MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7d850c7483817ae91c6b6dde59c22141b754d04ec2e0985ffcd85b08f2e9ae58. 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 8 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7d850c7483817ae91c6b6dde59c22141b754d04ec2e0985ffcd85b08f2e9ae58
SHA3-384 hash: a306677fa96a8b02620283434ea987056fe10968e00c6f8db4334876dc29489f3c083473c32c7c53475573f1ba50e74f
SHA1 hash: e54b0ca25b62d3f377b68d3037ff4d78350a627b
MD5 hash: 79f342dceff76485db960d4e9de522f2
humanhash: bakerloo-enemy-neptune-nevada
File name:79f342dceff76485db960d4e9de522f2
Download: download sample
Signature Formbook
Create hunting rule
File size:249'776 bytes
First seen:2022-08-31 00:13:02 UTC
Last seen:2022-08-31 00:33:52 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'207 x SnakeKeylogger)
ssdeep 6144:cFgRqbsZzgQvSwEMFusUCj2eY7UBytn4/oOshpgfMc:qsZz+lMksdG7UBa4/o3kMc
TLSH T1B334128232E94855DCF699301C4283210D31966ED9C1DB7F32FBE22A4F53BC5B8DA56E
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon d2e8ecb2b2a2b282 (106 x AgentTesla, 106 x Formbook, 24 x RedLineStealer)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
290
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/306466/
Detection(s):
SecuriteInfo.com.Trojan.DownloaderNET.345.9495.6343.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated overlay packed
Link:
https://www.filescan.io/uploads/630ea82b3e9e50b1baee5785/reports/97e82478-6924-4e58-ac87-de5c705c57ac/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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1061026
Signature
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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
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
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: 693552 Sample: R9hooH8CUf.exe Startdate: 31/08/2022 Architecture: WINDOWS Score: 100 32 www.originalfatfrog.com 2->32 34 www.happy-tile.com 2->34 36 2 other IPs or domains 2->36 46 Snort IDS alert for network traffic 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus detection for URL or domain 2->50 52 5 other signatures 2->52 11 R9hooH8CUf.exe 1 2->11         started        signatures3 process4 file5 30 C:\Users\user\AppData\...\R9hooH8CUf.exe.log, ASCII 11->30 dropped 66 Writes to foreign memory regions 11->66 68 Allocates memory in foreign processes 11->68 70 Injects a PE file into a foreign processes 11->70 72 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->72 15 cvtres.exe 11->15         started        signatures6 process7 signatures8 74 Modifies the context of a thread in another process (thread injection) 15->74 76 Maps a DLL or memory area into another process 15->76 78 Sample uses process hollowing technique 15->78 80 2 other signatures 15->80 18 explorer.exe 15->18 injected process9 dnsIp10 38 www.hhhzzz.xyz 199.101.171.148, 80 UK2NET-ASGB Canada 18->38 40 jivraj9india.com 15.197.142.173, 49762, 80 TANDEMUS United States 18->40 42 3 other IPs or domains 18->42 54 System process connects to network (likely due to code injection or exploit) 18->54 56 Performs DNS queries to domains with low reputation 18->56 22 control.exe 12 18->22         started        signatures11 process12 dnsIp13 44 www.hhhzzz.xyz 22->44 58 Performs DNS queries to domains with low reputation 22->58 60 Modifies the context of a thread in another process (thread injection) 22->60 62 Maps a DLL or memory area into another process 22->62 64 Tries to detect virtualization through RDTSC time measurements 22->64 26 cmd.exe 1 22->26         started        signatures14 process15 process16 28 conhost.exe 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7d850c7483817ae91c6b6dde59c22141b754d04ec2e0985ffcd85b08f2e9ae58/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-08-30 07:18:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
18 of 25 (72.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=pwcqy5edqf5oshdlnxpftqrbig3vjucoylqjqx743bnqr4xjvzma._file
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:zgtb loader persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/220831-ahrjjaebek/
Behaviour
Modifies Internet Explorer settings
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
System policy modification
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Adds policy Run key to start application
Executes dropped EXE
Xloader payload
Formbook
Xloader
Unpacked files
SH256 hash:
8ae8262bd82468ee8acd1957c656d5021b37b0efc562bc75d976c5bd7efd0b71
MD5 hash:
83a18e54b9f0b3aceb72dd95d559bfc4
SHA1 hash:
76405b4c36df2a65fbd78fe2bcbfb9706fd5be9b
Link:
https://www.unpac.me/results/f549ca02-5b6b-41e3-a5bb-a388e4d73386/
SH256 hash:
4c225ce05701dc7a5191207bbaaeebfe27fd8f6ae8d8171842e6a60ac3afccde
MD5 hash:
fcc02cdc0f599bd244e118a5fc710abb
SHA1 hash:
1dddbd0c7bfdc3343358c51528ede1f35ddb32c3
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
XLoader
Create hunting rule
Link:
https://www.unpac.me/results/f549ca02-5b6b-41e3-a5bb-a388e4d73386/
Parent samples :
04e6039e29e0b8f6fb1ec1502a3225c74c4c18f6c0ba1ce10eb2c834ede7f149
a7492a3e2caa18c09290209462772d7356966ed9fe91f86830284d950604b300
17c2bc113099a0d8287c5aeeb76dc5386333256ca8245d2da83a8749bef1d350
0b3fffd1de700b6d54df6bd954e66c523292484ce0686fb0ae5750b57734a0dd
112c01d48613316c5620071a1d3900e798d7421445b1a5174b2a56c228c5c3c2
7d850c7483817ae91c6b6dde59c22141b754d04ec2e0985ffcd85b08f2e9ae58
b47cf0eaed7e3798e77eaf01aac5783f2c03f7db7802a5215523d4ccdc631bc5
SH256 hash:
7d850c7483817ae91c6b6dde59c22141b754d04ec2e0985ffcd85b08f2e9ae58
MD5 hash:
79f342dceff76485db960d4e9de522f2
SHA1 hash:
e54b0ca25b62d3f377b68d3037ff4d78350a627b
Link:
https://www.unpac.me/results/f549ca02-5b6b-41e3-a5bb-a388e4d73386/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/7d850c748381/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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 7d850c7483817ae91c6b6dde59c22141b754d04ec2e0985ffcd85b08f2e9ae58

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2285855/
Cape
Cape
https://www.capesandbox.com/analysis/306466/

Comments


Avatar
zbet commented on 2022-08-31 00:13:08 UTC

url : hxxp://95.214.24.120/vect/XXFHFHFHD.exe