| File name: | dec.exe |
| Full analysis: | https://app.any.run/tasks/25c911d9-562b-4214-8d2b-6b6e869eb896 |
| 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: | October 08, 2021, 12:26:43 |
| 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, Nullsoft Installer self-extracting archive |
| MD5: | 9B8F97905F8E282E8636BF229CC051FA |
| SHA1: | 5EBF5C9470F76FABDC654C412C91217769FD7AF7 |
| SHA256: | 917A73C89D57171F6B172A278FD49ADCE967F2496BB0263C17BD99A657F27EE4 |
| SSDEEP: | 6144:F8LxBsy697ZKqVsbymIjJU/llUlil+Vzk2wHd/p:/TtxmbPCJvliEzS/p |
MALICIOUS
Drops executable file immediately after starts
- dec.exe (PID: 3056)
Loads dropped or rewritten executable
- dec.exe (PID: 3056)
FORMBOOK was detected
- Explorer.EXE (PID: 1516)
Connects to CnC server
- Explorer.EXE (PID: 1516)
SUSPICIOUS
Reads the computer name
- dec.exe (PID: 3056)
- dec.exe (PID: 1788)
Checks supported languages
- dec.exe (PID: 3056)
- dec.exe (PID: 1788)
Executable content was dropped or overwritten
- dec.exe (PID: 3056)
Drops a file with a compile date too recent
- dec.exe (PID: 3056)
Application launched itself
- dec.exe (PID: 3056)
Starts CMD.EXE for commands execution
- control.exe (PID: 2292)
Reads Environment values
- control.exe (PID: 2292)
INFO
Checks supported languages
- control.exe (PID: 2292)
- cmd.exe (PID: 3836)
Reads the computer name
- control.exe (PID: 2292)
Manual execution by user
- control.exe (PID: 2292)
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) (42.2) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (37.3) |
| .dll | | | Win32 Dynamic Link Library (generic) (8.8) |
| .exe | | | Win32 Executable (generic) (6) |
| .exe | | | Generic Win/DOS Executable (2.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2016:04:02 05:20:13+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 6 |
| CodeSize: | 24576 |
| InitializedDataSize: | 164864 |
| UninitializedDataSize: | 1024 |
| EntryPoint: | 0x312a |
| OSVersion: | 4 |
| ImageVersion: | 6 |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 02-Apr-2016 03:20:13 |
| Detected languages: |
|
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: | 0x000000C8 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 5 |
| Time date stamp: | 02-Apr-2016 03:20:13 |
| 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 | 0x00001000 | 0x00005E66 | 0x00006000 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.44066 |
.rdata | 0x00007000 | 0x000012A2 | 0x00001400 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 5.05833 |
.data | 0x00009000 | 0x00025D18 | 0x00000600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 4.18773 |
.ndata | 0x0002F000 | 0x00008000 | 0x00000000 | IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.rsrc | 0x00037000 | 0x000009E0 | 0x00000A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.49687 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.20725 | 716 | UNKNOWN | English - United States | RT_MANIFEST |
103 | 2.16096 | 20 | UNKNOWN | English - United States | RT_GROUP_ICON |
105 | 2.66174 | 256 | UNKNOWN | English - United States | RT_DIALOG |
106 | 2.88094 | 284 | UNKNOWN | English - United States | RT_DIALOG |
111 | 2.48825 | 96 | UNKNOWN | English - United States | RT_DIALOG |
Imports
ADVAPI32.dll |
COMCTL32.dll |
GDI32.dll |
KERNEL32.dll |
SHELL32.dll |
USER32.dll |
ole32.dll |
Total processes
37
Monitored processes
5
Malicious processes
1
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1516 | 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
| |||||||||||||||
| 1788 | "C:\Users\admin\AppData\Local\Temp\dec.exe" | C:\Users\admin\AppData\Local\Temp\dec.exe | — | dec.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 2292 | "C:\Windows\System32\control.exe" | C:\Windows\System32\control.exe | — | Explorer.EXE | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Control Panel Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3056 | "C:\Users\admin\AppData\Local\Temp\dec.exe" | C:\Users\admin\AppData\Local\Temp\dec.exe | Explorer.EXE | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 3836 | /c del "C:\Users\admin\AppData\Local\Temp\dec.exe" | C:\Windows\System32\cmd.exe | — | control.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
742
Read events
741
Write events
1
Delete events
0
Modification events
| (PID) Process: | (1516) Explorer.EXE | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Action Center\Checks\{C8E6F269-B90A-4053-A3BE-499AFCEC98C4}.check.0 |
| Operation: | write | Name: | CheckSetting |
Value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| |||
Executable files
1
Suspicious files
1
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3056 | dec.exe | C:\Users\admin\AppData\Local\Temp\5f6k2oyvt8bgeod9 | binary | |
MD5:— | SHA256:— | |||
| 3056 | dec.exe | C:\Users\admin\AppData\Local\Temp\nsc23C7.tmp\mcucxs.dll | executable | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
9
TCP/UDP connections
11
DNS requests
14
Threats
41
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
1516 | Explorer.EXE | GET | 301 | 50.87.194.112:80 | http://www.ces-emprego.com/s8ne/?KdJl0V=nZIy8wFzWc6OYYvJIpMalEiLWCCvNtHBFTyCvYJC2noE6YrueiMOXgIbsfepERDyTuXT4g==&ndhD=U4Nh | US | — | — | malicious |
1516 | Explorer.EXE | GET | — | 198.54.117.216:80 | http://www.alexandriafitness.com/s8ne/?KdJl0V=RJjrnsClX0+5cxrAikeij9voaHDCemxSpUeZvMEV9NA7wg/hoxxi32Yghf9uTWIbJEwAyw==&ndhD=U4Nh | US | — | — | malicious |
1516 | Explorer.EXE | GET | 403 | 34.102.136.180:80 | http://www.anftreward.com/s8ne/?KdJl0V=C10HxCyKQaz6N2TdFBNVHEoJwQxW7+xzwR/KRjjI+13TkFnJdtK7hvhmzuEDm2p63fYD0w==&ndhD=U4Nh | US | html | 275 b | whitelisted |
1516 | Explorer.EXE | GET | — | 94.73.147.77:80 | http://www.tasarimavcisirevize.xyz/s8ne/?KdJl0V=24Cz9dN3idgd0hVt/1BnpkDUvYaj6GKt2e3TyNFZ6JH0hjv+NAB+rl1AOddpOLVi36OZOA==&ndhD=U4Nh | TR | — | — | malicious |
1516 | Explorer.EXE | GET | 403 | 37.123.118.150:80 | http://www.hicwilk.quest/s8ne/?KdJl0V=Labkq061kN7Mc8qtFbYMl264OOn8ahxuxoXtMC+o/D1sLa+ivpdaYVPmd2ngm1OyiJAwoQ==&ndhD=U4Nh | GB | html | 178 b | malicious |
1516 | Explorer.EXE | GET | 403 | 34.102.136.180:80 | http://www.sliceofgold.xyz/s8ne/?KdJl0V=D/opgapGKuK7iE3cmklTuVqErZfjqpiINpsscQ95YcHPsaJeslH9x4Dsnjuejhn0mQwwDQ==&ndhD=U4Nh | US | html | 275 b | whitelisted |
1516 | Explorer.EXE | GET | 200 | 199.59.242.153:80 | http://www.hilltopautorepair.net/s8ne/?KdJl0V=uRD02Na8fuZs67Y9eGDUQbjRFcca8wB2Jfp2qv539BJzaKfXSd7d6uiViYTK+gXh2dhovQ==&ndhD=U4Nh | US | html | 1.40 Kb | malicious |
1516 | Explorer.EXE | GET | 200 | 107.186.164.61:80 | http://www.caoji163.com/s8ne/?KdJl0V=Ce0bGnjoFffOjbIS9cj+BtuqvCHGi+lKxi36R1ao3Kh2iaPcXxWfipwSyd8o+Br8z2upWg==&ndhD=U4Nh | US | html | 791 b | malicious |
1516 | Explorer.EXE | GET | 301 | 66.29.141.211:80 | http://www.livestreaminglab.online/s8ne/?KdJl0V=7KA4ykBhPYKZ6Nt5kITOrv//mPTDiI3owmMI5UeHo5BjSbBA6waJ8tgdt8uhOstvTplz/w==&ndhD=U4Nh | US | html | 707 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 |
|---|---|---|---|---|---|---|
1516 | Explorer.EXE | 198.54.117.216:80 | www.alexandriafitness.com | Namecheap, Inc. | US | malicious |
1516 | Explorer.EXE | 50.87.194.112:80 | www.ces-emprego.com | Unified Layer | US | malicious |
1516 | Explorer.EXE | 34.102.136.180:80 | www.anftreward.com | — | US | whitelisted |
— | — | 199.59.242.153:80 | www.hilltopautorepair.net | Bodis, LLC | US | malicious |
1516 | Explorer.EXE | 107.186.164.61:80 | www.caoji163.com | EGIHosting | US | malicious |
1516 | Explorer.EXE | 37.123.118.150:80 | www.hicwilk.quest | UK-2 Limited | GB | malicious |
1516 | Explorer.EXE | 66.29.141.211:80 | www.livestreaminglab.online | Advantagecom Networks, Inc. | US | malicious |
1516 | Explorer.EXE | 94.73.147.77:80 | www.tasarimavcisirevize.xyz | Cizgi Telekomunikasyon Anonim Sirketi | TR | malicious |
1516 | Explorer.EXE | 185.50.70.10:80 | www.androiduygulamamerkezi.xyz | Osbil Technology Ltd. | TR | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
www.ces-emprego.com |
| malicious |
www.b148tkrzne56rtbprgs1489.com |
| unknown |
www.alexandriafitness.com |
| malicious |
www.urbanfashionstore.com |
| unknown |
www.hicwilk.quest |
| malicious |
www.anftreward.com |
| whitelisted |
www.caipiranato.com |
| unknown |
www.hilltopautorepair.net |
| malicious |
www.sliceofgold.xyz |
| whitelisted |
www.caoji163.com |
| unknown |
Threats
PID | Process | Class | Message |
|---|---|---|---|
1516 | Explorer.EXE | Generic Protocol Command Decode | SURICATA HTTP Unexpected Request body |
1516 | Explorer.EXE | A Network Trojan was detected | ET TROJAN FormBook CnC Checkin (GET) |
1516 | Explorer.EXE | A Network Trojan was detected | ET TROJAN FormBook CnC Checkin (GET) |
1516 | Explorer.EXE | A Network Trojan was detected | ET TROJAN FormBook CnC Checkin (GET) |
1516 | Explorer.EXE | Generic Protocol Command Decode | SURICATA HTTP Unexpected Request body |
1516 | Explorer.EXE | A Network Trojan was detected | ET TROJAN FormBook CnC Checkin (GET) |
1516 | Explorer.EXE | A Network Trojan was detected | ET TROJAN FormBook CnC Checkin (GET) |
1516 | Explorer.EXE | A Network Trojan was detected | ET TROJAN FormBook CnC Checkin (GET) |
1516 | Explorer.EXE | Generic Protocol Command Decode | SURICATA HTTP Unexpected Request body |
1516 | Explorer.EXE | A Network Trojan was detected | ET TROJAN FormBook CnC Checkin (GET) |