MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 642f3e679fb526ac4f2d3eb833fba312c4aefe6ad34df78edda56bc0003ac7e1. 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: 16
| SHA256 hash: | 642f3e679fb526ac4f2d3eb833fba312c4aefe6ad34df78edda56bc0003ac7e1 |
|---|---|
| SHA3-384 hash: | 18f0551ca0c6ffedbed1d11806d9930c9a031e7841dcd007ef6fc117451473ab954092b36647cb7b2ea064244b3811c9 |
| SHA1 hash: | 98ee382b290efa7bfcd7381eccfa02a0255e2ebe |
| MD5 hash: | 7b57624bab141971e042fc007ae76552 |
| humanhash: | potato-nitrogen-bluebird-south |
| File name: | 642f3e679fb526ac4f2d3eb833fba312c4aefe6ad34df78edda56bc0003ac7e1 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 775'680 bytes |
| First seen: | 2025-04-08 08:27:06 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger) |
| ssdeep | 12288:ddMGYyOn6nzxFJA2mx7q9ED4+NRMexHn2792ZImixIzjPK7/Io4hr5wXd:9Y9n6n/JANxb4yRMexH2Yp/Sh4hc |
| Threatray | 1'890 similar samples on MalwareBazaar |
| TLSH | T17BF4015C930DC217C6A10BB01AB1F63513BC2EDAF805E31A9FDDADEFB966B405C40696 |
| 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 :
325
Origin country :
HUVendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
642f3e679fb526ac4f2d3eb833fba312c4aefe6ad34df78edda56bc0003ac7e1
Verdict:
Malicious activity
Analysis date:
2025-04-08 12:39:06 UTC
Tags:
formbook xloader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
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:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected powershell
Verdict:
Malicious
Labled as:
Trojan.Generic
Malware family:
Agent Tesla
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Status:
Malicious
First seen:
2025-03-25 12:59:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
20 of 24 (83.33%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
unc_loader_037
Similar samples:
+ 1'880 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
5/10
Tags:
discovery
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
642f3e679fb526ac4f2d3eb833fba312c4aefe6ad34df78edda56bc0003ac7e1
MD5 hash:
7b57624bab141971e042fc007ae76552
SHA1 hash:
98ee382b290efa7bfcd7381eccfa02a0255e2ebe
SH256 hash:
3abf5c5eb55ed1fd0d0adf34de33a7b727148981d475632547ebd7ffb6573c78
MD5 hash:
8bce5b90a282a20ceff09d5521d1d051
SHA1 hash:
23c8c6342908c1b6d0d33fff34d106f85b27bef2
SH256 hash:
05f9ce752a29c05fc70056515513815fb518bd01246a735c7cc1bc0f40c9b089
MD5 hash:
960cd878150977a125941f6caa794ca0
SHA1 hash:
85508296a194593bea688321e9c203a7a561088e
SH256 hash:
aaa5b1d9621beace540c518e7f0735c0aa53e96f6b762fef035d9d0356c54797
MD5 hash:
6ceb4020477848a4951a432f64e3dd63
SHA1 hash:
a178ccf10d6a1b73b551186ec71e9008392e703b
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
4ddcb8901f95c52a2f8806da5c82f89e2d3ee184a2741c6e5fa09084287bf8cb
MD5 hash:
cffd7ae4e826d08c197cad5a369bdc0f
SHA1 hash:
a7808a1fe4db25a786ea9305c3bdfa9c5f4e30eb
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.61
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: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| 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.
No further information available
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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