MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c8135636799971efa2fe543c693f96ab2238d38b140d1da6a07727231161a765. 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: 14


Intelligence 14 IOCs YARA 6 File information Comments
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SHA256 hash: c8135636799971efa2fe543c693f96ab2238d38b140d1da6a07727231161a765
SHA3-384 hash: efb1b91d26832ba923547d80da9b698fa6e7bbb8a4900696f81512b2d592dad67d333a4f064946270d27c4b6dbcedb10
SHA1 hash: a4400e1e8e97fec1a68290b24aea4250189610ef
MD5 hash: fb56fbfa78c904b961a8db42b7ac648d
humanhash: sierra-hotel-timing-idaho
File name:quotation.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:814'592 bytes
First seen:2024-12-03 13:05:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:iNIeecHJa3Javd4xS6a7VrG8nAFsOEXZmyI:sBecHJKavX7ViEXZ7
Threatray 10 similar samples on MalwareBazaar
TLSH T1A905F19C3605B54FC947C6318FA4ED74AA546DEEA70683039AD71EEFF82D856CE040E2
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
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)
Magika pebin
File icon (PE):PE icon
dhash icon e44ad8ccc8a4a0c0 (22 x Formbook, 4 x RemcosRAT, 3 x AgentTesla)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
391
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
quotation.exe
Verdict:
No threats detected
Analysis date:
2024-12-03 13:40:33 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e3ca57e8-d4d7-4ba0-9bf9-7662b178dd91

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Ratx-10038422-0
Create hunting rule

Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=674f033d12e85e185e754ca6
Tags:
virus gates micro
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/674f02501b2b810869e0ebe2/reports/ed37fc19-2628-4e38-a4f6-ffb62a3f4606/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c8135636799971efa2fe543c693f96ab2238d38b140d1da6a07727231161a765
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0599478b-df27-49d4-87fa-092dc28b734f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1567392
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
Machine Learning detection for sample
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)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
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 dnsIp2 2 Behavior Graph ID: 1567392 Sample: quotation.exe Startdate: 03/12/2024 Architecture: WINDOWS Score: 100 30 www.acc888ommodate.xyz 2->30 32 www.gadgetre.info 2->32 34 17 other IPs or domains 2->34 44 Suricata IDS alerts for network traffic 2->44 46 Antivirus detection for URL or domain 2->46 48 Multi AV Scanner detection for submitted file 2->48 52 6 other signatures 2->52 10 quotation.exe 3 2->10         started        signatures3 50 Performs DNS queries to domains with low reputation 30->50 process4 file5 28 C:\Users\user\AppData\...\quotation.exe.log, ASCII 10->28 dropped 13 quotation.exe 10->13         started        process6 signatures7 64 Maps a DLL or memory area into another process 13->64 16 gkTgnrvdOG.exe 13->16 injected process8 signatures9 42 Found direct / indirect Syscall (likely to bypass EDR) 16->42 19 SearchProtocolHost.exe 13 16->19         started        process10 signatures11 54 Tries to steal Mail credentials (via file / registry access) 19->54 56 Tries to harvest and steal browser information (history, passwords, etc) 19->56 58 Modifies the context of a thread in another process (thread injection) 19->58 60 3 other signatures 19->60 22 gkTgnrvdOG.exe 19->22 injected 26 firefox.exe 19->26         started        process12 dnsIp13 36 taxitayninh365.site 103.75.185.22, 50010, 50011, 50012 VNBOOKING-AS-VNVietNamBookingcorporationVN Viet Nam 22->36 38 carsten.studio 217.160.0.200, 50022, 50023, 50024 ONEANDONE-ASBrauerstrasse48DE Germany 22->38 40 11 other IPs or domains 22->40 62 Found direct / indirect Syscall (likely to bypass EDR) 22->62 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c8135636799971efa2fe543c693f96ab2238d38b140d1da6a07727231161a765
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c8135636799971efa2fe543c693f96ab2238d38b140d1da6a07727231161a765/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2024-12-03 07:25:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
24 of 37 (64.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zajvmntztfy67ix6kq6gsp4wvmrdru4lcqgr3jvao4tsgelbu5sq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
unknown_loader_037
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
51f793789b534af84e377bfa1d9686038108885b89f05e3966e34ec31027f4e4
Formbook
56074e8ad9bd7ee8b56c2bbd5c826c7bbcb1819dd0145c7a2733b8ce3d78938e
Formbook
b04f5f1a6341ed5c5a7d3ba3bfc0fb649d3f036ac5cbd80a2e60efd4b2f50450
Formbook
c5f3533849c988dc9812857c7a8e6359d82cf650955eec6d14661426e62bbde1
Formbook
c8135636799971efa2fe543c693f96ab2238d38b140d1da6a07727231161a765
Formbook
e6d7aab1f11c4a43a5291bd51e4aad8deee26333be85454161f6f85660433c4a
Formbook
error
Formbook
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/241203-qb3k8awqaw/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/c95ba55a-2aeb-4cc4-b47d-a374b7ed22bd
Unpacked files
SH256 hash:
060aa7035a97fa517fdd6e28a42cd6834fe20c4a814b2a00faa93b4b5307b68e
MD5 hash:
8fb97d97eea5c555effa612400554ae0
SHA1 hash:
352c47d36008ec1ef52f4dfb410b202cb7d3dd86
Link:
https://www.unpac.me/results/f441797b-1a5a-4f1a-b787-bf85de28c8b5/
SH256 hash:
8138c00c120ddf91ca2741bf7e21bf722c644f9e9ea3d771e3bd093c423d4652
MD5 hash:
9e009e1920b0543559fcfb6bf80cd96c
SHA1 hash:
dedf7d05d9cb1be7f0d38e14e6ba83a6b116a560
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/f441797b-1a5a-4f1a-b787-bf85de28c8b5/
SH256 hash:
716a5131bd5886d87bbe81648830ce61b345dd89df3e78ad84b1a9b994654d8e
MD5 hash:
608e824f6d7d8db19f882687324ef5b0
SHA1 hash:
4b68d049df1b43db283a77cb2e57cea03d407a7d
Link:
https://www.unpac.me/results/f441797b-1a5a-4f1a-b787-bf85de28c8b5/
SH256 hash:
acf09c80699691d3a6a8d52577d06a7054c1bda1953a55527251e92e15ba037f
MD5 hash:
69473b5123488cff4aae599aa14eb3a4
SHA1 hash:
1d3562fd2fb55582cb97441b9f01065dd80373fc
Link:
https://www.unpac.me/results/f441797b-1a5a-4f1a-b787-bf85de28c8b5/
SH256 hash:
c8135636799971efa2fe543c693f96ab2238d38b140d1da6a07727231161a765
MD5 hash:
fb56fbfa78c904b961a8db42b7ac648d
SHA1 hash:
a4400e1e8e97fec1a68290b24aea4250189610ef
Link:
https://www.unpac.me/results/f441797b-1a5a-4f1a-b787-bf85de28c8b5/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c81356367999/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/c8135636799971efa2fe543c693f96ab2238d38b140d1da6a07727231161a765

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: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
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

The table below shows additional information about this malware sample such as delivery method and external references.

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 (HIGH_ENTROPY_VA)high

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