MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4bffffde56eece4e7588a5ebe9c7f53c822e516442a16eb351437807f0da841f. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
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SHA256 hash: 4bffffde56eece4e7588a5ebe9c7f53c822e516442a16eb351437807f0da841f
SHA3-384 hash: 0b490bf9df9588b6634b91aca7184cf309fcacb3f6bed715d09bb686327b36529b817e8227d1ba694e171037fb56fd57
SHA1 hash: 371964402d1523c3783cc98479d1ca1e53b752b8
MD5 hash: c6b35f353ddce781f1ad2bfa077a872c
humanhash: pasta-glucose-oregon-tennis
File name:vbc.exe
Download: download sample
Signature Formbook
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File size:691'200 bytes
First seen:2021-06-30 11:41:27 UTC
Last seen:2021-06-30 12:35:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:DoKgrwGBbX5Ty9oN2ibz0STq/+gQRI+6d3g5tWHEqfE7w77xDVLmdj:DoKgrPjN2MiQ2+6d3g5tWHEJe7xDM
Threatray 5'990 similar samples on MalwareBazaar
TLSH 1EE48D312BA85A39E0B69FBDD5A1208197EEF6136F03D85C78B501C54753E83C9F262E
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
142
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
vbc.exe
Verdict:
Malicious activity
Analysis date:
2021-06-30 11:44:25 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/7b3b2a21-865e-40b0-966d-a5eec9c4e256

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.899.12139.22718.UNOFFICIAL
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Result
Verdict:
UNKNOWN
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/88904fa2-3bb7-42bd-8304-ec00b543bd54
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/809921
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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)
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 AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 442332 Sample: vbc.exe Startdate: 30/06/2021 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 6 other signatures 2->42 10 vbc.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\Local\...\vbc.exe.log, ASCII 10->28 dropped 52 Tries to detect virtualization through RDTSC time measurements 10->52 54 Injects a PE file into a foreign processes 10->54 14 vbc.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 www.jadeena.com 154.222.229.57, 80 VPSQUANUS Seychelles 17->30 32 www.etnttcil.com 103.20.127.61, 49740, 80 JUSTDIAL-AS-INPalmCourtBldgM501B5thFloorNewLink India 17->32 34 8 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 help.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/4bffffde56eece4e7588a5ebe9c7f53c822e516442a16eb351437807f0da841f/
Threat name:
ByteCode-MSIL.Trojan.Wacatac
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Status:
Malicious
First seen:
2021-06-30 11:41:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jp777xsw53he45miuxv6tr7vhsbc4uleikqw5m2rin4ap4g2qqpq._file
Verdict:
malicious
Label(s):
formbook
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Similar samples:
1bcb33eed3dc2a21fba05a84a06d63d2313c4b69e0eb6db6e781ffa7a7732b03
Formbook
4634683041f3a17fd3e66e086f2730d0f130bcbb0cd55594a697f140a43f87be
Formbook
6fac6e1f7f8cdd8cec52b2dd7a23fd434084c7d12ef0f04deaa52794d3612ef7
Formbook
8b225e713429dd95fed7fe2af260d9076d627279fc86d152baedd973f0b72304
Formbook
98a634da7b379b6369d5b7445c7aeb5a58aa195c8f088bf11c84c77ba2c972fd
Formbook
a47054787772fce1a96257aa9f1a70356fb752ba73ee714beed7826796db3a13
Formbook
b5e2b52a984579c7f0aa92d0acaa6eef67f06af5330857ba98a62345edd59908
Formbook
c78f3f2b625c15d32603674847f55476931893c024fad6fccd61c9916ee32528
Formbook
e091222f766082c33c0606405115206cb2d915929dfe2ac899b1945d6442c512
Formbook
ebe1f420ea3fcef5b426cf6458d23984e12c4ceb5983571699f60aaa963b159a
Formbook
+ 5'980 additional samples on MalwareBazaar
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210630-wb28v7ef2a/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Uses the VBS compiler for execution
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.etnttcil.com/usur/
Unpacked files
SH256 hash:
d78397bc48f92a4cc89c95b735ccda49ceb6be731aedf04dd022287e61e5dea8
MD5 hash:
19326cc6d3ff74cef76148363025af24
SHA1 hash:
a2fe15b5d46fcdcfdc31ed21024b72f22011a761
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/6e01b34f-edca-4cf1-9546-6b059c9b89eb/
SH256 hash:
5ac9aba89708b710c529f3d45efe5eda6982e65cb49b14ac4774cf0f650cf928
MD5 hash:
6db1f068d04877c23676fccd2adda5d0
SHA1 hash:
0a1390a3b04d602579aceb5ae07f89dd9254b6c6
Link:
https://www.unpac.me/results/6e01b34f-edca-4cf1-9546-6b059c9b89eb/
SH256 hash:
1c5e0a0d909d1da24af87967a1e154c8aa490a1f99c6624e7214d20eb84f4fec
MD5 hash:
81faf15c7e3c9446d906659f7c7a9f16
SHA1 hash:
d7e05a22b109ce608109dc509029a7fe22b4b8bf
Link:
https://www.unpac.me/results/6e01b34f-edca-4cf1-9546-6b059c9b89eb/
SH256 hash:
4bffffde56eece4e7588a5ebe9c7f53c822e516442a16eb351437807f0da841f
MD5 hash:
c6b35f353ddce781f1ad2bfa077a872c
SHA1 hash:
371964402d1523c3783cc98479d1ca1e53b752b8
Link:
https://www.unpac.me/results/6e01b34f-edca-4cf1-9546-6b059c9b89eb/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/4bffffde56eece4e7588a5ebe9c7f53c822e516442a16eb351437807f0da841f

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: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.

  
Delivery method
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