MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 20b597d93eb4d2b2bc15ff25aebb0d171918f99047c31f6eb728833967c8c37f. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 20b597d93eb4d2b2bc15ff25aebb0d171918f99047c31f6eb728833967c8c37f
SHA3-384 hash: 4902b39183adf5fe39abd7b473dd2f8cb7d584a668c8b5d211979b0994528b5f0eec729d39cf51781d13d0f6242fdd85
SHA1 hash: 1cba6dcea6d3ddf86438c3107d38620a52ca1417
MD5 hash: 246284cbcfe1cb851bada6dd84b70e80
humanhash: delaware-london-nitrogen-early
File name:Roominglist.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:260'218 bytes
First seen:2021-08-12 01:17:00 UTC
Last seen:2021-08-12 01:36:34 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 48cf05311e4a3e8be7b754cbebbc2209 (5 x Loki, 2 x Formbook, 1 x a310Logger)
ssdeep 6144:cHELyizo4hTiZM9bCQUO0NAMlfmptut/AKkkBBiQd/PE:c7is4UZ3NxlSiYKPMQJM
Threatray 7'774 similar samples on MalwareBazaar
TLSH T17E441298C7E1D412E820F9FAA02D4FF88B7BED782065D85A9D90BC1C693D64DD4BD342
dhash icon 3b61c9193925956b (5 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
282
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Roominglist.exe
Verdict:
Malicious activity
Analysis date:
2021-08-12 01:19:39 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/1cd33e8b-33a8-4704-bbbd-bbb843a6f791

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/178419/
Detection(s):
PUA.Win.Packer.NspackDotnetNor-2
Create hunting rule

PUA.Win.Packer.NspackDotnetNor-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Sending a UDP request
Launching a process
Launching cmd.exe command interpreter
DNS request
Connection attempt
Sending an HTTP GET request
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
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/c733c989-b37d-4f55-908c-6f16f21aec3d
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/831330
Signature
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 463761 Sample: Roominglist.exe Startdate: 12/08/2021 Architecture: WINDOWS Score: 100 34 www.verlan.guru 2->34 36 rebrandlydomain.com 2->36 40 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 5 other signatures 2->46 11 Roominglist.exe 2->11         started        signatures3 process4 signatures5 54 Detected unpacking (changes PE section rights) 11->54 56 Maps a DLL or memory area into another process 11->56 58 Tries to detect virtualization through RDTSC time measurements 11->58 14 Roominglist.exe 11->14         started        process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 17 explorer.exe 14->17 injected process8 dnsIp9 28 baby-gene.com 185.106.128.228, 49745, 80 PARTNER-ASIL Israel 17->28 30 www.hodu61.net 104.21.33.158, 49732, 80 CLOUDFLARENETUS United States 17->30 32 2 other IPs or domains 17->32 38 System process connects to network (likely due to code injection or exploit) 17->38 21 WWAHost.exe 17->21         started        signatures10 process11 signatures12 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:
n/a
Link:
https://mwdb.cert.pl/sample/20b597d93eb4d2b2bc15ff25aebb0d171918f99047c31f6eb728833967c8c37f/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2021-08-11 06:37:37 UTC
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ec2zpwj6wtjlfpav74s25oync4mrr6mqi7br63vxfcbtsz6iyn7q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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0655ee712ee939add7c23e011eb887fe70f085e1fea6df1dbeb07bc8df7ffdb7
Formbook
0fd4759551d1a32568250aac71951d0eec9d673e205644a45e9cbf2192de2c40
Formbook
27b3ee09de06ff54ca8947425175ff4c07f48dc07df976ab42a7990ceeb5232c
Formbook
70fd882cc398bdba539098c530093e45b505c386223b6ec376eff38113624d82
Formbook
744400d590042d779a25401879f9906b979e32bba3fac355a0ff2d5a00f4fcfc
Formbook
9624205b61e073bf50cf19e4c5412bf620218a2637315701c5fa78de627a5944
Formbook
a3703cc485d2a99cfec122203ed2d7dd83274af8bd0b3bcfab3fd590dd5c308c
Formbook
e197309f79a43cdeccdc0b69344a36abc6c23fb8eef66063e4eb5cc443ee9d4d
Formbook
f4171526b06d5a9c867e81cd7d8a808fd0897209e18005fe83a969324321bacd
Formbook
+ 7'764 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ckvl rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/210812-94r18999ya/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.verlan.guru/ckvl/
Unpacked files
SH256 hash:
4841df7d7b3e8dc721d3c54f4fe16bedc2ed099dcbd813807c089674b73f8596
MD5 hash:
d0376de9390f4cfecdff7a60bb5c5da0
SHA1 hash:
98b6d47b75957c111daa94c70edb901ee2e5ab96
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/774c393d-a10c-4649-a452-5f40adf62ac4/
Parent samples :
253d9cf32609e691876a61247f172b54954d5b081c1c6b449bebccf5dac43c0b
20b597d93eb4d2b2bc15ff25aebb0d171918f99047c31f6eb728833967c8c37f
bd024645f51a267c6d24a75649cb617ac29029d5e9f8a3d8aa8c44b44cf668c9
02b2f3c02cfa488e665ff9e41233993dcfe8f2f02bf79536b1f9c88723ca7c32
25476caca5dd4eca6dea0616d2fdca485866cdd631abda0c410628d5cd9200b9
e77133630fd1d9de3ee373ff4d04898a2b573ea0160b450b5629db347e41d123
SH256 hash:
20b597d93eb4d2b2bc15ff25aebb0d171918f99047c31f6eb728833967c8c37f
MD5 hash:
246284cbcfe1cb851bada6dd84b70e80
SHA1 hash:
1cba6dcea6d3ddf86438c3107d38620a52ca1417
Link:
https://www.unpac.me/results/774c393d-a10c-4649-a452-5f40adf62ac4/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.13
Link:
https://yomi.yoroi.company/submissions/20b597d93eb4d2b2bc15ff25aebb0d171918f99047c31f6eb728833967c8c37f

File information

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

Malspam

Formbook

Executable exe 20b597d93eb4d2b2bc15ff25aebb0d171918f99047c31f6eb728833967c8c37f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/178419/

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