MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31fcaa22e49398fe59bfdbd11e8b341c700c8dab0165b67caf3982f7e7164643. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31fcaa22e49398fe59bfdbd11e8b341c700c8dab0165b67caf3982f7e7164643
SHA3-384 hash: de638057c3769eb67293476a6da65b30042f010857cb4baca1bd001a917dbf5637077378ea17203b8e650c7faaf83a77
SHA1 hash: a1456ef94da9a65199d601a94244f75283a5a604
MD5 hash: b0b77a417db9e331e0f1c6cfb5a7aef6
humanhash: glucose-fruit-white-blossom
File name:IMG_9785.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:402'432 bytes
First seen:2022-01-16 08:07:41 UTC
Last seen:2022-01-17 06:46:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'603 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:DmL6h6vVrDbx+0eRsK/6Z1mFX846zKRpx4NfgnJ/NsW1Wk+JgbVbXOspy13fReQ:APY0YF/6Z1J4sKDxc6QlG5b+spUo
TLSH T1568402217BF58349DDAE43B15563400023B67A5B3632E38DAC8D21CD3AB2B59C752F6B
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
4
# of downloads :
254
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
IMG_9785.exe
Verdict:
Malicious activity
Analysis date:
2022-01-16 08:11:17 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/fe3d40b8-d575-4517-9042-236c8238ef59

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/219586/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1156.3824.21701.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed print.exe
Link:
https://www.filescan.io/uploads/61e3d266e997359713f73841/reports/c801df5d-1216-4985-8b85-f5b53559eff8/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/286ee49e-7d02-49e2-b17e-8d6c386a3f98
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/921347
Signature
.NET source code contains potential unpacker
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)
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
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: 553825 Sample: IMG_9785.exe Startdate: 16/01/2022 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 Yara detected AntiVM3 2->38 40 5 other signatures 2->40 10 IMG_9785.exe 3 2->10         started        process3 file4 32 C:\Users\user\AppData\...\IMG_9785.exe.log, ASCII 10->32 dropped 50 Tries to detect virtualization through RDTSC time measurements 10->50 14 IMG_9785.exe 10->14         started        17 IMG_9785.exe 10->17         started        19 IMG_9785.exe 10->19         started        signatures5 process6 signatures7 52 Modifies the context of a thread in another process (thread injection) 14->52 54 Maps a DLL or memory area into another process 14->54 56 Sample uses process hollowing technique 14->56 58 Queues an APC in another process (thread injection) 14->58 21 explorer.exe 14->21 injected process8 process9 23 wscript.exe 21->23         started        signatures10 42 Self deletion via cmd delete 23->42 44 Modifies the context of a thread in another process (thread injection) 23->44 46 Maps a DLL or memory area into another process 23->46 48 Tries to detect virtualization through RDTSC time measurements 23->48 26 cmd.exe 1 23->26         started        28 explorer.exe 1 155 23->28         started        process11 process12 30 conhost.exe 26->30         started       
Gathering data
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-01-16 03:47:23 UTC
File Type:
PE (.Net Exe)
Extracted files:
25
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gh6kuixesomp4wn73pir5czudryazdnlafs3m7fphgbppzywizbq._file
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:eqhv loader rat suricata
Link:
https://tria.ge/reports/220116-j1j2vaffdm/
Behaviour
Checks processor information in registry
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
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
438c184cea1b464e6d5ad95d8d4ccc18a275d4e4823c1267014e4e6adedc0d45
MD5 hash:
1dfd52ddf6631f7bb887b766d8ddbed1
SHA1 hash:
37000e4f018c19f95b692f479ae536f706fcc9f1
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/767e6cd9-066c-4fee-a8fa-18a02728b392/
Parent samples :
10fcf85b41853da43a006c56a60173427f7b31f11cfb72e87c8bf5d537c59f8e
5568c3fed11b0714b4cf891d08bd645cdee9ba3801bcb4c31a16a510f23c6898
31fcaa22e49398fe59bfdbd11e8b341c700c8dab0165b67caf3982f7e7164643
400558d78a7f45c87f3e0376dd0082f6df8dc35a4e547b2c8bdd44a01f978a65
SH256 hash:
ede303318ff0f40575143337d46885cada5869027e0780cb345bdb1c0e1fae2b
MD5 hash:
db870af72fc92665b3a77b99c00405c3
SHA1 hash:
d028a394410c70f8f610be5627f309f036bbb5fc
Link:
https://www.unpac.me/results/767e6cd9-066c-4fee-a8fa-18a02728b392/
SH256 hash:
9dab94a723a7577487a94db9c18953baf6b6eef52f5e645ecd7146a174ecaeef
MD5 hash:
2ae6286d32294165982f864fade9ae73
SHA1 hash:
5ad10cf1627f7c5e88d3e89f84980c68e140576e
Link:
https://www.unpac.me/results/767e6cd9-066c-4fee-a8fa-18a02728b392/
SH256 hash:
31fcaa22e49398fe59bfdbd11e8b341c700c8dab0165b67caf3982f7e7164643
MD5 hash:
b0b77a417db9e331e0f1c6cfb5a7aef6
SHA1 hash:
a1456ef94da9a65199d601a94244f75283a5a604
Link:
https://www.unpac.me/results/767e6cd9-066c-4fee-a8fa-18a02728b392/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/31fcaa22e49398fe59bfdbd11e8b341c700c8dab0165b67caf3982f7e7164643

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: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.

Malspam

Formbook

zip 39f9ad951a110966ab4905994f48498d3872e0a1ce5756df37fb68dd6681566f

Formbook

Executable exe 31fcaa22e49398fe59bfdbd11e8b341c700c8dab0165b67caf3982f7e7164643

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 39f9ad951a110966ab4905994f48498d3872e0a1ce5756df37fb68dd6681566f
Cape
Cape
https://www.capesandbox.com/analysis/219586/

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