MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac4f54c754e6522cc5d4348a6c138718700ec82097225cae5b46a1eeffdfd094. 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 6 File information Comments
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SHA256 hash: ac4f54c754e6522cc5d4348a6c138718700ec82097225cae5b46a1eeffdfd094
SHA3-384 hash: e8d8373a48b87df804b24e49707f9ec598203dfe26f2f18669c1914f5ebbe3619d309a2e74d4de5c3f2dea168881a51d
SHA1 hash: c71724de45d4f75d19fbb7e5f6567d05eabd60db
MD5 hash: 1b3a8814b9f39a427c75119176e730a7
humanhash: romeo-freddie-speaker-early
File name:Payment Advice.exe
Download: download sample
Signature Formbook
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File size:42'496 bytes
First seen:2022-04-06 06:00:46 UTC
Last seen:2022-04-06 11:12:57 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 384:4HmJYguTiBQeaeTblJEqAQEulai+MwCKPEH2S3dd0hUADkak2CR:4GJY7TWTbC8lsMwCK63deVDS9
TLSH T1A013E6567891661EC5D47BF86DB1A29366357CE10124C18FACF97F2AE933213CCC226D
File icon (PE):PE icon
dhash icon 174f4559191b1b13 (81 x AgentTesla, 68 x Formbook, 34 x SnakeKeylogger)
Reporter cocaman
Tags:exe FormBook payment

Intelligence

File Origin
# of uploads :
3
# of downloads :
311
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/261162/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
DNS request
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/624d2c9fdb9ca5cf842ad9a4/reports/81cf41c0-f380-4b9f-8962-c79db7f8a93b/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/eef7e736-9a53-4dab-86dd-b6e05b77dbba
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/971317
Signature
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Initial sample is a PE file and has a suspicious name
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 ping.exe to check the status of other devices and networks
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 603804 Sample: Payment Advice.exe Startdate: 06/04/2022 Architecture: WINDOWS Score: 100 96 Found malware configuration 2->96 98 Malicious sample detected (through community Yara rule) 2->98 100 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->100 102 8 other signatures 2->102 10 Payment Advice.exe 16 7 2->10         started        process3 dnsIp4 94 cdn.discordapp.com 162.159.134.233, 443, 49757, 49778 CLOUDFLARENETUS United States 10->94 74 C:\Users\user\AppData\...\Wupgwrtmn.exe, PE32 10->74 dropped 76 C:\Users\...\Wupgwrtmn.exe:Zone.Identifier, ASCII 10->76 dropped 78 C:\Users\user\...\Payment Advice.exe.log, ASCII 10->78 dropped 110 Writes to foreign memory regions 10->110 112 Injects a PE file into a foreign processes 10->112 15 MSBuild.exe 10->15         started        18 cmd.exe 1 10->18         started        20 cmd.exe 1 10->20         started        file5 signatures6 process7 signatures8 114 Modifies the context of a thread in another process (thread injection) 15->114 116 Maps a DLL or memory area into another process 15->116 118 Sample uses process hollowing technique 15->118 122 2 other signatures 15->122 22 explorer.exe 15->22 injected 120 Uses ping.exe to check the status of other devices and networks 18->120 25 PING.EXE 1 18->25         started        27 conhost.exe 18->27         started        29 timeout.exe 1 18->29         started        31 conhost.exe 20->31         started        33 timeout.exe 1 20->33         started        process9 dnsIp10 86 192.168.2.1 unknown unknown 22->86 35 Wupgwrtmn.exe 14 3 22->35         started        39 cscript.exe 22->39         started        41 Wupgwrtmn.exe 3 22->41         started        88 google.com 142.250.185.206 GOOGLEUS United States 25->88 process11 dnsIp12 80 162.159.135.233, 443, 49777 CLOUDFLARENETUS United States 35->80 82 cdn.discordapp.com 35->82 104 Multi AV Scanner detection for dropped file 35->104 106 Machine Learning detection for dropped file 35->106 43 cmd.exe 1 35->43         started        45 cmd.exe 35->45         started        47 MSBuild.exe 35->47         started        108 Tries to detect virtualization through RDTSC time measurements 39->108 49 cmd.exe 39->49         started        84 cdn.discordapp.com 41->84 51 cmd.exe 41->51         started        53 cmd.exe 41->53         started        signatures13 process14 process15 55 PING.EXE 43->55         started        58 conhost.exe 43->58         started        60 timeout.exe 1 43->60         started        70 2 other processes 45->70 62 conhost.exe 49->62         started        64 PING.EXE 51->64         started        66 conhost.exe 51->66         started        68 timeout.exe 51->68         started        72 2 other processes 53->72 dnsIp16 90 google.com 55->90 92 google.com 64->92
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ac4f54c754e6522cc5d4348a6c138718700ec82097225cae5b46a1eeffdfd094/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-04-06 06:01:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vrhvjr2u4zjczrougsfgye4hdbya5sbas4rfzls3i2q657672cka._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:e0i2 persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/220406-gqwa1sbae5/
Behaviour
Delays execution with timeout.exe
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Formbook Payload
Formbook
Unpacked files
SH256 hash:
ac4f54c754e6522cc5d4348a6c138718700ec82097225cae5b46a1eeffdfd094
MD5 hash:
1b3a8814b9f39a427c75119176e730a7
SHA1 hash:
c71724de45d4f75d19fbb7e5f6567d05eabd60db
Link:
https://www.unpac.me/results/570cf82d-001e-457c-b067-ab1ad5a65588/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/ac4f54c754e6/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ac4f54c754e6522cc5d4348a6c138718700ec82097225cae5b46a1eeffdfd094

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:INDICATOR_EXE_Packed_SmartAssembly
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Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:INDICATOR_SUSPICIOUS_EXE_DiscordURL
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Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Discord_Attachments_URL
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Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research

File information

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

Malspam

Formbook

zip 982efc08cb3e2e3399399fef40665e301f28e6d44ff052a4bba8fba7df679090

Formbook

Executable exe ac4f54c754e6522cc5d4348a6c138718700ec82097225cae5b46a1eeffdfd094

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 982efc08cb3e2e3399399fef40665e301f28e6d44ff052a4bba8fba7df679090
Cape
Cape
https://www.capesandbox.com/analysis/261162/

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