MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 16f97f99f7852ce09bc9f40d163b328fbde51a5d5ba5974199c2f14722ba043c. 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: 15
| SHA256 hash: | 16f97f99f7852ce09bc9f40d163b328fbde51a5d5ba5974199c2f14722ba043c |
|---|---|
| SHA3-384 hash: | b0aae0550c8680a0f3d4e7c77431bb4f626a261540868cb02fae0e956408fd7c8af827779187d2586cf527c31957d5c2 |
| SHA1 hash: | 2f73fd951fbf08aad07d56d65494670462e1aca4 |
| MD5 hash: | 44aef545a6f6386182033b751c7307ef |
| humanhash: | quiet-eight-earth-fourteen |
| File name: | 16f97f99f7852ce09bc9f40d163b328fbde51a5d5ba5974199c2f14722ba043c.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 876'032 bytes |
| First seen: | 2026-10-14 16:00:01 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/vnd.microsoft.portable-executable |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (49'307 x AgentTesla, 20'722 x Formbook, 12'402 x SnakeKeylogger) |
| ssdeep | 24576:iUTBzNkWA5dUKB+KrrioiBAwPVSDffE20NB5:iPd2KdriJAwtSjfE |
| TLSH | T180151225213EDF13D8A64BF16492D13023F52DFD6861D601AFE56CEF7A22F011E12AA7 |
| 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 | f0e4e2d1c4b8ccf0 (7 x Formbook, 3 x DarkCloud, 1 x AgentTesla) |
| Reporter |  ShadowOpCode |
| Tags: | exe FormBook RGBLoader |
Intelligence
File Origin
# of uploads :
1
# of downloads :
83
Origin country :
ITVendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Malware family:
agenttesla
ID:
1
File name:
https://temp.sh/HVmiT/RGBLoader.zip
Verdict:
Malicious activity
Analysis date:
2026-10-14 15:16:47 UTC
Tags:
rat pulsar netreactor ip-check evasion stealer agenttesla ftp exfiltration uac xworm screenconnect rmm-tool smtp ultravnc telegram snake keylogger
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Verdict:
Malicious
Score:
96.5%
Tags:
virus cupi
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Sending a custom TCP request
Launching a service
Creating synchronization primitives
Launching a process
Creating a file
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
entropy krypt obfuscated packed vbnet
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-10-11T22:14:00Z UTC
Last seen:
2026-10-16T12:48:00Z UTC
Hits:
~100
Verdict:
Unknown
Score:
99%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.33 Win 32 Exe x86
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Status:
Malicious
First seen:
2026-10-12 04:44:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
28 of 36 (77.78%)
Threat level:
2/5
Detection(s):
Suspicious file
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
16f97f99f7852ce09bc9f40d163b328fbde51a5d5ba5974199c2f14722ba043c
MD5 hash:
44aef545a6f6386182033b751c7307ef
SHA1 hash:
2f73fd951fbf08aad07d56d65494670462e1aca4
SH256 hash:
eefd5ae2557b29ab542cf121efe144294eeedbd154680cfcb1c89610ac8f63d3
MD5 hash:
51ba4bb5eee3e75e8a174ae3e48bbe2e
SHA1 hash:
92a0f04859fa5bd6b4899c71808cb158926cf538
SH256 hash:
031f5387e15cb20e2b022482531e9b863da1c0825c3e057a5197cf1fc75ff5c3
MD5 hash:
e962af4749fabdcda10df6da328f28ad
SHA1 hash:
f335dbd80b7dd1798cde7b4a433167c454d4c7dc
SH256 hash:
e89e7f951441dc3f17d79871184445317f15127b549e7b8630597ff435aa7785
MD5 hash:
b00b93516137d93a4f93c0c0da361b80
SHA1 hash:
64b326906b8ce20035e28c3c1acc6bc2b8de80b8
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
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: | DotNet_RGB_Embedded_AssemblyLoader_Hunt |
|---|---|
| Author: | ShadowOpCode |
| Description: | Hunt .NET bitmap RGB extraction combined with embedded resources and assembly loading |
| Rule name: | HUNT_NET_Loader_ImagePixel_To_AssemblyLoad |
|---|---|
| Author: | Anish Bogati |
| Description: | Hunting: .NET loader that reads pixel data from an embedded image, loads it as a .NET assembly, and runs it via reflection or late binding. Catches bitmap-steganography loaders. |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | Runtime_Broker_Variant_1 |
|---|---|
| Author: | Sn0wFr0$t |
| Description: | Detecting malicious Runtime Broker |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | WIN_Malware_Derialock_ForgeAuto_3127f957_Extrait |
|---|---|
| Author: | Marjoriefort |
| Description: | Detects Derialock (pe, etat extrait) |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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