MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b85b17dc8f9e09356da1c51e8c2d71bbdbaadcaaac9bc00e61635f8b03db2d4a. 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 4 File information Comments
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SHA256 hash: b85b17dc8f9e09356da1c51e8c2d71bbdbaadcaaac9bc00e61635f8b03db2d4a
SHA3-384 hash: 9bf02d840762e35d7e9a98185874e75d77d152a8b3a54542bde0d8f025ea751b5164252d63375e23d0919b55f42f676b
SHA1 hash: b3707dfa0ef07828c346431db829b3dd6fc596b9
MD5 hash: f93489eac1917aacc6c6d7446982b8f6
humanhash: angel-london-zebra-jersey
File name:Invoice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:475'648 bytes
First seen:2021-12-03 17:30:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'660 x AgentTesla, 19'470 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:B2iNaQ8t0NWTfQ1MEhWPFM9P2x6JcEKetD00:B1k0WfVE4tM9P2x2jC0
Threatray 15'268 similar samples on MalwareBazaar
TLSH T19BA412DB3798D74BEE3E87B18473D0A013B1B55B6A15CE9BADC571CA1A30B0121927B3
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
277
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Invoice.exe
Verdict:
Suspicious activity
Analysis date:
2021-12-03 17:33:16 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/059afb2b-72b9-4121-abd7-f5901da5ea6f

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/211106/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
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
Link:
https://www.filescan.io/uploads/61aa54584d8e6f3a5e0da8e0/reports/8441dc9d-3760-48c1-ab43-35be1c37e012/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/3c0df9fe-41c4-4ec2-b13b-eccb997073b7
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/901072
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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
Self deletion via cmd delete
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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: 533553 Sample: Invoice.exe Startdate: 03/12/2021 Architecture: WINDOWS Score: 100 39 www.viorant.com 2->39 41 www.popcornpor.xyz 2->41 43 7 other IPs or domains 2->43 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 12 other signatures 2->61 11 Invoice.exe 3 2->11         started        signatures3 process4 file5 37 C:\Users\user\AppData\...\Invoice.exe.log, ASCII 11->37 dropped 73 Tries to detect virtualization through RDTSC time measurements 11->73 75 Injects a PE file into a foreign processes 11->75 15 Invoice.exe 11->15         started        18 Invoice.exe 11->18         started        signatures6 process7 signatures8 79 Modifies the context of a thread in another process (thread injection) 15->79 81 Maps a DLL or memory area into another process 15->81 83 Sample uses process hollowing technique 15->83 85 Queues an APC in another process (thread injection) 15->85 20 explorer.exe 15->20 injected process9 signatures10 63 System process connects to network (likely due to code injection or exploit) 20->63 23 rundll32.exe 12 20->23         started        process11 dnsIp12 45 www.dy718777.com 23->45 65 System process connects to network (likely due to code injection or exploit) 23->65 67 Self deletion via cmd delete 23->67 69 Modifies the context of a thread in another process (thread injection) 23->69 71 2 other signatures 23->71 27 explorer.exe 23->27         started        31 explorer.exe 2 144 23->31         started        33 cmd.exe 1 23->33         started        signatures13 process14 dnsIp15 47 beyondyourself.online 195.110.124.133, 49914, 80 REGISTER-ASIT Italy 27->47 49 new2pc.online 198.187.29.20, 49932, 80 NAMECHEAP-NETUS United States 27->49 53 13 other IPs or domains 27->53 77 System process connects to network (likely due to code injection or exploit) 27->77 51 192.168.2.1 unknown unknown 31->51 35 conhost.exe 33->35         started        signatures16 process17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b85b17dc8f9e09356da1c51e8c2d71bbdbaadcaaac9bc00e61635f8b03db2d4a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-12-03 17:31:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xbnrpxeptyetk3nbyupiyllrxpn2vxfkvsn4adtbmnpywa63fvfa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
15e4f50b213a1cc5545dd4a173eabfed7f2ea6019117fdc374ef1514632bdb55
Formbook
3f95e7795f8c0b70983561a48425e735ef7832603543980f460b1356403ec622
Formbook
47e997e572407a3a805deaa7e7bca8d20990f23901c7199f1add2e550763dbf5
Formbook
48f6e66bd79f4963bd12037988a93f1708a63e4caa7e17a0ba7cc11fdb90076b
Formbook
733d497a01920cda976dbb7008a4bbf8f1ad7e2e6935a72ac16c060f0beffc5e
Formbook
7415f5e7f8ae4514ca13ec7ae4e3b4005e93c63eaba82d03048de5f60eb784fa
Formbook
dce5f044b1f4396f33c3574667169dcbdeb3aebb037c9f53d7a8c38e095f576d
Formbook
dd4af1effdd1081fccbd05d035c4dfac3b992a358e2a6a6140095d0385ca7f5e
Formbook
e146d9fee7645fc19d995f9d018cac7d0070acf5399128b8435e8532df423921
Formbook
eef137583da6deb4a1be9882cede6cec5112b74ae79c0773f45b13346c5b2890
Formbook
+ 15'258 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:ecus loader rat suricata
Link:
https://tria.ge/reports/211203-v3pwnahban/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.ptintelligence.com/ecus/
Unpacked files
SH256 hash:
a34b031f3e485c1e0dbe18be5f2380592a637b78334bb7f0aee2615a0c2756a5
MD5 hash:
e22d650db2e6bb21bd6b21e6ed957814
SHA1 hash:
6766615716e950bf14571c5aca6b5919f595c289
Link:
https://www.unpac.me/results/78535ace-5feb-4fb0-9177-34e8b8f346e3/
SH256 hash:
1eba3e6e55f4aa87ee88dad11183f808f00870bf6277e3ae19fb31400a1dbe5b
MD5 hash:
00b620728472aef2af115e0455930cf8
SHA1 hash:
649a4ad0f13a3176ea36b855c1b36fbce246446a
Link:
https://www.unpac.me/results/78535ace-5feb-4fb0-9177-34e8b8f346e3/
SH256 hash:
b85b17dc8f9e09356da1c51e8c2d71bbdbaadcaaac9bc00e61635f8b03db2d4a
MD5 hash:
f93489eac1917aacc6c6d7446982b8f6
SHA1 hash:
b3707dfa0ef07828c346431db829b3dd6fc596b9
Link:
https://www.unpac.me/results/78535ace-5feb-4fb0-9177-34e8b8f346e3/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b85b17dc8f9e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/b85b17dc8f9e09356da1c51e8c2d71bbdbaadcaaac9bc00e61635f8b03db2d4a

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
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Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
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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

Executable exe b85b17dc8f9e09356da1c51e8c2d71bbdbaadcaaac9bc00e61635f8b03db2d4a

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/211106/

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