MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 9b7fd781016675bd73b0acc7e402bbdcf4dfa3e3df4a5dd7d7c9c850bc2d85e8. 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: 10
| SHA256 hash: | 9b7fd781016675bd73b0acc7e402bbdcf4dfa3e3df4a5dd7d7c9c850bc2d85e8 |
|---|---|
| SHA3-384 hash: | cf1248b066546eefb0effbce309045644ff534c04c699dddcc45cc41e7f0930973a3a021248d4a306eea805052c84092 |
| SHA1 hash: | 6143e8b0916cfe93921dad38017535de273368dd |
| MD5 hash: | 43ec6bb42a334714da476698f62e51c2 |
| humanhash: | butter-cold-lactose-lion |
| File name: | invoice number 2100799.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 239'617 bytes |
| First seen: | 2021-05-28 11:33:07 UTC |
| Last seen: | 2021-06-01 12:34:09 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla) |
| ssdeep | 6144:jQqqE5qmpxQ7adxjTlhGgjU367+BN9O0+B:cEkC/xNAgjUwcHO0+B |
| Threatray | 5'544 similar samples on MalwareBazaar |
| TLSH | C43412523BC184EBD81123B0887B9E7EC6FF8702B62558E72F307F356751083A95A697 |
| Reporter |  GovCERT_CH |
| Tags: | FormBook |
Intelligence
File Origin
# of uploads :
8
# of downloads :
159
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ab.exe
Verdict:
Malicious activity
Analysis date:
2021-05-28 11:23:05 UTC
Tags:
installer trojan formbook stealer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a file
Unauthorized injection to a recently created process
Sending a UDP request
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
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.
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)
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Detection:
formbook
Threat name:
Win32.Trojan.FormBook
Status:
Malicious
First seen:
2021-05-28 09:57:00 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
17 of 29 (58.62%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 5'534 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook rat spyware stealer trojan
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.rvs2gospecials.com/fmjo/
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: | crime_win32_ransom_avaddon_1 |
|---|---|
| Author: | @VK_Intel |
| Description: | Detects Avaddon ransomware |
| Reference: | https://twitter.com/VK_Intel/status/1300944441390370819 |
| 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: | autogenerated rule brought to you by yara-signator |
| Rule name: | win_formbook_g0 |
|---|---|
| Author: | Slavo Greminger, SWITCH-CERT |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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