MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b1c4ecf03e71ee2c00deb9b82e805b16adaf5e01691f7d3fd1a972087c7481a. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Formbook


Vendor detections: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6b1c4ecf03e71ee2c00deb9b82e805b16adaf5e01691f7d3fd1a972087c7481a
SHA3-384 hash: 465a08b35723ed000223518bc9e1c1d01feff506fab50df89241251737bea2b960ca8af9d9a996133ed03b441b369976
SHA1 hash: 17854a3512bb58e32a87654294b9d691fa2148fd
MD5 hash: 100c39652e8851d14fdb2a4996fa1341
humanhash: video-india-apart-fanta
File name:100c39652e8851d14fdb2a4996fa1341.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:643'072 bytes
First seen:2021-08-10 13:44:49 UTC
Last seen:2021-08-10 15:47:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 6d1eb0ae82f87b168237eafad920be75 (1 x Formbook)
ssdeep 12288:dImxz1vULk5s9OY9oWKD6eoOLV2CH3eVgT4N:iwJULk29OYRKDHvp2U3e84N
Threatray 6'817 similar samples on MalwareBazaar
TLSH T103D47E2171F07433C2564C7A5C0B0768E96BFF183D8960BEA9FA1D9C5F3A675243B292
dhash icon 100932389ca00100 (1 x Formbook, 1 x RemcosRAT)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
302
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Transfer_form.xlsx
Verdict:
Malicious activity
Analysis date:
2021-08-10 13:25:16 UTC
Tags:
encrypted exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/bb47f472-13dc-4cb1-aad4-8ef56c3c75c4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/177949/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Deleting a recently created file
Launching a process
Running batch commands
Creating a process with a hidden window
Launching cmd.exe command interpreter
Sending a UDP request
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Unauthorized injection to a system process
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/963ac02c-7b9d-4ead-949e-3b6e154419bc
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/830206
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
Creates a thread in another existing process (thread injection)
Creates an undocumented autostart registry key
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Execution from Suspicious Folder
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 462635 Sample: UKaOnLqtkE.exe Startdate: 10/08/2021 Architecture: WINDOWS Score: 100 55 www.opticatervisof.com 2->55 57 www.envirotechpropertiesltd.com 2->57 59 3 other IPs or domains 2->59 85 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->85 87 Malicious sample detected (through community Yara rule) 2->87 89 Antivirus detection for URL or domain 2->89 91 7 other signatures 2->91 10 UKaOnLqtkE.exe 1 24 2->10         started        signatures3 process4 dnsIp5 79 sn-files.fe.1drv.com 10->79 81 pxq5zw.sn.files.1drv.com 10->81 83 onedrive.live.com 10->83 53 C:\Users\Public\Libraries\...\Dxpdkcl.exe, PE32 10->53 dropped 115 Writes to foreign memory regions 10->115 117 Allocates memory in foreign processes 10->117 119 Creates a thread in another existing process (thread injection) 10->119 121 Injects a PE file into a foreign processes 10->121 15 ieinstal.exe 10->15         started        18 cmd.exe 1 10->18         started        20 cmd.exe 1 10->20         started        file6 signatures7 process8 signatures9 125 Modifies the context of a thread in another process (thread injection) 15->125 127 Maps a DLL or memory area into another process 15->127 129 Sample uses process hollowing technique 15->129 131 Queues an APC in another process (thread injection) 15->131 22 explorer.exe 4 5 15->22 injected 26 reg.exe 1 18->26         started        28 conhost.exe 18->28         started        30 cmd.exe 1 20->30         started        32 conhost.exe 20->32         started        process10 dnsIp11 73 www.amazebrowser.com 37.48.65.154, 49748, 80 LEASEWEB-NL-AMS-01NetherlandsNL Netherlands 22->73 75 fanbase.fan 34.102.136.180, 49753, 80 GOOGLEUS United States 22->75 77 3 other IPs or domains 22->77 113 System process connects to network (likely due to code injection or exploit) 22->113 34 Dxpdkcl.exe 16 22->34         started        38 Dxpdkcl.exe 16 22->38         started        40 svchost.exe 1 22->40         started        42 conhost.exe 26->42         started        44 conhost.exe 30->44         started        signatures12 process13 dnsIp14 61 sn-files.fe.1drv.com 34->61 63 pxq5zw.sn.files.1drv.com 34->63 65 onedrive.live.com 34->65 93 Multi AV Scanner detection for dropped file 34->93 95 Machine Learning detection for dropped file 34->95 97 Writes to foreign memory regions 34->97 46 mobsync.exe 34->46         started        49 backgroundTaskHost.exe 1 14 34->49         started        67 sn-files.fe.1drv.com 38->67 69 pxq5zw.sn.files.1drv.com 38->69 71 onedrive.live.com 38->71 99 Allocates memory in foreign processes 38->99 101 Creates a thread in another existing process (thread injection) 38->101 103 Injects a PE file into a foreign processes 38->103 51 secinit.exe 38->51         started        105 Creates an undocumented autostart registry key 40->105 107 Modifies the context of a thread in another process (thread injection) 40->107 109 Maps a DLL or memory area into another process 40->109 111 Tries to detect virtualization through RDTSC time measurements 40->111 signatures15 process16 signatures17 123 Tries to detect virtualization through RDTSC time measurements 46->123
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6b1c4ecf03e71ee2c00deb9b82e805b16adaf5e01691f7d3fd1a972087c7481a/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-08-10 13:45:16 UTC
File Type:
PE (Exe)
Extracted files:
23
AV detection:
19 of 27 (70.37%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=nmoe5tyd44pofqan5onyf2afwfvnv5pac2i7pu75dklsbb6hjana._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
22bd5ba035c9dcdda222f812537d8b49241b50c55042fd3b902ca8b36d17a398
Formbook
760b2466db1fdc2d2c1651a730cfd6c14bfbcbd8f69eeb56ec8426d46784f4b3
Formbook
7f7af3d03481bb68e11a68e958ce6d8e96701a053eaa458e7010a4a85643cad3
Formbook
b875a5e660e0e64042fc182c3739d6916568132cf1cc2f8919abe516ac4cf534
Formbook
be6c146acab77dfb4116c0805a1244c79a5da7393ce8ee582f59ae8c1773e406
Formbook
d30f6c3814efbb4b2e5d9ae0f5d09a4a7ba04cc8a3456590d64cf9bfed279901
Formbook
e6bd5f8475731bcca5f6b74327a68ee4b7fa5b0662521feff1d92424da149151
Formbook
+ 6'807 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:6mam loader persistence rat suricata
Link:
https://tria.ge/reports/210810-8ry1swaewa/
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.mobiessence.com/6mam/
Unpacked files
SH256 hash:
795b2b5d6668147d7924ac96f90741ddc2a2b5003f455fb842b613a286fbf8fc
MD5 hash:
53011b69a7231aea23d66805a681144b
SHA1 hash:
e3d0d157e763c865e79ccc5bedc2fd5fd90413f7
Link:
https://www.unpac.me/results/95155c7d-bb8f-411c-a4da-353e0ec06e7b/
SH256 hash:
afba1e09398d8b16da954805b7f3cfb8b5b3463bd10cf976317cff71e215f0cb
MD5 hash:
c9f393d64399913473d911548b256e29
SHA1 hash:
26aaaff06c974675b00e4ffd96bf252ee970b3da
Link:
https://www.unpac.me/results/95155c7d-bb8f-411c-a4da-353e0ec06e7b/
SH256 hash:
6b1c4ecf03e71ee2c00deb9b82e805b16adaf5e01691f7d3fd1a972087c7481a
MD5 hash:
100c39652e8851d14fdb2a4996fa1341
SHA1 hash:
17854a3512bb58e32a87654294b9d691fa2148fd
Link:
https://www.unpac.me/results/95155c7d-bb8f-411c-a4da-353e0ec06e7b/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/6b1c4ecf03e7/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/6b1c4ecf03e71ee2c00deb9b82e805b16adaf5e01691f7d3fd1a972087c7481a

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EnvVarScheduledTasks
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC (ab)using Environment Variables in Scheduled Tasks
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Formbook

Executable exe 6b1c4ecf03e71ee2c00deb9b82e805b16adaf5e01691f7d3fd1a972087c7481a

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/177949/
  
URLhaus
https://urlhaus.abuse.ch/url/1522105/
  
Delivery method
Distributed via web download

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