MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1bbc8a34b7590c1593c5a79a8d0f93b17a162f44893c37aa11e4cb9e0e2d96bf. 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


Intelligence 13 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1bbc8a34b7590c1593c5a79a8d0f93b17a162f44893c37aa11e4cb9e0e2d96bf
SHA3-384 hash: 9ec65c3b02b365aebd12dbc9a24dcfd3f9f243c686b884eeb28f532ff86f68eac07b69ba41d28bf2ee02fa27ee4f0782
SHA1 hash: 7fdd3b9b76f2c40df10def7ec3aa25c4fb192ec7
MD5 hash: 98d2d5ac3bd493d77f0a7300a43d045b
humanhash: video-snake-dakota-oxygen
File name:Unpaid invoice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:461'735 bytes
First seen:2021-10-14 13:32:12 UTC
Last seen:2021-10-15 07:51:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger)
ssdeep 12288:g4fXqKkoo4mdIaFOyzsfUvCqqTb+3e3DcGv2:9PbkoodWaEXU6P/2
Threatray 10'705 similar samples on MalwareBazaar
TLSH T19FA4BD17EC86645ED88A3B737C528FF146E48D4F5F1C714EA1AF37162AB60B2E13118A
File icon (PE):PE icon
dhash icon 0eda96aaaaaaa2f0 (1 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
240
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Unpaid invoice.exe
Verdict:
Malicious activity
Analysis date:
2021-10-14 20:48:49 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/95e3b5b8-25e1-40f3-9d64-2826f6aaca88

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Suspicious.Win32.Save.a.31772.4787.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Deleting a recently created file
Windows shutdown
Launching a process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
60%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/616831911c2d58ba7406710a/reports/3d839b3c-463e-407c-baf5-bb1bffe3f373/overview
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/65905dd3-9659-4780-a57c-8ed51b902e96
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/870509
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
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)
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 502939 Sample: Unpaid invoice.exe Startdate: 14/10/2021 Architecture: WINDOWS Score: 100 35 www.starsspell.com 2->35 37 starsspell.com 2->37 45 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 7 other signatures 2->51 11 Unpaid invoice.exe 17 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\Local\...\gyalquzbu.dll, PE32 11->33 dropped 65 Injects a PE file into a foreign processes 11->65 15 Unpaid invoice.exe 11->15         started        signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 15->67 69 Maps a DLL or memory area into another process 15->69 71 Sample uses process hollowing technique 15->71 73 Queues an APC in another process (thread injection) 15->73 18 explorer.exe 15->18 injected process9 dnsIp10 39 www.bjyxszd520.xyz 18->39 41 www.invetorsbank.com 185.53.177.12, 49839, 80 TEAMINTERNET-ASDE Germany 18->41 43 15 other IPs or domains 18->43 53 System process connects to network (likely due to code injection or exploit) 18->53 55 Performs DNS queries to domains with low reputation 18->55 22 WWAHost.exe 18->22         started        25 autoconv.exe 18->25         started        27 autochk.exe 18->27         started        signatures11 process12 signatures13 57 Self deletion via cmd delete 22->57 59 Modifies the context of a thread in another process (thread injection) 22->59 61 Maps a DLL or memory area into another process 22->61 63 Tries to detect virtualization through RDTSC time measurements 22->63 29 cmd.exe 1 22->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1bbc8a34b7590c1593c5a79a8d0f93b17a162f44893c37aa11e4cb9e0e2d96bf/
Threat name:
Win32.Trojan.Nsisx
Create hunting rule
Status:
Malicious
First seen:
2021-10-14 13:33:06 UTC
AV detection:
12 of 40 (30.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=do6iunfxlegble6fu6ni2d4twf5bml2ere6dpkqr4tfz4drns27q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
014d0ece0d472eaea73698d634308303ddb9f227f39d339a66416c3cb744d2c1
Formbook
2d0bddbcdb78a0fed7250784feb4238aa9ad086fb4c9ab8d7c877a6ff503d309
Formbook
3ac2da7ec8b0c46550c9b85707c4743ea4cacbb5bb6ee0fd159792f3978e3ad3
Formbook
40da3a76d7dfbe395b879dc9b090af73483617c65c7c433975490c0a22e4a71a
Formbook
612a346d3e2412113c53343b67419bc7a13bcf1bfe890137b68b3b5553a20096
Formbook
a16f2d423430943200368f83b9a96afc304d51d94e04559a456491632948799d
Formbook
ab4676fc90e455da2127126bfbd1fd167328c79eda83f686ef71dd89266825f5
Formbook
b4fc77c70794670f21a4c4fbc3b608589cef7b9d98acadf9b0a956404f6ca0be
Formbook
d4d741eed6175c2c27cad4ef53d1413c9722b37411e82f30334a611bcbe856b2
Formbook
+ 10'695 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:b2c0 loader persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/211014-qtj7lahfd2/
Behaviour
Modifies Internet Explorer settings
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
NSIS installer
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Adds policy Run key to start application
Executes dropped EXE
Xloader Payload
Formbook
Xloader
Malware Config
C2 Extraction:
http://www.thesewhitevvalls.com/b2c0/
Unpacked files
SH256 hash:
1bbc8a34b7590c1593c5a79a8d0f93b17a162f44893c37aa11e4cb9e0e2d96bf
MD5 hash:
98d2d5ac3bd493d77f0a7300a43d045b
SHA1 hash:
7fdd3b9b76f2c40df10def7ec3aa25c4fb192ec7
Link:
https://www.unpac.me/results/865fe703-11be-4a86-99f4-f955ca3717bb/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/1bbc8a34b759/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.47
Link:
https://yomi.yoroi.company/submissions/1bbc8a34b7590c1593c5a79a8d0f93b17a162f44893c37aa11e4cb9e0e2d96bf

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

Malspam

Formbook

Executable exe 1bbc8a34b7590c1593c5a79a8d0f93b17a162f44893c37aa11e4cb9e0e2d96bf

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment

Comments