MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4e928ac3e9f7561e6ffe01ded9a72973da0282a4fbb07c3f94cbc2b40bdb13f3. 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 2 File information Comments 1
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SHA256 hash: 4e928ac3e9f7561e6ffe01ded9a72973da0282a4fbb07c3f94cbc2b40bdb13f3
SHA3-384 hash: 1311dacd84dc137f4dddf393cac30c11d0d0dd897598c29dd5d4c9b4963cd6eae746e0ac75b4026d8b2b0286daf71374
SHA1 hash: 75adbc3b6c0695067beb0856418f6b50d00f3ba8
MD5 hash: 6403569f222640afc2d34aaa91dc6a3b
humanhash: seventeen-jig-winner-bluebird
File name:6403569f222640afc2d34aaa91dc6a3b
Download: download sample
Signature Formbook
Create hunting rule
File size:248'751 bytes
First seen:2022-03-29 07:07:54 UTC
Last seen:2022-03-29 08:13:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla)
ssdeep 6144:rGi/yRzuwnZ7YQOimlz49QY7KJLIyU6wqRLPnTchICpOCLIG:Ly1uwnHOHz49QSKJLbw8HyZAzG
Threatray 14'512 similar samples on MalwareBazaar
TLSH T149341249B4C0507BE39B0F71727367BAE338E69216472B97038C7F7E1942A660D49DA3
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
216
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/258987/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.48748506.21231.10397.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Reading critical registry keys
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
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6242b0559253b276b798e6c9/reports/f6a4e35c-d8a1-4acc-bf55-271cebda7e99/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/163fa43a-dc05-4a56-a9f5-ab7916ec2ecc
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/966423
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Performs DNS queries to domains with low reputation
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
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 598910 Sample: wjDBh1jsVP Startdate: 29/03/2022 Architecture: WINDOWS Score: 100 35 www.pescatec.com 2->35 37 www.happystargames.com 2->37 39 happystargames.com 2->39 55 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->55 57 Found malware configuration 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 5 other signatures 2->61 12 wjDBh1jsVP.exe 18 2->12         started        signatures3 process4 file5 33 C:\Users\user\AppData\Local\Temp\prihnv.exe, PE32 12->33 dropped 15 prihnv.exe 12->15         started        process6 signatures7 75 Tries to detect virtualization through RDTSC time measurements 15->75 18 prihnv.exe 15->18         started        process8 signatures9 47 Modifies the context of a thread in another process (thread injection) 18->47 49 Maps a DLL or memory area into another process 18->49 51 Sample uses process hollowing technique 18->51 53 Queues an APC in another process (thread injection) 18->53 21 explorer.exe 18->21 injected process10 dnsIp11 41 www.hs5ae.xyz 45.117.11.243, 80 INTECHONLINE-INIntechOnlinePrivateLimitedIN China 21->41 43 www.momentinv.com 21->43 63 System process connects to network (likely due to code injection or exploit) 21->63 65 Performs DNS queries to domains with low reputation 21->65 25 raserver.exe 12 21->25         started        signatures12 process13 dnsIp14 45 www.hs5ae.xyz 25->45 67 Performs DNS queries to domains with low reputation 25->67 69 Modifies the context of a thread in another process (thread injection) 25->69 71 Maps a DLL or memory area into another process 25->71 73 Tries to detect virtualization through RDTSC time measurements 25->73 29 cmd.exe 1 25->29         started        signatures15 process16 process17 31 conhost.exe 29->31         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4e928ac3e9f7561e6ffe01ded9a72973da0282a4fbb07c3f94cbc2b40bdb13f3/
Threat name:
Win32.Trojan.Tnega
Create hunting rule
Status:
Malicious
First seen:
2022-03-28 14:39:25 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
39992920b2ad02ba761413d61b8c4b7eef23827d26cb50b4236f97c5af7d4d33
Formbook
3c0036c86eda77a41369d7727d4825c280a8a32641e66bdb4b67e80d95ced9f0
Formbook
4d11816de1a6429b0fa2f9754f7e51e45a6afb350ddd5b806974b629e8fc6fc3
Formbook
6bd24ce0a16599d97686146c6a822023f0f4896fcee914eed9a4e45a7e46b864
Formbook
8ee14be97acb9a642ba750f83102361ffa086aeeb3b802531259332fa14e5484
Formbook
9ac626aa27ed91a3d825388f32d02778a0486e8646fcd9a672c29f3ca6f09e56
Formbook
c6cbe14f336bc97cc4bf2db682cc36efc1b371f6cc45509ee347c29348903676
Formbook
db1a111df60b02e8045e9ddd1a0134346f59c66148e2e00ed93ae8033eac5a9a
Formbook
e99eb13ad6ea14742e5e62076e912de73cfd9b27ae3152cd8c84bcfbfe491894
Formbook
+ 14'502 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:r75h rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220329-hx8qcsgfgm/
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:
dba013e90bbb638b403e2dcf49a570eb5ebff8c6ae39863a5c07108d9272f453
MD5 hash:
02170992666a34ad98f78036cf672df4
SHA1 hash:
8dec830447c1bb764692809a85cf1ad872aa0982
Link:
https://www.unpac.me/results/35b200f2-070b-4bc1-ac10-c620cfc76702/
SH256 hash:
5828f46a74d4e565f97c0209f69dc98feaa553c0429c6b75deef1aa42574e0dc
MD5 hash:
3628854688b17f372f94492a92ce4e99
SHA1 hash:
aad21da93f4d65cd081170b45cc53d6a904aa3d2
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/35b200f2-070b-4bc1-ac10-c620cfc76702/
Parent samples :
4e928ac3e9f7561e6ffe01ded9a72973da0282a4fbb07c3f94cbc2b40bdb13f3
8c8afc7e873c1fc04cfc9cc2331ed6f46dad4defd1158e39f10258ee4b477758
90a94c8fc04be1d50454c2bc82163be02335f3a05c001b0aa4d2cab14185135f
595aeb742ed58096ce56f0d2b211914d1a32bf1f56fa28e9ac64edf7cb335a9f
add90f420c37b1391d4e3c22020c664c36a0dc0e0b6c43bfcc2a5f092fa18f0c
74629548435c5209dc523d8e9ae8de11527f646205937d7f645d7db4fe8dfbc0
SH256 hash:
4e928ac3e9f7561e6ffe01ded9a72973da0282a4fbb07c3f94cbc2b40bdb13f3
MD5 hash:
6403569f222640afc2d34aaa91dc6a3b
SHA1 hash:
75adbc3b6c0695067beb0856418f6b50d00f3ba8
Link:
https://www.unpac.me/results/35b200f2-070b-4bc1-ac10-c620cfc76702/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4e928ac3e9f7/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/4e928ac3e9f7561e6ffe01ded9a72973da0282a4fbb07c3f94cbc2b40bdb13f3

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.

Web download

Formbook

Executable exe 4e928ac3e9f7561e6ffe01ded9a72973da0282a4fbb07c3f94cbc2b40bdb13f3

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2118452/
Cape
Cape
https://www.capesandbox.com/analysis/258987/

Comments


Avatar
zbet commented on 2022-03-29 07:07:56 UTC

url : hxxp://192.210.149.28/401/vbc.exe