MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b965f4ea5c34bfe9d6a04a882e5360b1f968241a0c8a7d678121f984147730f. 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: 11


Intelligence 11 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3b965f4ea5c34bfe9d6a04a882e5360b1f968241a0c8a7d678121f984147730f
SHA3-384 hash: fc738689dbaa98c1f23f2c1a98979aeae7d5d8c00a9f4889505f0f41f9afbe14f14e392e50315da579ca58045869ed18
SHA1 hash: 844d7249c7bd750414fe36b995c72f7df6fa83f9
MD5 hash: 8833c1c4a4896803032d60ba94b11c8d
humanhash: kansas-alabama-georgia-nebraska
File name:8833c1c4a4896803032d60ba94b11c8d.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:668'672 bytes
First seen:2021-03-02 18:00:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:dd6+IMc8YB01QhuCDvGMatco3+idLue8RcvMRu86IdqLcpgwv:dw+0EMa7bicvMRuDLO
Threatray 3'534 similar samples on MalwareBazaar
TLSH 3AE41A20269EB15AF2B27B39467A57424365FCDB2602CC4F24707F4A1AFA743CE62735
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
212
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a185a9d62f17e57b62b410f2f1acdb3c1bcea9a2789b4c8b203ed74ece81b5fd
Verdict:
Malicious activity
Analysis date:
2021-03-02 09:10:23 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/45d80434-b155-4f37-bbc4-b0b60678bfa6

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/121133/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.36429463.22470.13339.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/624508
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
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
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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 361251 Sample: yl7ozfR7hQ.exe Startdate: 02/03/2021 Architecture: WINDOWS Score: 100 33 www.788wang.com 2->33 35 prod-sav-park-lb01-1919960993.us-east-2.elb.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 8 other signatures 2->49 11 yl7ozfR7hQ.exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\user\AppData\...\yl7ozfR7hQ.exe.log, ASCII 11->31 dropped 59 Tries to detect virtualization through RDTSC time measurements 11->59 15 yl7ozfR7hQ.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 37 www.naanaopokuagyemang.com 74.220.199.6, 49748, 80 UNIFIEDLAYER-AS-1US United States 18->37 39 www.azerni.com 162.213.253.238, 49747, 80 NAMECHEAP-NETUS United States 18->39 41 www.thefetshop.com 18->41 51 System process connects to network (likely due to code injection or exploit) 18->51 22 mstsc.exe 18->22         started        25 autochk.exe 18->25         started        signatures11 process12 signatures13 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 57 Tries to detect virtualization through RDTSC time measurements 22->57 27 cmd.exe 1 22->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3b965f4ea5c34bfe9d6a04a882e5360b1f968241a0c8a7d678121f984147730f/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-03-02 07:54:29 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=holf6tvfynf75hlkasuifzjwbmpznasbudekpvtycipzqqkhomhq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
15c7c3c6fdf2a32c77d61b021fec1c2d8624a621a906efbf22a5132e1daf14c0
Formbook
219e1bcb43db44538c443e303f0f8849bc44382e3ab6575f4419df311e55dbc7
Formbook
38acc90cd6d33b61b99cca8cf06781e1bd2ab8ffebc3a33e036eca36037d413b
Formbook
50961752207e439abf40cf15d11d20f5c3d9b68067e571c3029c7bce69ffe085
Formbook
5d5d64a87a5d888443e8d7a25046922fa4a39fe5952a45635dd66321e616bb14
Formbook
720ffc99aa96c665aae27db46f776476c37ca113db207790579adfd81c73ad05
Formbook
8c5a90a4c4470d05fff7757920aa0a8bf56edab04f4eb926ba789652f1bfc74c
Formbook
8cbda95915fcb9696e4e221cdb72f9dc9175af27e348f05bede3f988aee9070c
Formbook
e68f17cfe87742103150ca9abd6cc16581caa6e0e0243d03fae2c89c2609c974
Formbook
f130539b2d2324246449abb99f5a0effb214feee629b092d48ac63aca14e2ba6
Formbook
+ 3'524 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210302-4dtgpb6v16/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.arcticairpetchill.com/dgn/
Unpacked files
SH256 hash:
f9d949d2f56c449c5d346bb93ed04d38426f563b022dd179ae330dab46682c3b
MD5 hash:
871e23d748ba756eaab5777708f250f8
SHA1 hash:
c9816d4ab38541aaab9aa3eab7cb4898d0b72e4a
Link:
https://www.unpac.me/results/8a0dc323-1d12-48c7-b63c-16061c16de24/
SH256 hash:
3b965f4ea5c34bfe9d6a04a882e5360b1f968241a0c8a7d678121f984147730f
MD5 hash:
8833c1c4a4896803032d60ba94b11c8d
SHA1 hash:
844d7249c7bd750414fe36b995c72f7df6fa83f9
Link:
https://www.unpac.me/results/8a0dc323-1d12-48c7-b63c-16061c16de24/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/3b965f4ea5c34bfe9d6a04a882e5360b1f968241a0c8a7d678121f984147730f

File information

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

Web download

Formbook

Executable exe 3b965f4ea5c34bfe9d6a04a882e5360b1f968241a0c8a7d678121f984147730f

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/121133/
  
URLhaus
https://urlhaus.abuse.ch/url/1028827/
  
Delivery method
Distributed via web download

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