MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac56d91f9e736d3354f645796d5e476cb29a60c1fe69593cb17ceba515e97038. 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 14 File information Comments
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SHA256 hash: ac56d91f9e736d3354f645796d5e476cb29a60c1fe69593cb17ceba515e97038
SHA3-384 hash: 5646ed1a48ddd76bd5b0d958081bd978e9d6e9a2a22758bf8d82ddc9b4e47a3d1c85fd728c5041efc257db114c2769c5
SHA1 hash: 30c103a04b06d67b74c008a096842ed2823ac002
MD5 hash: aaf817515d979805f44294a29c78adc0
humanhash: mobile-massachusetts-lithium-earth
File name:SecuriteInfo.com.W32.MSIL_Kryptik.KXQ.gen.Eldorado.28696.3484
Download: download sample
Signature Formbook
Create hunting rule
File size:558'080 bytes
First seen:2024-05-02 10:22:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:wics0++abCeHijXH8cuq4zZH83jn2PbF8L50q:0X++irijXccuq41H83iPbOL5
TLSH T15EC4E184B7EC0386F0FA6A36387448149F72B49F8571D64E4966319F29FAF41C922F27
TrID 35.4% (.EXE) Win64 Executable (generic) (10523/12/4)
22.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.1% (.EXE) Win32 Executable (generic) (4504/4/1)
6.9% (.ICL) Windows Icons Library (generic) (2059/9)
6.8% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
463
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ac56d91f9e736d3354f645796d5e476cb29a60c1fe69593cb17ceba515e97038.exe
Verdict:
Malicious activity
Analysis date:
2024-05-02 10:23:52 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/64932306-fb54-48cd-abd5-f6b03a345df3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.KXQ.gen.Eldorado.28696.3484.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
fingerprint lolbin masquerade msbuild packed stealer
Link:
https://www.filescan.io/uploads/663369889cdc03b57aba733d/reports/f3b34413-893a-42f6-8bb4-8e0dd679461f/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/ac56d91f9e736d3354f645796d5e476cb29a60c1fe69593cb17ceba515e97038
Malware family:
Malicious Packer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/35222445-8b6d-466c-aab5-d1118aa84791
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1435276
Signature
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ac56d91f9e736d3354f645796d5e476cb29a60c1fe69593cb17ceba515e97038
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ac56d91f9e736d3354f645796d5e476cb29a60c1fe69593cb17ceba515e97038/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2024-05-02 09:32:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vrlnsh46onwtgvhwiv4w2xshnszjuygb7zuvspfrptv2kfpjoa4a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/240502-mesnmsgh86/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
b7af4d60ebf5f4e8d5bbb59472d011980bcc27c73f2c07fcc99c697f7e83eb31
MD5 hash:
7628d717f4ab93b5b3ea56de6408f260
SHA1 hash:
b1187f014f819f9e863eb6266c5d3fe5ed059664
Link:
https://www.unpac.me/results/19b22389-86db-48e2-8d68-f97dbb7f82e1/
SH256 hash:
4b6ddecb4cdc7445fa5a0b99f853d56f7b9f75d792f92611382324fec3e2e59b
MD5 hash:
12aa99d1f0ae5eb9e0559dd283b24c71
SHA1 hash:
9614dab65146cc8bf3a75918a09e6d60569d7b37
Link:
https://www.unpac.me/results/19b22389-86db-48e2-8d68-f97dbb7f82e1/
SH256 hash:
45c7b64a55dca23ee1239649e03a7c361813dbcfc2a0817b0d8e94c907d6ed4b
MD5 hash:
fb1bc19121c4e190d83672bc71b493f0
SHA1 hash:
c3488b969ba578e28ee360be24b6416425a224a0
Link:
https://www.unpac.me/results/19b22389-86db-48e2-8d68-f97dbb7f82e1/
SH256 hash:
68540c5549d3b2067ce3cdf11b2b5b3306ada787669b27a22404645b2c59c876
MD5 hash:
a0d0bc0777e05eaefba872c201048f5d
SHA1 hash:
295af22b778c2bc5f6b8ee9cff320f3725c890bd
Detections:
MALWARE_Win_DLInjector02
Create hunting rule
Link:
https://www.unpac.me/results/19b22389-86db-48e2-8d68-f97dbb7f82e1/
SH256 hash:
ac56d91f9e736d3354f645796d5e476cb29a60c1fe69593cb17ceba515e97038
MD5 hash:
aaf817515d979805f44294a29c78adc0
SHA1 hash:
30c103a04b06d67b74c008a096842ed2823ac002
Link:
https://www.unpac.me/results/19b22389-86db-48e2-8d68-f97dbb7f82e1/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ac56d91f9e73/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ac56d91f9e736d3354f645796d5e476cb29a60c1fe69593cb17ceba515e97038

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:kevoreilly
Description:Formbook Payload
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Web download

Formbook

Executable exe ac56d91f9e736d3354f645796d5e476cb29a60c1fe69593cb17ceba515e97038

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2834809/
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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