File name: | C:\Users\admin\AppData\Local\Microsoft\TerminalServerClient\TermSrvClt.dll |
Full analysis: | https://app.any.run/tasks/780d4c5d-c34e-42c8-9ee7-0b2f6664d207 |
Verdict: | Malicious activity |
Threats: | A backdoor is a type of cybersecurity threat that allows attackers to secretly compromise a system and conduct malicious activities, such as stealing data and modifying files. Backdoors can be difficult to detect, as they often use legitimate system applications to evade defense mechanisms. Threat actors often utilize special malware, such as PlugX, to establish backdoors on target devices. |
Analysis date: | June 07, 2021, 10:20:59 |
OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
Tags: | |
Indicators: | |
MIME: | application/x-dosexec |
File info: | PE32 executable (DLL) (GUI) Intel 80386, for MS Windows |
MD5: | FA4B1EFD428BBF47F9C8395CA91EFF25 |
SHA1: | E15C665F02FB288FC4BDEF9D23B2DC802B3ACA0D |
SHA256: | AE0BC3358FEF0CA2A103E694AA556F55A3FED4E98BA57D16F5AE7AD4AD583698 |
SSDEEP: | 1536:jJJyYcrCepXTf3ir4tecD1xssWjcd6yoL:jJIYeCeQr4tvD6y |
.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) |
MachineType: | Intel 386 or later, and compatibles |
---|---|
TimeStamp: | 2021:04:06 13:43:16+02:00 |
PEType: | PE32 |
LinkerVersion: | 11 |
CodeSize: | 38400 |
InitializedDataSize: | 41984 |
UninitializedDataSize: | - |
EntryPoint: | 0x3365 |
OSVersion: | 5.1 |
ImageVersion: | - |
SubsystemVersion: | 5.1 |
Subsystem: | Windows GUI |
Architecture: | IMAGE_FILE_MACHINE_I386 |
---|---|
Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
Compilation Date: | 06-Apr-2021 11:43:16 |
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: | 0x000000E0 |
Signature: | PE |
---|---|
Machine: | IMAGE_FILE_MACHINE_I386 |
Number of sections: | 4 |
Time date stamp: | 06-Apr-2021 11:43:16 |
Pointer to Symbol Table: | 0x00000000 |
Number of symbols: | 0 |
Size of Optional Header: | 0x00E0 |
Characteristics: |
|
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
---|---|---|---|---|---|
.text | 0x00001000 | 0x00009450 | 0x00009600 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.44445 |
.rdata | 0x0000B000 | 0x00004F25 | 0x00005000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.60417 |
.data | 0x00010000 | 0x00002BF4 | 0x00000E00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 2.25908 |
.reloc | 0x00013000 | 0x00002666 | 0x00002800 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 3.14984 |
ADVAPI32.dll |
CRYPT32.dll |
KERNEL32.dll |
SHELL32.dll |
SHLWAPI.dll |
USER32.dll |
WININET.dll |
Title | Ordinal | Address |
---|---|---|
RunMod | 1 | 0x00001D90 |
PID | CMD | Path | Indicators | Parent process | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
440 | "C:\Windows\System32\rundll32.exe" C:\Users\admin\TermSrvClt.dll.exe, #1 | C:\Windows\System32\rundll32.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
2820 | systeminfo | C:\Windows\System32\systeminfo.exe | — | rundll32.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Displays system information Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
3112 | "C:\Windows\system32\SearchProtocolHost.exe" Global\UsGthrFltPipeMssGthrPipe2_ Global\UsGthrCtrlFltPipeMssGthrPipe2 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
| |||||||||||||||
3552 | tasklist | C:\Windows\System32\tasklist.exe | — | rundll32.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Lists the current running tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
|
(PID) Process: | (2820) systeminfo.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E |
Operation: | write | Name: | LanguageList |
Value: en-US | |||
(PID) Process: | (2820) systeminfo.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E |
Operation: | write | Name: | @%SystemRoot%\system32\mlang.dll,-4386 |
Value: English (United States) | |||
(PID) Process: | (440) rundll32.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings |
Operation: | write | Name: | ProxyEnable |
Value: 0 | |||
(PID) Process: | (440) rundll32.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections |
Operation: | write | Name: | SavedLegacySettings |
Value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| |||
(PID) Process: | (440) rundll32.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
(PID) Process: | (440) rundll32.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
Operation: | write | Name: | AutoDetect |
Value: 1 | |||
(PID) Process: | (440) rundll32.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content |
Operation: | write | Name: | CachePrefix |
Value: | |||
(PID) Process: | (440) rundll32.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies |
Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
(PID) Process: | (440) rundll32.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History |
Operation: | write | Name: | CachePrefix |
Value: Visited: |
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
---|---|---|---|---|---|---|---|---|---|
440 | rundll32.exe | POST | — | 5.149.253.45:80 | http://updaterweb.com/ | CA | — | — | malicious |
440 | rundll32.exe | POST | — | 5.149.253.45:80 | http://updaterweb.com/ | CA | — | — | malicious |
PID | Process | IP | Domain | ASN | CN | Reputation |
---|---|---|---|---|---|---|
440 | rundll32.exe | 5.149.253.45:443 | updaterweb.com | HZ Hosting Ltd | CA | malicious |
440 | rundll32.exe | 5.149.253.45:80 | updaterweb.com | HZ Hosting Ltd | CA | malicious |
Domain | IP | Reputation |
---|---|---|
updaterweb.com |
| malicious |
PID | Process | Class | Message |
---|---|---|---|
— | — | A Network Trojan was detected | ET TROJAN APT28/SkinnyBoy Checkin |
— | — | A Network Trojan was detected | ET TROJAN APT28/SkinnyBoy Payload Request |