MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3. 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: 18


Intelligence 18 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3
SHA3-384 hash: d7587f0c883943fb3db333f13b5c0a842e38b22a098e23ed83f18deae75a63a6f7a7690cf8b8ead165f9d83983ceeed2
SHA1 hash: c57a4c3d809a0d8588beb08e690a7b2e5c7272ac
MD5 hash: bbbedca6504fd3d7531019395216ba91
humanhash: mike-fruit-yellow-blue
File name:c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3
Download: download sample
Signature Formbook
Create hunting rule
File size:928'256 bytes
First seen:2026-06-08 10:04:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'067 x AgentTesla, 20'020 x Formbook, 12'352 x SnakeKeylogger)
ssdeep 24576:AahwZtqY0l7pMdRfrS2b4yN8WG2wq9r2:AmwaYU7pMdM2snWG
Threatray 2'961 similar samples on MalwareBazaar
TLSH T15B151218775EC81BC0529E354C76D2F827B46E48ED21C2179FEA3FAFB83B2551A52342
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
dhash icon e89c8692929282c2 (7 x Formbook, 2 x SnakeKeylogger, 1 x AgentTesla)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
140
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/24b459ab-7b76-4984-9f83-690d516565b2/
Malware family:
n/a
ID:
1
File name:
c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3.exe
Verdict:
No threats detected
Analysis date:
2026-06-08 10:33:53 UTC
Tags:
netreactor
Link:
https://app.any.run/tasks/3359a5c1-d119-42ed-ac9d-e2516060fa75

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/70046/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3561.15824.25958.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a2694cd3e9eff6a6b68c493
Tags:
infosteal micro virus shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a service
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed remcos vbnet
Link:
https://www.filescan.io/uploads/6a269491bf16337e43bb4eb4/reports/b0c5ddfe-a4f0-4c1e-959f-dcf5152e2c15/overview
Verdict:
Malicious
Labled as:
MSIL/Kryptik_AGeneric.EQF trojan
Link:
https://www.hybrid-analysis.com/sample/c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-05-21T00:05:00Z UTC
Last seen:
2026-06-10T08:44:00Z UTC
Hits:
~1000
Detections:
Trojan.Win32.SpeedBit.sb Trojan-Dropper.Win32.Injector.sb PDM:Trojan.Win32.Generic Backdoor.Agent.HTTP.C&C HEUR:Trojan-Spy.MSIL.Noon.gen Trojan-Spy.Noon.HTTP.ServerRequest Backdoor.Win32.Blakken.sb Trojan.Win32.Agent.sb Trojan.MSIL.Inject.sb Trojan.MSIL.Crypt.sb Trojan-Spy.Win32.Noon.sb
Link:
https://opentip.kaspersky.com/c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f29a6789-2890-4935-9d24-b8b5cc4d8633
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3
Gathering data
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3
Threat name:
ByteCode-MSIL.Trojan.MassLogger
Create hunting rule
Status:
Malicious
First seen:
2026-05-21 07:39:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yqhyfflqrtjhqjjk3w6f6qv4t3q4eippvda3xqvt47n3r6hkr2zq._file
Verdict:
malicious
Label(s):
zgrat
Create hunting rule
formbook
Create hunting rule
Similar samples:
06b4ddac05fc7398b45ed27aa2964f548d57513d7143cad79f9b34c95489f55c
Formbook
0cfbc10a408c5747c977cbac7e92bee4aaac42f6fb8d3d73b6e3b0de05208ba0
Formbook
35460d0ed6ddee3f707f73eaacf6e49f09f789bdbf460c21f491ba2ff2bb78ef
Formbook
3d73ce6df0894382b15b762b63c16b983ded101731112bbbb1a78bdf6faf6226
Formbook
4e635e08da9caa7a6c08b4d401acbd9141bbde92d9f5cb5aafa03d6706cb228b
Formbook
94f3a5b7cc5784d0be1f7d4c726ea45c5c84a132f7b86a10dee5d63332c5415a
Formbook
9d854ef77324e13432f5a59bdc1551e6425c8a5c533ee15a7e497e886636d30a
Formbook
c34753d6a802dcb3570354a7ecc7e930d957a28cca0d63e698ac0c0cbe67e6cc
Formbook
d140b5d801595363fb07538aa06d456e59572ce0c250ec6a0c8d2e3c2fabc56a
Formbook
error
Formbook
f91a8ea10c20406a4d4ca6744ddce69f4dc93d49bcee2db6d8d20de0f78e764c
Formbook
+ 2'951 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:be04 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260608-l54yxscx7z/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3
MD5 hash:
bbbedca6504fd3d7531019395216ba91
SHA1 hash:
c57a4c3d809a0d8588beb08e690a7b2e5c7272ac
Link:
https://www.unpac.me/results/13427c13-096f-49fa-96b1-6b087a1f4d95/
SH256 hash:
30b8da6a6c14adb7188e67f556e4e4abdc4e0a47db4008b7a2930c21dbdf59c2
MD5 hash:
c25420b73d0fe1dd63cf91b94c810225
SHA1 hash:
8d54643580d5d5952e74ec53ebf93b91e398e9de
Link:
https://www.unpac.me/results/13427c13-096f-49fa-96b1-6b087a1f4d95/
SH256 hash:
7e9022a459166b336984423ed8ff381f5d575d996162c4314b7745ce47cbae06
MD5 hash:
a1794a59f111bdf123d670cf20a83e2f
SHA1 hash:
f280bfac2fc77f0819275f8a80b6739fcd65645c
Link:
https://www.unpac.me/results/13427c13-096f-49fa-96b1-6b087a1f4d95/
SH256 hash:
1d2546f54c2e0236f49eb733160c4fc49828d612416c7e09379aa23f5df01e4e
MD5 hash:
02dcd52eaed5e2133ebffc427d7befcc
SHA1 hash:
96911e8c81efaa5875390ac27b136c09b570fe3b
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/13427c13-096f-49fa-96b1-6b087a1f4d95/
Parent samples :
0cfbc10a408c5747c977cbac7e92bee4aaac42f6fb8d3d73b6e3b0de05208ba0
0ff8a207bf56f8ad568fe2ccf540cab84a202c04aa1dbe691b6202c98b39f806
b09ba69fa3bf6102addb87e1c01b51a310509a96a66775bb1cacd94ec3c6875e
7fd7bd2b8be87e7a7d1f1a35b8e2f115a9393b11684ee7e94b5d66b938906afc
35460d0ed6ddee3f707f73eaacf6e49f09f789bdbf460c21f491ba2ff2bb78ef
63dc260a747b9043efb746b691bfc5a9237d1b152321a901bfe156b33e723c9c
c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c40f8295708cd278252addbc5f42bc9ee1c221efa8c1bbc2b3e7dbb8f8ea8eb3

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/70046/

Comments