MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 54cfa1f93d985c0bf952e00247f781f36988dffec0cb8d83f79fa3e41d98b335. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments

SHA256 hash: 54cfa1f93d985c0bf952e00247f781f36988dffec0cb8d83f79fa3e41d98b335
SHA3-384 hash: 9e8ed5e74d3da0e20fab2c4ce04b01c7f9335fc592a6e7449b2851fec7d0104d8576249c2f69d22a2951399605da2af2
SHA1 hash: 5e3a42cfcd133343ee81cc1bdfdf9fe86e1a7065
MD5 hash: 4049ea10c061ecd53c69f0c0a2afe683
humanhash: delaware-minnesota-sierra-connecticut
File name:NOVO PEDIDO DE COMPRA.exe
Download: download sample
Signature Formbook
File size:759'296 bytes
First seen:2022-02-15 12:03:40 UTC
Last seen:2022-02-15 13:52:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:KGbFd7QRfr88/k2YumaAM+tJDpsP2UPGmN7lYCDhHvU6imYcVTG71hrwJ2DJ5k+:XzQVr88ikfidfUPGmBZvi8uWANa
Threatray 13'662 similar samples on MalwareBazaar
TLSH T157F40116B327A6AFC53402F8887282C64BF0B29E14A6E7FE5FE231D452C1BE5457417B
File icon (PE):PE icon
dhash icon 0012360d4d1e8606 (19 x AgentTesla, 12 x Formbook, 4 x SnakeKeylogger)
Reporter lowmal3
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
3
# of downloads :
213
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Creating a file
Launching cmd.exe command interpreter
Forced shutdown of a system process
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
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
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 domain / URL
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
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
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:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 572529 Sample: NOVO PEDIDO DE COMPRA.exe Startdate: 15/02/2022 Architecture: WINDOWS Score: 100 42 Multi AV Scanner detection for domain / URL 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 13 other signatures 2->48 10 NOVO PEDIDO DE COMPRA.exe 7 2->10         started        process3 file4 36 C:\Users\user\AppData\Roaming\FkPVSF.exe, PE32 10->36 dropped 38 C:\Users\user\AppData\Local\...\tmpA257.tmp, XML 10->38 dropped 40 C:\Users\...40OVO PEDIDO DE COMPRA.exe.log, ASCII 10->40 dropped 50 Writes to foreign memory regions 10->50 52 Adds a directory exclusion to Windows Defender 10->52 54 Injects a PE file into a foreign processes 10->54 14 RegSvcs.exe 10->14         started        17 powershell.exe 25 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 62 Modifies the context of a thread in another process (thread injection) 14->62 64 Maps a DLL or memory area into another process 14->64 66 Sample uses process hollowing technique 14->66 68 2 other signatures 14->68 21 explorer.exe 14->21 injected 23 conhost.exe 17->23         started        25 conhost.exe 19->25         started        process8 process9 27 cmd.exe 21->27         started        signatures10 56 Modifies the context of a thread in another process (thread injection) 27->56 58 Maps a DLL or memory area into another process 27->58 60 Tries to detect virtualization through RDTSC time measurements 27->60 30 cmd.exe 1 27->30         started        32 explorer.exe 109 27->32         started        process11 process12 34 conhost.exe 30->34         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-02-15 12:04:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  4/10
Tags:
n/a
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Drops file in Windows directory
Unpacked files
SH256 hash:
55387d8366303a794ee0f3d71a04617f0f1ee9c67a55c913f9b6b870efa123b8
MD5 hash:
c7a79737aa6d4fadfac3b251d48773c4
SHA1 hash:
1afbe9593ed76bd2edb0e0dba4512eb3c8d43fb3
Detections:
win_formbook_g0 win_formbook_auto
SH256 hash:
63b6403c6ea1378c0ff49f069597b45496dba6c0161d240e64885ab6f0806d04
MD5 hash:
72b143fd989c37772556bf302ac33be1
SHA1 hash:
ee377db4778e70261d34f8210208069df41a12ef
SH256 hash:
87989f712f0e53dd010b16faff945ac05f0c6619630020307cb33fe420c0c0c1
MD5 hash:
88538beb5abc20b57f81c7729c2693bf
SHA1 hash:
d49a90bb1ac2b979cc358c849cdc88017d24e4f8
SH256 hash:
07bc3d87dea8f5b3198bf9fe83fd12d306d9a924a8f35b4cfb1a820e26df94ad
MD5 hash:
a09dde3fe9456b9b74f88a41f2c286c5
SHA1 hash:
25047f7c2029052f9544fad7b9454a8b0c7246d3
SH256 hash:
54cfa1f93d985c0bf952e00247f781f36988dffec0cb8d83f79fa3e41d98b335
MD5 hash:
4049ea10c061ecd53c69f0c0a2afe683
SHA1 hash:
5e3a42cfcd133343ee81cc1bdfdf9fe86e1a7065
Malware family:
FormBook
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Rule name:Skystars_Malware_Imphash
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 54cfa1f93d985c0bf952e00247f781f36988dffec0cb8d83f79fa3e41d98b335

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments