MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f5c46286398236732b22a56856c6df79c9f627a01f7c2a2017af4fe7ff0dd783. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f5c46286398236732b22a56856c6df79c9f627a01f7c2a2017af4fe7ff0dd783
SHA3-384 hash: ea23a988b5a389d51927624c1dcae7f846c2e874fb230183f197b366879f887ac74c126db2147dbda2b8feb918b55b3a
SHA1 hash: ed011fe185aa803175cc53b90b755536dfdd9fab
MD5 hash: 25638fc9da9f3f3c6888fa9348d37498
humanhash: comet-west-speaker-queen
File name:fde42VIkXMpAQg8.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:775'168 bytes
First seen:2022-03-01 12:29:38 UTC
Last seen:2022-03-01 15:11:09 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:aEnFR/I/kaB+gCDbeLDe9fd4F+Rr7vRc4Enh1+sTQ+fQoj4znG02vIBAO0u:bapucF+pRc4En/+sTFYoj4LKvI
Threatray 10'739 similar samples on MalwareBazaar
TLSH T159F4AE1838E65039F83A8BF1CBC0EBF1DB6EE261E48970F564000E555A55BBC8946EFD
Reporter malwarelabnet
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
259
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/245792/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.8930.13175.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a process with a hidden window
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/621e11d0dfdfa8501c71257e/reports/fd5759c4-c5e9-4d0c-a691-ec503db75fe4/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/15da080a-87d7-4a95-8cb4-41c0fb43519c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/948141
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
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
Self deletion via cmd delete
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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 580621 Sample: fde42VIkXMpAQg8.exe Startdate: 01/03/2022 Architecture: WINDOWS Score: 100 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 7 other signatures 2->43 9 fde42VIkXMpAQg8.exe 7 2->9         started        process3 file4 31 C:\Users\user\AppData\...\KaCIDiFNdJjx.exe, PE32 9->31 dropped 33 C:\Users\user\AppData\Local\...\tmp557B.tmp, XML 9->33 dropped 35 C:\Users\user\...\fde42VIkXMpAQg8.exe.log, ASCII 9->35 dropped 45 Uses schtasks.exe or at.exe to add and modify task schedules 9->45 47 Adds a directory exclusion to Windows Defender 9->47 49 Tries to detect virtualization through RDTSC time measurements 9->49 13 fde42VIkXMpAQg8.exe 9->13         started        16 powershell.exe 19 9->16         started        18 schtasks.exe 1 9->18         started        signatures5 process6 signatures7 55 Modifies the context of a thread in another process (thread injection) 13->55 57 Maps a DLL or memory area into another process 13->57 59 Sample uses process hollowing technique 13->59 61 Queues an APC in another process (thread injection) 13->61 20 explorer.exe 13->20 injected 22 conhost.exe 16->22         started        24 conhost.exe 18->24         started        process8 process9 26 chkdsk.exe 20->26         started        signatures10 51 Self deletion via cmd delete 26->51 53 Tries to detect virtualization through RDTSC time measurements 26->53 29 cmd.exe 26->29         started        process11
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f5c46286398236732b22a56856c6df79c9f627a01f7c2a2017af4fe7ff0dd783/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-01 12:30:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6xcgfbrzqi3hgkzcuvufnrw7phe7mj5ad56cuiaxv5h6p7yn26bq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
070264132f92fc5cb01521385e73bf36954d4093da205c59821e844abed68b5f
Formbook
28c28db28e96276f72ce38a60d04f0711388d3f93ecb34d4721dc94fc2bf9f07
Formbook
3554e8a6c968467f681a97f7d0af60e7be69d515ee9b093b8be749811ec99c0b
Formbook
388099a4f3b1d9a56fd023c78c3130aa212632f04d6ba6399daa5ee9a5d398a1
Formbook
4e1397fff753fe86be50e152d3e2ace6a8a9e0b3f8e63e77c0e0c1c1d6ed71c3
Formbook
60b97b4d45e3850d57a661bf37987909c1f99096384123594cc1b79d5449348f
Formbook
9e41bc1734c4bc894acdc9c08568cb2f1cd01078fa9b5f30d6f18c6383c22863
Formbook
a4e51503957292fe946f001fdcaf2b6ac7cd935c7bca80d5f79754c14d93e03d
Formbook
f725b6a2466a6f4c7084eeab5994e30b8ef836633c1a84d85c1899deb1808d3c
Formbook
+ 10'729 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:wcur loader rat
Link:
https://tria.ge/reports/220301-ppg11aaag8/
Behaviour
Creates scheduled task(s)
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
Deletes itself
Xloader Payload
Xloader
Unpacked files
SH256 hash:
a71e04393c332037ef9f5c99866d5b2cd4e2524fb2be999b4757f3a28c7d8a89
MD5 hash:
d3cd86eecdec2b5722775cba6e026644
SHA1 hash:
043539a3ee218e06b8b9b04c3c9c94a4d8e22798
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/acf197ba-4a1a-4e40-9c28-a65b0e475412/
Parent samples :
3554e8a6c968467f681a97f7d0af60e7be69d515ee9b093b8be749811ec99c0b
388099a4f3b1d9a56fd023c78c3130aa212632f04d6ba6399daa5ee9a5d398a1
1da98c2ee11e4f3adcb1cc4486f4e74c50b925442896a29890c3b525a186f7c4
f5c46286398236732b22a56856c6df79c9f627a01f7c2a2017af4fe7ff0dd783
20c6e04ec0f495415cbe40623958124996eb2edbae3c3ff295a979d41de888b3
06c8c127ef48c4409df79aa16dda350b4c9a098677f9e9d95bceb9538f32f8db
SH256 hash:
909762c1a08e80bd37e79018ee6f41e34818ee2b03a8f338b21d71261f389cd9
MD5 hash:
399dbbe130cdf4e9c2ddc3c69e874f08
SHA1 hash:
a3cfdf57726a62e864f013edce8727facac3cfdc
Link:
https://www.unpac.me/results/acf197ba-4a1a-4e40-9c28-a65b0e475412/
SH256 hash:
e3bdaf9e98eb65a070cf4424bc123e57ade151c41e4a0d375e769749155c1715
MD5 hash:
78a25e75b94923e889ecd100349facbe
SHA1 hash:
6b3f8db525d3c98f92ed480e664ab8ee9458340b
Link:
https://www.unpac.me/results/acf197ba-4a1a-4e40-9c28-a65b0e475412/
SH256 hash:
bcbc031164a46843bce68c90b4836b00b2d6ba9f8064d53fcbb3855d0979451b
MD5 hash:
9a5bbe6d2b2b10392e03e0a901eeb05f
SHA1 hash:
3d5518d490761a1626ed0f9608e4232975e6a421
Link:
https://www.unpac.me/results/acf197ba-4a1a-4e40-9c28-a65b0e475412/
SH256 hash:
f5c46286398236732b22a56856c6df79c9f627a01f7c2a2017af4fe7ff0dd783
MD5 hash:
25638fc9da9f3f3c6888fa9348d37498
SHA1 hash:
ed011fe185aa803175cc53b90b755536dfdd9fab
Link:
https://www.unpac.me/results/acf197ba-4a1a-4e40-9c28-a65b0e475412/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/f5c462863982/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/f5c46286398236732b22a56856c6df79c9f627a01f7c2a2017af4fe7ff0dd783

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
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/245792/

Comments