MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3d98af517d49b15dba615482257fd8a72f8810b0d4f18a47fce8bf06b3372fa9. 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: 15


Intelligence 15 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3d98af517d49b15dba615482257fd8a72f8810b0d4f18a47fce8bf06b3372fa9
SHA3-384 hash: 3cbe0a1efdf50a6cc3b5fe0cd24afac235927f616f5379b1401cc0644d44fac2036fee95715a94b0d913564fe551ecc3
SHA1 hash: 20c35e295f12cb5e057b115eb8a2424dda1b77bd
MD5 hash: b2b54e7746c487f283068b5175671d93
humanhash: march-cola-violet-pip
File name:vbc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:988'160 bytes
First seen:2021-12-15 16:20:28 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 24576:U7YeRTnaOSn2b3Ko7zBwR0QbXqy9yojsFBSbYfe5goSK3:yYeTn1zix6SXjvYfRZK3
Threatray 12'320 similar samples on MalwareBazaar
TLSH T1C52523150FA1E627F38E03FF50301650A332E91B7A62D64D3CD966D86F06394974BBA7
Reporter pr0xylife
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
163
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
vbc.exe
Verdict:
Malicious activity
Analysis date:
2021-12-15 16:23:09 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/29ed4276-7cde-4933-a6d2-192a293d5e78

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/214366/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
75%
Tags:
greyware obfuscated packed
Link:
https://www.filescan.io/uploads/61ba15f045ca64e57f11ea56/reports/2809fd63-39ee-45ad-b135-57399f528f92/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9f9c15a8-e1fc-44e4-a049-668a124fbb7a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/908001
Signature
.NET source code contains potential unpacker
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 domain / URL
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
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: 540479 Sample: vbc.exe Startdate: 15/12/2021 Architecture: WINDOWS Score: 100 38 Multi AV Scanner detection for domain / URL 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 7 other signatures 2->44 10 vbc.exe 3 2->10         started        process3 file4 30 C:\Users\user\AppData\Local\...\vbc.exe.log, ASCII 10->30 dropped 56 Tries to detect virtualization through RDTSC time measurements 10->56 14 vbc.exe 10->14         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 17 explorer.exe 14->17 injected process8 dnsIp9 32 www.petncafe.com 17->32 34 www.petncafe.com 121.254.178.253, 49825, 80 LGDACOMLGDACOMCorporationKR Korea Republic of 17->34 36 2 other IPs or domains 17->36 46 System process connects to network (likely due to code injection or exploit) 17->46 21 systray.exe 17->21         started        24 autoconv.exe 17->24         started        signatures10 process11 signatures12 48 Self deletion via cmd delete 21->48 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 26 cmd.exe 1 21->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3d98af517d49b15dba615482257fd8a72f8810b0d4f18a47fce8bf06b3372fa9/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-12-15 14:21:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
14642e431716be5f43044de68f915037e0358a401f59e490f5370cc5563a1a23
Formbook
26b24cfe3b0bb84b26fc83ce689b74728ac61f32391772dcc76eab04cc7042b5
Formbook
2b61cfb00cc8a45fdae91c176c8e68be4ac7cefbe0fab5781e5fa44d2ec4ca9f
Formbook
49609c0487ceeec0771547efd9277b01f494be83549bc0245330672ee962c50c
Formbook
9d542cbd5402390cff627ff88158b1aada6d9f00a8444fcfd321e91385e94f15
Formbook
cda2070ee55a3055530c27a014e076e9c27c6b13105b15b3044b7f6bff3b58d5
Formbook
e6cb9330e6bbd16bdd58aac76070200e17389a45c4aead703d4ab970038ff8a2
Formbook
f383f40cc25197aa00a470f4b549f6da97293ebd87dd80b099d59d5fc7a2dab4
Formbook
f6a7d7226f3d531bd2470eead967b606744105b3e68d50bc8665db0697664651
Formbook
+ 12'310 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:m2i8 rat spyware stealer trojan
Link:
https://tria.ge/reports/211215-ttm52aaaf2/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Uses the VBS compiler for execution
Formbook Payload
Formbook
Unpacked files
SH256 hash:
193571a4bb5c0474cc1c87be1ad0f325ce31fb7f1c8fb3145859edbb07b36b78
MD5 hash:
700b0f7f4e3af27cb5c3d192f8611f7b
SHA1 hash:
3a0509c68f0525368acd68690f85267ce4c60d8d
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/4cb387d3-7e3c-4dea-ba04-9e4dd94ac834/
Parent samples :
f6a7d7226f3d531bd2470eead967b606744105b3e68d50bc8665db0697664651
9d542cbd5402390cff627ff88158b1aada6d9f00a8444fcfd321e91385e94f15
3d98af517d49b15dba615482257fd8a72f8810b0d4f18a47fce8bf06b3372fa9
43d225f01bf64527f716a45d052721613242eace99774e3ff5567839540047f8
a95c61dfc2636d3b7420f5f22216bc5cd579aebc88285f81b7f63eeae91c18d9
SH256 hash:
1379c1d640b61811e8fbdef70713e6d8e1e6ad6b6026831740fcd8c08ff07091
MD5 hash:
ba0f8c7639b19e031a03e3ebdef09a75
SHA1 hash:
e460abab72d17e89694cc609c47b251a6f545b71
Link:
https://www.unpac.me/results/4cb387d3-7e3c-4dea-ba04-9e4dd94ac834/
SH256 hash:
b56345d1e236c038796fbcff0960deb413fbbc79285ebb99365ff9ef28f4687e
MD5 hash:
c2ded5799694db68af7673705c3be4f3
SHA1 hash:
dff050a0d63c16b7a6efdafdcc0c2d61083fc3b0
Link:
https://www.unpac.me/results/4cb387d3-7e3c-4dea-ba04-9e4dd94ac834/
SH256 hash:
3d98af517d49b15dba615482257fd8a72f8810b0d4f18a47fce8bf06b3372fa9
MD5 hash:
b2b54e7746c487f283068b5175671d93
SHA1 hash:
20c35e295f12cb5e057b115eb8a2424dda1b77bd
Link:
https://www.unpac.me/results/4cb387d3-7e3c-4dea-ba04-9e4dd94ac834/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/3d98af517d49/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/3d98af517d49b15dba615482257fd8a72f8810b0d4f18a47fce8bf06b3372fa9

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
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
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 3d98af517d49b15dba615482257fd8a72f8810b0d4f18a47fce8bf06b3372fa9

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1887395/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/214366/

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