File name:

b.dll

Full analysis: https://app.any.run/tasks/2b6a8d77-c3bc-4a4a-9d33-257b3e256641
Verdict: Malicious activity
Threats:

Ransomware is a type of malicious software that locks users out of their system or data using different methods to force them to pay a ransom. Most often, such programs encrypt files on an infected machine and demand a fee to be paid in exchange for the decryption key. Additionally, such programs can be used to steal sensitive information from the compromised computer and even conduct DDoS attacks against affected organizations to pressure them into paying.

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Analysis date: December 08, 2020, 15:53:18
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
ransomware
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
MD5:

E5C83994FB7A6AB58291AC93755D93A6

SHA1:

E393E791368C34CF4AECC87760F3EEE90D946946

SHA256:

B9B71EB04D255B21E3272EEF5F4C15D1C208183748DFAD3569EFD455D87879C6

SSDEEP:

12288:T/+Gw8Ti+QiAyR3jJmMcHMsw6Yb6L1ax6Gb0kqLbdw:T2b8b4Ssw1GS6Gb5qLbd

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

    • Modifies files in Chrome extension folder

      • rundll32.exe (PID: 2728)

    • Writes to a start menu file

      • rundll32.exe (PID: 2728)

    • Actions looks like stealing of personal data

      • rundll32.exe (PID: 2728)

    • Writes file to Word startup folder

      • rundll32.exe (PID: 2728)

    • Steals credentials from Web Browsers

      • rundll32.exe (PID: 2728)

    • Renames files like Ransomware

      • rundll32.exe (PID: 2728)

    • Dropped file may contain instructions of ransomware

      • rundll32.exe (PID: 2728)

  • SUSPICIOUS

    • Creates a directory in Program Files

      • rundll32.exe (PID: 2728)

    • Creates files in the program directory

      • rundll32.exe (PID: 2728)

    • Reads the cookies of Google Chrome

      • rundll32.exe (PID: 2728)

    • Reads the cookies of Mozilla Firefox

      • rundll32.exe (PID: 2728)

    • Creates files like Ransomware instruction

      • rundll32.exe (PID: 2728)

    • Drops a file with a compile date too recent

      • rundll32.exe (PID: 2728)

    • Creates files in the user directory

      • rundll32.exe (PID: 2728)

  • INFO

    • Dropped object may contain TOR URL's

      • rundll32.exe (PID: 2728)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win64 Executable (generic) (64.6)
.dll | Win32 Dynamic Link Library (generic) (15.4)
.exe | Win32 Executable (generic) (10.5)
.exe | Generic Win/DOS Executable (4.6)
.exe | DOS Executable Generic (4.6)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2020:09:18 02:21:45+02:00
PEType: PE32
LinkerVersion: 14
CodeSize: 356864
InitializedDataSize: 454656
UninitializedDataSize: -
EntryPoint: 0x1460
OSVersion: 6
ImageVersion: -
SubsystemVersion: 6
Subsystem: Windows GUI

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 18-Sep-2020 00:21:45
Debug artifacts:
  • M:\sc\p\testbuild.pdb

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: 0x00000100

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 7
Time date stamp: 18-Sep-2020 00:21:45
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
0x000571F9
0x00057200
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.89897
.rdata
0x00059000
0x0000AC4A
0x0000AE00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
3.97261
.data
0x00064000
0x0005FCEC
0x0005E800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
5.63862
.idata
0x000C4000
0x00000C98
0x00000E00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.399
.gfids
0x000C5000
0x00000406
0x00000600
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
1.38194
.00cfg
0x000C6000
0x00000104
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
0.0611629
.reloc
0x000C7000
0x00002CCA
0x00002E00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
5.73118

Imports

KERNEL32.dll

Exports

Title
Ordinal
Address
DllInstall
1
0x00002DC9
DllRegisterServer
2
0x00001573
DllUnregisterServer
3
0x00002162
No data.
screenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
36
Monitored processes
1
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start rundll32.exe

Process information

PID
CMD
Path
Indicators
Parent process
2728"C:\Windows\System32\rundll32.exe" C:\Users\admin\AppData\Local\Temp\b.dll DllRegisterServer --pass2police --fullC:\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
Images
c:\windows\system32\rundll32.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\imagehlp.dll
Total events
19
Read events
19
Write events
0
Delete events
0

Modification events

No data
Executable files
0
Suspicious files
1 411
Text files
717
Unknown types
36

Dropped files

PID
Process
Filename
Type
2728rundll32.exeC:\Users\admin\.oracle_jre_usage\90737d32e3abaa4.timestamp —
MD5:—
SHA256:—
2728rundll32.exeC:\Users\admin\AppData\Local\Adobe\Acrobat\DC\IconCacheRdr.dat —
MD5:—
SHA256:—
2728rundll32.exeC:\Users\admin\AppData\Local\Adobe\Acrobat\DC\IconCacheRdr65536.dat —
MD5:—
SHA256:—
2728rundll32.exeC:\Users\admin\AppData\Local\Adobe\Acrobat\DC\SharedDataEvents —
MD5:—
SHA256:—
2728rundll32.exeC:\Users\admin\AppData\Local\Adobe\Acrobat\DC\UserCache.bin —
MD5:—
SHA256:—
2728rundll32.exeC:\ProgramData\dtb.datbinary
MD5:—
SHA256:—
2728rundll32.exeC:\$Recycle.Bin\S-1-5-21-1302019708-1500728564-335382590-1000\RECOVER-FILES.txttext
MD5:—
SHA256:—
2728rundll32.exeC:\Users\admin\.oracle_jre_usage\90737d32e3abaa4.timestamp.NkAnLWbinary
MD5:—
SHA256:—
2728rundll32.exeC:\Users\admin\RECOVER-FILES.txttext
MD5:—
SHA256:—
2728rundll32.exeC:\Users\admin\AppData\Local\Adobe\AcroCef\DC\Acrobat\Cache\data_0 —
MD5:—
SHA256:—
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
0
DNS requests
0
Threats
0

HTTP requests

No HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

No data

DNS requests

No data

Threats

No threats detected
No debug info