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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:

Trojans are a group of malicious programs distinguished by their ability to masquerade as benign software. Depending on their type, trojans possess a variety of capabilities, ranging from maintaining full remote control over the victim’s machine to stealing data and files, as well as dropping other malware. At the same time, the main functionality of each trojan family can differ significantly depending on its type. The most common trojan infection chain starts with a phishing email.

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Analysis date: June 07, 2021, 10:20:59
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
trojan
skinnyboy
apt28
backdoor
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

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Loads dropped or rewritten executable

      • SearchProtocolHost.exe (PID: 3112)

    • Connects to CnC server

      • rundll32.exe (PID: 440)

  • SUSPICIOUS

    • Uses SYSTEMINFO.EXE to read environment

      • rundll32.exe (PID: 440)

    • Uses TASKLIST.EXE to query information about running processes

      • rundll32.exe (PID: 440)

  • INFO

    • Loads main object executable

      • rundll32.exe (PID: 440)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

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

Subsystem: Windows GUI
SubsystemVersion: 5.1
ImageVersion: -
OSVersion: 5.1
EntryPoint: 0x3365
UninitializedDataSize: -
InitializedDataSize: 41984
CodeSize: 38400
LinkerVersion: 11
PEType: PE32
TimeStamp: 2021:04:06 13:43:16+02:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 06-Apr-2021 11:43:16

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: 0x000000E0

PE Headers

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:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_DLL
  • IMAGE_FILE_EXECUTABLE_IMAGE

Sections

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

Imports

ADVAPI32.dll
CRYPT32.dll
KERNEL32.dll
SHELL32.dll
SHLWAPI.dll
USER32.dll
WININET.dll

Exports

Title
Ordinal
Address
RunMod
1
0x00001D90
No data.
screenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
43
Monitored processes
4
Malicious processes
0
Suspicious processes
1

Behavior graph

Click at the process to see the details
start searchprotocolhost.exe no specs rundll32.exe systeminfo.exe no specs tasklist.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
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
Version:
7.00.7600.16385 (win7_rtm.090713-1255)
440"C:\Windows\System32\rundll32.exe" C:\Users\admin\TermSrvClt.dll.exe, #1C:\Windows\System32\rundll32.exe
explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows host process (Rundll32)
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
2820systeminfoC:\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)
3552tasklistC:\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)
Total events
64
Read events
52
Write events
12
Delete events
0

Modification events

(PID) Process:—Key:HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
(PID) Process:—Key:HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E
Operation:writeName:@%SystemRoot%\system32\mlang.dll,-4386
Value:
English (United States)
(PID) Process:(440) rundll32.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Operation:writeName:ProxyEnable
Value:
0
(PID) Process:(440) rundll32.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections
Operation:writeName:SavedLegacySettings
Value:
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
(PID) Process:(440) rundll32.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
0
(PID) Process:(440) rundll32.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
1
(PID) Process:(440) rundll32.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content
Operation:writeName:CachePrefix
Value:
(PID) Process:(440) rundll32.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies
Operation:writeName:CachePrefix
Value:
Cookie:
(PID) Process:(440) rundll32.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History
Operation:writeName:CachePrefix
Value:
Visited:
Executable files
0
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

No data
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
2
TCP/UDP connections
8
DNS requests
1
Threats
0

HTTP requests

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
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
440
rundll32.exe
5.149.253.45:80
updaterweb.com
HZ Hosting Ltd
CA
malicious
440
rundll32.exe
5.149.253.45:443
updaterweb.com
HZ Hosting Ltd
CA
malicious

DNS requests

Domain
IP
Reputation
updaterweb.com
  • 5.149.253.45
malicious

Threats

PID
Process
Class
Message
440
rundll32.exe
A Network Trojan was detected
ET TROJAN APT28/SkinnyBoy Checkin
440
rundll32.exe
A Network Trojan was detected
ET TROJAN APT28/SkinnyBoy Payload Request
No debug info
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Reports
C:\Users\admin\AppData\Local\Microsoft\TerminalServerClient\TermSrvClt.dll