MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8898f85efa9e25992b6e00da2b7d3338649ebf89d26a92b9bf156618960f5466. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8898f85efa9e25992b6e00da2b7d3338649ebf89d26a92b9bf156618960f5466
SHA3-384 hash: d3a49542a7798225e8b3c64b36fbe8ce7b3d303208e6b6369045a276e84b033acfd756e498397d4f315f8f1594af3bbf
SHA1 hash: e25ace4508b7c7c95594bc3bf186333ca04d8730
MD5 hash: b504c00e693fc83d50cfc05a5228e3a5
humanhash: jupiter-seven-hotel-magazine
File name:both45431.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:248'486 bytes
First seen:2021-07-29 12:34:00 UTC
Last seen:2021-08-09 14:09:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 913f6d6ea2411a4c15c51f2a8b2b970a (3 x Formbook, 2 x AZORult)
ssdeep 6144:xOBAkoCch1rdJjoPH72/24sU7qxVxsX8MPBAto:EcCcbzoPaO4sUexbsX8M+K
Threatray 7'031 similar samples on MalwareBazaar
TLSH T1B0340265C7DD8316E3B18E3A2DBA7EAB8F7C78134D28911F4D9497F89230891CE19247
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
5
# of downloads :
115
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
both45431.exe
Verdict:
Malicious activity
Analysis date:
2021-07-29 12:39:13 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/db39cf1f-6fbe-4000-a9b7-264a05174ba6

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/175019/
Detection(s):
Win.Trojan.Filerepmalware-9882244-0
Create hunting rule

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/4574eeb1-238a-4240-8644-af048f088d95
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/823806
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 456218 Sample: both45431.exe Startdate: 29/07/2021 Architecture: WINDOWS Score: 100 37 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->37 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 4 other signatures 2->43 10 both45431.exe 2->10         started        process3 signatures4 51 Maps a DLL or memory area into another process 10->51 53 Tries to detect virtualization through RDTSC time measurements 10->53 13 both45431.exe 10->13         started        process5 signatures6 55 Modifies the context of a thread in another process (thread injection) 13->55 57 Maps a DLL or memory area into another process 13->57 59 Sample uses process hollowing technique 13->59 61 Queues an APC in another process (thread injection) 13->61 16 explorer.exe 13->16 injected process7 dnsIp8 27 civoconstruction.com 170.10.162.173, 49765, 80 STEADFASTUS United States 16->27 29 bulverderoofing.com 184.168.131.241, 49762, 80 AS-26496-GO-DADDY-COM-LLCUS United States 16->29 31 4 other IPs or domains 16->31 33 System process connects to network (likely due to code injection or exploit) 16->33 35 Uses netsh to modify the Windows network and firewall settings 16->35 20 netsh.exe 16->20         started        signatures9 process10 signatures11 45 Modifies the context of a thread in another process (thread injection) 20->45 47 Maps a DLL or memory area into another process 20->47 49 Tries to detect virtualization through RDTSC time measurements 20->49 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Gathering data
Threat name:
Win32.Infostealer.Azorult
Create hunting rule
Status:
Malicious
First seen:
2021-07-29 12:04:42 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rcmpqxx2tyszsk3oadncw7jthbsj5p4j2jvjfon7cvtbrfqpkrta._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
70bbe5e2d1987ad7bf4cb067ef7c2447ef8fbc668078e725abd14d49857a8d3a
Formbook
78b11874a66b80ec78962b27c352a643d1a11c7f5cf9273f0db06df3f4f7e76c
Formbook
9598f7ebeef58e063e6e5de7da5ea2775991628d11c4fae3e3e2854fa22065eb
Formbook
b8f987a5099e1a1a220893763f00bcff9d84ed2dd49cb4a0ab8f5c595281e5ac
Formbook
c3df575156e76cb9cafff48a4a88da1407c15ba32c4917f80c200f683d619f49
Formbook
e17c6fdddc41bc1200df93f2303ea35ac0d230e04e7641f1b589bf2a9a7d1e3e
Formbook
f0e734543c047d2ca1a76a4e47553e85d50c57ff9d3dfbd0e55806ff890fef38
Formbook
+ 7'021 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/210729-7d9qqhszds/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.bulverderoofing.com/lt0h/
Unpacked files
SH256 hash:
4b0125cd7049dba92a565c874848edee6e6be3f6b32b6a934d9fec5cbd5e4099
MD5 hash:
dee8ae3d305808bd6a1f9fccd12db26a
SHA1 hash:
9112ec525f595e2dc0fff0bb39b7653cc689c028
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0f563845-dc73-44ec-93d0-c9b802b390b2/
Parent samples :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 hash:
8898f85efa9e25992b6e00da2b7d3338649ebf89d26a92b9bf156618960f5466
MD5 hash:
b504c00e693fc83d50cfc05a5228e3a5
SHA1 hash:
e25ace4508b7c7c95594bc3bf186333ca04d8730
Link:
https://www.unpac.me/results/0f563845-dc73-44ec-93d0-c9b802b390b2/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.13
Link:
https://yomi.yoroi.company/submissions/8898f85efa9e25992b6e00da2b7d3338649ebf89d26a92b9bf156618960f5466

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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 8898f85efa9e25992b6e00da2b7d3338649ebf89d26a92b9bf156618960f5466

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/175019/

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