MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 9fbb9df559f0095c077340fa32948aed301427ad6b11f0f682736ca6695d4077. 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
| SHA256 hash: | 9fbb9df559f0095c077340fa32948aed301427ad6b11f0f682736ca6695d4077 |
|---|---|
| SHA3-384 hash: | a0fed38090d03f34174592df7698168dcab287f30e4a9751abc1b0e3ed6d721ff56844007032318ff37c5cd2bd202004 |
| SHA1 hash: | 972a87d9c89f4b897bd31a1bafbe4b7b1dbbdfcd |
| MD5 hash: | 0ed290496fd80019928319c8b782248d |
| humanhash: | pizza-avocado-spring-east |
| File name: | 9fbb9df559f0095c077340fa32948aed301427ad6b11f0f682736ca6695d4077 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 837'128 bytes |
| First seen: | 2025-06-10 08:51:39 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'202 x SnakeKeylogger) |
| ssdeep | 12288:LHEIZc9rkqe5/miSLYxSAKbusGzTatFmJYM4w+k8BBJLdKodVFmw+AkR:LHEIMkqm3mA6JoT68vhsJLdrdVFmnn |
| Threatray | 4'588 similar samples on MalwareBazaar |
| TLSH | T18F05E000A6D89F06C47B2BF465A1D27427B4AE8AF932C39B4ED4BCEB7C71B114906357 |
| 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 :
288
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
9fbb9df559f0095c077340fa32948aed301427ad6b11f0f682736ca6695d4077
Verdict:
Malicious activity
Analysis date:
2025-06-10 11:11:21 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Verdict:
Malicious
Score:
99.1%
Tags:
spawn shell msil
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
Searching for synchronization primitives
Creating a window
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
Trojan.Generic
Malware family:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook, PureLog Stealer
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Rundll32 Execution Without CommandLine Parameters
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Uses threadpools to delay analysis
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Backdoor.FormBook
Status:
Malicious
First seen:
2025-05-22 12:53:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
29 of 36 (80.56%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
unc_loader_037
formbook
Similar samples:
+ 4'578 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:hi07 discovery execution rat spyware stealer trojan
Behaviour
Scheduled Task/Job: Scheduled Task
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
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
9fbb9df559f0095c077340fa32948aed301427ad6b11f0f682736ca6695d4077
MD5 hash:
0ed290496fd80019928319c8b782248d
SHA1 hash:
972a87d9c89f4b897bd31a1bafbe4b7b1dbbdfcd
SH256 hash:
bf5b27bd17beb68ab8d178b4c52b8e9fd236b05c5652f4e876f6cc3a40ade4d5
MD5 hash:
0e26f688322d6e948a912101be685e83
SHA1 hash:
3403cc9b8b356b96266314f2ca141261a78ed20d
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
62c46e61d15a4ddf4ed4e998dba7ea1fa2fffca3e2a8ae11744eed1befbe3510
MD5 hash:
f74d5dc3b372fd76676f7c5f6b44428b
SHA1 hash:
99a11d4a3054443ad83b9fffd2d5de949204ae36
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
91261cb28721ff9970e64aebd6d5d5e42195e5e8e0ff33c5f0f6596a5cd16a3d
MD5 hash:
ced3def4ad5c2872a3957a8deb78f6aa
SHA1 hash:
42b66ac0024a090f4b6e9c56b44781f2cf0b6527
Detections:
win_formbook_w0
win_formbook_g0
win_formbook_auto
FormBook
Windows_Trojan_Formbook
Formbook
Malware family:
zgRAT
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
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: | AgentTesla_DIFF_Common_Strings_01 |
|---|---|
| Author: | schmidtsz |
| Description: | Identify partial Agent Tesla strings |
| Rule name: | INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438 |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables signed with stolen, revoked or invalid certificates |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| 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.
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
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (HIGH_ENTROPY_VA) | high |
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