MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8289bcb3791844b6a67a760ef22dabc499f9413ba473ce1d4a0dc720a237951c. 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: 15


Intelligence 15 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8289bcb3791844b6a67a760ef22dabc499f9413ba473ce1d4a0dc720a237951c
SHA3-384 hash: a8a839a9133421d350fbbe6f614657f64fab3eb4cfef9665b4f79b48e07802d2f8de2160ba93444f7136d4d2ad4c7f72
SHA1 hash: 7cdfd1a3ac017aa55eeb8ff31c3ff7a200a7e5d2
MD5 hash: b886d943d4a8d6e4cbc74fa4bc7705b7
humanhash: nebraska-berlin-california-romeo
File name:NHhH776.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:334'336 bytes
First seen:2024-04-29 09:26:38 UTC
Last seen:2024-04-29 10:29:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:9/ZGCv4Ae5WNnlQJZZ7tFW9VpnqpJH9DTVUEp6wsErKXkt22/B3KsXqS+R:9IB/4Nn6J3tQ9Vdqp7zKUpB3G
TLSH T10864225E7DCD8693C72C00792EF293119E38819C8855C6F6DEE1B2F5BD0A7610983A6F
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
316
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
8289bcb3791844b6a67a760ef22dabc499f9413ba473ce1d4a0dc720a237951c.exe
Verdict:
Malicious activity
Analysis date:
2024-04-29 09:49:00 UTC
Tags:
formbook stealer spyware
Link:
https://app.any.run/tasks/04c1a1ee-fb98-4062-81b8-5ddbbb8c901e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file
Сreating synchronization primitives
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
confuserex packed packed
Link:
https://www.filescan.io/uploads/662f67f775339da04fa64af8/reports/2565e6b7-132b-462a-84db-600db1bae54e/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/8289bcb3791844b6a67a760ef22dabc499f9413ba473ce1d4a0dc720a237951c
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:
Malicious Packer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/62d5ec38-b02f-479f-b343-84f07e95c86c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1433224
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Windows Update Standalone Installer command line found (may be used to bypass UAC)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1433224 Sample: NHhH776.exe Startdate: 29/04/2024 Architecture: WINDOWS Score: 100 42 www.yamegoart.com 2->42 44 www.wlscommunications.com 2->44 46 27 other IPs or domains 2->46 64 Snort IDS alert for network traffic 2->64 66 Multi AV Scanner detection for domain / URL 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 7 other signatures 2->70 10 NHhH776.exe 1 2->10         started        13 chrome.exe 1 2->13         started        16 chrome.exe 2->16         started        signatures3 process4 dnsIp5 74 Writes to foreign memory regions 10->74 76 Allocates memory in foreign processes 10->76 78 Injects a PE file into a foreign processes 10->78 18 CasPol.exe 10->18         started        21 CasPol.exe 10->21         started        56 192.168.2.4, 138, 443, 49672 unknown unknown 13->56 58 192.168.2.11 unknown unknown 13->58 60 5 other IPs or domains 13->60 23 chrome.exe 13->23         started        26 chrome.exe 16->26         started        signatures6 process7 dnsIp8 62 Maps a DLL or memory area into another process 18->62 28 GAFGosVuBzptwniuxpERzj.exe 18->28 injected 54 www.google.com 142.250.190.68, 443, 49731, 49732 GOOGLEUS United States 23->54 signatures9 process10 signatures11 80 Windows Update Standalone Installer command line found (may be used to bypass UAC) 28->80 82 Found direct / indirect Syscall (likely to bypass EDR) 28->82 31 proquota.exe 13 28->31         started        34 wusa.exe 28->34         started        process12 signatures13 84 Tries to steal Mail credentials (via file / registry access) 31->84 86 Tries to harvest and steal browser information (history, passwords, etc) 31->86 88 Modifies the context of a thread in another process (thread injection) 31->88 90 2 other signatures 31->90 36 GAFGosVuBzptwniuxpERzj.exe 31->36 injected 40 firefox.exe 31->40         started        process14 dnsIp15 48 www.bulkfun.top 203.161.46.103, 49777, 49778, 49779 VNPT-AS-VNVNPTCorpVN Malaysia 36->48 50 lenslaser.com 162.241.216.140, 49792, 49793, 49794 UNIFIEDLAYER-AS-1US United States 36->50 52 13 other IPs or domains 36->52 72 Found direct / indirect Syscall (likely to bypass EDR) 36->72 signatures16
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8289bcb3791844b6a67a760ef22dabc499f9413ba473ce1d4a0dc720a237951c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8289bcb3791844b6a67a760ef22dabc499f9413ba473ce1d4a0dc720a237951c/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-04-26 00:28:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
21 of 23 (91.30%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qke3zm3zdbclnjt2oyhpelnlysm7sqj3urz44hkkbxdsbirxsuoa._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/240429-ler7fafe91/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
5b63ae729ae24eb04b3b4a26af8d9800a9a2a5bc4156efc0259d06a126b25ae8
MD5 hash:
a3e972e4cfb2cae1f06abbaad586c88a
SHA1 hash:
09f7917e4dbd58a47ce45867dcb810fbcb349ced
Link:
https://www.unpac.me/results/10903a8f-ca8b-4932-b5d8-1e4558a01b63/
SH256 hash:
06acf27d1ccab01b6f0cc3f8fd4c17e29c534292494ad9aeaffaf6c55a9504e5
MD5 hash:
655d12178996fa2e84348d53575a2c21
SHA1 hash:
ebe37cefd922ad63f1abcf045bfd4b1e4897670e
Detections:
INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
Link:
https://www.unpac.me/results/10903a8f-ca8b-4932-b5d8-1e4558a01b63/
Parent samples :
8289bcb3791844b6a67a760ef22dabc499f9413ba473ce1d4a0dc720a237951c
44d184f1ca1ad12f5fd6063df28aa5e30627c7b9d138f54ba6bbd4c896fa14c5
d6514eed7fd7242c429612acedbc29e049b489dbaeabf6ebfc78b3526f267013
SH256 hash:
8289bcb3791844b6a67a760ef22dabc499f9413ba473ce1d4a0dc720a237951c
MD5 hash:
b886d943d4a8d6e4cbc74fa4bc7705b7
SHA1 hash:
7cdfd1a3ac017aa55eeb8ff31c3ff7a200a7e5d2
Detections:
INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
Link:
https://www.unpac.me/results/10903a8f-ca8b-4932-b5d8-1e4558a01b63/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8289bcb37918/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8289bcb3791844b6a67a760ef22dabc499f9413ba473ce1d4a0dc720a237951c

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_EXE_Packed_ConfuserEx
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
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

Executable exe 8289bcb3791844b6a67a760ef22dabc499f9413ba473ce1d4a0dc720a237951c

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

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