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File name:

57

Full analysis: https://app.any.run/tasks/498ee56f-da90-4443-a828-f8a0e8fb7fc6
Verdict: Malicious activity
Threats:

Quasar is a very popular RAT in the world thanks to its code being available in open-source. This malware can be used to control the victim’s computer remotely.

Analysis date: February 13, 2020, 12:50:49
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
evasion
trojan
rat
quasar
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386, for MS Windows
MD5:

B2D0B59E50F0B83EF4DB47DDDBA19741

SHA1:

4E0700A21829159284D252945D62C07B56199072

SHA256:

5791D0FB77D63E322006CC0AB2C42B02FB4297FE5DF28151246F2E8C0E0B3A23

SSDEEP:

24576:aAHnh+eWsN3skA4RV1Hom2KXSmdajhTlfstrx1h39vCN5MS8XK1ap9zG9cEVPrZB:th+ZkldoPKi2ajL4V9FS8rGKGrGZztK

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

    • Writes to a start menu file

      • 57.exe (PID: 3692)
    • QUASAR was detected

      • MSBuild.exe (PID: 4004)
  • SUSPICIOUS

    • Creates files in the user directory

      • 57.exe (PID: 3692)
      • MSBuild.exe (PID: 4004)
    • Executable content was dropped or overwritten

      • 57.exe (PID: 3692)
    • Checks for external IP

      • MSBuild.exe (PID: 4004)
    • Connects to unusual port

      • MSBuild.exe (PID: 4004)
  • INFO

    • Manual execution by user

      • taskmgr.exe (PID: 3640)
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: 2020:02:12 13:54:11+01:00
PEType: PE32
LinkerVersion: 12
CodeSize: 581632
InitializedDataSize: 1463296
UninitializedDataSize: -
EntryPoint: 0x2800a
OSVersion: 5.1
ImageVersion: -
SubsystemVersion: 5.1
Subsystem: Windows GUI
FileVersionNumber: 696.979.372.172
ProductVersionNumber: 0.0.0.0
FileFlagsMask: 0x0000
FileFlags: (none)
FileOS: Unknown (0)
ObjectFileType: Unknown
FileSubtype: -
LanguageCode: English (U.S.)
CharacterSet: Unicode
FileDescription: Update
OriginalFileName: Update.exe
CompanyName: GitHub
LegalCopyright: Copyright © GitHub 2013-2015
ProductName: Update
ProductVersion: 640, 274, 536, 255

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 12-Feb-2020 12:54:11
Detected languages:
  • English - United Kingdom
  • English - United States
  • French - France
FileDescription: Update
OriginalFilename: Update.exe
CompanyName: GitHub
LegalCopyright: Copyright © GitHub 2013-2015
ProductName: Update
ProductVersion: 640, 274, 536, 255

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: 0x00000110

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 5
Time date stamp: 12-Feb-2020 12:54:11
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_EXECUTABLE_IMAGE
  • IMAGE_FILE_LARGE_ADDRESS_AWARE

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00001000
0x0008DFDD
0x0008E000
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
6.67525
.rdata
0x0008F000
0x0002FD8E
0x0002FE00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
5.76322
.data
0x000BF000
0x00008F74
0x00005200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
1.19638
.rsrc
0x000C8000
0x001291C3
0x00129200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
7.98314
.reloc
0x001F2000
0x00007134
0x00007200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
6.78396

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.40026
1007
Latin 1 / Western European
English - United Kingdom
RT_MANIFEST
2
2.05883
296
Latin 1 / Western European
English - United Kingdom
RT_ICON
3
2.25499
296
Latin 1 / Western European
English - United Kingdom
RT_ICON
4
3.65355
744
Latin 1 / Western European
English - United Kingdom
RT_ICON
5
3.43704
296
Latin 1 / Western European
English - United Kingdom
RT_ICON
6
4.16139
3752
Latin 1 / Western European
English - United Kingdom
RT_ICON
7
3.34702
1428
Latin 1 / Western European
English - United Kingdom
RT_STRING
8
3.2817
1674
Latin 1 / Western European
English - United Kingdom
RT_STRING
9
3.28849
1168
Latin 1 / Western European
English - United Kingdom
RT_STRING
10
3.28373
1532
Latin 1 / Western European
English - United Kingdom
RT_STRING

Imports

ADVAPI32.dll
COMCTL32.dll
COMDLG32.dll
GDI32.dll
IPHLPAPI.DLL
KERNEL32.dll
MPR.dll
OLEAUT32.dll
PSAPI.DLL
SHELL32.dll
No data.
screenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
37
Monitored processes
3
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start 57.exe taskmgr.exe no specs #QUASAR msbuild.exe

Process information

PID
CMD
Path
Indicators
Parent process
3692"C:\Users\admin\AppData\Local\Temp\57.exe" C:\Users\admin\AppData\Local\Temp\57.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
3640"C:\Windows\system32\taskmgr.exe" /4C:\Windows\system32\taskmgr.exeexplorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Task Manager
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
4004"C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v4.0.30319\\\\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
57.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
MSBuild.exe
Version:
4.7.3062.0 built by: NET472REL1
Total events
70
Read events
58
Write events
0
Delete events
0

Modification events

No data
Executable files
1
Suspicious files
1
Text files
2
Unknown types
0

Dropped files

PID
Process
Filename
Type
369257.exeC:\Users\admin\AssignedAccessCsp\AssignedAccessCsp.vbstext
MD5:9BE6F665E392D39683FAE53C0E932728
SHA256:AECB6A962F5E8FEEDF0868D94683B2E4BC10D7111BE5C71E73E9C80B5F18B358
369257.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\AssignedAccessCsp.urltext
MD5:3246B2973F452462FAAD15311AF9C279
SHA256:1220281E974674CCF57B3480C812C232D0E21C0D8F6F89BADF028DE79AFFA7E7
4004MSBuild.exeC:\Users\admin\AppData\Roaming\Logs\02-13-2020binary
MD5:93D396697868149637E3C93A5270F5D6
SHA256:8D0D8663A6AF4BC4EA39C8D55D47BB5CF4B87609F2AE9B20A646408F9EAA981E
369257.exeC:\Users\admin\AssignedAccessCsp\LocationNotificationWindows.exeexecutable
MD5:B2D0B59E50F0B83EF4DB47DDDBA19741
SHA256:5791D0FB77D63E322006CC0AB2C42B02FB4297FE5DF28151246F2E8C0E0B3A23
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
2
DNS requests
2
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
4004
MSBuild.exe
GET
200
208.95.112.1:80
http://ip-api.com/json/
unknown
text
289 b
shared
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
4004
MSBuild.exe
134.209.192.40:6732
wedontgetreversed.duckdns.org
US
suspicious
4004
MSBuild.exe
208.95.112.1:80
ip-api.com
IBURST
malicious

DNS requests

Domain
IP
Reputation
ip-api.com
  • 208.95.112.1
shared
wedontgetreversed.duckdns.org
  • 134.209.192.40
suspicious

Threats

PID
Process
Class
Message
4004
MSBuild.exe
Potential Corporate Privacy Violation
ET POLICY External IP Lookup ip-api.com
4004
MSBuild.exe
Potential Corporate Privacy Violation
AV POLICY Internal Host Retrieving External IP Address (ip-api. com)
4004
MSBuild.exe
A Network Trojan was detected
REMOTE [PTsecurity] Quasar.RAT IP Lookup
Misc activity
ET INFO DYNAMIC_DNS Query to *.duckdns. Domain
4004
MSBuild.exe
A Network Trojan was detected
REMOTE [PTsecurity] Quasar
1 ETPRO signatures available at the full report
No debug info