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File name:

arrrrikfb.exe

Full analysis: https://app.any.run/tasks/1457e337-1169-48e3-8773-44503343eb0f
Verdict: Malicious activity
Threats:

FormBook is a data stealer that is being distributed as a MaaS. FormBook differs from a lot of competing malware by its extreme ease of use that allows even the unexperienced threat actors to use FormBook virus.

Analysis date: June 19, 2019, 10:23:28
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
formbook
trojan
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

9FC28C351D32040104059E11A7984FEA

SHA1:

3E5814120EE95A0DF6FA8251F47D8DA3F8A611ED

SHA256:

5FF8009942C8D11A64221B326487ACDE65A0874B49F63D57F0B0C6BF390FD250

SSDEEP:

6144:eawOeZGSh7oX8yNADuttGfeAamBYsHIt5hqtYWPZH+Kaq3F3p2Lp0KSC5JH5edsW:zXDUCT+HI9qTB+bq3F3I0s5dgqVo

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

    • FORMBOOK was detected

      • explorer.exe (PID: 116)
    • Formbook was detected

      • NAPSTAT.EXE (PID: 3604)
      • Firefox.exe (PID: 3536)
    • Connects to CnC server

      • explorer.exe (PID: 116)
    • Changes the autorun value in the registry

      • NAPSTAT.EXE (PID: 3604)
    • Actions looks like stealing of personal data

      • NAPSTAT.EXE (PID: 3604)
    • Stealing of credential data

      • NAPSTAT.EXE (PID: 3604)
  • SUSPICIOUS

    • Executes scripts

      • arrrrikfb.exe (PID: 728)
    • Starts CMD.EXE for commands execution

      • NAPSTAT.EXE (PID: 3604)
    • Creates files in the user directory

      • NAPSTAT.EXE (PID: 3604)
    • Loads DLL from Mozilla Firefox

      • NAPSTAT.EXE (PID: 3604)
  • INFO

    • Manual execution by user

      • NAPSTAT.EXE (PID: 3604)
    • Creates files in the user directory

      • Firefox.exe (PID: 3536)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Generic CIL Executable (.NET, Mono, etc.) (62)
.exe | Win64 Executable (generic) (23.3)
.dll | Win32 Dynamic Link Library (generic) (5.5)
.exe | Win32 Executable (generic) (3.8)
.exe | Win16/32 Executable Delphi generic (1.7)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2019:05:12 22:18:37+02:00
PEType: PE32
LinkerVersion: 8
CodeSize: 269824
InitializedDataSize: 691200
UninitializedDataSize: -
EntryPoint: 0x43dde
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 12-May-2019 20:18:37
Detected languages:
  • English - United States
  • German - Germany
Debug artifacts:
  • C:\xampp\htdocs\Aspire\files\markcooperate_vIcwEYNEXrPMfAys\vIcwEYNEXrPMfAysma.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: 0x00000080

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 3
Time date stamp: 12-May-2019 20:18:37
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_EXECUTABLE_IMAGE

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00002000
0x00041DE4
0x00041E00
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.93937
.rsrc
0x00044000
0x000A8964
0x000A8A00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
5.64644
.reloc
0x000EE000
0x0000000C
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.10191

Resources

Title
Entropy
Size
Codepage
Language
Type
0
2.69055
90
Latin 1 / Western European
English - United States
RT_GROUP_ICON
1
2.25632
270376
Latin 1 / Western European
English - United States
RT_ICON
2
4.21757
1128
Latin 1 / Western European
English - United States
RT_ICON
3
3.17718
9640
Latin 1 / Western European
English - United States
RT_ICON
4
3.57015
4264
Latin 1 / Western European
English - United States
RT_ICON
5
2.51177
67624
Latin 1 / Western European
English - United States
RT_ICON
6
2.93647
16936
Latin 1 / Western European
English - United States
RT_ICON
119
7.83374
320000
Latin 1 / Western European
German - Germany
RT_HTML

Imports

mscoree.dll
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
38
Monitored processes
6
Malicious processes
3
Suspicious processes
0

Behavior graph

Click at the process to see the details
start arrrrikfb.exe no specs vbc.exe no specs #FORMBOOK napstat.exe cmd.exe no specs #FORMBOOK explorer.exe #FORMBOOK firefox.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
728"C:\Users\admin\Desktop\arrrrikfb.exe" C:\Users\admin\Desktop\arrrrikfb.exeexplorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
2176"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exearrrrikfb.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Visual Basic Command Line Compiler
Exit code:
0
Version:
8.0.50727.5420
3604"C:\Windows\System32\NAPSTAT.EXE"C:\Windows\System32\NAPSTAT.EXE
explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Network Access Protection Client UI
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
2348/c del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"C:\Windows\System32\cmd.exeNAPSTAT.EXE
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Command Processor
Exit code:
0
Version:
6.1.7601.17514 (win7sp1_rtm.101119-1850)
116C:\Windows\Explorer.EXEC:\Windows\explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Explorer
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
3536"C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe
NAPSTAT.EXE
User:
admin
Company:
Mozilla Corporation
Integrity Level:
MEDIUM
Description:
Firefox
Exit code:
0
Version:
65.0.2
Total events
867
Read events
865
Write events
2
Delete events
0

Modification events

(PID) Process:(116) explorer.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Action Center\Checks\{C8E6F269-B90A-4053-A3BE-499AFCEC98C4}.check.0
Operation:writeName:CheckSetting
Value:
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
(PID) Process:(3604) NAPSTAT.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:VNX8AR58_L
Value:
C:\Program Files\Oq4nhrht8\ttvhht5jd.exe
Executable files
0
Suspicious files
80
Text files
1
Unknown types
0

Dropped files

PID
Process
Filename
Type
3604NAPSTAT.EXEC:\Users\admin\AppData\Roaming\1K12621E\1K1logrc.inibinary
MD5:5006D04B1F6E422ECA8F645E21CDBA19
SHA256:5C5015428123CD8F48B5AB6BB0C7361F2CAE274A76E3C1EE73EBEF3441321D3F
3604NAPSTAT.EXEC:\Users\admin\AppData\Roaming\1K12621E\1K1logim.jpegimage
MD5:8D6BB270CBF8A5B3540EA76A6D88B257
SHA256:DD78AFC5233D26BE5FE2EF32DFDFEFABB60A4B78EC16B06D3C4800B127D2D205
3604NAPSTAT.EXEC:\Users\admin\AppData\Roaming\1K12621E\1K1logri.inibinary
MD5:D63A82E5D81E02E399090AF26DB0B9CB
SHA256:EAECE2EBA6310253249603033C744DD5914089B0BB26BDE6685EC9813611BAAE
3604NAPSTAT.EXEC:\Users\admin\AppData\Roaming\1K12621E\1K1logrv.inibinary
MD5:BA3B6BC807D4F76794C4B81B09BB9BA5
SHA256:6EEBF968962745B2E9DE2CA969AF7C424916D4E3FE3CC0BB9B3D414ABFCE9507
3536Firefox.exeC:\Users\admin\AppData\Roaming\1K12621E\1K1logrf.inibinary
MD5:2F245469795B865BDD1B956C23D7893D
SHA256:1662D01A2D47B875A34FC7A8CD92E78CB2BA7F34023C7FD2639CBB10B8D94361
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
4
TCP/UDP connections
5
DNS requests
2
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
116
explorer.exe
GET
203.114.74.40:80
http://www.pusatsmm.com/ar/?Ar2=gOx7O1z2CjtaijW956sY5IrcYtxDr7OExHMplX/42EW9GCoglEXvl1kys2Do4fqG2uQPsg==&_jG4N=hBclaNlx48&sql=1
ID
malicious
116
explorer.exe
GET
404
66.96.147.159:80
http://www.testci20190222014255.com/ar/?Ar2=neWfLw9/OV85BjCM5wKXxzwoM+tcf9ODCfGOAYwIRkfGa2VdmKGkY1/wCxRVVc99xyXOYg==&_jG4N=hBclaNlx48
US
html
863 b
malicious
116
explorer.exe
POST
203.114.74.40:80
http://www.pusatsmm.com/ar/
ID
malicious
116
explorer.exe
POST
203.114.74.40:80
http://www.pusatsmm.com/ar/
ID
malicious
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
116
explorer.exe
66.96.147.159:80
www.testci20190222014255.com
The Endurance International Group, Inc.
US
malicious
116
explorer.exe
203.114.74.40:80
www.pusatsmm.com
NewMedia Express Pte Ltd
ID
malicious

DNS requests

Domain
IP
Reputation
www.testci20190222014255.com
  • 66.96.147.159
malicious
www.pusatsmm.com
  • 203.114.74.40
malicious

Threats

PID
Process
Class
Message
116
explorer.exe
A Network Trojan was detected
MALWARE [PTsecurity] FormBook CnC Checkin (GET)
116
explorer.exe
A Network Trojan was detected
MALWARE [PTsecurity] FormBook CnC Checkin (GET)
116
explorer.exe
A Network Trojan was detected
MALWARE [PTsecurity] TrojanSpy:FormBook CnC Checkin (POST)
116
explorer.exe
A Network Trojan was detected
MALWARE [PTsecurity] FormBook CnC Checkin (POST)
116
explorer.exe
A Network Trojan was detected
MALWARE [PTsecurity] FormBook CnC Checkin (POST)
2 ETPRO signatures available at the full report
No debug info