MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 616838e6dfff493e546f51436ee3c0bbe99d459c18abbbb71a6207555e9d73e6. 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: | 616838e6dfff493e546f51436ee3c0bbe99d459c18abbbb71a6207555e9d73e6 |
|---|---|
| SHA3-384 hash: | 1eac87bdf2418255ea5303252f369d7d217e787cbc4e1bc1eea8a84c571757aabde22332f6c5b7a00acd8e30657711f6 |
| SHA1 hash: | fee22df6132712432cb79519ebbc58d23a5ef8d3 |
| MD5 hash: | 902f81e7cc00c963acc14ab5d965358a |
| humanhash: | magnesium-three-batman-london |
| File name: | fgr30031.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 289'634 bytes |
| First seen: | 2021-10-28 12:57:22 UTC |
| Last seen: | 2021-10-28 14:28:51 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger) |
| ssdeep | 6144:wBlL/cf5D6b+2XHjDQ8OgQG9bCxyFpZjvYsmmtsWh:CeBD6iEQ7g9PvGU |
| Threatray | 10'911 similar samples on MalwareBazaar |
| TLSH | T18754122B61E408FBED2303B269677F7AC2768A0C14A14783A7F02D7779631D6C95E253 |
| File icon (PE): |  |
| dhash icon | b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla) |
| Reporter |  lowmal3 |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
3
# of downloads :
145
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a file
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
C2 URLs / IPs found in malware configuration
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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.FormBook
Status:
Malicious
First seen:
2021-10-28 12:58:08 UTC
AV detection:
18 of 27 (66.67%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 10'901 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:rv9n rat spyware stealer suricata 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
Deletes itself
Loads dropped DLL
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.cjspizza.net/rv9n/
Unpacked files
SH256 hash:
616838e6dfff493e546f51436ee3c0bbe99d459c18abbbb71a6207555e9d73e6
MD5 hash:
902f81e7cc00c963acc14ab5d965358a
SHA1 hash:
fee22df6132712432cb79519ebbc58d23a5ef8d3
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.
Malspam
Delivery method
Distributed via e-mail attachment
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