MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 f3b8435e7359411cefb4d6c762550f4881195a2ec0cb035da5737c4b4891fb6f. 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: 19
| SHA256 hash: | f3b8435e7359411cefb4d6c762550f4881195a2ec0cb035da5737c4b4891fb6f |
|---|---|
| SHA3-384 hash: | 1ef6e122ac272fc36e19f4da4f9f5743117b1577412be17b476bb9cc518614b4ea54b74915b29f96900239d3bc3bb17d |
| SHA1 hash: | 116ae7e038b75fcee7ac7ddc33f96f981c0e81a7 |
| MD5 hash: | 542ef4a811e2fa45e96efe1602acd737 |
| humanhash: | carolina-edward-river-paris |
| File name: | 542ef4a811e2fa45e96efe1602acd737 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 308'685 bytes |
| First seen: | 2023-03-28 07:01:22 UTC |
| Last seen: | 2023-03-28 09:34:33 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader) |
| ssdeep | 6144:TYa6RWpn++a1jQdqOgTSZ6i7vJYnmb7qEPDRtmfGe8C9jxIihLY2XJg:TYDWp++UEEOgmZ6uJwmb7q0DRtmfoC9s |
| Threatray | 2'620 similar samples on MalwareBazaar |
| TLSH | T17C64230536B0C41FE86717708E7B2B6E13E5EA0B15AEC70F93009F5AF2255D2B9193A7 |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4505/5/1) |
| File icon (PE): |  |
| dhash icon | b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla) |
| Reporter |  zbetcheckin |
| Tags: | 32 exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
241
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
542ef4a811e2fa45e96efe1602acd737
Verdict:
Malicious activity
Analysis date:
2023-03-28 07:02:40 UTC
Tags:
formbook xloader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Malware family:
n/a
Score:
5/10
Tags:
n/a
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
comodo formbook nemesis overlay packed remcos shell32.dll
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
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.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Machine Learning detection for sample
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Detection:
formbook
Threat name:
Win32.Trojan.Generic
Status:
Suspicious
First seen:
2023-03-28 07:02:07 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
15 of 23 (65.22%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 2'610 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:sa79 rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
b4e9910df99116b3c77c9c80a7699d38cad5eb2ba2eb16d0662dc5c4fd689dec
MD5 hash:
f72d5d8da975b6be4838a3f978d199ef
SHA1 hash:
de30458f20fe66ce4a10b35457e78d71651a284e
Detections:
FormBook
win_formbook_w0
win_formbook_auto
win_formbook_g0
SH256 hash:
40c5f58f008ac0a8afda1b37bc1c6fa4a8f7e748d957bc54a9195d06bcaf8611
MD5 hash:
5ae8e4fca84468df1846f5a3a2fbf24f
SHA1 hash:
1a4ef0d31bd8586986b8c99e69755a55bb9d20b5
SH256 hash:
f3b8435e7359411cefb4d6c762550f4881195a2ec0cb035da5737c4b4891fb6f
MD5 hash:
542ef4a811e2fa45e96efe1602acd737
SHA1 hash:
116ae7e038b75fcee7ac7ddc33f96f981c0e81a7
Malware family:
FormBook
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: | crime_win32_ransom_avaddon_1 |
|---|---|
| Author: | @VK_Intel |
| Description: | Detects Avaddon ransomware |
| Reference: | https://twitter.com/VK_Intel/status/1300944441390370819 |
| Rule name: | meth_get_eip |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| Rule name: | Windows_Trojan_Formbook |
|---|---|
| Author: | @malgamy12 |
| Rule name: | Windows_Trojan_Formbook_1112e116 |
|---|---|
| Author: | Elastic Security |
| Rule name: | win_formbook_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.formbook. |
| Rule name: | win_formbook_w0 |
|---|---|
| Author: | @malgamy12 |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
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