File name:

koko_2.zip

Full analysis: https://app.any.run/tasks/66512fbe-6f17-4c30-8ec2-47f68a319935
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: April 05, 2025, 11:02:24
OS: Windows 10 Professional (build: 19044, 64 bit)
Tags:
auto
stealer
formbook
arch-scr
arch-doc
Indicators:
MIME: application/zip
File info: Zip archive data, at least v1.0 to extract, compression method=store
MD5:

0D4022A964B0AEDFBDC10708FF577616

SHA1:

7EB9431AFA237B78A3FD98A9627A6D445D4E4888

SHA256:

A2B1BCD9E689346391EBBCD73D5535E4F21110B12331EE15126B9CDC537AA870

SSDEEP:

12288:d4jhCCeriRrEyrnhGjy/qxglO9M7+OYrpHuyvi2k5XW6f:uhCCe8rXnhG2/qxglO9M7+BHuyvi2k51

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 has been found (auto)

      • WinRAR.exe (PID: 7768)
      • WinRAR.exe (PID: 7340)
    • Changes the autorun value in the registry

      • reg.exe (PID: 8144)
  • SUSPICIOUS

    • Generic archive extractor

      • WinRAR.exe (PID: 7340)
    • Application launched itself

      • Skype.exe (PID: 7896)
    • Uses REG/REGEDIT.EXE to modify registry

      • Skype.exe (PID: 7896)
    • Reads security settings of Internet Explorer

      • Skype.exe (PID: 7896)
    • Detected use of alternative data streams (AltDS)

      • Skype.exe (PID: 7896)
  • INFO

    • Checks supported languages

      • Skype.exe (PID: 7896)
      • Skype.exe (PID: 7996)
      • Skype.exe (PID: 3900)
      • Skype.exe (PID: 8132)
      • Skype.exe (PID: 8112)
      • Skype.exe (PID: 6972)
    • Manual execution by a user

      • Skype.exe (PID: 7896)
      • WinRAR.exe (PID: 7768)
      • notepad++.exe (PID: 6028)
    • Create files in a temporary directory

      • Skype.exe (PID: 7896)
    • Process checks computer location settings

      • Skype.exe (PID: 3900)
      • Skype.exe (PID: 7896)
      • Skype.exe (PID: 6972)
    • Reads CPU info

      • Skype.exe (PID: 7896)
    • Reads the computer name

      • Skype.exe (PID: 7896)
      • Skype.exe (PID: 8132)
      • Skype.exe (PID: 8112)
      • Skype.exe (PID: 3900)
    • Checks proxy server information

      • Skype.exe (PID: 7896)
    • Creates files or folders in the user directory

      • Skype.exe (PID: 8132)
      • Skype.exe (PID: 3900)
      • Skype.exe (PID: 7896)
    • Reads the software policy settings

      • Skype.exe (PID: 7896)
    • Reads the machine GUID from the registry

      • Skype.exe (PID: 7896)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.zip | ZIP compressed archive (100)

EXIF

ZIP

ZipRequiredVersion: 10
ZipBitFlag: -
ZipCompression: None
ZipModifyDate: 2025:04:05 13:02:10
ZipCRC: 0x9430aa8a
ZipCompressedSize: 8
ZipUncompressedSize: 8
ZipFileName: bnb.txt
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
152
Monitored processes
25
Malicious processes
3
Suspicious processes
1

Behavior graph

Click at the process to see the details
start #FORMBOOK winrar.exe no specs sppextcomobj.exe no specs slui.exe no specs #FORMBOOK winrar.exe no specs skype.exe skype.exe no specs skype.exe no specs skype.exe reg.exe conhost.exe no specs skype.exe no specs reg.exe no specs conhost.exe no specs notepad++.exe no specs reg.exe no specs conhost.exe no specs reg.exe no specs conhost.exe no specs reg.exe no specs conhost.exe no specs reg.exe no specs conhost.exe no specs reg.exe no specs conhost.exe no specs skype.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
960C:\WINDOWS\system32\reg.exe QUERY HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\http\UserChoice /v ProgIdC:\Windows\SysWOW64\reg.exeSkype.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Registry Console Tool
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\reg.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcrt.dll
1056\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exereg.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Console Window Host
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
3900"C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exe" --type=renderer --user-data-dir="C:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop" --app-user-model-id=Microsoft.Skype.SkypeDesktop --app-path="C:\Program Files (x86)\Microsoft\Skype for Desktop\resources\app.asar" --no-sandbox --no-zygote --autoplay-policy=no-user-gesture-required --disable-background-timer-throttling --ms-disable-indexeddb-transaction-timeout --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=4 --mojo-platform-channel-handle=2928 --field-trial-handle=2144,i,8071214511780435576,5958290393744846903,131072 --enable-features=WinUseBrowserSpellChecker,WinUseHybridSpellChecker,WinrtGeolocationImplementation --disable-features=SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand --skype-process-type=Main --skype-window-id=__MAIN_ROOT_VIEW_ID__ /prefetch:1C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exeSkype.exe
User:
admin
Company:
Skype Technologies S.A.
Integrity Level:
MEDIUM
Description:
Skype
Version:
8.104.0.207
Modules
Images
c:\program files (x86)\microsoft\skype for desktop\skype.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\acgenral.dll
4000C:\WINDOWS\system32\reg.exe QUERY "HKLM\Software\Microsoft\Windows\CurrentVersion\App Paths\msedge.exe" /veC:\Windows\SysWOW64\reg.exeSkype.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Registry Console Tool
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\reg.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcrt.dll
5048\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exereg.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Console Window Host
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
6028"C:\Program Files\Notepad++\notepad++.exe" "C:\Users\admin\Desktop\Potwierdzenie Przekazu-17-Marca-2025.js.bin"C:\Program Files\Notepad++\notepad++.exeexplorer.exe
User:
admin
Company:
Don HO don.h@free.fr
Integrity Level:
MEDIUM
Description:
Notepad++ : a free (GNU) source code editor
Exit code:
0
Version:
7.91
Modules
Images
c:\program files\notepad++\notepad++.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
6048C:\WINDOWS\system32\reg.exe QUERY HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\microsoft-edge\UserChoice /v ProgIdC:\Windows\SysWOW64\reg.exeSkype.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Registry Console Tool
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\reg.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcrt.dll
6972"C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exe" --type=renderer --user-data-dir="C:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop" --app-user-model-id=Microsoft.Skype.SkypeDesktop --app-path="C:\Program Files (x86)\Microsoft\Skype for Desktop\resources\app.asar" --no-sandbox --no-zygote --enable-blink-features --disable-blink-features --autoplay-policy=no-user-gesture-required --disable-background-timer-throttling --ms-disable-indexeddb-transaction-timeout --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=3964 --field-trial-handle=2144,i,8071214511780435576,5958290393744846903,131072 --enable-features=WinUseBrowserSpellChecker,WinUseHybridSpellChecker,WinrtGeolocationImplementation --disable-features=SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand /prefetch:1C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exeSkype.exe
User:
admin
Company:
Skype Technologies S.A.
Integrity Level:
MEDIUM
Description:
Skype
Version:
8.104.0.207
Modules
Images
c:\program files (x86)\microsoft\skype for desktop\skype.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\acgenral.dll
7176C:\WINDOWS\system32\reg.exe QUERY HKCU\Software\Microsoft\Skype /v RestartForUpdateC:\Windows\SysWOW64\reg.exeSkype.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Registry Console Tool
Exit code:
1
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\reg.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcrt.dll
7232\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exereg.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Console Window Host
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
Total events
7 963
Read events
7 927
Write events
18
Delete events
18

Modification events

(PID) Process:(7340) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:3
Value:
C:\Users\admin\Desktop\preferences.zip
(PID) Process:(7340) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:2
Value:
C:\Users\admin\Desktop\chromium_ext.zip
(PID) Process:(7340) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:1
Value:
C:\Users\admin\Desktop\omni_23_10_2024_.zip
(PID) Process:(7340) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:0
Value:
C:\Users\admin\Desktop\koko_2.zip
(PID) Process:(7340) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:name
Value:
120
(PID) Process:(7340) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:size
Value:
80
(PID) Process:(7340) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:type
Value:
120
(PID) Process:(7340) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:mtime
Value:
100
(PID) Process:(7768) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:3
Value:
C:\Users\admin\Desktop\chromium_ext.zip
(PID) Process:(7768) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:2
Value:
C:\Users\admin\Desktop\omni_23_10_2024_.zip
Executable files
0
Suspicious files
27
Text files
14
Unknown types
0

Dropped files

PID
Process
Filename
Type
7340WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$DRa7340.26559\koko.zipcompressed
MD5:0E316EDC63EADB07167ED3E2B8DC16D8
SHA256:A5C0219B3BCAF7D49C44118B964B4A648394EABE3D11B97E111D9DCE341FF730
7896Skype.exeC:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop\Local Storage\leveldb\LOG.oldtext
MD5:46EED8B7CAAD25F7F453617DA0FB0857
SHA256:5BC1DE0E32F2969386351B2BE088F13B6CC3DF7693EE9E92FEEF59DB6AF1FB92
7896Skype.exeC:\Users\admin\AppData\Roaming\Microsoft\Spelling\en-US\default.acltext
MD5:F3B25701FE362EC84616A93A45CE9998
SHA256:B3D510EF04275CA8E698E5B3CBB0ECE3949EF9252F0CDC839E9EE347409A2209
7896Skype.exeC:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop\ecscache.jsonbinary
MD5:9727DC5F725A0B8E6FA7AA2B5CE538C0
SHA256:BCF0161E1F71324BAD1F8BF370A580E4C1B4F7AA641704E37DEF059B37B0F277
8132Skype.exeC:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop\Cache\Cache_Data\f_000001binary
MD5:B940C613A117EBF3624D2C412E9C40B3
SHA256:D24A184CFBDD2788B591AD541F7D59189F1D80818EBC450B7B169EF0984BD6FA
7896Skype.exeC:\Users\admin\AppData\Roaming\Microsoft\Spelling\en-US\default.exctext
MD5:F3B25701FE362EC84616A93A45CE9998
SHA256:B3D510EF04275CA8E698E5B3CBB0ECE3949EF9252F0CDC839E9EE347409A2209
6028notepad++.exeC:\Users\admin\AppData\Roaming\Notepad++\shortcuts.xmltext
MD5:F11D96162BC521F5CF49FFE6B6841C9B
SHA256:BE9AEAEAB5A2E4899BA7E582274BA592C1B9BAF688B340A754B8EF32B23CFA9C
6028notepad++.exeC:\Users\admin\AppData\Roaming\Notepad++\plugins\config\converter.initext
MD5:F70F579156C93B097E656CABA577A5C9
SHA256:B926498A19CA95DC28964B7336E5847107DD3C0F52C85195C135D9DD6CA402D4
6028notepad++.exeC:\Users\admin\AppData\Roaming\Notepad++\stylers.xmlxml
MD5:312281C4126FA897EF21A7E8CCB8D495
SHA256:53B4BE3ED1CFD712E53542B30CFE30C5DB35CC48BE7C57727DFEC26C9E882E90
7896Skype.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\FTKU8BREFZLVEK0OSQBS.tempbinary
MD5:5894B78E407AB02BF86E3762125C8994
SHA256:
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
32
DNS requests
29
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
GET
200
23.216.77.20:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
whitelisted
GET
200
23.216.77.20:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
whitelisted
7836
SIHClient.exe
GET
200
2.23.246.101:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
unknown
whitelisted
7836
SIHClient.exe
GET
200
2.23.246.101:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
whitelisted
6544
svchost.exe
GET
200
2.17.190.73:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
4
System
192.168.100.255:137
whitelisted
2104
svchost.exe
40.127.240.158:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
40.127.240.158:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
23.216.77.20:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
4
System
192.168.100.255:138
whitelisted
3216
svchost.exe
20.7.2.167:443
client.wns.windows.com
MICROSOFT-CORP-MSN-AS-BLOCK
US
whitelisted
6544
svchost.exe
40.126.31.2:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
6544
svchost.exe
2.17.190.73:80
ocsp.digicert.com
AKAMAI-AS
DE
whitelisted
2112
svchost.exe
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
2104
svchost.exe
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 40.127.240.158
  • 4.231.128.59
whitelisted
crl.microsoft.com
  • 23.216.77.20
  • 23.216.77.6
  • 23.216.77.28
whitelisted
google.com
  • 142.250.186.110
whitelisted
client.wns.windows.com
  • 20.7.2.167
whitelisted
login.live.com
  • 40.126.31.2
  • 20.190.159.75
  • 20.190.159.73
  • 40.126.31.0
  • 20.190.159.131
  • 20.190.159.130
  • 40.126.31.1
  • 40.126.31.73
  • 20.190.160.22
  • 20.190.160.67
  • 40.126.32.74
  • 20.190.160.64
  • 20.190.160.3
  • 20.190.160.131
  • 40.126.32.140
  • 40.126.32.138
whitelisted
ocsp.digicert.com
  • 2.17.190.73
whitelisted
get.skype.com
  • 52.113.194.133
whitelisted
a.config.skype.com
  • 13.107.42.16
whitelisted
pipe.skype.com
  • 51.104.15.253
whitelisted
download.skype.com
  • 95.100.184.209
whitelisted

Threats

No threats detected
No debug info