrcs.exe | C:\Users\admin\AppData\Local\Temp\~ip.tmp | — | |
MD5:— | SHA256:— | |||
| 2424 | rundll32.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\index.dat | dat | |
MD5:B10430DF6BD06EF428C38B47CF190EC4 | SHA256:91DA83DC85F570AAC4E9A5206DCB86C0327B6E13CBD46B38203ABE48E8ED722B | |||
| 3352 | csrcs.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Cookies\admin@whatismyip[1].txt | text | |
MD5:71C25028301F1FFB2ADB1827FB9F12D5 | SHA256:85A92E65E6129B1BE9D33F0383D4BD56BEC40F6E280FC490B7AEE09C6544137A | |||
| 3352 | csrcs.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Cookies\admin@whatismyip[2].txt | text | |
MD5:5CC75A9D10E06CF7CE78F391140BBFB6 | SHA256:33E968B2FDD42D1E082D3AE93C6B6E289BA6DF4CB9321DCDEA08782E6F22F074 | |||
| 3352 | csrcs.exe | C:\Windows\System32\autorun.i | binary | |
MD5:16527DDF28F5CC41819A0D37B671959A | SHA256:D99B687C521A53138E8208A33A9C2D79AD4AD1309DA98397568CE9BC9DD36E03 | |||
| 1412 | jyyzmx.exe | C:\Windows\system32\csrcs.exe | executable | |
MD5:8530474EBB01BE3D794DCF2E6C94F1A7 | SHA256:5638AF918EB7A22A0A3B6C97CF97CACBD03FBADD2E405CE4F5B005EA62FCE059 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
6
TCP/UDP connections
7
DNS requests
5
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3352 | csrcs.exe | GET | 200 | 162.217.98.134:80 | http://www.5eb149c0.com/xny.htm | US | — | — | malicious |
3352 | csrcs.exe | GET | 200 | 162.217.98.134:86 | http://www.5eb149c0.com:86/xny.htm | US | — | — | malicious |
3352 | csrcs.exe | GET | 200 | 162.88.193.70:80 | http://checkip.dyndns.org/?rnd1=49171.0052832707&rnd2=20483.1715319203 | US | html | 104 b | shared |
3352 | csrcs.exe | GET | 403 | 104.27.197.90:80 | http://www.whatismyip.com/automation/n09230945.asp | US | text | 16 b | shared |
3352 | csrcs.exe | GET | 403 | 104.27.197.90:80 | http://www.whatismyip.com/automation/n09230945.asp | US | text | 16 b | shared |
3352 | csrcs.exe | GET | 403 | 104.27.197.90:80 | http://www.whatismyip.com/automation/n09230945.asp | US | text | 16 b | shared |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
— | — | 104.27.197.90:80 | www.whatismyip.com | Cloudflare Inc | US | malicious |
3352 | csrcs.exe | 162.217.98.134:86 | www.5eb149c0.com | Voxel Dot Net, Inc. | US | malicious |
3352 | csrcs.exe | 104.27.197.90:80 | www.whatismyip.com | Cloudflare Inc | US | malicious |
3352 | csrcs.exe | 162.88.193.70:80 | checkip.dyndns.org | — | US | malicious |
3352 | csrcs.exe | 162.217.98.134:80 | www.5eb149c0.com | Voxel Dot Net, Inc. | US | malicious |
— | — | 89.38.97.17:82 | kasy.myhome.cx | WorldStream B.V. | NL | suspicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
www.whatismyip.com |
| shared |
checkip.dyndns.org |
| shared |
www.5eb149c0.com |
| malicious |
suse.extasix.com |
| unknown |
kasy.myhome.cx |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
3352 | csrcs.exe | Potential Corporate Privacy Violation | ET POLICY Autoit Windows Automation tool User-Agent in HTTP Request - Possibly Hostile |
3352 | csrcs.exe | Attempted Information Leak | ET POLICY IP Check whatismyip.com Automation Page |
3352 | csrcs.exe | Attempted Information Leak | ET POLICY IP Check Domain (whatismyip in HTTP Host) |
3352 | csrcs.exe | Potential Corporate Privacy Violation | ET POLICY Autoit Windows Automation tool User-Agent in HTTP Request - Possibly Hostile |
3352 | csrcs.exe | Attempted Information Leak | ET POLICY IP Check whatismyip.com Automation Page |
3352 | csrcs.exe | Attempted Information Leak | ET POLICY IP Check Domain (whatismyip in HTTP Host) |
— | — | Misc activity | ET INFO DYNAMIC_DNS Query to *.dyndns. Domain |
— | — | Misc activity | AV INFO Query to checkip.dyndns. Domain |
3352 | csrcs.exe | Potential Corporate Privacy Violation | ET POLICY Autoit Windows Automation tool User-Agent in HTTP Request - Possibly Hostile |
3352 | csrcs.exe | Attempted Information Leak | ET POLICY IP Check whatismyip.com Automation Page |