MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 3ff28d4f5a5b236c660c2714bf1b5a515cf72cd738afea35b916938024644538. 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: 13
| SHA256 hash: | 3ff28d4f5a5b236c660c2714bf1b5a515cf72cd738afea35b916938024644538 |
|---|---|
| SHA3-384 hash: | 338f13a0bba90a56e964d23a9767093c868095a041fbc746609189f2f9de1a9d52aa43ab2ce39432c9a56bf2dabd40fd |
| SHA1 hash: | 46359519870b04d9a4fd61d3bd702527b2eecaba |
| MD5 hash: | b3081ab33cce3fc7f4ccb55bab054a40 |
| humanhash: | failed-winner-blue-maine |
| File name: | b3081ab33cce3fc7f4ccb55bab054a40 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 300'156 bytes |
| First seen: | 2021-11-29 17:05:33 UTC |
| Last seen: | 2021-11-29 18:30:40 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla) |
| ssdeep | 6144:rGi+fHoj0X+e9HYtyx8D9Nou8QDHlRxSmPFPEd0YywCv:Pj0XH9HFx8D6Q7Dxs6Yyw8 |
| Threatray | 11'944 similar samples on MalwareBazaar |
| TLSH | T1D754234AE1C48A3BC5B124705BA2EFF4B736E1E04241D64F8BF4AFBBAD31AD14429355 |
| 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 :
114
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SI1199.xlsx
Verdict:
Malicious activity
Analysis date:
2021-11-17 11:41:27 UTC
Tags:
exploit CVE-2017-11882 loader trojan formbook stealer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Unauthorized injection to a recently created process
DNS request
Result
Malware family:
n/a
Score:
0/10
Tags:
n/a
Verdict:
Suspicious
Threat level:
5/10
Confidence:
80%
Tags:
formbook overlay packed
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:
Generic Malware
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.NSISInject
Status:
Malicious
First seen:
2021-11-18 22:52:03 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
24 of 45 (53.33%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 11'934 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:nk6l rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.rthearts.com/nk6l/
Unpacked files
SH256 hash:
3ff28d4f5a5b236c660c2714bf1b5a515cf72cd738afea35b916938024644538
MD5 hash:
b3081ab33cce3fc7f4ccb55bab054a40
SHA1 hash:
46359519870b04d9a4fd61d3bd702527b2eecaba
Malware family:
FormBook
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.47
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: | Formbook |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Formbook in memory |
| Reference: | internal research |
| Rule name: | INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture |
|---|---|
| Author: | ditekSHen |
| Description: | Detect executables with stomped PE compilation timestamp that is greater than local current time |
| Rule name: | win_formbook_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.formbook. |
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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