MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c21fb3b78e63dc303da89cce5458e70d8e991529c0c15d3170b079182af7e529. 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
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SHA256 hash: c21fb3b78e63dc303da89cce5458e70d8e991529c0c15d3170b079182af7e529
SHA3-384 hash: 76a2ea1545de7ea362e756a1b5ce9219b602df285da3813722d85c4c598819eb4a3af4f92c7b601d416d6500b86b5e40
SHA1 hash: 9bfa4f38391bd6b9d923fe74565789678da1cf7f
MD5 hash: faf1dc7ff9556c2ed08eed242b86198a
humanhash: table-carolina-fish-pizza
File name:RFQ 300622.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:596'992 bytes
First seen:2022-06-30 08:36:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:Vun9sL2iNOevD/rQsIrQAh+FoHZn4OzySa:Vung13vD/3JAh7Zn4Ozy
TLSH T1BDC4D080B363BF36F13AA3B7B941808827B0646D95E2D6298E9DB5DE25747110CF4F63
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 Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
250
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/284542/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62bd60af1756f979fbcbd2c0/reports/f224f6a9-d24c-4b62-8df8-9bc7fb73da13/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/f1f328e5-df09-4267-9402-fe8564b5d64b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1022473
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
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
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
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 654970 Sample: RFQ 300622.exe Startdate: 30/06/2022 Architecture: WINDOWS Score: 100 39 www.camblnvest.com 2->39 41 www.swflfarmrescue.com 2->41 49 Snort IDS alert for network traffic 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus detection for URL or domain 2->53 55 13 other signatures 2->55 9 RFQ 300622.exe 7 2->9         started        signatures3 process4 file5 31 C:\Users\user\AppData\...\OaGSGVXkQJYSy.exe, PE32 9->31 dropped 33 C:\...\OaGSGVXkQJYSy.exe:Zone.Identifier, ASCII 9->33 dropped 35 C:\Users\user\AppData\Local\Temp\tmp7CA.tmp, XML 9->35 dropped 37 C:\Users\user\AppData\...\RFQ 300622.exe.log, ASCII 9->37 dropped 61 Adds a directory exclusion to Windows Defender 9->61 13 RFQ 300622.exe 9->13         started        16 powershell.exe 25 9->16         started        18 schtasks.exe 1 9->18         started        signatures6 process7 signatures8 69 Modifies the context of a thread in another process (thread injection) 13->69 71 Maps a DLL or memory area into another process 13->71 73 Sample uses process hollowing technique 13->73 75 Queues an APC in another process (thread injection) 13->75 20 explorer.exe 13->20 injected 24 conhost.exe 16->24         started        26 conhost.exe 18->26         started        process9 dnsIp10 43 www.mysupport.space 64.190.63.111, 49858, 80 NBS11696US United States 20->43 45 www.ntyake.com 173.82.210.38, 49817, 80 MULTA-ASN1US United States 20->45 47 7 other IPs or domains 20->47 57 System process connects to network (likely due to code injection or exploit) 20->57 59 Performs DNS queries to domains with low reputation 20->59 28 cmstp.exe 20->28         started        signatures11 process12 signatures13 63 Modifies the context of a thread in another process (thread injection) 28->63 65 Maps a DLL or memory area into another process 28->65 67 Tries to detect virtualization through RDTSC time measurements 28->67
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c21fb3b78e63dc303da89cce5458e70d8e991529c0c15d3170b079182af7e529/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-06-30 08:18:37 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yip3hn4ompodapnitthfiwhhbwhjsfjjydav2mlqwb4rqkxx4uuq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:8var loader rat spyware stealer suricata
Link:
https://tria.ge/reports/220630-kh5q9sbec8/
Behaviour
Creates scheduled task(s)
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Blocklisted process makes network request
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
1cd66b408a071c6a0809981704b0a1f0a3edff8c76fce9b23459f8f0024adf74
MD5 hash:
80be3980a166c89c4ee328498685713a
SHA1 hash:
09f91859794601838f32922f0b418ff70acdba78
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0c08359e-7bb4-4ba6-b729-e1726f64f40e/
Parent samples :
c21fb3b78e63dc303da89cce5458e70d8e991529c0c15d3170b079182af7e529
32e1ca421ebb3d724b26bbeca54ff377e6396358226cfeda960142f7d9a7bfbe
ea02c085fc4e149d308e42db8016b695d8751ab9a681a7091402fe9b8c877cb1
08b878fd0b50fe201a07c27a3769d2461dcd2d2f2e80154cea90f3734438db00
66e44f77663e1e6b2d7e755b99ff201964467d2ac490df273169d1ec02135776
SH256 hash:
0cb6aef1fa57d11408e47ae071485ef8f48c2982997b8d74b47a4151d85b978c
MD5 hash:
843aa6edf83bff7b61c6a5369ef41e95
SHA1 hash:
d1bfeec8eaac9a1dacf2f7062ce964d8e7d77085
Link:
https://www.unpac.me/results/0c08359e-7bb4-4ba6-b729-e1726f64f40e/
SH256 hash:
16b9fc4700292684bae0ef2da4a4f4b393103771e93c0b48747df8a24af40d59
MD5 hash:
12ae0e4078e6e9da25181468d72b7ef4
SHA1 hash:
3f88feb096debc12d2f72bac4dfe7e799c7bbf36
Link:
https://www.unpac.me/results/0c08359e-7bb4-4ba6-b729-e1726f64f40e/
SH256 hash:
5f8f475096f5be30a1b6d494da6a078ae41c7310e4379bf9db3b844c3d45b6fd
MD5 hash:
d85f62decc54daec985f537e9c2dcf31
SHA1 hash:
04bb589817bb15a12f142c9f9dcec6e09e60759d
Link:
https://www.unpac.me/results/0c08359e-7bb4-4ba6-b729-e1726f64f40e/
SH256 hash:
88e5673c80d635965edf5a69fce6c4eb8b5540a1a058516835ea750aecba3fce
MD5 hash:
38d69b4463ee833790741f3fdbbae44c
SHA1 hash:
015b99725857a240230a6c5d4d41584d3fc17907
Link:
https://www.unpac.me/results/0c08359e-7bb4-4ba6-b729-e1726f64f40e/
SH256 hash:
c21fb3b78e63dc303da89cce5458e70d8e991529c0c15d3170b079182af7e529
MD5 hash:
faf1dc7ff9556c2ed08eed242b86198a
SHA1 hash:
9bfa4f38391bd6b9d923fe74565789678da1cf7f
Link:
https://www.unpac.me/results/0c08359e-7bb4-4ba6-b729-e1726f64f40e/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c21fb3b78e63/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/c21fb3b78e63dc303da89cce5458e70d8e991529c0c15d3170b079182af7e529

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/284542/

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