MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b599240a13547435a237fa14405a60999c3b3475c5e8f9a7507843a232787ef4. 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: 16


Intelligence 16 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b599240a13547435a237fa14405a60999c3b3475c5e8f9a7507843a232787ef4
SHA3-384 hash: 174c452fa0ba670fd6dc8a0313396f6fc5e9da157a485ba9ed85d79648c8f79af62e55019dc4b2721bb4997dc14b983c
SHA1 hash: 4bc56ca1cdadd4046c1aef63c86e0310fa5f6bea
MD5 hash: f719eb956070542b549e26973e6660f8
humanhash: alpha-neptune-muppet-arkansas
File name:b599240a13547435a237fa14405a60999c3b3475c5e8f9a7507843a232787ef4
Download: download sample
Signature Formbook
Create hunting rule
File size:644'608 bytes
First seen:2025-11-06 10:20:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'207 x SnakeKeylogger)
ssdeep 12288:qwMFtTgI3gxNVrvJH6uMFMo8Ebk7CvE6rPpdYT7e26Fq9MPO7xKqX5:ZMFtTg5xHvJH6xFv8TqrITaR89f1b
Threatray 2'110 similar samples on MalwareBazaar
TLSH T16CD41244171AD612D5A947BC5C71F638173D6EEEAC01D22A8FEABEEB703AF410C44297
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 adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
61
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b599240a13547435a237fa14405a60999c3b3475c5e8f9a7507843a232787ef4
Verdict:
No threats detected
Analysis date:
2025-11-06 11:17:35 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b0db5824-fc73-4287-8d7b-33834e6d6115

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/35681/
Detection(s):
SecuriteInfo.com.Trojan.Siggen31.62596.33911882.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=690c767dea0f3e915c237d58
Tags:
agenttesla virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Connection attempt
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b599240a13547435a237fa14405a60999c3b3475c5e8f9a7507843a232787ef4
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-13T13:19:00Z UTC
Last seen:
2025-10-29T22:52:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/b599240a13547435a237fa14405a60999c3b3475c5e8f9a7507843a232787ef4/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a0560e93-d90d-4bc6-a24b-d9bb0b7f8502
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b599240a13547435a237fa14405a60999c3b3475c5e8f9a7507843a232787ef4
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.41 Win 32 Exe x86
Link:
https://app.malva.re/file/f719eb956070542b549e26973e6660f8
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b599240a13547435a237fa14405a60999c3b3475c5e8f9a7507843a232787ef4/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2025-10-13 16:17:57 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wwmsicqtkr2dlirx7ikeawtatgodwndvyxuptj2qpbb2emtyp32a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
099aab7e93cc90414b63769dba429546e4f98953f1c8304f6b8109e6fa0a824e
Formbook
62641672222e838c59836451c910b29233433eb80581fc7f3672de2b6a33b365
Formbook
6500b4198a595f173e1009ec7f6fca35b2e62e175911726a1bf6fbb44b5897c2
Formbook
69ae2e849e4b148f879630ae9e3a4f991602cc6a658dd732dd775c31839d69ce
Formbook
c34753d6a802dcb3570354a7ecc7e930d957a28cca0d63e698ac0c0cbe67e6cc
Formbook
ebc963782a30a3e6cc360a6e4fda16d2acac2de13ee0d8db863082e699dabd5a
Formbook
error
Formbook
+ 2'100 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:punm discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/251106-mda27svmfq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/824c9198-8ed0-47ba-b3f5-c303b249a9f4
Unpacked files
SH256 hash:
b599240a13547435a237fa14405a60999c3b3475c5e8f9a7507843a232787ef4
MD5 hash:
f719eb956070542b549e26973e6660f8
SHA1 hash:
4bc56ca1cdadd4046c1aef63c86e0310fa5f6bea
Link:
https://www.unpac.me/results/04ea4e74-9a68-4a66-90ff-63f8a671335c/
SH256 hash:
f150f30c2a0fb5a70abdddd94c9879bcda1beffde93307b881703cadeabe0844
MD5 hash:
d5fa664f838e9ebeb0f547fda38948ab
SHA1 hash:
27dd8726a38852c9ae4385e4ae292c30fb4940b0
Link:
https://www.unpac.me/results/04ea4e74-9a68-4a66-90ff-63f8a671335c/
SH256 hash:
c8c37c42099e0b9f9665583cd5fa2c7e8eb3974df047b6fbea5ff582f1182e6f
MD5 hash:
c881d3b942b5ce669500016b6211a760
SHA1 hash:
3af204fb138e2b14f5ce31bab5bcee01fa9ea0e0
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/04ea4e74-9a68-4a66-90ff-63f8a671335c/
SH256 hash:
05787cf7c5d86465ae08da7d62855f0bf4d5463a1d3e32218244ffef221bfec6
MD5 hash:
44440f534ec9b819dd0acf15ab253bed
SHA1 hash:
f06e76647b320cb2a9b04ce36002996775536c5b
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/04ea4e74-9a68-4a66-90ff-63f8a671335c/
Parent samples :
62641672222e838c59836451c910b29233433eb80581fc7f3672de2b6a33b365
0738cee9bc712803e28299bc41223192abb932064478c278f10350e65f755d30
b599240a13547435a237fa14405a60999c3b3475c5e8f9a7507843a232787ef4
c38c0cf6caae09abb251a613fd891d105e2c37424817f5b005154f34920edc3c
551c912edbc41df60d31cb5a875590f5e8167d5b18b8829459e2e220b1abb75a
f3e615622500ad4051830519118058c6a7d31411605a93c85a042512bffe9b3c
423f72873f865b00ead93f7467e8995a0ec37334c33064233c7189f8e560332d
09119a05e2e2a4857d5eae0c7d8fc474869e6e6483c876a78ddbfe91661a0cc5
d87de6be63c49499dfe482bfdafbdca13760efb66c2d8af6950919f01f52608c
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b599240a1354/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/b599240a13547435a237fa14405a60999c3b3475c5e8f9a7507843a232787ef4

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.

Cape
Cape
https://www.capesandbox.com/analysis/35681/

Comments