| File name: | dexter.exe |
| Full analysis: | https://app.any.run/tasks/f02f73d2-0d74-4e73-b11a-703336d7f250 |
| Verdict: | Malicious activity |
| Threats: | Stealers are a group of malicious software that are intended for gaining unauthorized access to users’ information and transferring it to the attacker. The stealer malware category includes various types of programs that focus on their particular kind of data, including files, passwords, and cryptocurrency. Stealers are capable of spying on their targets by recording their keystrokes and taking screenshots. This type of malware is primarily distributed as part of phishing campaigns. |
| Analysis date: | November 22, 2020, 03:15:29 |
| 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 |
| MD5: | 140D24AF0C2B3A18529DF12DFBC5F6DE |
| SHA1: | E8DB5AD2B7FFEDE3E41B9C3ADB24F3232D764931 |
| SHA256: | 4EABB1ADC035F035E010C0D0D259C683E18193F509946652ED8AA7C5D92B6A92 |
| SSDEEP: | 1536:LP1Jm9HYIzX7Bm8JYCNE1dekdwxiin+tw9t6tEMY4Wq:LPb+HYmtHqCWdekyiPwgEMY4 |
MALICIOUS
Changes the autorun value in the registry
- iexplore.exe (PID: 3708)
Drops executable file immediately after starts
- iexplore.exe (PID: 3708)
Loads dropped or rewritten executable
- iexplore.exe (PID: 3708)
- SearchProtocolHost.exe (PID: 3352)
- explorer.exe (PID: 356)
Connects to CnC server
- iexplore.exe (PID: 3708)
DEXTER was detected
- iexplore.exe (PID: 3708)
SUSPICIOUS
Starts Internet Explorer
- dexter.exe (PID: 2388)
Executable content was dropped or overwritten
- iexplore.exe (PID: 3708)
INFO
Changes internet zones settings
- iexplore.exe (PID: 3708)
Application launched itself
- iexplore.exe (PID: 3708)
Creates files in the user directory
- iexplore.exe (PID: 3708)
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) (67.4) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (14.2) |
| .exe | | | Win32 Executable (generic) (9.7) |
| .exe | | | Generic Win/DOS Executable (4.3) |
| .exe | | | DOS Executable Generic (4.3) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2013:08:28 18:22:09+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 24576 |
| InitializedDataSize: | 42496 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x3af0 |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 28-Aug-2013 16:22:09 |
| 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: | 0x000000D8 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 4 |
| Time date stamp: | 28-Aug-2013 16:22:09 |
| 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 | 0x00005FDE | 0x00006000 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 6.07647 |
.data | 0x00007000 | 0x00003110 | 0x00002600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 4.79065 |
.rsrc | 0x0000B000 | 0x0000751C | 0x00007600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 7.21011 |
.reloc | 0x00013000 | 0x00000962 | 0x00000A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 6.18312 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 7.21295 | 29885 | Latin 1 / Western European | English - United States | RT_ICON |
Imports
ADVAPI32.dll |
KERNEL32.dll |
RPCRT4.dll |
SHELL32.dll |
SHLWAPI.dll |
USER32.dll |
WININET.dll |
WS2_32.dll |
ole32.dll |
urlmon.dll |
Total processes
36
Monitored processes
5
Malicious processes
3
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 356 | 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
| |||||||||||||||
| 556 | "C:\Program Files\Internet Explorer\iexplore.exe" | C:\Program Files\Internet Explorer\iexplore.exe | — | iexplore.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Internet Explorer Exit code: 0 Version: 11.00.9600.16428 (winblue_gdr.131013-1700) Modules
| |||||||||||||||
| 2388 | "C:\Users\admin\Downloads\dexter.exe" | C:\Users\admin\Downloads\dexter.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 3352 | "C:\Windows\system32\SearchProtocolHost.exe" Global\UsGthrFltPipeMssGthrPipe4_ Global\UsGthrCtrlFltPipeMssGthrPipe4 1 -2147483646 "Software\Microsoft\Windows Search" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT; MS Search 4.0 Robot)" "C:\ProgramData\Microsoft\Search\Data\Temp\usgthrsvc" "DownLevelDaemon" | C:\Windows\System32\SearchProtocolHost.exe | — | SearchIndexer.exe | |||||||||||
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Microsoft Windows Search Protocol Host Exit code: 0 Version: 7.00.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3708 | "C:\Program Files\Internet Explorer\iexplore.exe" | C:\Program Files\Internet Explorer\iexplore.exe | dexter.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Internet Explorer Exit code: 0 Version: 11.00.9600.16428 (winblue_gdr.131013-1700) Modules
| |||||||||||||||
Total events
62
Read events
42
Write events
20
Delete events
0
Modification events
| (PID) Process: | (3708) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\HelperSolutions Software |
| Operation: | write | Name: | Digit |
Value: 142dc3cb-d6f1-49b1-9152-f16aeacfc3b3 | |||
| (PID) Process: | (3708) iexplore.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Sun Java Security Plugin |
Value: C:\Users\admin\AppData\Roaming\Java Security Plugin\javaplugin.exe | |||
| (PID) Process: | (3708) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Sun Java Security Plugin |
Value: C:\Users\admin\AppData\Roaming\Java Security Plugin\javaplugin.exe | |||
| (PID) Process: | (3708) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0 |
| Operation: | write | Name: | 1806 |
Value: 0 | |||
| (PID) Process: | (3708) iexplore.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0 |
| Operation: | write | Name: | 1806 |
Value: 0 | |||
| (PID) Process: | (3708) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\HelperSolutions Software |
| Operation: | write | Name: | val1 |
Value: C:\Users\admin\Downloads\strokes.log | |||
| (PID) Process: | (3708) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\HelperSolutions Software |
| Operation: | write | Name: | val2 |
Value: C:\Users\admin\Downloads\tmp.log | |||
| (PID) Process: | (3708) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content |
| Operation: | write | Name: | CachePrefix |
Value: | |||
| (PID) Process: | (3708) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
| (PID) Process: | (3708) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History |
| Operation: | write | Name: | CachePrefix |
Value: Visited: | |||
Executable files
2
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3708 | iexplore.exe | C:\Users\admin\Downloads\SecureDll.dll | executable | |
MD5:B5F429729F6BA45DF4FC03B7B07A1FB8 | SHA256:E41FB7878C89CC728005F3C82F7EE8C14CE27EDCF4E307DDD8691F62DD5E6726 | |||
| 3708 | iexplore.exe | C:\Users\admin\AppData\Roaming\Java Security Plugin\javaplugin.exe | executable | |
MD5:140D24AF0C2B3A18529DF12DFBC5F6DE | SHA256:4EABB1ADC035F035E010C0D0D259C683E18193F509946652ED8AA7C5D92B6A92 | |||
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
0
Threats
2
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3708 | iexplore.exe | POST | 404 | 151.248.115.107:80 | http://151.248.115.107/w19218317418621031041543/gateway.php | RU | html | 169 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 |
|---|---|---|---|---|---|---|
3708 | iexplore.exe | 151.248.115.107:80 | — | Domain names registrar REG.RU, Ltd | RU | malicious |
DNS requests
Threats
PID | Process | Class | Message |
|---|---|---|---|
3708 | iexplore.exe | A Network Trojan was detected | ET TROJAN W32/Dexter Infostealer CnC POST |
3708 | iexplore.exe | A Network Trojan was detected | AV TROJAN Dexter POS Checkin |