MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c92b39496a1f938d9c16ad3e1a7948b48923fd028e23a422c5bf8f0b7e1138b. 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: 19


Intelligence 19 IOCs YARA 5 File information Comments
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SHA256 hash: 8c92b39496a1f938d9c16ad3e1a7948b48923fd028e23a422c5bf8f0b7e1138b
SHA3-384 hash: 81dcd5048cd223e984c3ab5646a377ccc336ea09239d4941027559e87ee7ef5b00b52281812fc655f9aadfc82e07b195
SHA1 hash: a8a949da0262c8165e52fd84276b0f299a86db2b
MD5 hash: 1965f06fb4c6e169c7014c90c5b93199
humanhash: south-wisconsin-may-pluto
File name:Ii4XtPGi5n3AWmt.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:705'536 bytes
First seen:2024-08-28 14:56:14 UTC
Last seen:2024-08-28 15:31:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:z4UkfadvMq2bjiwAszlTRPipvBjxOqEEtMcLsfSbASQi8N0DjmEuv3/s0z3/rO:EUjVKmw5TZgkItMcLsfSbMqLwPb/r
TLSH T186E422895ABAAF33C5FE83F1D041145A03F4DC54A062E7772FC650E26F6978089C7A6B
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)
Magika pebin
File icon (PE):PE icon
dhash icon 00e8f0d4ccc0cc00 (4 x Formbook, 2 x SnakeKeylogger, 1 x Loki)
Reporter malwarelabnet
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
361
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Ii4XtPGi5n3AWmt.exe
Verdict:
Malicious activity
Analysis date:
2024-08-28 15:00:10 UTC
Tags:
formbook xloader stealer
Link:
https://app.any.run/tasks/6215d299-5fcc-45e7-b2c2-7c62b5c631be

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.6120.23521.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66cf3ac0fe69a9e56049bce7
Tags:
Stealth Swotter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/66cf3ac05959a837dd11cdbe/reports/0be25fa5-3509-435a-b087-9360b13a781f/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/8c92b39496a1f938d9c16ad3e1a7948b48923fd028e23a422c5bf8f0b7e1138b
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/4949f194-7e03-4151-8c09-55af634d591e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1500569
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
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)
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1500569 Sample: Ii4XtPGi5n3AWmt.exe Startdate: 28/08/2024 Architecture: WINDOWS Score: 100 35 www.ookoutcapstone.xyz 2->35 37 www.harkclothingdesigns.xyz 2->37 39 10 other IPs or domains 2->39 43 Suricata IDS alerts for network traffic 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 51 9 other signatures 2->51 11 Ii4XtPGi5n3AWmt.exe 3 2->11         started        signatures3 49 Performs DNS queries to domains with low reputation 37->49 process4 file5 33 C:\Users\user\...\Ii4XtPGi5n3AWmt.exe.log, ASCII 11->33 dropped 63 Tries to detect virtualization through RDTSC time measurements 11->63 65 Injects a PE file into a foreign processes 11->65 67 Switches to a custom stack to bypass stack traces 11->67 15 Ii4XtPGi5n3AWmt.exe 11->15         started        signatures6 process7 signatures8 69 Modifies the context of a thread in another process (thread injection) 15->69 71 Maps a DLL or memory area into another process 15->71 73 Sample uses process hollowing technique 15->73 75 2 other signatures 15->75 18 explorer.exe 62 1 15->18 injected process9 dnsIp10 41 77980.bodis.com 199.59.243.226, 49712, 80 BODIS-NJUS United States 18->41 53 System process connects to network (likely due to code injection or exploit) 18->53 22 systray.exe 18->22         started        25 autofmt.exe 18->25         started        27 autofmt.exe 18->27         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 61 Switches to a custom stack to bypass stack traces 22->61 29 cmd.exe 1 22->29         started        process14 process15 31 conhost.exe 29->31         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8c92b39496a1f938d9c16ad3e1a7948b48923fd028e23a422c5bf8f0b7e1138b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8c92b39496a1f938d9c16ad3e1a7948b48923fd028e23a422c5bf8f0b7e1138b/
Threat name:
Win32.Backdoor.FormBook
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Status:
Malicious
First seen:
2024-08-28 14:57:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rsjlhfewuh4trwobnlj6dj4urnejep6qfdrduqrmlp4pbn7bcofq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:d16h discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/240828-sbkrhsvcll/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6a552f91-65a1-469b-b602-3d3032432d4d
Unpacked files
SH256 hash:
4cd17fb56e2098be919e5190aad403b0ef40eb3df5ea756d3e50c0706aa230ce
MD5 hash:
b364aa1dd34d1fe2d21b5f4e8018a300
SHA1 hash:
3ce021f11b4b0166c1e7d7873f7a1e3988b6f4d9
Detections:
FormBook
Create hunting rule
win_formbook_g0
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win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/fdfe3391-febb-49fa-ba0a-bbcb7a2aafde/
Parent samples :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 hash:
4f605be2c67eb77a151d4b15cce338a4b48bdc9664368585c8c54a4e58270901
MD5 hash:
4e5511f82413a78a7972bacaed0f402f
SHA1 hash:
9df447d3448b8ac535279aba0a7af1d1a075fcd3
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/fdfe3391-febb-49fa-ba0a-bbcb7a2aafde/
SH256 hash:
f8af12c897d74dd3a634e4089467ff9809835b951b2a709f0d0b271476cfea5a
MD5 hash:
076b7e834a15033eee3d294386e2bc8b
SHA1 hash:
7fd6eaaaa2fcd76a0e9d9b73d60394bc720125da
Link:
https://www.unpac.me/results/fdfe3391-febb-49fa-ba0a-bbcb7a2aafde/
SH256 hash:
8c92b39496a1f938d9c16ad3e1a7948b48923fd028e23a422c5bf8f0b7e1138b
MD5 hash:
1965f06fb4c6e169c7014c90c5b93199
SHA1 hash:
a8a949da0262c8165e52fd84276b0f299a86db2b
Link:
https://www.unpac.me/results/fdfe3391-febb-49fa-ba0a-bbcb7a2aafde/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8c92b39496a1/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/8c92b39496a1f938d9c16ad3e1a7948b48923fd028e23a422c5bf8f0b7e1138b

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
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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.

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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