MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cd1a6d25a6ecd13b937b860ddbe024fa1927d9ca766121d54eac046c5511cad4. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: cd1a6d25a6ecd13b937b860ddbe024fa1927d9ca766121d54eac046c5511cad4
SHA3-384 hash: 3425cb2c7496f7e2d1776ef8a263813d2cbf7570e935dab1060cc99e3ebe5cffd0435b8d775be7068b90ae8da936a821
SHA1 hash: f2b84b76afd3e3c47be10841e7532cf8092564d5
MD5 hash: 69d6376700fcedd8295c6736ac7a121a
humanhash: enemy-massachusetts-solar-spaghetti
File name:vbc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:662'770 bytes
First seen:2021-12-08 14:21:47 UTC
Last seen:2021-12-08 15:31:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla)
ssdeep 12288:gAPWJcmgfrzWpkcFaOAf8nE5Lb0v7vtezD:VtmgjzWucF07Gsn
Threatray 12'323 similar samples on MalwareBazaar
TLSH T1DBE4233E7E89C86BC592497D1A39F338B7B4CA98BC124A4777D63E5F3D326A26C04141
File icon (PE):PE icon
dhash icon 70d4dab092dec6f0 (1 x Formbook)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
143
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
vbc.exe
Verdict:
Malicious activity
Analysis date:
2021-12-08 14:54:13 UTC
Tags:
installer trojan formbook stealer
Link:
https://app.any.run/tasks/83fa6beb-804a-4a84-87c4-012240f4975b

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/212499/
Detection(s):
SecuriteInfo.com.Trojan.Siggen16.1926.25432.23683.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Unauthorized injection to a recently created process
Сreating synchronization primitives
Searching for synchronization primitives
DNS request
Launching a process
Sending a custom TCP request
Launching cmd.exe command interpreter
Sending an HTTP GET request
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/1335/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
75%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/61b0bf8e47ed217c0135d9ce/reports/ef0be869-9e08-47af-b1b8-ff421a1ae9e1/overview
Result
Verdict:
MALICIOUS
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:
Generic Malware
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/feccf70f-728a-48cb-8bec-9f4e6e535cb1
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/903901
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 536379 Sample: vbc.exe Startdate: 08/12/2021 Architecture: WINDOWS Score: 100 31 canonicalizer.ucsuri.tcs 2->31 33 Found malware configuration 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Multi AV Scanner detection for submitted file 2->37 39 2 other signatures 2->39 11 vbc.exe 17 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\extrjocw.dll, PE32 11->29 dropped 49 Tries to detect virtualization through RDTSC time measurements 11->49 51 Injects a PE file into a foreign processes 11->51 15 vbc.exe 11->15         started        signatures6 process7 signatures8 53 Modifies the context of a thread in another process (thread injection) 15->53 55 Maps a DLL or memory area into another process 15->55 57 Sample uses process hollowing technique 15->57 59 Queues an APC in another process (thread injection) 15->59 18 explorer.exe 15->18 injected process9 process10 20 wlanext.exe 18->20         started        signatures11 41 Self deletion via cmd delete 20->41 43 Modifies the context of a thread in another process (thread injection) 20->43 45 Maps a DLL or memory area into another process 20->45 47 Tries to detect virtualization through RDTSC time measurements 20->47 23 cmd.exe 1 20->23         started        25 explorer.exe 147 20->25         started        process12 process13 27 conhost.exe 23->27         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/cd1a6d25a6ecd13b937b860ddbe024fa1927d9ca766121d54eac046c5511cad4/
Threat name:
Win32.Dropper.Nuldrop
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Status:
Malicious
First seen:
2021-12-08 12:48:17 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
20 of 28 (71.43%)
Threat level:
  3/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1aac9a73533b5745a863e565e556ecc624619b3cecb917c9e8aee7b141976bb2
Formbook
5ce12b1abf4c0139a9022d549dafff88c441fbc7127d240cc78ecbd0608d2328
Formbook
7bfabb3e53f70e2ad39155a8af8d7e27a07ec01b0ba8faed52cb569e4f78142f
Formbook
8a0fb297baf6f3affb73e0c20116dec0bbbae0292fcbffc3948051555df5099d
Formbook
8e405b6451c62462b5df1a0490175f4b9712ee1b1ab25a52f7e3a1f736400439
Formbook
99ce2e68255b2f3b1ee1934af1eacd280a096adaedcaa2df1f03e8d9ee01e860
Formbook
c1657f01ccef85f3f46740a96704bc5dccfb4cf8fc9ac09abcfd7aa6660448f7
Formbook
ce5ef050cbfe862b46edb70c1d3ee90b1fc3940ef93ee7fffe642589673d331b
Formbook
e630a2d0f63e21c38730606f15825c625d37eb1ff5b038724b403a1f72c591ec
Formbook
+ 12'313 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:ea0r loader rat
Link:
https://tria.ge/reports/211208-rpks1afgd8/
Behaviour
Gathers network information
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Uses the VBS compiler for execution
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.asiapubz-hk.com/ea0r/
Unpacked files
SH256 hash:
cd1a6d25a6ecd13b937b860ddbe024fa1927d9ca766121d54eac046c5511cad4
MD5 hash:
69d6376700fcedd8295c6736ac7a121a
SHA1 hash:
f2b84b76afd3e3c47be10841e7532cf8092564d5
Link:
https://www.unpac.me/results/34c37240-ee35-465e-8b2c-54ded74179ec/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.33
Link:
https://yomi.yoroi.company/submissions/cd1a6d25a6ecd13b937b860ddbe024fa1927d9ca766121d54eac046c5511cad4

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_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.

  
Delivery method
Other
  
URLhaus
https://urlhaus.abuse.ch/url/1862565/
Cape
Cape
https://www.capesandbox.com/analysis/212499/

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