MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4253f88eb5e931720c16e56f49babfbf8db93eaa8b6f85146cc2d690aee2b9d2. 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
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SHA256 hash: 4253f88eb5e931720c16e56f49babfbf8db93eaa8b6f85146cc2d690aee2b9d2
SHA3-384 hash: f9e3ba3ae4848ecf056f15e27366b2c165bd44a8e2f2c5347587033fffdcc8c90c54bfec14f5530559ae6b327d7ef392
SHA1 hash: beee5a6387e2e222de0b6335db92c88776f02531
MD5 hash: 897cd255db770c4a0e0ef4b5e01e65c3
humanhash: leopard-india-stream-south
File name:897cd255db770c4a0e0ef4b5e01e65c3.exe
Download: download sample
Signature Formbook
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File size:741'376 bytes
First seen:2021-11-22 13:40:06 UTC
Last seen:2021-11-22 15:49:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:88OF+HRZjhdxwZnzW4bfeZNdo+X5xUQnyYa4tL+h:BcnzoZNGiPUTp4t6h
Threatray 11'500 similar samples on MalwareBazaar
TLSH T150F45B3072957396CC764BB80C6461C42737B6493D08D75DACC922DEAD62F6B8B237A3
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
122
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
897cd255db770c4a0e0ef4b5e01e65c3.exe
Verdict:
Suspicious activity
Analysis date:
2021-11-22 13:54:43 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a94a99b2-69c2-4502-bf0c-4f88ff34f957

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.32712.14398.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Unauthorized injection to a recently created process
Creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/619b9def94a88037d2fe6d56/reports/88f6a9ff-441a-4165-b3c4-eeacde6100db/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4cfba519-8450-491b-a5d4-bf22b2168e2e
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/893864
Signature
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 dnsIp2 2 Behavior Graph ID: 526347 Sample: HG0uDx2zkt.exe Startdate: 22/11/2021 Architecture: WINDOWS Score: 100 37 www.babehairboutique.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 6 other signatures 2->51 10 HG0uDx2zkt.exe 3 2->10         started        signatures3 process4 file5 35 C:\Users\user\AppData\...\HG0uDx2zkt.exe.log, ASCII 10->35 dropped 63 Tries to detect virtualization through RDTSC time measurements 10->63 14 HG0uDx2zkt.exe 10->14         started        17 HG0uDx2zkt.exe 10->17         started        19 HG0uDx2zkt.exe 10->19         started        21 HG0uDx2zkt.exe 10->21         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 14->65 67 Maps a DLL or memory area into another process 14->67 69 Sample uses process hollowing technique 14->69 71 Queues an APC in another process (thread injection) 14->71 23 WWAHost.exe 14->23         started        26 explorer.exe 14->26 injected process9 dnsIp10 53 Self deletion via cmd delete 23->53 55 Modifies the context of a thread in another process (thread injection) 23->55 57 Maps a DLL or memory area into another process 23->57 59 Tries to detect virtualization through RDTSC time measurements 23->59 29 cmd.exe 1 23->29         started        39 parkingpage.namecheap.com 198.54.117.211, 49781, 80 NAMECHEAP-NETUS United States 26->39 41 mvrsfaq.com 34.102.136.180, 49805, 80 GOOGLEUS United States 26->41 43 2 other IPs or domains 26->43 61 System process connects to network (likely due to code injection or exploit) 26->61 31 autoconv.exe 26->31         started        signatures11 process12 process13 33 conhost.exe 29->33         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/4253f88eb5e931720c16e56f49babfbf8db93eaa8b6f85146cc2d690aee2b9d2/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-11-22 10:23:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
32
AV detection:
22 of 44 (50.00%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
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Similar samples:
314bd86207357fc3a95e237d2728a03369d2707a9c6adc333d6a5398bfc80767
Formbook
3204a354d2ccb2058144116ede288693583a38b0c84b41903c2ceaebd19e9348
Formbook
557260d94ea20dcd980632dbc467735f881adf78037f64198931427a2d3a4347
Formbook
55e7f104009ae1f8c59a850b57d7f660dbb8dc7cdeeadc7c1c396294bb656ac0
Formbook
5824f8d2a1ca44f7fb1aa815930628448e183d6f9344a3f289c8a56953a52afb
Formbook
6bce7b4a9dc4b092b2940ee941b8defdc5d60c56a57b2621aa3ac6b957e3cdfd
Formbook
6cbe56928a6ebd559194c8ca4537521d2485a728598d679d2d70de7052cb1501
Formbook
e22a659b73048b31aba79fce8de22ddd5a287494b763fec8d5779869dfebbf31
Formbook
ea074d89ce669e6d00d54a7fce58a5394a075611740346df298cb55926ac9a55
Formbook
+ 11'490 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:cy88 rat spyware stealer trojan
Link:
https://tria.ge/reports/211122-qy4f2affap/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.jamesobrien.school/cy88/
Unpacked files
SH256 hash:
b9da25075c3e27a81cdf9207fbd574f974b87ec847bfcdef59d8bd8fade072e0
MD5 hash:
98574b67657a1644171b3038cfd9561b
SHA1 hash:
6fcd3a68800350b0152f995b8e79c15b09eb44d5
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/1ebf4c63-c562-45a6-ba49-fe66249b5272/
Parent samples :
a1c782659ddb9232f1d6b0619efe815b0fb61d6c4524e28dbfb3bae4b449738a
6bce7b4a9dc4b092b2940ee941b8defdc5d60c56a57b2621aa3ac6b957e3cdfd
557260d94ea20dcd980632dbc467735f881adf78037f64198931427a2d3a4347
ea074d89ce669e6d00d54a7fce58a5394a075611740346df298cb55926ac9a55
55e7f104009ae1f8c59a850b57d7f660dbb8dc7cdeeadc7c1c396294bb656ac0
4253f88eb5e931720c16e56f49babfbf8db93eaa8b6f85146cc2d690aee2b9d2
SH256 hash:
da287fee279bb9f68443c7ad19578d9700b07be935e141cf39fdf22867fe59d0
MD5 hash:
b451a21ac2cb490f7a394f7977bc831a
SHA1 hash:
710dc6a64e4b87bd92a40370358705e4e7a2d3a5
Link:
https://www.unpac.me/results/1ebf4c63-c562-45a6-ba49-fe66249b5272/
SH256 hash:
f30ca642597c059f9dbcc6cfea27687245fbcaf5456be0b7a4528d946f3a0a05
MD5 hash:
0f6349011cf5446131faf0cadbace87b
SHA1 hash:
0cd48b5cb5a0ca095043c333c9002ba5273e92e8
Link:
https://www.unpac.me/results/1ebf4c63-c562-45a6-ba49-fe66249b5272/
SH256 hash:
4253f88eb5e931720c16e56f49babfbf8db93eaa8b6f85146cc2d690aee2b9d2
MD5 hash:
897cd255db770c4a0e0ef4b5e01e65c3
SHA1 hash:
beee5a6387e2e222de0b6335db92c88776f02531
Link:
https://www.unpac.me/results/1ebf4c63-c562-45a6-ba49-fe66249b5272/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4253f88eb5e9/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/4253f88eb5e931720c16e56f49babfbf8db93eaa8b6f85146cc2d690aee2b9d2

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
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Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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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 4253f88eb5e931720c16e56f49babfbf8db93eaa8b6f85146cc2d690aee2b9d2

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/208192/
  
URLhaus
https://urlhaus.abuse.ch/url/1763345/
  
Delivery method
Distributed via web download

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