MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 39da5fd546b1ef1e8b72e56a95ac89f0e6bded69816ab72b96dd54c5e2c12517. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 39da5fd546b1ef1e8b72e56a95ac89f0e6bded69816ab72b96dd54c5e2c12517
SHA3-384 hash: 004dc278c87f4e8ed4aeae6bbc1a6317ef3ea92992637e4ae46fe42f2c12969896e50115f8988d07dd825eabff09f729
SHA1 hash: 97fe0abecb1ed1faedde867485de566d879a2a70
MD5 hash: 1fb45ed5a8de2d0818db9cc1051ccaad
humanhash: kansas-early-oscar-snake
File name:1fb45ed5a8de2d0818db9cc1051ccaad.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:274'518 bytes
First seen:2022-05-12 07:31:37 UTC
Last seen:2022-05-12 08:57:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:LOtIOOsSo2ZM9IW9fLznEgBKKol9JHMjuo3f/+y16:LOL8o2ZM9IW9nh8HMjLvGy16
TLSH T12A4412519BE4E043FEBB1B724A775B478FF9990848F059471FA01F4ABD61243AA2F720
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
207
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/269947/
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
Sending a custom TCP request
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
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/17265/overview
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/627cb82e89dc6403e777665e/reports/7ecf6006-1c15-46d4-845f-ae193a1d29cb/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/b2fb2bc0-01ee-4976-9260-d8105f90df42
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/992635
Signature
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Injects a PE file into a foreign processes
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
Snort IDS alert for network traffic
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: 625133 Sample: AHvUaOpSfq.exe Startdate: 12/05/2022 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 5 other signatures 2->53 11 AHvUaOpSfq.exe 19 2->11         started        process3 file4 31 C:\Users\user\AppData\Local\Temp\eyrszu.exe, PE32 11->31 dropped 14 eyrszu.exe 11->14         started        process5 signatures6 63 Multi AV Scanner detection for dropped file 14->63 65 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 14->65 67 Tries to detect virtualization through RDTSC time measurements 14->67 69 Injects a PE file into a foreign processes 14->69 17 eyrszu.exe 14->17         started        process7 signatures8 39 Modifies the context of a thread in another process (thread injection) 17->39 41 Maps a DLL or memory area into another process 17->41 43 Sample uses process hollowing technique 17->43 45 Queues an APC in another process (thread injection) 17->45 20 explorer.exe 17->20 injected process9 dnsIp10 33 www.potsbyplantpeople.com 3.64.163.50, 49801, 80 AMAZON-02US United States 20->33 35 www.vanuatunews.online 20->35 37 vanuatunews.online 34.102.136.180, 49798, 80 GOOGLEUS United States 20->37 55 System process connects to network (likely due to code injection or exploit) 20->55 24 svchost.exe 20->24         started        signatures11 process12 signatures13 57 Modifies the context of a thread in another process (thread injection) 24->57 59 Maps a DLL or memory area into another process 24->59 61 Tries to detect virtualization through RDTSC time measurements 24->61 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/39da5fd546b1ef1e8b72e56a95ac89f0e6bded69816ab72b96dd54c5e2c12517/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-10 12:31:36 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
23 of 41 (56.10%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hhnf7vkgwhxr5c3s4vvjllej6dtl33ljqfvlok4w3vkmlywbeulq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:rx29 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220512-jczgmabag4/
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:
b305bb68228cca48853bb93772672ade483ec210ae0e8d67297b10253e623126
MD5 hash:
29ac1144925bb9d79b71cc9a15af19b4
SHA1 hash:
ceabf43e62fd94575731b3d0a4128b9bf79219ac
Link:
https://www.unpac.me/results/c419f4a5-c15a-411d-b1b9-3fd4c16d545a/
SH256 hash:
9c56af5cbade13e747e61b5a7994d6d0e488c401f4986074509640fa4df607a5
MD5 hash:
acae5c96cec5f1b18fb34b9e370b3a10
SHA1 hash:
19df423a0681e28a8e6859aa8b241d9ece411ef7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/c419f4a5-c15a-411d-b1b9-3fd4c16d545a/
Parent samples :
39da5fd546b1ef1e8b72e56a95ac89f0e6bded69816ab72b96dd54c5e2c12517
28c758c9863ef77da34aa104fbb05b0b82547817efe4dbda0349891237dea3d0
6043c59b851684edcaac6b0586f079cde35cacfc717a0c5b25dec5ae0f568764
SH256 hash:
39da5fd546b1ef1e8b72e56a95ac89f0e6bded69816ab72b96dd54c5e2c12517
MD5 hash:
1fb45ed5a8de2d0818db9cc1051ccaad
SHA1 hash:
97fe0abecb1ed1faedde867485de566d879a2a70
Link:
https://www.unpac.me/results/c419f4a5-c15a-411d-b1b9-3fd4c16d545a/
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/39da5fd546b1ef1e8b72e56a95ac89f0e6bded69816ab72b96dd54c5e2c12517

File information

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

Web download

Formbook

Executable exe 39da5fd546b1ef1e8b72e56a95ac89f0e6bded69816ab72b96dd54c5e2c12517

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2188632/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/269947/

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