MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83fb913f2698b853cb1ef1d9bd54bf06c7bd660028f1440d3c080c02ab4b9f1e. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83fb913f2698b853cb1ef1d9bd54bf06c7bd660028f1440d3c080c02ab4b9f1e
SHA3-384 hash: bd7014779d7c6ad0c7efa31f8d146e8892f33ada65ca697708c88459cf04e2ce7eab6a6bb0fde934f5164f0f3264d7a0
SHA1 hash: 6ed691cc909f17d7c289eec4542a067939877aaf
MD5 hash: f85d9eb0cf28a546f016ebce68f9269a
humanhash: march-pasta-mirror-hawaii
File name:scan documents 31AUG.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:772'608 bytes
First seen:2021-08-31 13:15:54 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:vY8iOa950YM/676897lMg5Comh3seWiF9+Q+e6F:/Yw67psg5G3VFdM
Threatray 8'687 similar samples on MalwareBazaar
TLSH T103F42F7F19BDA2279175C6F58BE78423F0008B6F3110A92476D357264326A7AB4F336E
Reporter malwarelabnet
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
218
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
scan documents 31AUG.exe
Verdict:
Malicious activity
Analysis date:
2021-08-31 16:18:03 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/51d2e77a-43a9-4cdd-9f1b-67ad082acc39

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/184211/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Malware family:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8b2cd4aa-c23d-4b02-a159-64c0a1a6c721
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/842682
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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 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 dnsIp2 2 Behavior Graph ID: 475119 Sample: scan documents 31AUG.exe Startdate: 31/08/2021 Architecture: WINDOWS Score: 100 31 www.actonetheatre.com 2->31 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 8 other signatures 2->45 11 scan documents 31AUG.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\...\scan documents 31AUG.exe.log, ASCII 11->29 dropped 55 Injects a PE file into a foreign processes 11->55 15 scan documents 31AUG.exe 11->15         started        signatures6 process7 signatures8 57 Modifies the context of a thread in another process (thread injection) 15->57 59 Maps a DLL or memory area into another process 15->59 61 Sample uses process hollowing technique 15->61 63 Queues an APC in another process (thread injection) 15->63 18 explorer.exe 15->18 injected process9 dnsIp10 33 www.valorplanodesaudemaranhao.info 18->33 35 mtxs8.com 107.160.114.181, 49725, 80 AS40676US United States 18->35 37 9 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 msiexec.exe 18->22         started        signatures11 process12 signatures13 49 Self deletion via cmd delete 22->49 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/83fb913f2698b853cb1ef1d9bd54bf06c7bd660028f1440d3c080c02ab4b9f1e/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-31 02:13:30 UTC
AV detection:
13 of 46 (28.26%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qp5zcpzgtc4fhsy66hm32vf7a3d32zqafdyuidj4bagafk2lt4pa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1dc173b24c0b503a394568e4a1fff7887dd739cc287e529f25b173dbfea4010b
Formbook
3f9a8485314c2b666caf0a1a729a96cb974780f331ea9baa0c03e7f02035cf05
Formbook
4f588080c3618162c1bd0337092af0ba118b7277de6c2043a988562efdb0cbbb
Formbook
6733d0ce3ad0c63755f82e7c05a815f2420cccd7f7775dd9227732f59e7fafff
Formbook
6db6324fe282260a224e77fff9bdad3240a63d48ac587f2a701785ea69c317a5
Formbook
6fac52318b313ba9642ecb060c7725dbbd3e0b1146e936deb2b635ce7a255a2e
Formbook
852cc855a1aa63d081ebeec5fd688a3c80d50a14d80c760256c4b46208d77b8d
Formbook
b9ecf814b7f31a8ee1445d0256ba7a74f46d3e8f0bb588d10c54cd7f7f0fc202
Formbook
de3c81ef7e59a386f6572d4c095739d45493d90b03c348748200012ec165372f
Formbook
+ 8'677 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:mej0 loader rat
Link:
https://tria.ge/reports/210831-k2cn2gnbws/
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 UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.lifewithbriana.com/mej0/
Unpacked files
SH256 hash:
a828137f26efcaa656d7ff8b220aef97b33e32125eb36d6d62b964a83f13057b
MD5 hash:
ac8e94fe61f6dc8c33785c9a6fd474b8
SHA1 hash:
e3e1dcf21308ac20a1ed5f18a83d34479f7361d9
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/42e90fda-70aa-4dc5-9a9a-e6005f01bb2e/
Parent samples :
6fac52318b313ba9642ecb060c7725dbbd3e0b1146e936deb2b635ce7a255a2e
605f58fa5e5f09a4f869e6e14ebc5e537c6a9d31b8b106e08706068d1e587659
83fb913f2698b853cb1ef1d9bd54bf06c7bd660028f1440d3c080c02ab4b9f1e
e94ab3e9bc6dfb0889e82075cbef674de3c160a8d4bbf9b3d596381bebf492af
36d409b61a0f456cb3e593338ebf2db1fae38ea645392d98030bc7e7a0eb9a3c
2693c8389ae1a86a3cdd7d300c501c0220768773cc4fb9397e54eb0f48dd1aa1
SH256 hash:
908fa82d1a026a5d8cfd1467a11f0912a69f59c4b0aebf925af233241a3e0727
MD5 hash:
783aa6cd471d38a992d60cb18fc47c4b
SHA1 hash:
b6ee1beb930838f0deac0e57b99b3a6aa814cd67
Link:
https://www.unpac.me/results/42e90fda-70aa-4dc5-9a9a-e6005f01bb2e/
SH256 hash:
fde77ba95771eb9e1e9694c513a022a6b738fe0fc99bb20aaedc66a250db89db
MD5 hash:
00a358d59a96aaa1c4874f0c678bb566
SHA1 hash:
ad263cdb73d97ed83761abf9dcc621fe6b60eae2
Link:
https://www.unpac.me/results/42e90fda-70aa-4dc5-9a9a-e6005f01bb2e/
SH256 hash:
83fb913f2698b853cb1ef1d9bd54bf06c7bd660028f1440d3c080c02ab4b9f1e
MD5 hash:
f85d9eb0cf28a546f016ebce68f9269a
SHA1 hash:
6ed691cc909f17d7c289eec4542a067939877aaf
Link:
https://www.unpac.me/results/42e90fda-70aa-4dc5-9a9a-e6005f01bb2e/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/83fb913f2698/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/83fb913f2698b853cb1ef1d9bd54bf06c7bd660028f1440d3c080c02ab4b9f1e

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:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/184211/

Comments