MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1a55fa78a001127ab3e53317fc29487b57343034496594949610a78191156519. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
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SHA256 hash: 1a55fa78a001127ab3e53317fc29487b57343034496594949610a78191156519
SHA3-384 hash: 6543507c78db4db8b838254647b49488db38af0d03daf7dfd0e0ab2247efb1dc05f88a4b34c306b7eb43425f9b711400
SHA1 hash: 457a0cbf5058152f04bcf018534646bbce2b5646
MD5 hash: c2927f706f2fc5d37767de3f40c8671b
humanhash: alpha-mountain-football-hamper
File name:bnh.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:628'736 bytes
First seen:2021-08-12 05:50:39 UTC
Last seen:2021-08-12 07:03:49 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:xMz3Zg6g2zuXCzXDUO03kdwTYDHiwngDa2mYj:xM766g2qSzzRDLnD2m
Threatray 7'012 similar samples on MalwareBazaar
TLSH T107D4DF3717887BF3D2BC87796866201583F0C12AA57AEB9B3CF561D44C5DF880B22657
dhash icon c198989999e9b179 (16 x SnakeKeylogger, 13 x AgentTesla, 8 x Formbook)
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
285
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
bnh.exe
Verdict:
Suspicious activity
Analysis date:
2021-08-12 05:51:45 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/92e4c6bb-72b7-4e1b-88ca-959369f0924b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/178443/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.15377.12525.9549.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Connection attempt
Sending a custom TCP request
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system 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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/dcb65435-926c-4db6-802f-688144b6b5e6
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/831440
Signature
.NET source code contains very large array initializations
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 463866 Sample: bnh.exe Startdate: 12/08/2021 Architecture: WINDOWS Score: 100 36 www.latestgrants.com 2->36 38 www.kirkgun.com 2->38 40 kirkgun.com 2->40 58 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->58 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 6 other signatures 2->64 11 bnh.exe 15 5 2->11         started        signatures3 process4 dnsIp5 48 www.google.com 172.217.168.68, 443, 49711 GOOGLEUS United States 11->48 32 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 11->32 dropped 34 C:\Users\user\AppData\Local\...\bnh.exe.log, ASCII 11->34 dropped 74 Writes to foreign memory regions 11->74 76 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->76 78 Injects a PE file into a foreign processes 11->78 16 AddInProcess32.exe 11->16         started        19 conhost.exe 11->19         started        file6 signatures7 process8 signatures9 50 Modifies the context of a thread in another process (thread injection) 16->50 52 Maps a DLL or memory area into another process 16->52 54 Sample uses process hollowing technique 16->54 56 2 other signatures 16->56 21 explorer.exe 16->21 injected process10 dnsIp11 42 www.kureex.com 52.58.78.16, 49754, 80 AMAZON-02US United States 21->42 44 www.smartknocksacademy.com 21->44 46 8 other IPs or domains 21->46 66 System process connects to network (likely due to code injection or exploit) 21->66 25 wscript.exe 21->25         started        signatures12 process13 signatures14 68 Modifies the context of a thread in another process (thread injection) 25->68 70 Maps a DLL or memory area into another process 25->70 72 Tries to detect virtualization through RDTSC time measurements 25->72 28 cmd.exe 1 25->28         started        process15 process16 30 conhost.exe 28->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1a55fa78a001127ab3e53317fc29487b57343034496594949610a78191156519/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-11 10:48:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
40
AV detection:
16 of 28 (57.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=djk7u6faaejhvm7fgml7ykkipnltimbujfszjfewcctydeivmumq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2dd1a191789c0c1c524360cb9750eb20280de0afbc9f1830a75557dd47988808
Formbook
314c2feb9e8798e4676b9350faba5721af148fa1e04fcaac8e698bbb027aa7cd
Formbook
3cec9bd714745b020366af9537184c619794ef4dee36c99093f53b243c97dcc1
Formbook
5101663e1850401504dd1e56231725be9a3001ed01e99fa88d348b9511c52f4d
Formbook
69357684ec8f83d428d2030db5f3d586718207e86457465e7fd37b3b4b7c4db2
Formbook
8e36abaf554e37c743a7874d53dcc57751e88be673ac98c5abaa873984cb6e23
Formbook
dd4114ea355d3f70e7683fb8491e2499347b6133bd9ef6d094a0cb6ad8aa4609
Formbook
e1fee7ee20f6d3bd6e913baeae737c558014454223d552c125c3f963e7c1a843
Formbook
+ 7'002 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:n066 loader rat suricata
Link:
https://tria.ge/reports/210812-6qxny55hwx/
Behaviour
Modifies system certificate store
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
Suspicious use of SetThreadContext
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.untangled218.com/n066/
Unpacked files
SH256 hash:
1a55fa78a001127ab3e53317fc29487b57343034496594949610a78191156519
MD5 hash:
c2927f706f2fc5d37767de3f40c8671b
SHA1 hash:
457a0cbf5058152f04bcf018534646bbce2b5646
Link:
https://www.unpac.me/results/9d580b2c-169e-4942-9e14-c626478f190d/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/1a55fa78a001/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/1a55fa78a001127ab3e53317fc29487b57343034496594949610a78191156519

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
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
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

7z ff233af2187a5aee8d3911360eef243367c505348b896473cadb76e077d44646

Formbook

Executable exe 1a55fa78a001127ab3e53317fc29487b57343034496594949610a78191156519

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 ff233af2187a5aee8d3911360eef243367c505348b896473cadb76e077d44646
Cape
Cape
https://www.capesandbox.com/analysis/178443/

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