MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99cfc0e79eca01b80f6b466bd9bf208b821e275b3787cb194d0f2b83d6ffe03a. 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: 99cfc0e79eca01b80f6b466bd9bf208b821e275b3787cb194d0f2b83d6ffe03a
SHA3-384 hash: 7435fb3aeceb3559f20f3a6f6c171e4629ed4cf8125544a9f45fe2690c8f8fdbcdcd45febf355a38334ebad959cb77ff
SHA1 hash: 27726ee6291da5115b6192a72bcf7a1a72b75531
MD5 hash: 3fc88e57a74c7c133ae634c79f037be3
humanhash: nineteen-mars-mango-bluebird
File name:3fc88e57a74c7c133ae634c79f037be3.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:819'200 bytes
First seen:2021-03-07 07:45:25 UTC
Last seen:2021-03-07 09:32:27 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 6144:PNB/gowlMtVG5JfQPU06c/be8sa1FPbsNfSUr94b0n+bebQ27Hc:P/yML8JfzO/bkiFTsNfScGbNebQ278
Threatray 4'078 similar samples on MalwareBazaar
TLSH D5059E34F9E99039F176BF750AF067B14AAEBE222603E95D3554338A06326C1CDD3D29
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
246
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
03052021.xlsx
Verdict:
Malicious activity
Analysis date:
2021-03-07 00:20:09 UTC
Tags:
encrypted exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/bb463650-1d8d-4d9b-a11b-01dc79de6f45

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/122676/
Detection(s):
SecuriteInfo.com.Variant.Bulz.384995.5620.24152.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
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/630639
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)
Multi AV Scanner detection for domain / URL
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: 364291 Sample: P87k5f5ecn.exe Startdate: 07/03/2021 Architecture: WINDOWS Score: 100 33 www.mgg360.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Multi AV Scanner detection for domain / URL 2->43 45 Found malware configuration 2->45 47 8 other signatures 2->47 11 P87k5f5ecn.exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\user\AppData\...\P87k5f5ecn.exe.log, ASCII 11->31 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 15 P87k5f5ecn.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 15->18 injected process9 dnsIp10 35 pandabutik.com 78.142.208.189, 49727, 80 VERIDYENVeridyenBilisimTeknolojileriSanayiveTicaretLi Turkey 18->35 37 g.17986.net 104.160.174.162, 49738, 80 ST-BGPUS United States 18->37 39 22 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 22 msiexec.exe 18->22         started        25 autoconv.exe 18->25         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 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/99cfc0e79eca01b80f6b466bd9bf208b821e275b3787cb194d0f2b83d6ffe03a/
Threat name:
Win32.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-03-07 07:46:07 UTC
AV detection:
14 of 47 (29.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=thh4bz46zia3qd3lizv5tpzarobb4j23g6d4wgknb4vyhvx74a5a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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Formbook
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Formbook
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Formbook
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Formbook
21ba0bed0b05a2ce68496e73a5c103fb5b815ac2c77e997f46e5d09666c1c978
Formbook
43aa01ebbd20c81ee60bd5b6bacabcdd0a84e0aeb892c0ea18383261dbcdb0fb
Formbook
7c201535a28746b62adfa831cfccac096903f5b17ee83b8364fc890fa70a59fd
Formbook
af05a9b5f7ed6483d7f10ea0e521e0a15fd90d224ca04a9665991ab630a54991
Formbook
e3670bfc1db6fb7223bb6b231ef4c3afd9d34de1d8f87b7a8e7a4cb27cfaa37d
Formbook
+ 4'068 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210307-779aqvvsyj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.rizrvd.com/bw82/
Unpacked files
SH256 hash:
f9d949d2f56c449c5d346bb93ed04d38426f563b022dd179ae330dab46682c3b
MD5 hash:
871e23d748ba756eaab5777708f250f8
SHA1 hash:
c9816d4ab38541aaab9aa3eab7cb4898d0b72e4a
Link:
https://www.unpac.me/results/17a4279b-d394-465f-9a48-9b35272b5ae9/
SH256 hash:
99cfc0e79eca01b80f6b466bd9bf208b821e275b3787cb194d0f2b83d6ffe03a
MD5 hash:
3fc88e57a74c7c133ae634c79f037be3
SHA1 hash:
27726ee6291da5115b6192a72bcf7a1a72b75531
Link:
https://www.unpac.me/results/17a4279b-d394-465f-9a48-9b35272b5ae9/
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/99cfc0e79eca01b80f6b466bd9bf208b821e275b3787cb194d0f2b83d6ffe03a

File information

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

Web download

Formbook

Executable exe 99cfc0e79eca01b80f6b466bd9bf208b821e275b3787cb194d0f2b83d6ffe03a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1049934/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/122676/

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