MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71ed38b5c950b506cced8e7d12d773bb1fa20daadf3570a98577054749caadfe. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments 1

SHA256 hash: 71ed38b5c950b506cced8e7d12d773bb1fa20daadf3570a98577054749caadfe
SHA3-384 hash: f2f747a490f324d2420138c830570bc4c4da9e0c6049f46a6fffdefe910b9bca9f7b6ad7c99c2a1c5608b890d20abd6b
SHA1 hash: 8e0e9f13fc6d43b72615b20d6031643f9b0da1f1
MD5 hash: f6e45b70f6d73f302610a1cb68763e48
humanhash: eight-three-cold-hydrogen
File name:f6e45b70f6d73f302610a1cb68763e48
Download: download sample
Signature Formbook
File size:572'416 bytes
First seen:2022-05-17 11:29:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'207 x SnakeKeylogger)
ssdeep 12288:hXZvNq/CacV0m/5mBFw8FwevOxAdqp/FYjDOI4Asga:h1cqanmKFwKwSOt/FYD4fga
Threatray 12'196 similar samples on MalwareBazaar
TLSH T139C41226F3B88837CEF806F8F5D01246A3BAD1223400F6D63FCA92A665D37D55981663
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 zbetcheckin
Tags:32 exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
204
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f6e45b70f6d73f302610a1cb68763e48
Verdict:
Malicious activity
Analysis date:
2022-05-18 00:17:10 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook obfuscated packed
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.
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
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)
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 628257 Sample: YXaYT4gWly Startdate: 17/05/2022 Architecture: WINDOWS Score: 100 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Multi AV Scanner detection for dropped file 2->45 47 8 other signatures 2->47 9 YXaYT4gWly.exe 7 2->9         started        process3 file4 33 C:\Users\user\AppData\RoamingEUFnGsR.exe, PE32 9->33 dropped 35 C:\Users\...EUFnGsR.exe:Zone.Identifier, ASCII 9->35 dropped 37 C:\Users\user\AppData\Local\...\tmpD32A.tmp, XML 9->37 dropped 39 C:\Users\user\AppData\...\YXaYT4gWly.exe.log, ASCII 9->39 dropped 49 Uses schtasks.exe or at.exe to add and modify task schedules 9->49 51 Adds a directory exclusion to Windows Defender 9->51 53 Tries to detect virtualization through RDTSC time measurements 9->53 55 Injects a PE file into a foreign processes 9->55 13 YXaYT4gWly.exe 9->13         started        16 powershell.exe 25 9->16         started        18 schtasks.exe 1 9->18         started        signatures5 process6 signatures7 63 Modifies the context of a thread in another process (thread injection) 13->63 65 Maps a DLL or memory area into another process 13->65 67 Queues an APC in another process (thread injection) 13->67 20 explorer.exe 13->20 injected 22 conhost.exe 16->22         started        24 conhost.exe 18->24         started        process8 process9 26 wlanext.exe 20->26         started        29 autofmt.exe 20->29         started        signatures10 57 Modifies the context of a thread in another process (thread injection) 26->57 59 Maps a DLL or memory area into another process 26->59 61 Tries to detect virtualization through RDTSC time measurements 26->61 31 explorer.exe 122 26->31         started        process11
Threat name:
ByteCode-MSIL.Trojan.Taskun
Status:
Malicious
First seen:
2022-05-17 09:11:59 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:xloader campaign:orte loader rat
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Xloader Payload
Xloader
Unpacked files
SH256 hash:
e50e674282161464bcbfda656dcc8a17621eba365793edbacc55475b303237fc
MD5 hash:
6f447ebaa68ad54118862f07c95a667d
SHA1 hash:
36a814d62ac70b151adee9ad07545b9fcb1c198d
SH256 hash:
9dad16966dee9ea746399a9a9adeebbb35796dd2b43a598559bb62753d4e2881
MD5 hash:
98a3eb23d2518afdcc4fdd0ee43c2a08
SHA1 hash:
4d34fb84eb297b971ad24f2c0d4a12df1eb1fa10
SH256 hash:
97527da0af9e8321eb6aa2c760bc3a6453341b0fef90c44595a02945c2dd3144
MD5 hash:
332f0164e6b19699174c491d839d6ec9
SHA1 hash:
eadeadeaf7bf3978d86d633bd054e4ff317ecc40
SH256 hash:
425290f5bab40f29549ad09434e1210df7c61ff5de2da3a65e2b43edc7a867b1
MD5 hash:
690c78ee26650a65dbc93d3fa23a59f3
SHA1 hash:
7f44b05190c723497c342424fa7872d534abc8ba
Detections:
win_formbook_g0 win_formbook_auto
SH256 hash:
71ed38b5c950b506cced8e7d12d773bb1fa20daadf3570a98577054749caadfe
MD5 hash:
f6e45b70f6d73f302610a1cb68763e48
SHA1 hash:
8e0e9f13fc6d43b72615b20d6031643f9b0da1f1
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.

Web download

Formbook

Executable exe 71ed38b5c950b506cced8e7d12d773bb1fa20daadf3570a98577054749caadfe

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2022-05-17 11:29:20 UTC

url : hxxp://109.248.150.175/winstream/csrss.exe