MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d5a3b850dc0e753c98a4ff8d4fdf8c8cdd58b0e134e741db5a34b47e7accf0cc. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d5a3b850dc0e753c98a4ff8d4fdf8c8cdd58b0e134e741db5a34b47e7accf0cc
SHA3-384 hash: 4baa1a2c41d1ac3a022a5e8e1616029128d732b2c98a016cba388cc44915089110ab5d7af7428563b03a13ad933e1a30
SHA1 hash: 7fe70bb27f8d899b9acf3765fdb92782f9c0a9da
MD5 hash: 61498fdfcfdec5aa4d99e775e58142e3
humanhash: angel-thirteen-nitrogen-cup
File name:Document.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:705'024 bytes
First seen:2021-09-29 13:04:28 UTC
Last seen:2021-09-29 14:14:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:0D4VHfQe6ZyWshg+qbZxTZZWunAWv2rtcQqw1zmrVKAr/ctQoG4LCeoGgWABJkHY:0D4VHfQe6ZyWshg+qbZxTZZWunAWv2a5
Threatray 9'845 similar samples on MalwareBazaar
TLSH T1C9E48D69F20DE29EFC0903B121257CD424EC1CAD197CF917BEAAB5E230BAD7651F1096
File icon (PE):PE icon
dhash icon 10195813d30b4a66 (3 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
163
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Document.exe
Verdict:
Malicious activity
Analysis date:
2021-09-29 19:04:14 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/c9540669-079f-4593-87ed-c8053f2f4869

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/193186/
Detection(s):
SecuriteInfo.com.Scr.Malcodegdn30.2673.8795.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/dfdaea1a-dbad-411c-9c9e-da0e9584f867
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/861393
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
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)
Multi AV Scanner detection for submitted file
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:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 493860 Sample: Document.exe Startdate: 30/09/2021 Architecture: WINDOWS Score: 100 31 www.kemelle.com 2->31 33 www.franzapparel.com 2->33 35 HDRedirect-LB7-5a03e1c2772e1c9c.elb.us-east-1.amazonaws.com 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 9 other signatures 2->49 11 Document.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\Document.exe.log, ASCII 11->29 dropped 59 Tries to detect virtualization through RDTSC time measurements 11->59 61 Injects a PE file into a foreign processes 11->61 15 Document.exe 11->15         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 18 explorer.exe 15->18 injected process9 dnsIp10 37 www.askkfamilyboutique.com 199.34.228.188, 49789, 80 WEEBLYUS United States 18->37 39 www.whatcomfreightequipment.com 18->39 41 6 other IPs or domains 18->41 51 System process connects to network (likely due to code injection or exploit) 18->51 22 msiexec.exe 18->22         started        signatures11 process12 signatures13 53 Self deletion via cmd delete 22->53 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d5a3b850dc0e753c98a4ff8d4fdf8c8cdd58b0e134e741db5a34b47e7accf0cc/
Threat name:
Win32.Trojan.Sabsik
Create hunting rule
Status:
Malicious
First seen:
2021-09-29 13:05:06 UTC
AV detection:
12 of 45 (26.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2wr3qug4bz2tzgfe76gu7x4mrtovrmhbgttudw22gs2h46wm6dga._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2eb844b531f53a22bd20a919fda7cb483283c2e0cfc9968bca6b0c8792be580c
Formbook
3046d29324f18d00e2603aa26674aa29e9cc9ff3e110fb51e23204ff06e36f70
Formbook
64c00be3d0bc5f000ee6d2d6d49e72c9e9f36090f19b7f9620ff0993a0e84025
Formbook
75772375acbcfb6cb668fc2449671a6a83afe1434184ac7c01fd895825fcf5e6
Formbook
87f8905d999f293634fddf1bff47a614041bdfaa2f07ef19fe70e5296a7b086e
Formbook
a325ff051ebc1d366533e22fba4a75a4c0b183a28457ed2fea0841f68da06334
Formbook
a7acd97fcff334160640901d977010aa55397f5a6da375ab38bcb1622b800f7d
Formbook
dae6ba220bb0a34de731b57965753391343bfe96f9f3fa4fea48102d3377ccf7
Formbook
ee3ae7c76f41fab122d32494212625226a1784fb209b46b657272f0f3f0158b9
Formbook
+ 9'835 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:fshh loader rat
Link:
https://tria.ge/reports/210929-qbhaaafab7/
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
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.askkfamilyboutique.com/fshh/
Unpacked files
SH256 hash:
a9f4ef8fcaf4e7b772c00c1a2ec7ac21215074aa99013a41efb28da4adae2312
MD5 hash:
620ff20d64c71cf99c2250cc46738612
SHA1 hash:
c51e4ae49afab27044f3d05c01be2c8ebb806f9b
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3dc5af6d-0a53-4b9a-b99b-d4cfa94a6530/
Parent samples :
3046d29324f18d00e2603aa26674aa29e9cc9ff3e110fb51e23204ff06e36f70
2eb844b531f53a22bd20a919fda7cb483283c2e0cfc9968bca6b0c8792be580c
d5a3b850dc0e753c98a4ff8d4fdf8c8cdd58b0e134e741db5a34b47e7accf0cc
SH256 hash:
04182a6e5b1ac78c78c01b2fce0556c43af9e905cd89ecbe3343e6f9daf2f839
MD5 hash:
cfaa0ad96863314bfb2da36017013417
SHA1 hash:
d8e86025124ae23afd4020f6c3b4e512dc2773f2
Link:
https://www.unpac.me/results/3dc5af6d-0a53-4b9a-b99b-d4cfa94a6530/
SH256 hash:
0296c930556af9904e75cf98187660355a893f9d893d73043d3114d8494b5922
MD5 hash:
6f64b8b054a61299ae8d164ec02f3357
SHA1 hash:
b6fdd033511a047597699dc795d9672306e968f1
Link:
https://www.unpac.me/results/3dc5af6d-0a53-4b9a-b99b-d4cfa94a6530/
SH256 hash:
6fef8420a8bd6a90cfe7ac8aeb0e3811422b9b6cb9e0b14ea03f5236438f72ba
MD5 hash:
10c7772f435231d58046e0dc34def127
SHA1 hash:
38c8f9ffb5136848d62582ef41bab6c810121c74
Link:
https://www.unpac.me/results/3dc5af6d-0a53-4b9a-b99b-d4cfa94a6530/
SH256 hash:
f7d272daf3522f99ca67b99bfe557564baba239104c7f20cef842f2e870bdf28
MD5 hash:
cceaca53d81061c0f1c6cf35ca7bf34b
SHA1 hash:
23ba45b249e0e4bdc5a8d4b4b07e2f7509cf85be
Link:
https://www.unpac.me/results/3dc5af6d-0a53-4b9a-b99b-d4cfa94a6530/
SH256 hash:
d5a3b850dc0e753c98a4ff8d4fdf8c8cdd58b0e134e741db5a34b47e7accf0cc
MD5 hash:
61498fdfcfdec5aa4d99e775e58142e3
SHA1 hash:
7fe70bb27f8d899b9acf3765fdb92782f9c0a9da
Link:
https://www.unpac.me/results/3dc5af6d-0a53-4b9a-b99b-d4cfa94a6530/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/d5a3b850dc0e753c98a4ff8d4fdf8c8cdd58b0e134e741db5a34b47e7accf0cc

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
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

Executable exe d5a3b850dc0e753c98a4ff8d4fdf8c8cdd58b0e134e741db5a34b47e7accf0cc

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/193186/

Comments