MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 794b5731c293822cc916b19f0e7dd93d86b05a58afb7aff39255939953ae17d0. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 794b5731c293822cc916b19f0e7dd93d86b05a58afb7aff39255939953ae17d0
SHA3-384 hash: 13b15a9528814581036aa8757a83b352bf8f0b7b54c958e3e0b11043261d8c2887e89b1671a0b220d4cbcbfb480ec06f
SHA1 hash: 03033ef6fe7d43fdf7d9724f39d1b3d78a3afdbf
MD5 hash: 7ea6a7bf99b41855b2c6fea949016b1f
humanhash: papa-iowa-kentucky-winter
File name:INVOICE-896110-ALRASS.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:605'184 bytes
First seen:2023-09-04 08:57:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'659 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:99/X2xY5u32n5czrfgGS47XMWx/uahMWkdDELm:j/X2KQ2nCHld7MhoMl
Threatray 61 similar samples on MalwareBazaar
TLSH T188D4238A156B071AE09D6FFD9E3942308BF16D69247AF58E4DEE63F264C330252513E3
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 cocaman
Tags:exe FormBook QUOTATION

Intelligence

File Origin
# of uploads :
1
# of downloads :
283
Origin country :
CZ CZ
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
INVOICE-896110-ALRASS.exe
Verdict:
Malicious activity
Analysis date:
2023-09-04 08:58:54 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/b23bf768-1513-4243-9521-476dc233eb00

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/446007/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/64f59c1bc95366b9effe7d7a/reports/31b1d21a-e038-4fb7-a33f-5ebe9e51e23b/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/794b5731c293822cc916b19f0e7dd93d86b05a58afb7aff39255939953ae17d0
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/505dadc3-1655-428e-bea2-4fb20fb4564f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1302750
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Deletes itself after installation
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)
Snort IDS alert for network traffic
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 harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1302750 Sample: INVOICE-896110-ALRASS.exe Startdate: 04/09/2023 Architecture: WINDOWS Score: 100 32 www.sonokiz.xyz 2->32 34 www.qhzsxhn73k.top 2->34 36 2 other IPs or domains 2->36 42 Snort IDS alert for network traffic 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 48 8 other signatures 2->48 10 INVOICE-896110-ALRASS.exe 3 2->10         started        signatures3 process4 process5 12 INVOICE-896110-ALRASS.exe 10->12         started        15 INVOICE-896110-ALRASS.exe 10->15         started        17 INVOICE-896110-ALRASS.exe 10->17         started        signatures6 60 Maps a DLL or memory area into another process 12->60 62 Queues an APC in another process (thread injection) 12->62 19 LdADxadtehfUusbQJA.exe 12->19 injected process7 process8 21 mstsc.exe 13 19->21         started        signatures9 50 Tries to steal Mail credentials (via file / registry access) 21->50 52 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 21->52 54 Tries to harvest and steal browser information (history, passwords, etc) 21->54 56 5 other signatures 21->56 24 explorer.exe 3 1 21->24 injected 28 LdADxadtehfUusbQJA.exe 21->28 injected 30 firefox.exe 21->30         started        process10 dnsIp11 38 www.sonokiz.xyz 162.0.239.145, 49769, 49770, 49771 NAMECHEAP-NETUS Canada 24->38 40 www.local-masterfab.pro 64.225.91.73, 49768, 80 DIGITALOCEAN-ASNUS United States 24->40 58 System process connects to network (likely due to code injection or exploit) 24->58 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/794b5731c293822cc916b19f0e7dd93d86b05a58afb7aff39255939953ae17d0/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2023-09-04 08:21:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pffvomocsobczsiwwgpq47ozhwdlawsyv632744skwjzsu5oc7ia._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
0b6787b9226255086a296198f8075b09bef790ebce89c8b3020f9ca2e3ea859f
Formbook
0be1cd04cb84003839d5438dda8e2c40e89857f5c48300e59cac9db26ae7ebed
Formbook
358659e950dae1b469fca25fb75167cae886174d21a9226fd8081fbd71d5abbc
Formbook
54ec929ab868528d647d285298b5ab71ef9aad83e1a3594b3d13f2a02f127d96
Formbook
66e9b5aad3bc2d59cdabefdfeecff99d0e60fd9d65ae7cd60d8a8db80adf48cc
Formbook
8316df0c425a49849eaf0c55fac307ea3ac82efa3a83b3ea786fd63e8b38b909
Formbook
c0545f16fbbecef4ff1983c05e620651f24c48d3debaf525fd3e057ef688fae4
Formbook
c1a46fa04740b97fb8ffd1a24b00a770dd5ccb929a66583ed48a4ce75da7c175
Formbook
e7c6065d235655ee2fa7871ee73a8d14b4f88b87351de7752a4c9569739b667d
Formbook
+ 51 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/230904-kw5y7afd87/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Checks computer location settings
Unpacked files
SH256 hash:
8b45fc426e77ddd3195a72be5921ebd9afdfa59a256d5afeca7aa9b559472545
MD5 hash:
cddd0d8b849089c7acedd9d9d4d03cac
SHA1 hash:
6cc40a11188cd57765da7ed49ed8900679d93251
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/56d58310-304d-48d2-a036-f35d6b60a36a/
Parent samples :
8316df0c425a49849eaf0c55fac307ea3ac82efa3a83b3ea786fd63e8b38b909
e7c6065d235655ee2fa7871ee73a8d14b4f88b87351de7752a4c9569739b667d
0b6787b9226255086a296198f8075b09bef790ebce89c8b3020f9ca2e3ea859f
c0545f16fbbecef4ff1983c05e620651f24c48d3debaf525fd3e057ef688fae4
794b5731c293822cc916b19f0e7dd93d86b05a58afb7aff39255939953ae17d0
185e9a246303e86f45428ff67d8e44da725dfd3220106e75e38d278a1336a727
84a957af4bee9e5f07b399e5a36ea6b59038e85d3efb2f0f6bd86de787f634ad
e41ce47cf174f8b3f909756c90495e990b4f5550da4bd7e1a6b5ba50ba0ba9e9
SH256 hash:
d2a54851ad1edd06bc3ceab670cd77aa16b0788cbd76d12c9e47892a951cfc8b
MD5 hash:
630dee8d5f38b657a9d3eb023ce44e01
SHA1 hash:
32e2b234b1ea7609d389872ff5ff18d2eb79fa68
Link:
https://www.unpac.me/results/56d58310-304d-48d2-a036-f35d6b60a36a/
SH256 hash:
ad3aa8946e24ca0952e3b4b234bc78fa180191f19cac73405c188b82b605b01c
MD5 hash:
cc0be541e6b2ed93f8cd58ae16f0a4ce
SHA1 hash:
d97ccecb5c5558f0f2e61de2de463986372364f9
Link:
https://www.unpac.me/results/56d58310-304d-48d2-a036-f35d6b60a36a/
SH256 hash:
0e105b75b8d49cf6129af774e9d7e37ac315e6e90d2911d3cc583854482a9e95
MD5 hash:
ac144e03b94b8bbcfa4d8f0d8f8d0dd7
SHA1 hash:
1e955889309d8a230a4ae4779cf6f839ef5f520a
Link:
https://www.unpac.me/results/56d58310-304d-48d2-a036-f35d6b60a36a/
SH256 hash:
0630b864e828fff2d66f33ab7d00fad231df4c00fc0bbad313ee0d12ca503198
MD5 hash:
f559a9abbd849eb977d262d597d6e4fd
SHA1 hash:
0a8769b40b026852690c89b913c2812817ef43c8
Link:
https://www.unpac.me/results/56d58310-304d-48d2-a036-f35d6b60a36a/
Parent samples :
cef72412a1dd9486bae5f7e606d4330660fba98575ba1c939559ccc83536f41a
81ccf158093718305b3499d0f16d8a82bcad69f2740066daca8d5b5ca9979688
SH256 hash:
794b5731c293822cc916b19f0e7dd93d86b05a58afb7aff39255939953ae17d0
MD5 hash:
7ea6a7bf99b41855b2c6fea949016b1f
SHA1 hash:
03033ef6fe7d43fdf7d9724f39d1b3d78a3afdbf
Link:
https://www.unpac.me/results/56d58310-304d-48d2-a036-f35d6b60a36a/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/794b5731c293/report/overview.html
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/794b5731c293822cc916b19f0e7dd93d86b05a58afb7aff39255939953ae17d0

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

zip 6076c4dc06dc2a44378c9f2f90a8433a57f9e03074b85e5b237b26eda34f7473

Formbook

Executable exe 794b5731c293822cc916b19f0e7dd93d86b05a58afb7aff39255939953ae17d0

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 6076c4dc06dc2a44378c9f2f90a8433a57f9e03074b85e5b237b26eda34f7473
Cape
Cape
https://www.capesandbox.com/analysis/446007/
  
Dropped by
MD5 9b31cae1a3bfa5602d93ee2f106869ba

Comments