MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 5ab3abbaaa772885b083fd8bd8d5855e8c6578c4a7cbaeef2cf68c1a3f4c1e11. 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: | 5ab3abbaaa772885b083fd8bd8d5855e8c6578c4a7cbaeef2cf68c1a3f4c1e11 |
|---|---|
| SHA3-384 hash: | e0029a69ca1c697863cc303ae6639e06c308f34a0d33343ea4938e5284dcd9d1ba56d852b3134cd186dcc2029b75cd1c |
| SHA1 hash: | b46a7698dcf7eb6fdb0d78d7ae523ec8ad194ba8 |
| MD5 hash: | 4564f07d878c1b136b75f4dd27a9e591 |
| humanhash: | mexico-moon-leopard-december |
| File name: | 2500010PO.excel.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 535'797 bytes |
| First seen: | 2021-10-25 08:05:30 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger) |
| ssdeep | 12288:lkfXCn04p/H604A/xhjuro/onuSaKdOzpk:OfSDp/H60P7ze1aKdOdk |
| Threatray | 10'929 similar samples on MalwareBazaar |
| TLSH | T13AB4BED299D844D0D4221EB12CBEFC11A2375DA968781D0E6D33B9616EB33E2347F94E |
| File icon (PE): |  |
| dhash icon | d80f0b0b0b0b0fb8 (1 x Formbook) |
| Reporter |  GovCERT_CH |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
207
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
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:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found malware configuration
Injects a PE file into a foreign processes
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)
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: CMSTP Execution Process Creation
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:
Threat name:
Win32.Trojan.Spynoon
Status:
Malicious
First seen:
2021-10-25 07:35:35 UTC
AV detection:
23 of 28 (82.14%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 10'919 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:ct6s 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 WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.metalzj.quest/ct6s/
Unpacked files
SH256 hash:
5ab3abbaaa772885b083fd8bd8d5855e8c6578c4a7cbaeef2cf68c1a3f4c1e11
MD5 hash:
4564f07d878c1b136b75f4dd27a9e591
SHA1 hash:
b46a7698dcf7eb6fdb0d78d7ae523ec8ad194ba8
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.
Malspam
Delivery method
Distributed via e-mail attachment
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