MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a15521135ce72df5cc2d9a02d558558ee3c38e48025e806173f15488b49034f1. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a15521135ce72df5cc2d9a02d558558ee3c38e48025e806173f15488b49034f1
SHA3-384 hash: fef9c87c8eb7ed0cb64e1fd097747193b0a22785e0a210ddfedbd0a59b896808c477b136877293e560fe454594e9651c
SHA1 hash: 611ee1652b4ce5c18f23ae8eebe70726d9f07537
MD5 hash: 2be8e81bfde8abf4bdae8cb44c6cdbe9
humanhash: orange-dakota-hawaii-salami
File name:Outstanding Invoices.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:503'808 bytes
First seen:2022-03-15 08:43:43 UTC
Last seen:2022-03-15 13:11:07 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 12288:3DTRUcZ64yEyhOnX753mx4nIkLjkJ44L9tBWk:TlUx6X7lLEts
Threatray 15'237 similar samples on MalwareBazaar
TLSH T10FB4D024F2395AE1D96D97788820952CCFD9E326D32EF16C2CB774AD40B1BCB0656E07
Reporter TeamDreier
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
6
# of downloads :
210
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Outstanding Invoices.exe
Verdict:
Malicious activity
Analysis date:
2022-03-15 08:58:40 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/9a4e0eb5-923f-41aa-856c-a6800851bc4e

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/250652/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.28491.8964.31856.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/623051fc0cd58dbd929d3865/reports/f2336656-3075-41b9-a19d-d034abd3d1c7/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/87fb0c52-9540-488d-a5ad-6868c6ce7483
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/956819
Signature
.NET source code contains very large strings
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
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: 589300 Sample: Outstanding Invoices.exe Startdate: 15/03/2022 Architecture: WINDOWS Score: 100 32 Malicious sample detected (through community Yara rule) 2->32 34 Multi AV Scanner detection for submitted file 2->34 36 Yara detected AntiVM3 2->36 38 6 other signatures 2->38 10 Outstanding Invoices.exe 3 2->10         started        process3 file4 30 C:\Users\...\Outstanding Invoices.exe.log, ASCII 10->30 dropped 46 Injects a PE file into a foreign processes 10->46 14 Outstanding Invoices.exe 10->14         started        17 Outstanding Invoices.exe 10->17         started        19 Outstanding Invoices.exe 10->19         started        signatures5 process6 signatures7 48 Modifies the context of a thread in another process (thread injection) 14->48 50 Maps a DLL or memory area into another process 14->50 52 Sample uses process hollowing technique 14->52 54 Queues an APC in another process (thread injection) 14->54 21 explorer.exe 14->21 injected process8 process9 23 msdt.exe 21->23         started        signatures10 40 Self deletion via cmd delete 23->40 42 Maps a DLL or memory area into another process 23->42 44 Tries to detect virtualization through RDTSC time measurements 23->44 26 cmd.exe 1 23->26         started        process11 process12 28 conhost.exe 26->28         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a15521135ce72df5cc2d9a02d558558ee3c38e48025e806173f15488b49034f1/
Threat name:
ByteCode-MSIL.Trojan.Tnega
Create hunting rule
Status:
Malicious
First seen:
2022-03-14 13:05:34 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
22 of 27 (81.48%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ufksce2444w7ltbntibnkwcvr3r4hdsiajpiaylt6fkirneqgtyq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1fc86c47ffbc922b4794aa568d681c4632cb69a41a3b89e6bca1c49cc87f0c1f
Formbook
2eae722d2d4b7105bdc2d24e314a0dbfdf49b172b2074d6051f92ad600d13235
Formbook
4b1d78afb4fda1abe829afe62b587e50525f4cd3bda23e762b144d496428f02b
Formbook
5093be897940d2ac40ef45906e0346c113d310a25d0802cd17535f716f4bf381
Formbook
606c0fba8a5d431c5e2f2def1d52fa9dd68d0fb9ae415c25ef7b3b8895317add
Formbook
6c5bb0bbd4973666ee779f809dc98c94cfd6eb2650df78feb00c5e391bb4c49f
Formbook
6d6b50ac34692e324b25147855ff3a075b1d5505f7fd550e405bca20ad94879a
Formbook
7d29ff32379efd3a3ee28d4204ebf7515025b86a4bdd7bd59a577ef1f6c9a2ba
Formbook
+ 15'227 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:pc20 loader rat
Link:
https://tria.ge/reports/220315-km7reshcc7/
Behaviour
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Unpacked files
SH256 hash:
55368c2d63542a60b2a0fc3d76ab706893aebbf8f83bd51e309e46187102336c
MD5 hash:
1d2291ecaf0039c1165bdc594a0ac21a
SHA1 hash:
4036a5c4cc371d8113623527a4111d846ad9b630
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/a40db8d3-262b-4bf0-aece-3b934cc0a707/
Parent samples :
a15521135ce72df5cc2d9a02d558558ee3c38e48025e806173f15488b49034f1
db10c659605c7a9a4fe4c7e539cd8edbd8b14d84403b85df2ed36e7d51b4c485
40fa9ba8113198bf73af0101d0c0275ed1ef014a15fd83457dbdbd29e80f99a8
8693f77ce4f72e78f7635949a2cf836c06779be7cc07909e5d134d6d3089ed43
6d6d9ddbe70bd9d609cfd70f0236a2562b596a6744f283c3b3e4c2ae26a686f9
SH256 hash:
abfb9f23683a922c0a219cbc433dd6dd63c5beb9f4dc77bdc9a25a9f3c0a6507
MD5 hash:
0645ff64cbfdd3bf7cdedf1d47ac97b0
SHA1 hash:
bebb908002f27fd9ceed29df5b5b8a1de86253d6
Link:
https://www.unpac.me/results/a40db8d3-262b-4bf0-aece-3b934cc0a707/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/a40db8d3-262b-4bf0-aece-3b934cc0a707/
SH256 hash:
a15521135ce72df5cc2d9a02d558558ee3c38e48025e806173f15488b49034f1
MD5 hash:
2be8e81bfde8abf4bdae8cb44c6cdbe9
SHA1 hash:
611ee1652b4ce5c18f23ae8eebe70726d9f07537
Link:
https://www.unpac.me/results/a40db8d3-262b-4bf0-aece-3b934cc0a707/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.71
Link:
https://yomi.yoroi.company/submissions/a15521135ce72df5cc2d9a02d558558ee3c38e48025e806173f15488b49034f1

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

Executable exe a15521135ce72df5cc2d9a02d558558ee3c38e48025e806173f15488b49034f1

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/250652/

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