MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3645c06970210b79497c43087a250f575d11106851521861c8b068e434c280f7. 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: 17


Intelligence 17 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3645c06970210b79497c43087a250f575d11106851521861c8b068e434c280f7
SHA3-384 hash: 843f74d63f3be3003e037d0ffa12bd8fbb64c3180e05e5e5c5f274ad8c2c7ca15709691856b791f9fc58b1195d33c0e5
SHA1 hash: a21dac35fb5c0a6bfd97f281bfc2f5683df1ab4a
MD5 hash: 74f8cb4a01358352df2e059a298e1bf2
humanhash: wolfram-lima-foxtrot-lake
File name:Payment Advice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:870'912 bytes
First seen:2025-08-04 13:48:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:LtpHb5sh/9oBqY4t/TkRYEK+FJkYmgqO+/KI4:LtBb5snyk6R/k/2+/K
Threatray 4'122 similar samples on MalwareBazaar
TLSH T1CD0501103359DEB3F5A96F7196A1D23013A87D199CE6D3490ECEBDDB387278248F1A42
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 James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
50
Origin country :
US US
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Payment Advice.exe
Verdict:
Malicious activity
Analysis date:
2025-08-04 13:53:09 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/335b6a3f-4807-487a-a326-cd36ae8bdf5d

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/18798/
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.17182.31806.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6890ba300b4775fb21361fc1
Tags:
virus micro msil
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/6890ba2e32e61090868caf6f/reports/f780e58f-9d1e-4e18-98fe-4576526cdfbd/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/3645c06970210b79497c43087a250f575d11106851521861c8b068e434c280f7
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/b2c4e72c-ffc3-4e4f-a4bd-94e009709900
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3645c06970210b79497c43087a250f575d11106851521861c8b068e434c280f7
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable PDB Path PE (Portable Executable) SOS: 0.45 Win 32 Exe x86
Link:
https://app.malva.re/file/74f8cb4a01358352df2e059a298e1bf2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3645c06970210b79497c43087a250f575d11106851521861c8b068e434c280f7/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/3645c06970210b79497c43087a250f575d11106851521861c8b068e434c280f7
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-08-04 07:53:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 37 (51.35%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gzc4a2lqeefxssl4imehujipk5orcedikfjbqyoiwbuoingcqd3q._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
Similar samples:
229143d66574d5d01e18ec3078b0d3de25b91c21dfb79e9f75032a7d8d555f68
Formbook
bde181e1225b6cb39fadcaf7a03659dcb8ba059eee626219b994f739b90e028c
Formbook
ded67530b43d631ec743606859227570de9e18ce9d61a72b2641fdaff6dc78e6
Formbook
e646f69ab13559c8f45cf9ec17c23b359bfd93a61d4932da2d81aab6f25c9d79
Formbook
error
Formbook
+ 4'112 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/250804-q395da1wc1/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
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/5f98025b-2fe1-4df9-9e2f-cdafeb161d8c
Unpacked files
SH256 hash:
3645c06970210b79497c43087a250f575d11106851521861c8b068e434c280f7
MD5 hash:
74f8cb4a01358352df2e059a298e1bf2
SHA1 hash:
a21dac35fb5c0a6bfd97f281bfc2f5683df1ab4a
Link:
https://www.unpac.me/results/632a371c-94e5-45be-8393-c3233720938a/
SH256 hash:
7b457e79525fdb79fc6a01ecb8ec904ef7dd2b57ae5b9229fc3fed807ba24149
MD5 hash:
7bb566e4739a4252f2bf73076cd289d0
SHA1 hash:
00e87658b74e5b71eece71b5dc92c7ad518145fd
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/632a371c-94e5-45be-8393-c3233720938a/
Parent samples :
bde181e1225b6cb39fadcaf7a03659dcb8ba059eee626219b994f739b90e028c
e646f69ab13559c8f45cf9ec17c23b359bfd93a61d4932da2d81aab6f25c9d79
3645c06970210b79497c43087a250f575d11106851521861c8b068e434c280f7
ded67530b43d631ec743606859227570de9e18ce9d61a72b2641fdaff6dc78e6
229143d66574d5d01e18ec3078b0d3de25b91c21dfb79e9f75032a7d8d555f68
ef2a54c5688d0e055fffd22394c168c81f80ec4a8ab33ceb87e70a6eddf97942
SH256 hash:
b4b0a9ba6bd1116488d0eda1504e7eae6fe96b0f4a372e82d958f373ddfd6eba
MD5 hash:
5aa0803f8563332e53caef81eda5595a
SHA1 hash:
8f8b6591ecbec8a79f6bb478db04224a1bfad90f
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/632a371c-94e5-45be-8393-c3233720938a/
SH256 hash:
6602459e917db58b17b53efcaa362098586828fb2cc861bf4158a64857483209
MD5 hash:
9d830fab59624d6820d261b39c5316b8
SHA1 hash:
e14d1e0eb5c9223920fef1028ab7f7c67f0782c5
Link:
https://www.unpac.me/results/632a371c-94e5-45be-8393-c3233720938a/
SH256 hash:
022e63b6629d4c212d1aaf9cf59a514f7eaa263bcca7652a5dffc7df6d3cce8d
MD5 hash:
bc023d9273bd786c3412f53eaf26f13a
SHA1 hash:
ec615009f2ccac586bf0814a01ffacf0b4d57dc3
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/632a371c-94e5-45be-8393-c3233720938a/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3645c0697021/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.61
Link:
https://yomi.yoroi.company/submissions/3645c06970210b79497c43087a250f575d11106851521861c8b068e434c280f7

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:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
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
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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/18798/

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 (GUARD_CF)high

Comments