| File name: | tk.exe |
| Full analysis: | https://app.any.run/tasks/e3b3e629-ce09-48aa-a6ba-8245b0da0481 |
| 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: | April 25, 2019, 12:02:03 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 027B85506406DE61CFB2E5E0110AF859 |
| SHA1: | A1AD79FB725DD7684519ADF5B72E10DBE6CEE610 |
| SHA256: | FE8E17A9C32848D7A011C6FB43D5640451D00B99A4C255FEC9672A2D580E5B7B |
| SSDEEP: | 12288:64xd8PIcO+kOmZ2xd8PIcO+kOmZKSlVoOMPyeQaS:VMk+kbUMk+kbKSlVpM7QD |
MALICIOUS
Actions looks like stealing of personal data
- raserver.exe (PID: 3036)
Formbook was detected
- Firefox.exe (PID: 2932)
- raserver.exe (PID: 3036)
Stealing of credential data
- raserver.exe (PID: 3036)
FORMBOOK was detected
- explorer.exe (PID: 2044)
Connects to CnC server
- explorer.exe (PID: 2044)
Changes the autorun value in the registry
- raserver.exe (PID: 3036)
SUSPICIOUS
Application launched itself
- tk.exe (PID: 3916)
- taskhostppx.exe (PID: 980)
Starts CMD.EXE for commands execution
- raserver.exe (PID: 3036)
- taskhostppx.exe (PID: 980)
- tk.exe (PID: 3916)
Loads DLL from Mozilla Firefox
- raserver.exe (PID: 3036)
Executable content was dropped or overwritten
- explorer.exe (PID: 2044)
- DllHost.exe (PID: 2104)
Creates files in the program directory
- DllHost.exe (PID: 2104)
Creates files in the user directory
- raserver.exe (PID: 3036)
INFO
Creates files in the user directory
- Firefox.exe (PID: 2932)
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.) (82.9) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (7.4) |
| .exe | | | Win32 Executable (generic) (5.1) |
| .exe | | | Generic Win/DOS Executable (2.2) |
| .exe | | | DOS Executable Generic (2.2) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 1996:12:22 12:53:48+01:00 |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 534016 |
| InitializedDataSize: | 70144 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x8453e |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 8.12.17.21 |
| ProductVersionNumber: | 8.12.17.21 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | icijipakoz6319olezidom |
| CompanyName: | aci6535mubocos |
| FileDescription: | aro2323muhop |
| FileVersion: | 8.12.17.21 |
| InternalName: | jhd90.exe |
| LegalCopyright: | Copyright © 6000 |
| OriginalFileName: | jhd90.exe |
| ProductName: | aromuhop |
| ProductVersion: | 8.12.17.21 |
| AssemblyVersion: | 0.0.0.0 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 22-Dec-1996 11:53:48 |
| Comments: | icijipakoz6319olezidom |
| CompanyName: | aci6535mubocos |
| FileDescription: | aro2323muhop |
| FileVersion: | 8.12.17.21 |
| InternalName: | jhd90.exe |
| LegalCopyright: | Copyright © 6000 |
| OriginalFilename: | jhd90.exe |
| ProductName: | aromuhop |
| ProductVersion: | 8.12.17.21 |
| Assembly Version: | 0.0.0.0 |
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: | 22-Dec-1996 11:53:48 |
| 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 | 0x00082544 | 0x00082600 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 7.60501 |
.rsrc | 0x00086000 | 0x00011000 | 0x00011000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.54434 |
.reloc | 0x00098000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0980042 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.00112 | 490 | Latin 1 / Western European | UNKNOWN | RT_MANIFEST |
50 | 4.51785 | 67624 | UNKNOWN | UNKNOWN | RT_ICON |
Imports
mscoree.dll |
Total processes
50
Monitored processes
14
Malicious processes
3
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 980 | "C:\Program Files\Xolv\taskhostppx.exe" | C:\Program Files\Xolv\taskhostppx.exe | — | explorer.exe | |||||||||||
User: admin Company: aci6535mubocos Integrity Level: MEDIUM Description: aro2323muhop Exit code: 0 Version: 8.12.17.21 Modules
| |||||||||||||||
| 1740 | "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\admin\AppData\Local\Temp\tk.exe:Zone.Identifier" | C:\Windows\System32\cmd.exe | — | tk.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
| |||||||||||||||
| 1804 | "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\admin\AppData\Local\Temp\tk.exe:Zone.Identifier" | C:\Windows\System32\cmd.exe | — | tk.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
| |||||||||||||||
| 2044 | 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
| |||||||||||||||
| 2104 | 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
| |||||||||||||||
| 2116 | /c del "C:\Users\admin\AppData\Local\Temp\tk.exe" | C:\Windows\System32\cmd.exe | — | raserver.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
| |||||||||||||||
| 2160 | "C:\Users\admin\AppData\Local\Temp\tk.exe" | C:\Users\admin\AppData\Local\Temp\tk.exe | — | tk.exe | |||||||||||
User: admin Company: aci6535mubocos Integrity Level: MEDIUM Description: aro2323muhop Exit code: 0 Version: 8.12.17.21 Modules
| |||||||||||||||
| 2932 | "C:\Program Files\Mozilla Firefox\Firefox.exe" | C:\Program Files\Mozilla Firefox\Firefox.exe | raserver.exe | ||||||||||||
User: admin Company: Mozilla Corporation Integrity Level: MEDIUM Description: Firefox Exit code: 0 Version: 65.0.2 Modules
| |||||||||||||||
| 3036 | "C:\Windows\System32\raserver.exe" | C:\Windows\System32\raserver.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Remote Assistance COM Server Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3092 | "C:\Windows\System32\cmd.exe" /C type nul > "C:\Program Files\Xolv\taskhostppx.exe:Zone.Identifier" | C:\Windows\System32\cmd.exe | — | taskhostppx.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 1 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
Total events
239
Read events
229
Write events
10
Delete events
0
Modification events
| (PID) Process: | (3916) tk.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (3916) tk.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (3916) tk.exe | Key: | HKEY_CURRENT_USER |
| Operation: | write | Name: | |
Value: -boot | |||
| (PID) Process: | (3036) raserver.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | YLM0DHTPYJE |
Value: C:\Program Files\Xolv\taskhostppx.exe | |||
| (PID) Process: | (980) taskhostppx.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (980) taskhostppx.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
Executable files
2
Suspicious files
73
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3036 | raserver.exe | C:\Users\admin\AppData\Roaming\8Q44TP9E\8Q4logrc.ini | binary | |
MD5:— | SHA256:— | |||
| 2932 | Firefox.exe | C:\Users\admin\AppData\Roaming\8Q44TP9E\8Q4logrf.ini | binary | |
MD5:— | SHA256:— | |||
| 3036 | raserver.exe | C:\Users\admin\AppData\Roaming\8Q44TP9E\8Q4logim.jpeg | image | |
MD5:— | SHA256:— | |||
| 2044 | explorer.exe | C:\Users\admin\AppData\Local\Temp\Xolv\taskhostppx.exe | executable | |
MD5:— | SHA256:— | |||
| 2104 | DllHost.exe | C:\Program Files\Xolv\taskhostppx.exe | executable | |
MD5:— | SHA256:— | |||
| 3036 | raserver.exe | C:\Users\admin\AppData\Roaming\8Q44TP9E\8Q4logrv.ini | binary | |
MD5:BA3B6BC807D4F76794C4B81B09BB9BA5 | SHA256:6EEBF968962745B2E9DE2CA969AF7C424916D4E3FE3CC0BB9B3D414ABFCE9507 | |||
| 3036 | raserver.exe | C:\Users\admin\AppData\Roaming\8Q44TP9E\8Q4logri.ini | binary | |
MD5:D63A82E5D81E02E399090AF26DB0B9CB | SHA256:EAECE2EBA6310253249603033C744DD5914089B0BB26BDE6685EC9813611BAAE | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
4
TCP/UDP connections
5
DNS requests
6
Threats
9
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2044 | explorer.exe | GET | — | 132.148.81.114:80 | http://www.globalbuffetus.com/tu/?1b0=ktA7ExMgIAcYnEGd9d00NRxlLv+6gStvuH3Puat0wKP/hvrGEL+GNQx0lCPblVAupMvGqQ==&q2Kdh=3fnXnhspb42xRlCP | US | — | — | malicious |
2044 | explorer.exe | POST | — | 213.186.33.5:80 | http://www.rollup-plv.biz/tu/ | FR | — | — | malicious |
2044 | explorer.exe | POST | — | 213.186.33.5:80 | http://www.rollup-plv.biz/tu/ | FR | — | — | malicious |
2044 | explorer.exe | GET | 302 | 213.186.33.5:80 | http://www.rollup-plv.biz/tu/?1b0=jIWJhQ4M1/5bs99+9hRC307Aufd8+bsQKXDlS3WTKFHBzCCOCfZ3Nc8ub/oEHJ9rmoJiKg==&q2Kdh=3fnXnhspb42xRlCP&sql=1 | FR | html | 154 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 |
|---|---|---|---|---|---|---|
2044 | explorer.exe | 213.186.33.5:80 | www.rollup-plv.biz | OVH SAS | FR | malicious |
2044 | explorer.exe | 132.148.81.114:80 | www.globalbuffetus.com | GoDaddy.com, LLC | US | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
www.greatrafficforupdates.review |
| unknown |
www.globalbuffetus.com |
| malicious |
www.lfyl586.com |
| unknown |
www.rollup-plv.biz |
| malicious |
www.aquabizz.com |
| unknown |
www.prosperoneenterprises.com |
| unknown |
Threats
PID | Process | Class | Message |
|---|---|---|---|
2044 | explorer.exe | A Network Trojan was detected | MALWARE [PTsecurity] FormBook CnC Checkin (GET) |
2044 | explorer.exe | A Network Trojan was detected | MALWARE [PTsecurity] FormBook CnC Checkin (GET) |
2044 | explorer.exe | A Network Trojan was detected | MALWARE [PTsecurity] TrojanSpy:FormBook CnC Checkin (POST) |
2044 | explorer.exe | A Network Trojan was detected | MALWARE [PTsecurity] FormBook CnC Checkin (POST) |
2044 | explorer.exe | A Network Trojan was detected | MALWARE [PTsecurity] TrojanSpy:FormBook CnC Checkin (POST) |
2044 | explorer.exe | A Network Trojan was detected | MALWARE [PTsecurity] FormBook CnC Checkin (POST) |
3 ETPRO signatures available at the full report