MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83b760b0b764a209333a2b903015ff3f6df831faf20be20b836563c54e3370b1. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83b760b0b764a209333a2b903015ff3f6df831faf20be20b836563c54e3370b1
SHA3-384 hash: 1eab3bbad126d09bfd87a3392935791b6d4beaeab4b71b46b05880ce508b4805d3b3c9738b67b2241c603c4037665373
SHA1 hash: 030176b42aac8f2fd5e0358e817491d3c334a686
MD5 hash: 0c0b6ed60e0309998da4ae71469f1d84
humanhash: nineteen-grey-foxtrot-yankee
File name:Documents.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:929'800 bytes
First seen:2024-11-28 08:10:46 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:4t2xjPLCnYn28/zBe7Rw4/apNbasfpKHSnfry:4AcnY28/9MRzmskpKHSnfW
Threatray 988 similar samples on MalwareBazaar
TLSH T186151260119BE901C8D10B7049A3D3F59B709DC9F921C30BABEAAFFBBC7615629543E4
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 0048496961686800 (5 x Formbook, 2 x RemcosRAT, 1 x Loki)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
401
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Documents.exe
Verdict:
Malicious activity
Analysis date:
2024-11-28 08:28:17 UTC
Tags:
netreactor
Link:
https://app.any.run/tasks/ee192f66-c222-4c99-9e8b-d3b1a7e1caa4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.23310.26360.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=674826e4b31374f098355e33
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a file
Forced shutdown of a system process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/6748259afa3557b45ebe1896/reports/c163e80a-261b-43a4-b0f0-6e8c18c31a38/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/83b760b0b764a209333a2b903015ff3f6df831faf20be20b836563c54e3370b1
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/87f734f0-bd5f-42c8-9b41-8523af1cb166
Result
Threat name:
FormBook, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1564384
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1564384 Sample: Documents.exe Startdate: 28/11/2024 Architecture: WINDOWS Score: 100 59 www.lingdianyun29.xyz 2->59 61 www.6822662.xyz 2->61 63 16 other IPs or domains 2->63 75 Suricata IDS alerts for network traffic 2->75 77 Sigma detected: Scheduled temp file as task from temp location 2->77 79 Multi AV Scanner detection for submitted file 2->79 83 9 other signatures 2->83 10 Documents.exe 7 2->10         started        14 uFEeKIucsX.exe 5 2->14         started        signatures3 81 Performs DNS queries to domains with low reputation 61->81 process4 file5 51 C:\Users\user\AppData\...\uFEeKIucsX.exe, PE32 10->51 dropped 53 C:\Users\...\uFEeKIucsX.exe:Zone.Identifier, ASCII 10->53 dropped 55 C:\Users\user\AppData\Local\...\tmp2505.tmp, XML 10->55 dropped 57 C:\Users\user\AppData\...\Documents.exe.log, ASCII 10->57 dropped 93 Uses schtasks.exe or at.exe to add and modify task schedules 10->93 95 Writes to foreign memory regions 10->95 97 Allocates memory in foreign processes 10->97 103 2 other signatures 10->103 16 RegSvcs.exe 10->16         started        19 powershell.exe 23 10->19         started        21 powershell.exe 23 10->21         started        23 schtasks.exe 1 10->23         started        99 Multi AV Scanner detection for dropped file 14->99 101 Machine Learning detection for dropped file 14->101 25 schtasks.exe 1 14->25         started        27 RegSvcs.exe 14->27         started        signatures6 process7 signatures8 71 Maps a DLL or memory area into another process 16->71 29 vWFGbvOdxI.exe 16->29 injected 73 Loading BitLocker PowerShell Module 19->73 32 WmiPrvSE.exe 19->32         started        34 conhost.exe 19->34         started        36 conhost.exe 21->36         started        38 conhost.exe 23->38         started        40 conhost.exe 25->40         started        process9 signatures10 105 Found direct / indirect Syscall (likely to bypass EDR) 29->105 42 systray.exe 13 29->42         started        process11 signatures12 85 Tries to steal Mail credentials (via file / registry access) 42->85 87 Tries to harvest and steal browser information (history, passwords, etc) 42->87 89 Modifies the context of a thread in another process (thread injection) 42->89 91 3 other signatures 42->91 45 vWFGbvOdxI.exe 42->45 injected 49 firefox.exe 42->49         started        process13 dnsIp14 65 hayaniya.org 192.185.147.100, 49882, 49888, 49894 OIS1US United States 45->65 67 www.learnnow.info 199.192.23.123, 50015, 50016, 50017 NAMECHEAP-NETUS United States 45->67 69 11 other IPs or domains 45->69 107 Found direct / indirect Syscall (likely to bypass EDR) 45->107 signatures15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/83b760b0b764a209333a2b903015ff3f6df831faf20be20b836563c54e3370b1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/83b760b0b764a209333a2b903015ff3f6df831faf20be20b836563c54e3370b1/
Threat name:
ByteCode-MSIL.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-11-28 04:09:34 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qo3wbmfxmsrasmz2foidafp7h5w7qmp26if6ec4dmvr4ktrtocyq._file
Verdict:
malicious
Label(s):
unknown_loader_037
Create hunting rule
Similar samples:
0220e969f9fd1e5cadd143f94dc7fdfe26971096227ff4005a8bf96bb316c4c2
Formbook
251f9b9b5d35ad3ca96da825cea2a7b95f97872a5c6994a9123e203d41093a87
Formbook
2c67cd53627199ab4741a3fe73a317b1f91fd46544e06ed251b8ab8b444170a8
Formbook
43e710d54cc34ae668a10b0ce9e89fd4f7d147cef34c7d44275ec96be9cfb901
Formbook
d576e1f7fda1be65966818b172595c210754ff21fc729113c5fa9427143d753e
Formbook
error
Formbook
+ 978 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution
Link:
https://tria.ge/reports/241128-j29nws1nex/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/8a7b1458-9dc0-4a08-b298-2a735cbd3c6f
Unpacked files
SH256 hash:
f434022410d4a4a16145b73240c8f58d342b23d12edffd34123b747486ad3894
MD5 hash:
51a65efc050e7df2d7da42213c3b6d20
SHA1 hash:
9dcad16d81e7efd3ac7ba0b3f1bfa2ed88390f2a
Link:
https://www.unpac.me/results/03630242-0f1d-4310-a023-2b29c0f3ab4a/
SH256 hash:
bae39e05ec09e55521bb35747ea7892afe1cc909e14eb781f41e599aeff420f2
MD5 hash:
6ad2b1d53ead1e02acec0cf93e3eebc7
SHA1 hash:
e82cc0faa2ffaded2ee5c0a710bfb984696d4aec
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/03630242-0f1d-4310-a023-2b29c0f3ab4a/
SH256 hash:
fe7739c7141e1d374a8a3d10b158c2417a7dc3f474143a59fefee940abc8b3cf
MD5 hash:
f17878a503719c5f551b43ce85a83bea
SHA1 hash:
d32a2695564662ad43686cb1e4878e3ec2dc3568
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/03630242-0f1d-4310-a023-2b29c0f3ab4a/
Parent samples :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 hash:
4fa35aecadc7975f22b1e118ea0972270889b16919bea52ded8e07835cc82a3d
MD5 hash:
29a12fbfa4050c1fc62155fad60255bc
SHA1 hash:
21fd6638b6475124bf2eddc7eac2ed98a5bf3094
Link:
https://www.unpac.me/results/03630242-0f1d-4310-a023-2b29c0f3ab4a/
SH256 hash:
83b760b0b764a209333a2b903015ff3f6df831faf20be20b836563c54e3370b1
MD5 hash:
0c0b6ed60e0309998da4ae71469f1d84
SHA1 hash:
030176b42aac8f2fd5e0358e817491d3c334a686
Link:
https://www.unpac.me/results/03630242-0f1d-4310-a023-2b29c0f3ab4a/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/83b760b0b764/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

File information

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

Malspam

Formbook

Executable exe 83b760b0b764a209333a2b903015ff3f6df831faf20be20b836563c54e3370b1

(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 (HIGH_ENTROPY_VA)high

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