| File name: | Ref1172020.exe |
| Full analysis: | https://app.any.run/tasks/34a9afe6-3d3f-4a86-908e-32a853ede2f8 |
| Verdict: | Malicious activity |
| Threats: | FormBook is a data stealer that is being distributed as a MaaS. FormBook differs from a lot of competing malware by its extreme ease of use that allows even the unexperienced threat actors to use FormBook virus. |
| Analysis date: | January 17, 2020, 20:57:45 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 9486AC021FECA509F61F55C66DF4DC93 |
| SHA1: | E6ADCFB691C68AD639904ABE3E4284258FCDE282 |
| SHA256: | AF1F415E687826D5883D964CE99AE7845C107B43CE0EF38EAD7184F159B15C9C |
| SSDEEP: | 12288:qzcgQc0XiaYYb8QUfIkanIfONuPDzzmON6n:azax7KCnMcuva4M |
MALICIOUS
FORMBOOK was detected
- explorer.exe (PID: 352)
- Firefox.exe (PID: 2536)
- wuapp.exe (PID: 4048)
Changes the autorun value in the registry
- wuapp.exe (PID: 4048)
Actions looks like stealing of personal data
- wuapp.exe (PID: 4048)
Connects to CnC server
- explorer.exe (PID: 352)
Stealing of credential data
- wuapp.exe (PID: 4048)
SUSPICIOUS
Starts CMD.EXE for commands execution
- wuapp.exe (PID: 4048)
Loads DLL from Mozilla Firefox
- wuapp.exe (PID: 4048)
Executable content was dropped or overwritten
- DllHost.exe (PID: 1948)
- explorer.exe (PID: 352)
Executed via COM
- DllHost.exe (PID: 1948)
Creates files in the user directory
- wuapp.exe (PID: 4048)
Creates files in the program directory
- DllHost.exe (PID: 1948)
INFO
Manual execution by user
- wuapp.exe (PID: 4048)
Reads the hosts file
- wuapp.exe (PID: 4048)
Creates files in the user directory
- Firefox.exe (PID: 2536)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2020:01:17 01:56:23+01:00 |
| PEType: | PE32 |
| LinkerVersion: | 6 |
| CodeSize: | 387072 |
| InitializedDataSize: | 34816 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x6068a |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.0.0.0 |
| ProductVersionNumber: | 1.0.0.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | - |
| FileVersion: | 1.0.0.0 |
| InternalName: | LogcatSharp.exe |
| LegalCopyright: | - |
| LegalTrademarks: | - |
| OriginalFileName: | LogcatSharp.exe |
| ProductName: | - |
| ProductVersion: | 1.0.0.0 |
| AssemblyVersion: | 1.0.0.0 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 17-Jan-2020 00:56:23 |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | - |
| FileVersion: | 1.0.0.0 |
| InternalName: | LogcatSharp.exe |
| LegalCopyright: | - |
| LegalTrademarks: | - |
| OriginalFilename: | LogcatSharp.exe |
| ProductName: | - |
| ProductVersion: | 1.0.0.0 |
| Assembly Version: | 1.0.0.0 |
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: | 3 |
| Time date stamp: | 17-Jan-2020 00:56:23 |
| 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 | 0x00002000 | 0x0005E690 | 0x0005E800 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 7.47178 |
.reloc | 0x00062000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0815394 |
.rsrc | 0x00064000 | 0x00008600 | 0x00008600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 7.42763 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 4.94168 | 436 | Latin 1 / Western European | UNKNOWN | RT_MANIFEST |
2 | 7.9478 | 22906 | Latin 1 / Western European | UNKNOWN | RT_ICON |
32512 | 2.13339 | 34 | Latin 1 / Western European | UNKNOWN | RT_GROUP_ICON |
Imports
mscoree.dll |
Total processes
43
Monitored processes
8
Malicious processes
3
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 352 | C:\Windows\Explorer.EXE | C:\Windows\explorer.exe | — | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Explorer Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 1596 | "C:\Users\admin\AppData\Local\Temp\Ref1172020.exe" | C:\Users\admin\AppData\Local\Temp\Ref1172020.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 1948 | C:\Windows\system32\DllHost.exe /Processid:{3AD05575-8857-4850-9277-11B85BDB8E09} | C:\Windows\system32\DllHost.exe | svchost.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: COM Surrogate Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2212 | /c del "C:\Users\admin\AppData\Local\Temp\Ref1172020.exe" | C:\Windows\System32\cmd.exe | — | wuapp.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
| |||||||||||||||
| 2536 | "C:\Program Files\Mozilla Firefox\Firefox.exe" | C:\Program Files\Mozilla Firefox\Firefox.exe | wuapp.exe | ||||||||||||
User: admin Company: Mozilla Corporation Integrity Level: MEDIUM Description: Firefox Exit code: 0 Version: 68.0.1 Modules
| |||||||||||||||
| 2608 | "C:\Windows\System32\wininit.exe" | C:\Windows\System32\wininit.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Start-Up Application Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3552 | "C:\Program Files\U7nl0cbmx\systraylzl.exe" | C:\Program Files\U7nl0cbmx\systraylzl.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 4048 | "C:\Windows\System32\wuapp.exe" | C:\Windows\System32\wuapp.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Update Application Launcher Exit code: 0 Version: 7.5.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
Total events
81
Read events
80
Write events
1
Delete events
0
Modification events
| (PID) Process: | (4048) wuapp.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | 7NL4ANK8ZD |
Value: C:\Program Files\U7nl0cbmx\systraylzl.exe | |||
Executable files
2
Suspicious files
80
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 4048 | wuapp.exe | C:\Users\admin\AppData\Roaming\4341Q-19\434logrc.ini | binary | |
MD5:— | SHA256:— | |||
| 4048 | wuapp.exe | C:\Users\admin\AppData\Roaming\4341Q-19\434logim.jpeg | image | |
MD5:— | SHA256:— | |||
| 352 | explorer.exe | C:\Users\admin\AppData\Local\Temp\U7nl0cbmx\systraylzl.exe | executable | |
MD5:— | SHA256:— | |||
| 1948 | DllHost.exe | C:\Program Files\U7nl0cbmx\systraylzl.exe | executable | |
MD5:— | SHA256:— | |||
| 2536 | Firefox.exe | C:\Users\admin\AppData\Roaming\4341Q-19\434logrf.ini | binary | |
MD5:— | SHA256:— | |||
| 4048 | wuapp.exe | C:\Users\admin\AppData\Roaming\4341Q-19\434logri.ini | binary | |
MD5:D63A82E5D81E02E399090AF26DB0B9CB | SHA256:EAECE2EBA6310253249603033C744DD5914089B0BB26BDE6685EC9813611BAAE | |||
| 4048 | wuapp.exe | C:\Users\admin\AppData\Roaming\4341Q-19\434logrv.ini | binary | |
MD5:BA3B6BC807D4F76794C4B81B09BB9BA5 | SHA256:6EEBF968962745B2E9DE2CA969AF7C424916D4E3FE3CC0BB9B3D414ABFCE9507 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
1
DNS requests
1
Threats
2
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
352 | explorer.exe | GET | 404 | 199.192.27.237:80 | http://www.spenbulk.com/t8a/?JfG=KY73rfdlNqo2jHElv4rY5XyK+kdUMkE/Dfqqdy5C2XDDqXdO1mNxqFbTpjYpAvPOWHlaFg==&QRr=uTmd0Tdp1f8H | US | html | 327 b | malicious |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
352 | explorer.exe | 199.192.27.237:80 | www.spenbulk.com | — | US | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
www.spenbulk.com |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
352 | explorer.exe | A Network Trojan was detected | SPYWARE [PTsecurity] FormBook |
1 ETPRO signatures available at the full report