MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 76ce63841f53dd035159b8feed432cf72e114ffd57344d8fae525f0a350856f4. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments

SHA256 hash: 76ce63841f53dd035159b8feed432cf72e114ffd57344d8fae525f0a350856f4
SHA3-384 hash: da156ea10e8f0d3a4fc2e5a9cfa881b30a23c6e9a067cacdaf52e3fe8af9a58a93d7d975f8ceaaa77a8aad42355f9167
SHA1 hash: 06452f66b0fd5093513c29fe28c04a826721067b
MD5 hash: a4cef4466323bbc3f0e665f339629db5
humanhash: sodium-eight-connecticut-early
File name:Remittance_Advice.exe
Download: download sample
Signature Formbook
File size:776'704 bytes
First seen:2021-10-19 21:18:03 UTC
Last seen:2021-10-20 05:09:47 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'451 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:o3Kyph08OGQuZLvqJFTPpHVifhCmJKHusm8UqtG+6/lAssilcd0QNf3uGNBTqAF3:+4nGQYTq1ahCRHcJ+6/OsV60u
Threatray 10'890 similar samples on MalwareBazaar
TLSH T174F4C07A7202BEDFCD27CDB599442C505EA0B8770B1FC203A95B4D6A7ADE4A6CF104B1
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
3
# of downloads :
277
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Launching a process
Launching cmd.exe command interpreter
Launching the default Windows debugger (dwwin.exe)
Possible injection to a system process
Creating a window
Unauthorized injection to a system process
Deleting of the original file
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Result
Verdict:
UNKNOWN
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
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)
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
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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 506193 Sample: Remittance_Advice.exe Startdate: 20/10/2021 Architecture: WINDOWS Score: 100 31 www.leileilei1999.xyz 2->31 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 8 other signatures 2->45 11 Remittance_Advice.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\Remittance_Advice.exe.log, ASCII 11->29 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 59 Injects a PE file into a foreign processes 11->59 15 Remittance_Advice.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 33 shops.myshopify.com 23.227.38.74, 49837, 80 CLOUDFLARENETUS Canada 18->33 35 www.ozba.xyz 104.216.97.77, 49835, 80 AS40676US United States 18->35 37 2 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 49 Performs DNS queries to domains with low reputation 18->49 22 msiexec.exe 18->22         started        signatures11 process12 signatures13 51 Self deletion via cmd delete 22->51 53 Modifies the context of a thread in another process (thread injection) 22->53 55 Maps a DLL or memory area into another process 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Threat name:
Win32.Trojan.FormBook
Status:
Malicious
First seen:
2021-10-19 13:19:52 UTC
AV detection:
16 of 25 (64.00%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:snr6 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
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.reynbetgirisi.com/snr6/
Unpacked files
SH256 hash:
a24b017645ad75f78552719251c33471c0a92f3cc19578db10b0ede79fb85556
MD5 hash:
ed4b0496fe05020acdf441fbaa04c7ae
SHA1 hash:
84ab04cd144a22b7f8e9e8d1a1c32d412857dc94
Detections:
win_formbook_g0 win_formbook_auto
SH256 hash:
89ad6995c2b593869deda1d3a916319e6f57bd03fa1e51b483f4d74a45191b63
MD5 hash:
19acd424e93fdb4db5c01101cf6cd400
SHA1 hash:
c514f63594b2efd3801d4ef375bfffffaa0e225c
SH256 hash:
43e38f251dbca9aa20f3470167e5427a7e7a7cdcd25f0b6b045ae8577cd3e345
MD5 hash:
f62ab5d3528d5a3b9e270ea1f9347868
SHA1 hash:
6a74e87711c615adbd9145f829a33f55b7e42dd6
SH256 hash:
76ce63841f53dd035159b8feed432cf72e114ffd57344d8fae525f0a350856f4
MD5 hash:
a4cef4466323bbc3f0e665f339629db5
SHA1 hash:
06452f66b0fd5093513c29fe28c04a826721067b
Please note that we are no longer able to provide a coverage score for Virus Total.

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:pe_imphash
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe 76ce63841f53dd035159b8feed432cf72e114ffd57344d8fae525f0a350856f4

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment

Comments