MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b877e6f41d83c546f056fa7f88b5f323d944616a9919025e71971d034b56b592. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b877e6f41d83c546f056fa7f88b5f323d944616a9919025e71971d034b56b592
SHA3-384 hash: ddf81da4491b5b76f2b5e81b0d09ee64df890d2e1afa28436788192701a4bd85ae8a1d3d303eb8aa3b03b981b1c4aaf9
SHA1 hash: c30215690fd50233a94d58400ab2f9010a4887e7
MD5 hash: a86dedf95d0d7a02c577ea6333686a47
humanhash: saturn-solar-florida-seven
File name:a86dedf95d0d7a02c577ea6333686a47.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:556'032 bytes
First seen:2021-10-12 10:14:30 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:HMcTti2fFn+fmgreKLbff0m1ltwrL290sZD0VIpZeuVyJetSB:Hkmn+fPxzsmfkL290cFJIRB
Threatray 10'346 similar samples on MalwareBazaar
TLSH T1ECC412516BBFDE16C01B1BFD505A63F343B9B46281CAE746798072FFB4223552EC128A
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
151
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a86dedf95d0d7a02c577ea6333686a47.exe
Verdict:
Suspicious activity
Analysis date:
2021-10-12 10:20:41 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/30dd1ffa-a92e-496b-babd-3f329ce34bd3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/196894/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/616560301c2d58ba74030120/reports/01a42305-3814-4f82-af15-20707cc39030/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/a5a5455d-a6e3-418d-9441-2b0ec1a3cd78
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/868567
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
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
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 signatures2 2 Behavior Graph ID: 500990 Sample: UzUSWe10P9.exe Startdate: 12/10/2021 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 7 other signatures 2->42 10 UzUSWe10P9.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\UzUSWe10P9.exe.log, ASCII 10->28 dropped 54 Tries to detect virtualization through RDTSC time measurements 10->54 14 UzUSWe10P9.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 30 gamodaitaliana.online 195.110.124.133, 49822, 80 REGISTER-ASIT Italy 17->30 32 bedandbreakfastitalia.cloud 62.149.128.40, 49798, 80 ARUBA-ASNIT Italy 17->32 34 3 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 msdt.exe 17->21         started        signatures10 process11 signatures12 46 Self deletion via cmd delete 21->46 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b877e6f41d83c546f056fa7f88b5f323d944616a9919025e71971d034b56b592/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-10-12 10:15:12 UTC
AV detection:
16 of 28 (57.14%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
3c5d2a990e487ad59a140909b2e6047494467b163f6696be5e247f644e4c3210
Formbook
4a028b7f272dd96c75716d2268b551576a01ebccaca97bb19da43ec21dbe8514
Formbook
54507294252cb270a6b1944f838eb0428d87fbcfaf05e887126d5754af3ec1fa
Formbook
62ee412123d6e8832cebbf33d84d5695adc4fc2d66f0ec7222d9ccd5f21d4866
Formbook
7e647d064a55731e15f05904b636037d2339e84ca425f53cf752004cd8797468
Formbook
83c49019ef9b9520235af445b484a3b3f275729cd92bb960a9264d6704190329
Formbook
c63cb761da677849b8382eb1d926569f00a04d57f2c789b63e7f2eb2e368a00c
Formbook
f03c40561ba64d0797bcf79bfefd015c8d9ca010f1bd67b3d27ffab584a9911e
Formbook
f2a5c2addef1471e98841eb5f2abbc5cd27c360f8850a69ef0a233d07744a9b8
Formbook
+ 10'336 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:fzsg rat spyware stealer trojan
Link:
https://tria.ge/reports/211012-l984facag5/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.grouplmc.com/fzsg/
Unpacked files
SH256 hash:
83b90d18ad1250a4604f1417f23754c65f834f8c7f1fd29b9f2f634315203fd3
MD5 hash:
4a78ff31505436877b5f3e8378e9baf7
SHA1 hash:
1155e26225d3aae4d49a0645e452d22337f5baa0
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/307c2f0a-36cb-4dc7-8f88-daf98ff60890/
Parent samples :
f03c40561ba64d0797bcf79bfefd015c8d9ca010f1bd67b3d27ffab584a9911e
54507294252cb270a6b1944f838eb0428d87fbcfaf05e887126d5754af3ec1fa
83c49019ef9b9520235af445b484a3b3f275729cd92bb960a9264d6704190329
7e647d064a55731e15f05904b636037d2339e84ca425f53cf752004cd8797468
62ee412123d6e8832cebbf33d84d5695adc4fc2d66f0ec7222d9ccd5f21d4866
3c5d2a990e487ad59a140909b2e6047494467b163f6696be5e247f644e4c3210
b877e6f41d83c546f056fa7f88b5f323d944616a9919025e71971d034b56b592
SH256 hash:
2757efb3a3404478e698c5a820c4938f4d4c14567adf7f3bd2e4b4b6b2472dda
MD5 hash:
05304a08830a2ae74826abfadfba0ce0
SHA1 hash:
875eee6b238d3770c11594445438466d980d30ae
Link:
https://www.unpac.me/results/307c2f0a-36cb-4dc7-8f88-daf98ff60890/
SH256 hash:
eda4d687b865aed0078ab87078de7d9722888b2d2af71c6fc0dcdc986ffb7567
MD5 hash:
12cf5402be16590c300b442a66e9ebc1
SHA1 hash:
0ea28394d301ca1ce840f039d2da62a5ce6d9334
Link:
https://www.unpac.me/results/307c2f0a-36cb-4dc7-8f88-daf98ff60890/
SH256 hash:
b877e6f41d83c546f056fa7f88b5f323d944616a9919025e71971d034b56b592
MD5 hash:
a86dedf95d0d7a02c577ea6333686a47
SHA1 hash:
c30215690fd50233a94d58400ab2f9010a4887e7
Link:
https://www.unpac.me/results/307c2f0a-36cb-4dc7-8f88-daf98ff60890/
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/b877e6f41d83c546f056fa7f88b5f323d944616a9919025e71971d034b56b592

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.

Web download

Formbook

Executable exe b877e6f41d83c546f056fa7f88b5f323d944616a9919025e71971d034b56b592

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/196894/
  
URLhaus
https://urlhaus.abuse.ch/url/1667902/
  
Delivery method
Distributed via web download

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