MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4588c6ac02ddd81f8315af2307ec516f58400c555ecd74944a77964fbdd992c1. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4588c6ac02ddd81f8315af2307ec516f58400c555ecd74944a77964fbdd992c1
SHA3-384 hash: 151f91ffa0d98a3ab696b92cbd53b60bd9756554d4ff71d59257237d980dcfed8af1f15d3ff6762798e81253274f0be6
SHA1 hash: b863f40e4470377608d5520626b9c009727c50b7
MD5 hash: d18f7d5b06eb88a6be5bfa39f6aa3cfa
humanhash: salami-south-delta-stairway
File name:Proforma Invoice_xlsx.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:599'040 bytes
First seen:2023-08-18 06:54:58 UTC
Last seen:2023-08-18 08:34:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:ah+aSoDl+CnzOTA9mecfFJrAObz1EEzaMDsqSN7eSJ4qjOujuKrCpCk:seNtfdznaosL9J4unuQCp
Threatray 3'744 similar samples on MalwareBazaar
TLSH T11BD41230717D6B1AE47A87F60B21954007BB6A3B3572E70C8DD1B8DB696AF804E40F67
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
332
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Proforma Invoice_xlsx.exe
Verdict:
Suspicious activity
Analysis date:
2023-08-18 06:58:54 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/796f8812-81a2-40d1-92e3-058b21ef4ae7

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/443419/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Restart of the analyzed sample
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/64df15c89489ac1ead376a9e/reports/2809296e-4400-4ccc-a1a3-4092b56ab75e/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4588c6ac02ddd81f8315af2307ec516f58400c555ecd74944a77964fbdd992c1
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/029bc6f1-85b7-471d-8296-c0ec0f9b70e8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1293265
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1293265 Sample: Proforma_Invoice_xlsx.exe Startdate: 18/08/2023 Architecture: WINDOWS Score: 100 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 5 other signatures 2->45 9 Proforma_Invoice_xlsx.exe 3 2->9         started        process3 process4 11 Proforma_Invoice_xlsx.exe 9->11         started        signatures5 51 Maps a DLL or memory area into another process 11->51 53 Queues an APC in another process (thread injection) 11->53 14 PKpDIqWnHjxoLbO.exe 11->14 injected process6 process7 16 svchost.exe 13 14->16         started        signatures8 31 Tries to steal Mail credentials (via file / registry access) 16->31 33 Tries to harvest and steal browser information (history, passwords, etc) 16->33 35 Modifies the context of a thread in another process (thread injection) 16->35 37 Maps a DLL or memory area into another process 16->37 19 explorer.exe 5 1 16->19 injected 23 PKpDIqWnHjxoLbO.exe 16->23 injected process9 dnsIp10 25 www.usxqe6.cfd 142.4.124.174, 80 PEGTECHINCUS United States 19->25 27 www.aquatic-organisms.info 199.59.243.224, 49736, 80 BODIS-NJUS United States 19->27 29 4 other IPs or domains 19->29 47 System process connects to network (likely due to code injection or exploit) 19->47 49 Performs DNS queries to domains with low reputation 19->49 signatures11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4588c6ac02ddd81f8315af2307ec516f58400c555ecd74944a77964fbdd992c1/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-08-17 06:07:40 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=iwemnlac3xmb7ayvv4rqp3crn5meadcvl3gxjfcko6le7pozslaq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
131c69adaff732d878e0396149be53da15e8e155daafe995259385c6c28f605b
Formbook
2b33fca6ad1c4aeccf99eb4fd10ebdd20a00e2889769a1cf34f18d905504d082
Formbook
3fc5cc5b1cbf56ae33c6bc87d39c58a0e034f21ddb7c999a7d505b0044b2e85f
Formbook
50ecc3b01ef9acca243b41728e62bec369d80da286281895cf3c4aadd6a1e444
Formbook
66e9b5aad3bc2d59cdabefdfeecff99d0e60fd9d65ae7cd60d8a8db80adf48cc
Formbook
74eb5168cf1f711833750d0e0f5a25a97cceda943944da21ecc8f1b697ab4e43
Formbook
8316df0c425a49849eaf0c55fac307ea3ac82efa3a83b3ea786fd63e8b38b909
Formbook
c57dc032205e3bcbf86a8dc6053377976c6acc015a837fdb1c30f6ec8d37ab01
Formbook
ccc8ed7866ebf89380c45861e50f095db3acf900fa4cf797e1a5de78cf6051aa
Formbook
d54197de152cea04b823618588d90e7462b78e11602a9eb5c425ce8db7057a80
Formbook
+ 3'734 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/230818-hpsdeahe4x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
4949e7d1f7eb837cfcbd0bbc8bb4a2a8fc9831a5b4e2d8408cb526541836a60a
MD5 hash:
d2dc13318d650674a6502b5b1f9d6c52
SHA1 hash:
3e2b5248d34d7f3a107f5bfc0c05ad352ffc60cd
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/feebc64e-ec86-4960-9c86-ab8013d29e47/
Parent samples :
4588c6ac02ddd81f8315af2307ec516f58400c555ecd74944a77964fbdd992c1
c1d19cee2a05f48cedd6f1f7aa6eec9e27c00cedb7135d0187200b030b302c6d
8a74737cd563828a070e74b5fa4af0eefc7a98cf8b52fcc0ee5db3c83a2d9cb0
SH256 hash:
070c57cdaca772c0a5d715a3ab4f0a998300c928a246b1f4c6b5361cf37fb5ab
MD5 hash:
cb53137e28f4435b25d1599935626614
SHA1 hash:
4c2845bc43667570b43f1dc7f33b7b516ff060cc
Link:
https://www.unpac.me/results/feebc64e-ec86-4960-9c86-ab8013d29e47/
SH256 hash:
5435fbae7c18c37acf9be1ee9aa947829a5e6b8378ab48d1c640332e73b07f23
MD5 hash:
4e2d5a256e0b157942804d514696e939
SHA1 hash:
4ebe049ebde63265986188c283e32c4804a6deb8
Link:
https://www.unpac.me/results/feebc64e-ec86-4960-9c86-ab8013d29e47/
SH256 hash:
b26a7e88c2fc5a6dbf3e1f5d8ac59c4579b3b9047f462c5cb7ee79548fa18da9
MD5 hash:
06dc1333af7361fb9ebebe5c4dbe58e4
SHA1 hash:
1adadf881904c5370e96c0a566085cf3c83ca8d0
Link:
https://www.unpac.me/results/feebc64e-ec86-4960-9c86-ab8013d29e47/
SH256 hash:
598a766b26fc39c1092e2f20cee1f42df6d6049d618ac5d4d331c646ab6a8b47
MD5 hash:
00c960e10d544bd0961a993c3c6dbbe5
SHA1 hash:
04018db21d1b12800f1bc413b90ccb3264955bcb
Link:
https://www.unpac.me/results/feebc64e-ec86-4960-9c86-ab8013d29e47/
SH256 hash:
4588c6ac02ddd81f8315af2307ec516f58400c555ecd74944a77964fbdd992c1
MD5 hash:
d18f7d5b06eb88a6be5bfa39f6aa3cfa
SHA1 hash:
b863f40e4470377608d5520626b9c009727c50b7
Link:
https://www.unpac.me/results/feebc64e-ec86-4960-9c86-ab8013d29e47/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4588c6ac02ddd81f8315af2307ec516f58400c555ecd74944a77964fbdd992c1

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:NET
Create hunting rule
Author:malware-lu
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

rar 052b4d533242ce95c966f10dd14c3c8105cfe3cc0f5ea7dd851443c4079f5a21

Formbook

Executable exe 4588c6ac02ddd81f8315af2307ec516f58400c555ecd74944a77964fbdd992c1

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/443419/
  
Dropped by
SHA256 052b4d533242ce95c966f10dd14c3c8105cfe3cc0f5ea7dd851443c4079f5a21
  
Dropped by
MD5 25fdb64c42d6f95911ecad2ca0ac5b30

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