MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 398cf99253297f4791590cd85876db5e36e6fda316f56c6230306ef0e8d007ee. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 398cf99253297f4791590cd85876db5e36e6fda316f56c6230306ef0e8d007ee
SHA3-384 hash: a4fe196fca47dd223cb9ff566c2138922bb7392d0f011441f438cd1e33ad3341a80189246529583060933280046a44b0
SHA1 hash: e8af337abd24dc48c11366cdcbbe9a187e100ce4
MD5 hash: 8a003348f92301a8a49ebf51976a86e7
humanhash: nineteen-quiet-india-freddie
File name:398cf99253297f4791590cd85876db5e36e6fda316f56c6230306ef0e8d007ee
Download: download sample
Signature Formbook
Create hunting rule
File size:1'024'512 bytes
First seen:2026-08-10 14:15:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'192 x AgentTesla, 20'341 x Formbook, 12'364 x SnakeKeylogger)
ssdeep 24576:LoQzULAoh7KSL0ibrQmW1UuhgVbi3oWCpR:0AYA8K60+W1RceCp
TLSH T1D3251288A785CA13C99813394E71F3BA21A96EFAB800D3478FCD9EFF7975D151E08152
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.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 :
63
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/63cf7a8c-5ab4-4434-b315-ec54519bc034/
Malware family:
n/a
ID:
1
File name:
Pagamento.rar
Verdict:
No threats detected
Analysis date:
2026-07-14 09:55:13 UTC
Tags:
arch-exec
Link:
https://app.any.run/tasks/ffce7f25-7a31-4064-a987-75e978ff1d2c

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/79793/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a 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:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6a79dd6fc28463a7097ad9ca/reports/21ef27f2-75f6-4a0d-a317-d041f7074310/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/398cf99253297f4791590cd85876db5e36e6fda316f56c6230306ef0e8d007ee
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-13T02:45:00Z UTC
Last seen:
2026-08-12T01:19:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/398cf99253297f4791590cd85876db5e36e6fda316f56c6230306ef0e8d007ee/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/6f965c95-ebf8-4d93-83ff-240bf1ce0151
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/398cf99253297f4791590cd85876db5e36e6fda316f56c6230306ef0e8d007ee
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/398cf99253297f4791590cd85876db5e36e6fda316f56c6230306ef0e8d007ee/
Threat name:
ByteCode-MSIL.Trojan.SnakeKeyLogger
Create hunting rule
Status:
Malicious
First seen:
2026-07-13 06:02:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hggptestff7upekzbtmfq5w3ly3on7ndc32wyyrqgbxpb2gqa7xa._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260810-rlzsrabj8s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
398cf99253297f4791590cd85876db5e36e6fda316f56c6230306ef0e8d007ee
MD5 hash:
8a003348f92301a8a49ebf51976a86e7
SHA1 hash:
e8af337abd24dc48c11366cdcbbe9a187e100ce4
Link:
https://www.unpac.me/results/cae3b9d5-d41e-4281-8f72-46e76c3979f0/
SH256 hash:
e9820bb37eca9628c1d1548e15002cc7d734d9c1162f68d8c2437f541a55ac3e
MD5 hash:
3e67017848b72e6ba05969154aa9841f
SHA1 hash:
01bf7910f4f70fb7abad4104d839e207692cd319
Link:
https://www.unpac.me/results/cae3b9d5-d41e-4281-8f72-46e76c3979f0/
SH256 hash:
a94defc7f727e2003f985ec36d5b79408241f28305bdea30429e52d63259e7ac
MD5 hash:
264a7c979cf74ea3b177a3dcf012e23b
SHA1 hash:
932be8641a47cedfe9d08c0154493e60038591f3
Link:
https://www.unpac.me/results/cae3b9d5-d41e-4281-8f72-46e76c3979f0/
SH256 hash:
b4fb635f5ff54e516ba5795298520ddb051eb7b7963b77a676fe7554ffb49105
MD5 hash:
05efe3f0e40fd4d406d851f476e514d8
SHA1 hash:
43231755c9e8d276ead8c83b3dfee5e65538e778
Link:
https://www.unpac.me/results/cae3b9d5-d41e-4281-8f72-46e76c3979f0/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/398cf9925329/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/398cf99253297f4791590cd85876db5e36e6fda316f56c6230306ef0e8d007ee

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.

Cape
Cape
https://www.capesandbox.com/analysis/79793/

Comments