MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b5ab0aee5bfa1894d6ea040e8d06a938e9c12351b8e1daa42a9ef361bf7ed377. 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: | b5ab0aee5bfa1894d6ea040e8d06a938e9c12351b8e1daa42a9ef361bf7ed377 |
|---|---|
| SHA3-384 hash: | 498aa7f3fbd70a13cb9c0bcc67d5f8bc6446aed66ff6940555e1725008fe526735ca684bccc856ac046bd7f607dcafae |
| SHA1 hash: | 4842e59ba1b67da0fd2c3a99aefe46dd416fd65f |
| MD5 hash: | cb145b9e0e0c0b930879896c5d17978c |
| humanhash: | sweet-connecticut-louisiana-fifteen |
| File name: | b5ab0aee5bfa1894d6ea040e8d06a938e9c12351b8e1daa42a9ef361bf7ed377 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 759'296 bytes |
| First seen: | 2025-01-10 14:14:22 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 21371b611d91188d602926b15db6bd48 (61 x Formbook, 23 x AgentTesla, 20 x RemcosRAT) |
| ssdeep | 12288:/sHzOUNUSB/o5LsI1uwajJ5yvv1l27+nTmG88iLfxahn5SCOc4eSeZB152Ij:OiUmSB/o5d1ubcvr888fxah5SPbeSeb5 |
| Threatray | 5'453 similar samples on MalwareBazaar |
| TLSH | T1CFF4239355C0D89BE17633F4903E8EE85170B571AED63FFA4760F66E69303D1C802A9A |
| TrID | 39.1% (.EXE) UPX compressed Win32 Executable (27066/9/6) 38.3% (.EXE) Win32 EXE Yoda's Crypter (26569/9/4) 7.2% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.5% (.EXE) Win32 Executable (generic) (4504/4/1) 2.9% (.EXE) OS/2 Executable (generic) (2029/13) |
| Magika | pebin |
| File icon (PE): |  |
| dhash icon | aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla) |
| Reporter |  adrian__luca |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
300
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b5ab0aee5bfa1894d6ea040e8d06a938e9c12351b8e1daa42a9ef361bf7ed377
Verdict:
Malicious activity
Analysis date:
2025-01-09 14:00:16 UTC
Tags:
upx autoit
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
autorun emotet
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
autoit compiled-script control lolbin microsoft_visual_cc mpcmdrun packed packed packed packer_detected regsvr32 upx
Verdict:
Malicious
Labled as:
Trojan.Generic
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
AI detected suspicious sample
Binary is likely a compiled AutoIt script file
Drops VBS files to the startup folder
Found API chain indicative of sandbox detection
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Switches to a custom stack to bypass stack traces
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Trojan.AutoitInject
Status:
Malicious
First seen:
2024-12-18 07:15:14 UTC
File Type:
PE (Exe)
Extracted files:
51
AV detection:
28 of 38 (73.68%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
unknown_loader_036
Similar samples:
+ 5'443 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery upx
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
UPX packed file
Drops startup file
Executes dropped EXE
Loads dropped DLL
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
5449af44927db67de43661a1fd73830311bde2f3e879372e30e2ad16d56a993b
MD5 hash:
c2bc3ea83c02979fbd7fd582c4c4bcbc
SHA1 hash:
84e2633b261a27886b12be447ed45428c7d944bb
Detections:
AutoIT_Compiled
SH256 hash:
b6b3b484ad9749435345ece85ef2035097b01c8668fa9801470274e19029ce23
MD5 hash:
08a531cd45da262592a8ed8a9e522f59
SHA1 hash:
a595d6fc17299ddc6d9df29e7e10010f5d4c75db
Detections:
win_formbook_g0
SH256 hash:
2e2ab9a74a2edd4aa4b5f76f9c957b6302b8f8ff87eda85af2dc1a9cc4da1d91
MD5 hash:
089205c4fd467ee46efce5eaebfe5dcf
SHA1 hash:
4652d10400e05d52021f88a06e35a12b0574e7b2
SH256 hash:
b5ab0aee5bfa1894d6ea040e8d06a938e9c12351b8e1daa42a9ef361bf7ed377
MD5 hash:
cb145b9e0e0c0b930879896c5d17978c
SHA1 hash:
4842e59ba1b67da0fd2c3a99aefe46dd416fd65f
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
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: | AutoIT_Compiled |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious. |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | golang_david_CSC846 |
|---|---|
| Author: | David |
| Description: | CSC-846 Golang |
| Rule name: | pe_detect_tls_callbacks |
|---|
| Rule name: | pe_no_import_table |
|---|---|
| Description: | Detect pe file that no import table |
| Rule name: | RansomPyShield_Antiransomware |
|---|---|
| Author: | XiAnzheng |
| Description: | Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP) |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| Author: | XiAnzheng |
| Description: | Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP) |
| Rule name: | UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser |
|---|---|
| Author: | malware-lu |
| Rule name: | upx_largefile |
|---|---|
| Author: | k3nr9 |
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 |
| CHECK_NX | Missing Non-Executable Memory Protection | critical |
Reviews
| ID | Capabilities | Evidence |
|---|---|---|
| AUTH_API | Manipulates User Authorization | ADVAPI32.dll::GetAce |
| MULTIMEDIA_API | Can Play Multimedia | WINMM.dll::timeGetTime |
| WIN_BASE_API | Uses Win Base API | KERNEL32.DLL::LoadLibraryA |
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