MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51bdc77ea1cd3a98d039606829ae04693bc9672c976f89eb0a1f027cf7170a8f. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
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SHA256 hash: 51bdc77ea1cd3a98d039606829ae04693bc9672c976f89eb0a1f027cf7170a8f
SHA3-384 hash: 06e1fca5bc911d7f511c3d2f0ca793ba900ede796e4210c6ba1bfc788ece0a8165b418be7104a7ae5cb82348a32869ff
SHA1 hash: ecc1ff1729a29c90983900657e204af9b3a571b8
MD5 hash: beab74622141133f4494e5a327fe7c60
humanhash: nine-asparagus-cat-autumn
File name:CTM ARRANGMENT.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:274'653 bytes
First seen:2022-05-23 05:52:54 UTC
Last seen:2022-05-23 06:41:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 55f3dfd13c0557d3e32bcbc604441dd3 (124 x Formbook, 18 x Loki, 13 x AgentTesla)
ssdeep 6144:B0Y7sltLbhAKG/UjJEATYRzFWdcC7nRnBET9cMK8Ic0nsbyGF:wjhAByE4VGCLE9cMK/nsb
TLSH T1CD44132FA1F241BBCDB2793056EB9675D1FFC02414312697E7056E9AFD060C2865E2E3
TrID 92.9% (.EXE) NSIS - Nullsoft Scriptable Install System (846567/2/133)
3.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
1.1% (.EXE) Win64 Executable (generic) (10523/12/4)
0.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
0.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
265
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
CTM ARRANGMENT.exe
Verdict:
Malicious activity
Analysis date:
2022-05-23 05:53:37 UTC
Tags:
installer formbook trojan stealer
Link:
https://app.any.run/tasks/944241e6-52a9-4d39-92f0-1ae61fa84044

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/273513/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll wacatac
Link:
https://www.filescan.io/uploads/628b213f370bb1455cbfd47a/reports/c830e340-1a24-496e-b279-3e801d7e07df/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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5d804c4c-91df-4e02-9615-920881262372
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/999512
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Machine Learning detection for dropped file
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 632004 Sample: CTM ARRANGMENT.exe Startdate: 23/05/2022 Architecture: WINDOWS Score: 100 45 Multi AV Scanner detection for domain / URL 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 5 other signatures 2->51 11 CTM ARRANGMENT.exe 19 2->11         started        process3 file4 31 C:\Users\user\AppData\Local\...\dpizmbey.exe, PE32 11->31 dropped 14 dpizmbey.exe 11->14         started        process5 signatures6 61 Multi AV Scanner detection for dropped file 14->61 63 Machine Learning detection for dropped file 14->63 65 Tries to detect virtualization through RDTSC time measurements 14->65 17 dpizmbey.exe 14->17         started        process7 signatures8 37 Modifies the context of a thread in another process (thread injection) 17->37 39 Maps a DLL or memory area into another process 17->39 41 Sample uses process hollowing technique 17->41 43 Queues an APC in another process (thread injection) 17->43 20 explorer.exe 17->20 injected process9 dnsIp10 33 www.canadianinntexas.com 199.34.228.191, 49758, 80 WEEBLYUS United States 20->33 35 www.longcoin.space 20->35 53 System process connects to network (likely due to code injection or exploit) 20->53 24 systray.exe 20->24         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 24->55 57 Maps a DLL or memory area into another process 24->57 59 Tries to detect virtualization through RDTSC time measurements 24->59 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/51bdc77ea1cd3a98d039606829ae04693bc9672c976f89eb0a1f027cf7170a8f/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-23 00:41:58 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
20 of 41 (48.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kg64o7vbzu5jrubzmbuctlqene54szzms5xyt2ykd4bhz5yxbkhq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ai26 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220523-gla5aabha2/
Behaviour
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
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
3c7ef16b080ccce01b469ca28fe50c36fc57fa2433ab83fa1b732f9bf6ab41f3
MD5 hash:
611a200a8b47a9351dcda82432029536
SHA1 hash:
f91247bb1c598c226b805bf15d8417c07ff41265
Link:
https://www.unpac.me/results/7bcba389-9559-4b04-a4e2-c834df469546/
SH256 hash:
51bdc77ea1cd3a98d039606829ae04693bc9672c976f89eb0a1f027cf7170a8f
MD5 hash:
beab74622141133f4494e5a327fe7c60
SHA1 hash:
ecc1ff1729a29c90983900657e204af9b3a571b8
Link:
https://www.unpac.me/results/7bcba389-9559-4b04-a4e2-c834df469546/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/51bdc77ea1cd/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/51bdc77ea1cd3a98d039606829ae04693bc9672c976f89eb0a1f027cf7170a8f

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe 51bdc77ea1cd3a98d039606829ae04693bc9672c976f89eb0a1f027cf7170a8f

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/273513/

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