MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4eef5964d4be888f65a3410d0f60fd3559021aff06bf1448c919e294b7ecb72e. 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: 19


Intelligence 19 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4eef5964d4be888f65a3410d0f60fd3559021aff06bf1448c919e294b7ecb72e
SHA3-384 hash: 95f176e1d0aeeb2db49c4e1620e9f60ed7753d32436aae92010a99b9d6f305b4a60e61e0ac66565602d9700f18727f60
SHA1 hash: 834b76a6210e1793b9717b59b120e5d538aefddc
MD5 hash: 19ee7c1c75bfd372abf0aa5474812e22
humanhash: washington-crazy-hawaii-indigo
File name:PurchaseOrder00038959739.scr
Download: download sample
Signature Formbook
Create hunting rule
File size:1'101'312 bytes
First seen:2026-01-14 10:37:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 24576:xQTNuCfQGCkxhYPiuDv9PtSX9Ump0iu5gSj68oKgf4:aTQCf9sPi2h4X9Uqd6rjyKg
Threatray 2'537 similar samples on MalwareBazaar
TLSH T11C35121FBB95B6A1CE090F73C643115881F0C426E661F7DA08DE58FA0D9AF90C84FA67
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
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 threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
124
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
DeepSea
Details
DeepSea
DeepSea decrypted strings
Link:
https://research.acce.ciphertechsolutions.com/results/aebf7550-0fc6-43be-a5de-b88b04b4cab4/
Malware family:
formbook
Create hunting rule
ID:
1
File name:
5cb9997ec12c8f1c0acc7d60df08e8649846356c3c4ecee31a04891f4de01c4e.zip
Verdict:
Malicious activity
Analysis date:
2026-01-14 07:16:17 UTC
Tags:
arch-exec formbook xloader stealer
Link:
https://app.any.run/tasks/35c208d2-e22e-4896-bdd2-487fb56562c7

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/48862/
Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=696742c157243ef151cd0f2e
Tags:
malware
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
krypt masquerade obfuscated obfuscated packed vbnet
Link:
https://www.filescan.io/uploads/696771e560d1ef876def23f5/reports/7043fb4e-bd56-41ca-abe4-e24e9148be30/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4eef5964d4be888f65a3410d0f60fd3559021aff06bf1448c919e294b7ecb72e
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-01-14T02:01:00Z UTC
Last seen:
2026-01-16T08:36:00Z UTC
Hits:
~1000
Detections:
HEUR:Trojan-Spy.MSIL.Noon.gen Trojan.MSIL.Crypt.sb Trojan-Spy.Noon.HTTP.ServerRequest Backdoor.Agent.HTTP.C&C Trojan-Spy.Win32.Noon.sb Trojan.MSIL.Inject.sb VHO:Trojan-PSW.MSIL.Agent.gen Trojan-PSW.Win32.Stealer.sb PDM:Trojan.Win32.Generic
Link:
https://opentip.kaspersky.com/4eef5964d4be888f65a3410d0f60fd3559021aff06bf1448c919e294b7ecb72e/results?tab=lookup
Malware family:
KeyBase
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/86d4a9fb-8d13-44ae-8122-f7d0205acdc2
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1850497
Signature
.NET source code contains very large array initializations
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
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/4eef5964d4be888f65a3410d0f60fd3559021aff06bf1448c919e294b7ecb72e
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.44 Win 32 Exe x86
Link:
https://app.malva.re/file/19ee7c1c75bfd372abf0aa5474812e22
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4eef5964d4be888f65a3410d0f60fd3559021aff06bf1448c919e294b7ecb72e/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2026-01-14 06:50:44 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j3xvszgux2ei6zndiegq6yh5gvmqegx7a27risgjdhrjjn7mw4xa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
172c3076e5d6bfe9089a1e092d1286e77337bc3680db32539e3a7bf69b7d0560
Formbook
205a12c55fed683b2687a61297c8c295a3175533171d29e929969ae3627ca10b
Formbook
3671a3f885f39f3793f4c88e8a54005b466e1e9b20f2a91d069cea42e25703b3
Formbook
4eef5964d4be888f65a3410d0f60fd3559021aff06bf1448c919e294b7ecb72e
Formbook
4f5dd07e22dc81e6a7c8eb30577dbd55887208d2ec9a4140153c4092a70ded85
Formbook
8c07a168b11c30dffb306605a02039ca58803c7fb511127f673d29f84d57bd37
Formbook
9a79193b40c2ec6accfa36696cdad711db7b4ca0d1dec4b1158d4b461017dedc
Formbook
b26c70dbbd9018430b9fd3c363cbd318a388516115e9048aaa0208c4f1472bc7
Formbook
dc868203fe63fc8e75865fcfe43849fc1a4fd6a845416dee9497834b158669eb
Formbook
df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3
Formbook
error
Formbook
+ 2'527 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260114-mn1qlsd13a/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/7d2070bb-2f45-4bcd-9605-0a2ca5812034
Unpacked files
SH256 hash:
4eef5964d4be888f65a3410d0f60fd3559021aff06bf1448c919e294b7ecb72e
MD5 hash:
19ee7c1c75bfd372abf0aa5474812e22
SHA1 hash:
834b76a6210e1793b9717b59b120e5d538aefddc
Link:
https://www.unpac.me/results/61f42aef-161f-4949-a1ec-2d3833108d77/
SH256 hash:
6a3d0e2e98b1cf28a0547aca0e88a20e251d94e0df7a5808769a2882e58dda11
MD5 hash:
da428eda04a2259a02bcf3120c34715c
SHA1 hash:
34c754c85eebd4c749bab5b24f1a8d3a5f5ebd8a
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/61f42aef-161f-4949-a1ec-2d3833108d77/
Parent samples :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 hash:
ee92f462a147eb2c66251c0398ab63f20018a800d1de76476a52ef8e52a7e4dd
MD5 hash:
81c624aaf23c85b2b2d74a309c236778
SHA1 hash:
4010d0d18de39cc9483b4c33cd603f59d906606c
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/61f42aef-161f-4949-a1ec-2d3833108d77/
SH256 hash:
2094497b3f255e8a87c2b757c2d70211bf9d57409352ccb7bfd396d41d332a93
MD5 hash:
cf4b62421ea5b6cc3c2e98c43cab27b3
SHA1 hash:
a35e74869129abb17e42a8670d71d6f75e6258dc
Link:
https://www.unpac.me/results/61f42aef-161f-4949-a1ec-2d3833108d77/
SH256 hash:
c9b6a40070a835c791dd7d54b44c5a2eeb767131c65ccf66eea49f127a826efa
MD5 hash:
f05a2882f393d533b6356e5cfe90f5c0
SHA1 hash:
e345ce826a84531424b359f86806659cdc8dd470
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/61f42aef-161f-4949-a1ec-2d3833108d77/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4eef5964d4be/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:NETexecutableMicrosoft
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 4eef5964d4be888f65a3410d0f60fd3559021aff06bf1448c919e294b7ecb72e

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/48862/

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