MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1c5b8de95ee26292b98a75a49159cd172788d3402330cd72bfac35b0fa29f51f. 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: 9


Intelligence 9 IOCs YARA 6 File information Comments
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SHA256 hash: 1c5b8de95ee26292b98a75a49159cd172788d3402330cd72bfac35b0fa29f51f
SHA3-384 hash: f7512ee5002c9c1fa7c548efd9daf44d2087298811dedb13f3f275bfdbb1427ca52ee6625608d08ca8fec20b599fbc9e
SHA1 hash: f388852a138f9b2dd8b731a98df42b33ed702927
MD5 hash: 1a460c017f4c0886e6410c61b9bf5145
humanhash: kansas-virginia-mockingbird-pip
File name:1a460c017f4c0886e6410c61b9bf5145.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:977'408 bytes
First seen:2022-04-07 08:19:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 24576:MY3iEPWSifHY8YqC1akZfAG5AmmoEUXbgj:9yEObY4roEUC
TLSH T10B257B6C36EE1F94DD5B733283DFC4E9B136205196AAB938BD8D768940A1340AFF3215
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
256
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1a460c017f4c0886e6410c61b9bf5145.exe
Verdict:
Suspicious activity
Analysis date:
2022-04-07 10:35:13 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/0e8da380-1ef5-42c3-9551-77fba88253f0

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/261653/
Detection(s):
SecuriteInfo.com.INDICATOR_SUSPICIOUS_EXE_Embedded_Gzip_B64Encoded_File.11031.16549.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Adding an access-denied ACE
Launching a process
Сreating synchronization primitives
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
dotnet.exe obfuscated packed
Link:
https://www.filescan.io/uploads/624e9eb8bbd90911a28daf24/reports/a71d4f4b-2c08-48cb-8ae6-ce208187693b/overview
Result
Verdict:
UNKNOWN
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/c9dd626a-1eb3-493b-a9dd-ff21fb6aa4aa
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/972172
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Found malware configuration
Injects a PE file into a foreign processes
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 604658 Sample: hQJE1UdbX2.exe Startdate: 07/04/2022 Architecture: WINDOWS Score: 100 30 www.bjzsdh.com 2->30 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Yara detected UAC Bypass using CMSTP 2->42 44 8 other signatures 2->44 10 hQJE1UdbX2.exe 1 2->10         started        13 explorer.exe 3 145 2->13         started        signatures3 process4 signatures5 46 Writes to foreign memory regions 10->46 48 Allocates memory in foreign processes 10->48 50 Injects a PE file into a foreign processes 10->50 15 perfhost.exe 10->15         started        process6 signatures7 52 Modifies the context of a thread in another process (thread injection) 15->52 54 Maps a DLL or memory area into another process 15->54 56 Sample uses process hollowing technique 15->56 58 2 other signatures 15->58 18 svchost.exe 15->18         started        21 explorer.exe 1 151 15->21         started        24 explorer.exe 15->24 injected process8 dnsIp9 34 Maps a DLL or memory area into another process 18->34 36 Tries to detect virtualization through RDTSC time measurements 18->36 26 cmd.exe 18->26         started        32 192.168.2.1 unknown unknown 21->32 signatures10 process11 process12 28 conhost.exe 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1c5b8de95ee26292b98a75a49159cd172788d3402330cd72bfac35b0fa29f51f/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-07 08:19:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:p8mc loader rat
Link:
https://tria.ge/reports/220407-j8er4adfg7/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Unpacked files
SH256 hash:
1c5b8de95ee26292b98a75a49159cd172788d3402330cd72bfac35b0fa29f51f
MD5 hash:
1a460c017f4c0886e6410c61b9bf5145
SHA1 hash:
f388852a138f9b2dd8b731a98df42b33ed702927
Link:
https://www.unpac.me/results/2b9f8b52-6d48-4c27-a818-b9176b78dcb5/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/1c5b8de95ee2/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/1c5b8de95ee26292b98a75a49159cd172788d3402330cd72bfac35b0fa29f51f

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:BlackGuard_Rule
Create hunting rule
Author:Jiho Kim
Description:Yara rule for BlackGuarad Stealer v1.0 - v3.0
Reference:https://www.virustotal.com/gui/file/67843d45ba538eca29c63c3259d697f7e2ba84a3da941295b9207cdb01c85b71/detection
Rule name:INDICATOR_SUSPICIOUS_EXE_Embedded_Gzip_B64Encoded_File
Create hunting rule
Author:ditekSHen
Description:Detects executables containing bas64 encoded gzip files
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Web download

Formbook

Executable exe 1c5b8de95ee26292b98a75a49159cd172788d3402330cd72bfac35b0fa29f51f

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2134277/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/261653/

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