MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c900971c1b3ace4fd4cc2d3bed19ae9b71a43b4f32ee8bede727473efc0b27ad. 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 2 File information Comments
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SHA256 hash: c900971c1b3ace4fd4cc2d3bed19ae9b71a43b4f32ee8bede727473efc0b27ad
SHA3-384 hash: 4ef4e039e5941383bb125ef5e95f9df79adc704c5a8eb7ab675596c96cb7457bd4b9e56a5841501effd3f827963a8d46
SHA1 hash: ff921e86cee9a27dafcaf5576f493f067c080360
MD5 hash: f1c41473f0daae85c1d2579ecf345809
humanhash: twelve-south-bulldog-shade
File name:file.exe
Download: download sample
Signature Formbook
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File size:840'192 bytes
First seen:2023-07-25 18:05:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:Rxc2HIcTrGCScqHkwfrlP2zP7LNITSU3:3LHIkrzScmfZP2z/qN3
Threatray 3'227 similar samples on MalwareBazaar
TLSH T10405F12136A9AF57D5BA47F94020733013BEAE9D7039E30A6DC370DA6976F804662F17
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
263
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file.exe
Verdict:
Suspicious activity
Analysis date:
2023-07-25 18:10:37 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/ddda40a0-f083-4317-b6ee-f9cdb060fad7

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/432958/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.738.29184.6847.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c900971c1b3ace4fd4cc2d3bed19ae9b71a43b4f32ee8bede727473efc0b27ad
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7811d34e-7efb-44f4-a579-854c038cbdba
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1279560
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1279560 Sample: file.exe Startdate: 25/07/2023 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 6 other signatures 2->42 10 file.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\Local\...\file.exe.log, ASCII 10->28 dropped 54 Tries to detect virtualization through RDTSC time measurements 10->54 56 Injects a PE file into a foreign processes 10->56 14 file.exe 10->14         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 17 explorer.exe 1 1 14->17 injected process8 dnsIp9 30 www.lovewgfddhz9999266dhz.xyz 17->30 32 www.pwp5v.top 205.164.25.102, 49700, 80 EGIHOSTINGUS United States 17->32 34 3 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 46 Performs DNS queries to domains with low reputation 17->46 21 explorer.exe 17->21         started        signatures10 process11 signatures12 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/c900971c1b3ace4fd4cc2d3bed19ae9b71a43b4f32ee8bede727473efc0b27ad/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2023-07-25 07:10:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
41
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zeajoha3hlhe7vgmfu562gnotny2io2pglxix3phe5dt57ale6wq._file
Verdict:
malicious
Label(s):
formbook
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Similar samples:
067bea125f176d75cabed99b0bc6bd3a3957baf3a361d6d3848911446e48d1b1
Formbook
14ac214aee66557d77577da7211f5fa6476753b38ff8b40738c660a88c8ffd35
Formbook
2a8783a8fa5d2994fdce8d2bce2aeb59434d13534e9f13ccae8de38f72f0798f
Formbook
4339763c2998a0b0a63f0a1e0034decd766d3fc8d3cf35e946a7b12c9e34ab3e
Formbook
5032142ba20b1c3203fb0b6c8c5f6d52c4546b233b3d11b885b4296e4887d6a8
Formbook
512861c49503d13c3c1e7c1fff398054eae819195f839aafd803c853cd25143a
Formbook
7d0802716538acdbba606f1691225b66910af4603aaa096f3a84776c1e5b40d7
Formbook
9cbb812478a909df210b43c05756059fd4d35bebadcd555d265cf29d74fadc45
Formbook
c4333322e47f6528c43a77936dea4bcf9230a3ec68c527d931d3c1c8f6232baf
Formbook
e7f3ea9e207ee0ee8465346b51790d3f781e5b47fdc77f6ce17c2d88292b42d7
Formbook
+ 3'217 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:u1r8 rat spyware stealer trojan
Link:
https://tria.ge/reports/230725-wpqrgaeg99/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
ea614f55d4ae96e21946246af218799362abf3447116ed0b48e1869920772af1
MD5 hash:
cbc19fbf7f5f9b847dc672b95214555b
SHA1 hash:
dc4613a8a81c1860c8f9e5a5740f6a2bf0c1b3db
Detections:
FormBook
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win_formbook_w0
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win_formbook_auto
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win_formbook_g0
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Link:
https://www.unpac.me/results/2e023673-6810-4c9c-8ba5-716db10516ec/
Parent samples :
512861c49503d13c3c1e7c1fff398054eae819195f839aafd803c853cd25143a
c900971c1b3ace4fd4cc2d3bed19ae9b71a43b4f32ee8bede727473efc0b27ad
1efa0c8aacdc1d8cedff1876b0e3434407553a1bcf5b8b4e60c35259f5fbacb1
SH256 hash:
6e381b097722ad0e4484a4a7a809daa0f05124dd316ed1c95a1be2d6a3476dd5
MD5 hash:
afc6c8cb479c6b21f841211b86d3530e
SHA1 hash:
fc3b7501c441e2eb1c85ed220147655185af6016
Link:
https://www.unpac.me/results/2e023673-6810-4c9c-8ba5-716db10516ec/
SH256 hash:
3f68cc843eb3b2a764dc02355e2e3f97dce8f1164d6f18a4f77e850410dfc137
MD5 hash:
60126f10641986bbcefca9ed6159994b
SHA1 hash:
df584155d49b10805f1f0d81a758e98b23990815
Link:
https://www.unpac.me/results/2e023673-6810-4c9c-8ba5-716db10516ec/
SH256 hash:
6a4d237f7e2839303e9f0dfcdfa9a96079e2236158fdac169bfa5882fa74774a
MD5 hash:
7c8856a0f71d352abad7986765587c47
SHA1 hash:
74373f99670fbed905f4c624d4c305bf52d3a75e
Link:
https://www.unpac.me/results/2e023673-6810-4c9c-8ba5-716db10516ec/
SH256 hash:
c900971c1b3ace4fd4cc2d3bed19ae9b71a43b4f32ee8bede727473efc0b27ad
MD5 hash:
f1c41473f0daae85c1d2579ecf345809
SHA1 hash:
ff921e86cee9a27dafcaf5576f493f067c080360
Link:
https://www.unpac.me/results/2e023673-6810-4c9c-8ba5-716db10516ec/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c900971c1b3a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.91
Link:
https://yomi.yoroi.company/submissions/c900971c1b3ace4fd4cc2d3bed19ae9b71a43b4f32ee8bede727473efc0b27ad

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:pe_imphash
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Rule name:Skystars_Malware_Imphash
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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 c900971c1b3ace4fd4cc2d3bed19ae9b71a43b4f32ee8bede727473efc0b27ad

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/432958/

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