MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4d81a3c0db4ed8c4a90e61d123577548ec0334cc071671cd6cdb23fc450ae2b. 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: 14


Intelligence 14 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4d81a3c0db4ed8c4a90e61d123577548ec0334cc071671cd6cdb23fc450ae2b
SHA3-384 hash: 1e3356fcc556e2ff5e6d8711166cd2ed6d78d0f90f9b1f7580d53369cbd843d876459cf05186aab211a316c922770974
SHA1 hash: bed120701f37842b4b38fc145253a4386dac07b5
MD5 hash: 36a91779a593be04f8b64cf2870130aa
humanhash: mango-charlie-xray-may
File name:Shipment notice & Invoice82724.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:759'296 bytes
First seen:2024-08-29 10:01:34 UTC
Last seen:2024-09-02 09:16:27 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:x5LegJE7UcXFoKuJ1SwoPRTwoRhBPBCDjjy9+wydb916AafsoW0A:nC7DVoKuJ1S3Jf1/9+BLo
TLSH T1DEF412A82A05D507C945A7790EB2F2F4172D4EDDE801E317AFDDAEEBBD79E020C54281
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
397
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Shipment notice & Invoice82724.exe
Verdict:
Suspicious activity
Analysis date:
2024-08-29 10:27:03 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/ace74e9c-f49f-4de4-92b2-c0922f321b48

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BackDoor.AgentTeslaNET.37.27990.17012.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d04725f1a57bfb7091485a
Tags:
Generic Static Msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/66d0472297cdd8ae02a75100/reports/01b4307d-3e53-4cc9-bec1-073a7ca05925/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/a4d81a3c0db4ed8c4a90e61d123577548ec0334cc071671cd6cdb23fc450ae2b
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/81c5d041-4f06-482f-89af-d3e7d18f9295
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1501097
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Initial sample is a PE file and has a suspicious name
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/a4d81a3c0db4ed8c4a90e61d123577548ec0334cc071671cd6cdb23fc450ae2b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4d81a3c0db4ed8c4a90e61d123577548ec0334cc071671cd6cdb23fc450ae2b/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2024-08-28 12:29:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=utmbupanwtwyysuq4yorenlxkshmam2mybywohgwzwzd7rcqvyvq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/240829-l2tnsavhra/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5b78cf3f-e3fe-4564-967c-b946751c4986
Unpacked files
SH256 hash:
cb0da7e09ab8975e7407182194ff29f2986dea444d724a231e09c9e9dd7fd99c
MD5 hash:
104e6a02598b3cb01356802f12d6994c
SHA1 hash:
bb60c8ab67010a4147d7f43dbb1efb417bd4cef7
Link:
https://www.unpac.me/results/9f51aae8-ff06-4d2c-aa94-f23374cccfcb/
SH256 hash:
640da4bc859d8e6887a356130663dea78a197af60ae373ceb7b943f3de987252
MD5 hash:
88919861b061be28988489b4f47251a9
SHA1 hash:
45b27c3c6538e472b73f28ed10df9359f0dd4589
Link:
https://www.unpac.me/results/9f51aae8-ff06-4d2c-aa94-f23374cccfcb/
SH256 hash:
6961e640fbe5c57904ea6b8b6b5ba91971642021c46bfcb36838e2a86fb0b513
MD5 hash:
8ba5ba0b65f7999d2387b320ee6b0082
SHA1 hash:
27a23ba98fae1ee9bcbc945cb3c59e7b94216a57
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/9f51aae8-ff06-4d2c-aa94-f23374cccfcb/
SH256 hash:
0371f633031157d98c883966e6c94a336700f5b66239bf96af10b571d059cbc9
MD5 hash:
29242cc49aa936795ada426e892c76b0
SHA1 hash:
45cfd75860f19a8fbbd79180a75c06280c79e663
Detections:
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Link:
https://www.unpac.me/results/9f51aae8-ff06-4d2c-aa94-f23374cccfcb/
Parent samples :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 hash:
a4d81a3c0db4ed8c4a90e61d123577548ec0334cc071671cd6cdb23fc450ae2b
MD5 hash:
36a91779a593be04f8b64cf2870130aa
SHA1 hash:
bed120701f37842b4b38fc145253a4386dac07b5
Link:
https://www.unpac.me/results/9f51aae8-ff06-4d2c-aa94-f23374cccfcb/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a4d81a3c0db4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

Executable exe a4d81a3c0db4ed8c4a90e61d123577548ec0334cc071671cd6cdb23fc450ae2b

(this sample)

  
Delivery method
Distributed via e-mail attachment

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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