MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b65471a885ff0bfdeea257dfc390024347f4cda281c48c3454cb2c17508e27a4. 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 2 File information Comments
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SHA256 hash: b65471a885ff0bfdeea257dfc390024347f4cda281c48c3454cb2c17508e27a4
SHA3-384 hash: 11b8100aea4c70054bbae998bbdbe6a14871249f603dbf0cf921fbfb8f3077e15581e4502448c3defb8cee7f17c502dd
SHA1 hash: 2637d0410747d9db36309dc28037ef76ef051d1e
MD5 hash: a7d14f13f393e8afe32b2d4a6d4fc253
humanhash: quiet-summer-carolina-wolfram
File name:tbwfNCGmjcai1ay.exe
Download: download sample
Signature Formbook
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File size:610'816 bytes
First seen:2022-05-09 14:24:00 UTC
Last seen:2022-05-09 14:54:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:Q+9l2L2I+qo2PF1fstmQVzwpa3KrERLhkhk+yugqKwc3H0jStsWXj:lH2q8SnMuOERLhedgqKW4
TLSH T1ABD4121A77D2A767D67157F16284834003F37E6D7062FB8E5E8325EF6AA2F090601B63
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter cocaman
Tags:DHL exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
220
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
tbwfNCGmjcai1ay.exe
Verdict:
Malicious activity
Analysis date:
2022-05-09 18:20:04 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/331b852e-3e28-435e-a5e1-bc6c26e97d4e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Siggen17.49659.13829.25736.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/62792417d4bfd83491c3b4c8/reports/fedb7622-f5bd-40d5-9e8e-cda114a392ff/overview
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/e369724b-5af9-46d1-9325-12ac3d96bcd3
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/990242
Signature
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 622742 Sample: tbwfNCGmjcai1ay.exe Startdate: 09/05/2022 Architecture: WINDOWS Score: 100 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus detection for URL or domain 2->52 54 8 other signatures 2->54 10 tbwfNCGmjcai1ay.exe 7 2->10         started        process3 file4 40 C:\Users\user\AppData\Roaming\HJbTEfIx.exe, PE32 10->40 dropped 42 C:\Users\...\HJbTEfIx.exe:Zone.Identifier, ASCII 10->42 dropped 44 C:\Users\user\AppData\Local\Temp\tmpF2F.tmp, XML 10->44 dropped 46 C:\Users\user\...\tbwfNCGmjcai1ay.exe.log, ASCII 10->46 dropped 56 Uses schtasks.exe or at.exe to add and modify task schedules 10->56 58 Writes to foreign memory regions 10->58 60 Adds a directory exclusion to Windows Defender 10->60 62 Injects a PE file into a foreign processes 10->62 14 RegSvcs.exe 10->14         started        17 RegSvcs.exe 10->17         started        19 powershell.exe 25 10->19         started        21 schtasks.exe 1 10->21         started        signatures5 process6 signatures7 70 Modifies the context of a thread in another process (thread injection) 14->70 72 Maps a DLL or memory area into another process 14->72 74 Sample uses process hollowing technique 14->74 76 Queues an APC in another process (thread injection) 14->76 23 explorer.exe 14->23 injected 78 Tries to detect virtualization through RDTSC time measurements 17->78 25 conhost.exe 19->25         started        27 conhost.exe 21->27         started        process8 process9 29 help.exe 23->29         started        32 autoconv.exe 23->32         started        signatures10 64 Modifies the context of a thread in another process (thread injection) 29->64 66 Maps a DLL or memory area into another process 29->66 68 Tries to detect virtualization through RDTSC time measurements 29->68 34 cmd.exe 1 29->34         started        36 explorer.exe 124 29->36         started        process11 process12 38 conhost.exe 34->38         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/b65471a885ff0bfdeea257dfc390024347f4cda281c48c3454cb2c17508e27a4/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-05-09 08:20:30 UTC
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wzkhdkef74f733vck7p4heacind7jtncqhciyncuzmwboueoe6sa._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:zh4o loader rat suricata
Link:
https://tria.ge/reports/220509-rqphksgdcq/
Behaviour
Creates scheduled task(s)
Gathers network information
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
155aaa60c162063f4448ea41f0cfe148bae6707c7171022b26a9d25ced103e67
MD5 hash:
40728090bfe2dbaf8b632f345953f2b7
SHA1 hash:
bbee9c875916b06c045f9651444ccbad39709c63
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/f5efc257-6bff-478d-a780-b2b56979577f/
Parent samples :
b65471a885ff0bfdeea257dfc390024347f4cda281c48c3454cb2c17508e27a4
de71af66a8c1bb33f1d3302d504cbd585b8ccff68d7fb3ae4cca382454b716f3
SH256 hash:
6a4c1e461cb70549a4f7c77992a4664ec3dcc12fd1e81b6f9613c7ca0f0caf6a
MD5 hash:
b0a3e377fd49e2190f074f8563725477
SHA1 hash:
61ea8601b9591fab4a2dd846069d863c3c5f037a
Link:
https://www.unpac.me/results/f5efc257-6bff-478d-a780-b2b56979577f/
SH256 hash:
044e6e22943ac21887eaef4daf70bc43b8d7b54b7160ecc2e0b6ff77a6832a99
MD5 hash:
0512fe61b5e75a5aa25f0c17882292cd
SHA1 hash:
3b05ecfbb15a15fd46a9d9b588620454b6361745
Link:
https://www.unpac.me/results/f5efc257-6bff-478d-a780-b2b56979577f/
SH256 hash:
387f67adf6f5ac6f224377c00b4b1c86fbcbe39733f1d31aa4e5102dafd84af2
MD5 hash:
ea5f4183769d1f77d79d1dec49981066
SHA1 hash:
0eb162306759467817e0ed284eea99b3132ad70d
Link:
https://www.unpac.me/results/f5efc257-6bff-478d-a780-b2b56979577f/
SH256 hash:
b65471a885ff0bfdeea257dfc390024347f4cda281c48c3454cb2c17508e27a4
MD5 hash:
a7d14f13f393e8afe32b2d4a6d4fc253
SHA1 hash:
2637d0410747d9db36309dc28037ef76ef051d1e
Link:
https://www.unpac.me/results/f5efc257-6bff-478d-a780-b2b56979577f/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b65471a885ff/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b65471a885ff0bfdeea257dfc390024347f4cda281c48c3454cb2c17508e27a4

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.

Malspam

Formbook

rar 0b4ad9a30e1a3b938aa04ed4deff9c24074414d06afa217d92a20e18c4335d68

Formbook

Executable exe b65471a885ff0bfdeea257dfc390024347f4cda281c48c3454cb2c17508e27a4

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 0b4ad9a30e1a3b938aa04ed4deff9c24074414d06afa217d92a20e18c4335d68
  
Dropped by
MD5 6b77b1a2a79d82448e4dd25922c2e45a

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