MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8609c653acdc7e73ef670f8890468bae5d77094e41a023715054e3cb4c73ea32. 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: 16


Intelligence 16 IOCs YARA 7 File information Comments
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SHA256 hash: 8609c653acdc7e73ef670f8890468bae5d77094e41a023715054e3cb4c73ea32
SHA3-384 hash: 510ec6aec9b39be8a07381dd1661d6bcf1cb9d0e93c98ae64a545055e6256856f9b93aed6cc575d6d085dc8e7fa54081
SHA1 hash: 7581390a3aba3e9f2298d0c7c587d75fdf035442
MD5 hash: fa54d186e66b9a2e4ee28196ed3b8d32
humanhash: island-yankee-thirteen-snake
File name:RFQ_#001311022.exe
Download: download sample
Signature Formbook
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File size:806'400 bytes
First seen:2022-11-01 04:22:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 12288:gmAgHtDg5xE18VMdVorLb3553tcG3MztfJ4SdoLfNpu1QyBjb97VjBwd3z5LErq:gO4RVGorX3HCmwj4hfNpEQUb97VVU39
TLSH T16A05C03439FB511DF2779F308FD574EA8AAEF7232607E46A249107824712F81DD9263A
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 GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
364
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
RFQ_#001311022.exe
Verdict:
Malicious activity
Analysis date:
2022-11-01 04:24:57 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/7b413e66-0b09-47df-9cac-ee68dfdde2ab

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/326660/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.63265461.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63609f28a5db8d309cbc22a5/reports/ae91bbbe-e387-45e8-b63d-7e0a9b4faec2/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1e742174-3b12-4557-a7f1-266015371fdf
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1102235
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in 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 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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 734896 Sample: RFQ_#001311022.exe Startdate: 01/11/2022 Architecture: WINDOWS Score: 100 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 8 other signatures 2->44 10 RFQ_#001311022.exe 3 2->10         started        process3 file4 30 C:\Users\user\...\RFQ_#001311022.exe.log, ASCII 10->30 dropped 54 Tries to detect virtualization through RDTSC time measurements 10->54 56 Injects a PE file into a foreign processes 10->56 14 RFQ_#001311022.exe 10->14         started        17 RFQ_#001311022.exe 10->17         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 19 explorer.exe 14->19 injected process8 dnsIp9 32 www.shopprettytees.com 91.195.240.117, 49702, 80 SEDO-ASDE Germany 19->32 34 www.jwbiz4.net 19->34 36 parkingpage.namecheap.com 198.54.117.218, 49703, 80 NAMECHEAP-NETUS United States 19->36 46 System process connects to network (likely due to code injection or exploit) 19->46 23 WWAHost.exe 19->23         started        signatures10 process11 signatures12 48 Modifies the context of a thread in another process (thread injection) 23->48 50 Maps a DLL or memory area into another process 23->50 52 Tries to detect virtualization through RDTSC time measurements 23->52 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8609c653acdc7e73ef670f8890468bae5d77094e41a023715054e3cb4c73ea32/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-10-31 05:02:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qye4mu5m3r7hh33hb6ejarulvzoxockoigqcg4kqktr4wtdt5iza._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:th47 rat spyware stealer trojan
Link:
https://tria.ge/reports/221101-ezsv5sghfq/
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
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
630c4eb51628e06077fd2e3e47def8d41f9e373cc895ab424ade0592040496a4
MD5 hash:
dd6b9fbc8d83027a1ffaa2c29d5b996a
SHA1 hash:
24a8cf4f688e325aba779e69d86969eb954dd904
Detections:
FormBook
Create hunting rule
win_formbook_auto
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win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/c8a0ac5e-c86d-4504-a5ee-8f22329678d9/
Parent samples :
95747924e9aaef24f1d50fbcf529488eadb11e979b68626b01f77cfd267766ad
970a19abf7f723392ba6b7bebddfdf23580bc65869b5149f5288f9dbec8bd84c
4874958587695f991e81ddbdd809c56c5702877e8cd5500936005d41b5e3c734
8609c653acdc7e73ef670f8890468bae5d77094e41a023715054e3cb4c73ea32
a68a00fe2cda67c8b0a15bbc5a3a26301d736e0481fa2152dbce2211b58da1e1
SH256 hash:
a327516357b9fa1a75753b3fbd0030e13f374be7cefcdf983d0b731f278b0c59
MD5 hash:
404efdeb9931733904da07f96fabeb72
SHA1 hash:
7ce363cd612f1d9a90b33ec196c4d0a49cdaee02
Link:
https://www.unpac.me/results/c8a0ac5e-c86d-4504-a5ee-8f22329678d9/
SH256 hash:
8ba75619d8e62d73c456539cb5361de1b5042eb7332bf40ba018d924e8d5bef6
MD5 hash:
742cdddbc30308ab72816e16f4d7a824
SHA1 hash:
6b84c1df99cf15774e3fe57ff6104d106208c88c
Link:
https://www.unpac.me/results/c8a0ac5e-c86d-4504-a5ee-8f22329678d9/
SH256 hash:
8609c653acdc7e73ef670f8890468bae5d77094e41a023715054e3cb4c73ea32
MD5 hash:
fa54d186e66b9a2e4ee28196ed3b8d32
SHA1 hash:
7581390a3aba3e9f2298d0c7c587d75fdf035442
Link:
https://www.unpac.me/results/c8a0ac5e-c86d-4504-a5ee-8f22329678d9/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8609c653acdc/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/8609c653acdc7e73ef670f8890468bae5d77094e41a023715054e3cb4c73ea32

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
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 8609c653acdc7e73ef670f8890468bae5d77094e41a023715054e3cb4c73ea32

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/326660/

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