MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 46f123a905b23a735026affa61d3ab4cc7b9bf03e8881e8a1691e3d04a834bf0. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
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SHA256 hash: 46f123a905b23a735026affa61d3ab4cc7b9bf03e8881e8a1691e3d04a834bf0
SHA3-384 hash: 3c357fb6d7d6d8bbe957e79558435d22b7626c26c4fe91f99adb34ac32cd5e6983b6c329f93f42eed5ee009f23a7ae8f
SHA1 hash: 5206dbd7db2c8b211ea64e21719724b755104b19
MD5 hash: 62329af1aafd3ac64310c9de6e80dab5
humanhash: seventeen-lamp-early-single
File name:Rev NX028362 Contract Tender.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:964'096 bytes
First seen:2022-10-17 06:49:02 UTC
Last seen:2022-10-17 12:28:16 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:sosoa3LGC12oaSIKPuJdUQfY+xhU82SuFBErCrNQqTknLpPKIKBAtv6cxR:s0oRIKfgY4hxhqgnL9HvJ
TLSH T12725AD1ACE884D81DD00B374A1F1E73C85A19F9AB13F9749E9B57998E632FDD2012C4E
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)
File icon (PE):PE icon
dhash icon 9f197f3767531b47 (39 x Formbook, 12 x AgentTesla, 2 x RemcosRAT)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
229
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
formbook2.zip
Verdict:
No threats detected
Analysis date:
2022-10-17 08:55:27 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1130ec39-0599-45f5-9a7f-9fad9006e6cc

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/320779/
Detection(s):
SecuriteInfo.com.Trojan.PWS.StealerNET.122.3332.28520.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Creating a window
Running batch commands
Launching a process
Creating a file
Creating a file in the %AppData% directory
Creating a process from a recently created file
Enabling autorun
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/634cfb1bc99b342ba010bd18/reports/7a781c2d-4880-4690-95bc-76378cea772a/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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/d28a5abd-6f4a-4687-9c8c-525b936cc994
Result
Threat name:
DarkTortilla, FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1091561
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains very large array initializations
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect virtualization through RDTSC time measurements
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Yara detected DarkTortilla Crypter
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 724181 Sample: Rev NX028362 Contract Tender.exe Startdate: 17/10/2022 Architecture: WINDOWS Score: 100 64 Malicious sample detected (through community Yara rule) 2->64 66 Multi AV Scanner detection for submitted file 2->66 68 Yara detected DarkTortilla Crypter 2->68 70 5 other signatures 2->70 9 Rev NX028362 Contract Tender.exe 15 3 2->9         started        process3 dnsIp4 62 www.google.com 142.250.203.100, 443, 49706, 49707 GOOGLEUS United States 9->62 52 C:\...\Rev NX028362 Contract Tender.exe.log, ASCII 9->52 dropped 90 Hides that the sample has been downloaded from the Internet (zone.identifier) 9->90 14 cmd.exe 3 9->14         started        18 cmd.exe 1 9->18         started        file5 signatures6 process7 file8 54 C:\Users\user\AppData\Roaming\basnero.exe, PE32 14->54 dropped 56 C:\Users\user\...\basnero.exe:Zone.Identifier, ASCII 14->56 dropped 92 Uses ping.exe to sleep 14->92 20 basnero.exe 14 5 14->20         started        25 conhost.exe 14->25         started        27 PING.EXE 1 14->27         started        29 PING.EXE 1 14->29         started        94 Uses ping.exe to check the status of other devices and networks 18->94 31 reg.exe 1 1 18->31         started        33 PING.EXE 1 18->33         started        35 conhost.exe 18->35         started        signatures9 process10 dnsIp11 58 www.google.com 20->58 50 C:\Users\user\AppData\Local\...\basnLOP.exe, PE32 20->50 dropped 80 Multi AV Scanner detection for dropped file 20->80 82 Machine Learning detection for dropped file 20->82 84 Tries to detect virtualization through RDTSC time measurements 20->84 88 2 other signatures 20->88 37 basnLOP.exe 2 20->37         started        40 basnero.exe 20->40         started        42 basnLOP.exe 20->42         started        86 Creates an undocumented autostart registry key 31->86 60 127.0.0.1 unknown unknown 33->60 file12 signatures13 process14 signatures15 72 Antivirus detection for dropped file 37->72 74 Multi AV Scanner detection for dropped file 37->74 76 Machine Learning detection for dropped file 37->76 44 basnLOP.exe 37->44         started        78 Maps a DLL or memory area into another process 40->78 46 explorer.exe 40->46 injected 48 basnLOP.exe 42->48         started        process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/46f123a905b23a735026affa61d3ab4cc7b9bf03e8881e8a1691e3d04a834bf0/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-10-17 00:48:52 UTC
File Type:
PE (.Net Exe)
Extracted files:
26
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=i3yshkifwi5hgubgv75gdu5ljtd3tpyd5ceb5cqwshr5asudjpya._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:s11n persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/221017-hlb71sahe6/
Behaviour
Gathers network information
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Formbook payload
Formbook
Modifies WinLogon for persistence
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/3becdd59-ab18-482c-8362-02f6bc8599fd
Unpacked files
SH256 hash:
46f123a905b23a735026affa61d3ab4cc7b9bf03e8881e8a1691e3d04a834bf0
MD5 hash:
62329af1aafd3ac64310c9de6e80dab5
SHA1 hash:
5206dbd7db2c8b211ea64e21719724b755104b19
Link:
https://www.unpac.me/results/20d68b5a-0f96-4a94-b541-3c932d0609a9/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/46f123a905b2/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/46f123a905b23a735026affa61d3ab4cc7b9bf03e8881e8a1691e3d04a834bf0

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
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.

Malspam

Formbook

Executable exe 46f123a905b23a735026affa61d3ab4cc7b9bf03e8881e8a1691e3d04a834bf0

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/320779/

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