MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8cb7736a5f9c3be642d8ee0f07f7a293e210a7bc74cbbc9ba89e483ff22634cb. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8cb7736a5f9c3be642d8ee0f07f7a293e210a7bc74cbbc9ba89e483ff22634cb
SHA3-384 hash: 82fe64d3036e30385d06ba8a64d1594cd0fe72b961df87c80d293fa52182589b87e8a9d49bbc4d8990292a5f995b428e
SHA1 hash: 750d7f9bc16029e5e7229c88c3363e03e2b50e7d
MD5 hash: f1d95bc5972ece6c0ab4d64bd5c41721
humanhash: eighteen-robert-kilo-jig
File name:Quotation 2101137.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:341'640 bytes
First seen:2022-12-09 07:49:04 UTC
Last seen:2022-12-09 14:00:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 97318da386948415d08cef4a9006d669 (71 x Formbook, 35 x SnakeKeylogger, 26 x AgentTesla)
ssdeep 6144:9kwb4cTPlzXPps8WC6KeBYfzFRyXxwwqIObWNlpPBV33nxqcI3hEONpJ364lH:P4cTPRXPps55gFaxLAbQTPBVgcI3CAp7
TLSH T178742239B9D12D7BF0848EB096FA7FADCB3163020C8DB4C75B585B36AD257CA41066C9
TrID 92.7% (.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 lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
4
# of downloads :
173
Origin country :
DE DE
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/344612/
Detection(s):
SecuriteInfo.com.FileRepMalware.10828.3315.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Launching a process
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6392e8ab0c6473d1671a19d8/reports/b6d52caa-759a-4742-938e-0a31896e24f6/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/bdbeace2-367b-479a-9641-ed315498ce7a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1131265
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
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)
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 harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 763989 Sample: Quotation 2101137.exe Startdate: 09/12/2022 Architecture: WINDOWS Score: 100 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 4 other signatures 2->55 10 Quotation 2101137.exe 19 2->10         started        process3 file4 31 C:\Users\user\AppData\Local\...\etehonor.exe, PE32 10->31 dropped 13 etehonor.exe 1 2 10->13         started        process5 file6 33 C:\Users\user\AppData\...\clbbmvmtrv.exe, PE32 13->33 dropped 67 Maps a DLL or memory area into another process 13->67 17 etehonor.exe 13->17         started        signatures7 process8 signatures9 41 Modifies the context of a thread in another process (thread injection) 17->41 43 Maps a DLL or memory area into another process 17->43 45 Sample uses process hollowing technique 17->45 47 Queues an APC in another process (thread injection) 17->47 20 explorer.exe 17->20 injected process10 dnsIp11 35 www.relays.info 109.70.26.37, 49716, 49717, 49718 RU-CENTERRU Russian Federation 20->35 37 www.estacatemucocautin.com 154.210.53.58, 49707, 80 ITACE-AS-APItaceInternationalLimitedHK Seychelles 20->37 39 2 other IPs or domains 20->39 57 System process connects to network (likely due to code injection or exploit) 20->57 24 chkdsk.exe 13 20->24         started        27 clbbmvmtrv.exe 20->27         started        signatures12 process13 signatures14 59 Tries to steal Mail credentials (via file / registry access) 24->59 61 Tries to harvest and steal browser information (history, passwords, etc) 24->61 63 Modifies the context of a thread in another process (thread injection) 24->63 65 Maps a DLL or memory area into another process 24->65 29 WerFault.exe 4 10 27->29         started        process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8cb7736a5f9c3be642d8ee0f07f7a293e210a7bc74cbbc9ba89e483ff22634cb/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-12-09 07:50:07 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
19 of 25 (76.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rs3xg2s7tq56mqwy5yhqp55csprbbj54otf3zg5itzed74rggtfq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:yurm persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/221209-jn9fzacf56/
Behaviour
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
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/a16cdfca-15da-489f-8d05-5c7f08f4d121
Unpacked files
SH256 hash:
a64d6cec14a507ac13efa67684d55a1b2c2b30b1acc9b0b2e06eed97a3f6329c
MD5 hash:
595b6378caa8d5b8223cc7e47a5ca1b8
SHA1 hash:
613c526519e3aad1415143477e62e5e948c4fe2f
Detections:
XLoader
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/205311ce-5a7d-435d-8793-ed5621487f62/
Parent samples :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 hash:
d72636b688f1516d95c5f4284e7bb48b4cdbb84be29602256352eb9bcd201b16
MD5 hash:
67ab1a1d4928f5ad3fa5da8d62da9526
SHA1 hash:
5065f154f716e6938d9364437f91ca8190d74571
Link:
https://www.unpac.me/results/205311ce-5a7d-435d-8793-ed5621487f62/
SH256 hash:
1a1999272e5094e51321bccd8e264ecaf59eb7bbc59aa69dd2f8560abeded530
MD5 hash:
261fb6374a6d884addd4fe52829ed604
SHA1 hash:
b2eb9bb4c1e14af40865c5fcfad4474ce819eb01
Link:
https://www.unpac.me/results/205311ce-5a7d-435d-8793-ed5621487f62/
SH256 hash:
8cb7736a5f9c3be642d8ee0f07f7a293e210a7bc74cbbc9ba89e483ff22634cb
MD5 hash:
f1d95bc5972ece6c0ab4d64bd5c41721
SHA1 hash:
750d7f9bc16029e5e7229c88c3363e03e2b50e7d
Link:
https://www.unpac.me/results/205311ce-5a7d-435d-8793-ed5621487f62/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8cb7736a5f9c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.63
Link:
https://yomi.yoroi.company/submissions/8cb7736a5f9c3be642d8ee0f07f7a293e210a7bc74cbbc9ba89e483ff22634cb

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
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 8cb7736a5f9c3be642d8ee0f07f7a293e210a7bc74cbbc9ba89e483ff22634cb

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/344612/

Comments