MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c16321285091a58a2a0e63e4d445a71d6b9a60f27a6741c0a590a4bc5290d368. 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: 18


Intelligence 18 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c16321285091a58a2a0e63e4d445a71d6b9a60f27a6741c0a590a4bc5290d368
SHA3-384 hash: efe836b838128ae2c0112d9849210b2916d10c78d492efdb66ce675871b4ae7800b9975ff261cba850465277e2d47062
SHA1 hash: 839a300e852e2148ad6e700caa3c8106cd237f17
MD5 hash: 3bb3531506305dd04faae7578a83d44e
humanhash: finch-mexico-zulu-glucose
File name:T9KOaTmE8tq9zus.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:660'480 bytes
First seen:2024-09-12 08:52:56 UTC
Last seen:2024-09-12 09:35:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:MAViwt5XHkAG46Oz3cjiG74gnS2QoywT7WmXyIp:xiw5NnjQ4kgKf
Threatray 2'272 similar samples on MalwareBazaar
TLSH T1E7E41268331EFF59C5AA47F90AB2D2B403B26F8EB625E3055FDA5CD73548714A800E63
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 0c6e62e2faaac0c8 (6 x AgentTesla, 5 x Formbook, 2 x SnakeKeylogger)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
400
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
T9KOaTmE8tq9zus.exe
Verdict:
Malicious activity
Analysis date:
2024-09-12 08:58:24 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/93d65ec4-a794-48dd-939e-e9cd59266555

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3057.2133.13136.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e2abf076bc4542b0497e82
Tags:
Static Stealth Msil
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
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/66e2abf13b1017a83adb1c18/reports/d479b19a-8ab2-4e43-ab02-d2d4bb3a2a14/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/c16321285091a58a2a0e63e4d445a71d6b9a60f27a6741c0a590a4bc5290d368
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:
Suspicious
Link:
https://analyze.intezer.com/analyses/447f6b8c-2f22-4384-a1fa-a8f024524b7b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1509938
Signature
.NET source code contains potential unpacker
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)
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
Switches to a custom stack to bypass stack traces
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: 1509938 Sample: T9KOaTmE8tq9zus.exe Startdate: 12/09/2024 Architecture: WINDOWS Score: 100 29 www.ookoutcapstone.xyz 2->29 31 www.yougouaaggyy.top 2->31 33 9 other IPs or domains 2->33 35 Found malware configuration 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 Multi AV Scanner detection for submitted file 2->39 43 7 other signatures 2->43 11 T9KOaTmE8tq9zus.exe 3 2->11         started        signatures3 41 Performs DNS queries to domains with low reputation 29->41 process4 file5 27 C:\Users\user\...\T9KOaTmE8tq9zus.exe.log, ASCII 11->27 dropped 53 Tries to detect virtualization through RDTSC time measurements 11->53 55 Injects a PE file into a foreign processes 11->55 57 Switches to a custom stack to bypass stack traces 11->57 15 T9KOaTmE8tq9zus.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 2 other signatures 15->65 18 explorer.exe 57 1 15->18 injected process9 process10 20 control.exe 18->20         started        signatures11 45 Modifies the context of a thread in another process (thread injection) 20->45 47 Maps a DLL or memory area into another process 20->47 49 Tries to detect virtualization through RDTSC time measurements 20->49 51 Switches to a custom stack to bypass stack traces 20->51 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c16321285091a58a2a0e63e4d445a71d6b9a60f27a6741c0a590a4bc5290d368
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c16321285091a58a2a0e63e4d445a71d6b9a60f27a6741c0a590a4bc5290d368/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-09-12 07:43:49 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yfrsckcqsgsyukqompsnirnhdvvzuyhspjtudqffscslyuuq2nua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
39641278c51c0559206d6d7c4f34c705e9ac56fb5f6073cef1c0c3818497783a
Formbook
4da4d8e83255158a09663b9da8faaecae3a0a9175571aee37567f224cb34e694
Formbook
8c92b39496a1f938d9c16ad3e1a7948b48923fd028e23a422c5bf8f0b7e1138b
Formbook
9960236e7b8167ec9b3ebc5426392923b89f58763b83c914bd34bfd93ad8aaab
Formbook
bbb4d62f2db865624777d1d4413cfa6aac6139ef783befcff575a640a31e3a56
Formbook
c920a418d58520669f8f3d0db050c479bb16548283758221a24ad631e061fab7
Formbook
+ 2'262 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:d16h discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/240912-ktap9szemg/
Behaviour
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/2101ef1b-ef21-4585-9239-dc58fe63c232
Unpacked files
SH256 hash:
4cd17fb56e2098be919e5190aad403b0ef40eb3df5ea756d3e50c0706aa230ce
MD5 hash:
b364aa1dd34d1fe2d21b5f4e8018a300
SHA1 hash:
3ce021f11b4b0166c1e7d7873f7a1e3988b6f4d9
Detections:
FormBook
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/6b8ebf64-8838-44f9-bcd3-3a34e4852bbd/
Parent samples :
4da4d8e83255158a09663b9da8faaecae3a0a9175571aee37567f224cb34e694
dcb417103bd0f315ba7cd30f1eadfca56a56122caec7ce4afe96b410931f43e6
c920a418d58520669f8f3d0db050c479bb16548283758221a24ad631e061fab7
8c92b39496a1f938d9c16ad3e1a7948b48923fd028e23a422c5bf8f0b7e1138b
39641278c51c0559206d6d7c4f34c705e9ac56fb5f6073cef1c0c3818497783a
bbb4d62f2db865624777d1d4413cfa6aac6139ef783befcff575a640a31e3a56
9960236e7b8167ec9b3ebc5426392923b89f58763b83c914bd34bfd93ad8aaab
a87b700c19104816959afda09a7673d758a21261d417c14d20a208280ee3385f
c16321285091a58a2a0e63e4d445a71d6b9a60f27a6741c0a590a4bc5290d368
8d4982f32dffdff70405b3185f7a3e6ca96c596663576ca85c1f8dae9352e3b3
42468be1102807825f890daa9a0c53c0662e5dc12041a50a58119b416bba8527
SH256 hash:
07daa946a6852417cccd0374df8c48a19638dd65ba6beb2cad958a7007e5496a
MD5 hash:
28a5670f9ecefb0c4624486e63f20672
SHA1 hash:
1ad841618d96557c4fd1857063703ce6ef40cf5d
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/6b8ebf64-8838-44f9-bcd3-3a34e4852bbd/
SH256 hash:
c59a72e874640d2d2c5669edc14fdeb82a72cbacde61679907d2926b8ed79d08
MD5 hash:
b37fc99b846edbde0d0f36bee1760849
SHA1 hash:
0016396b048dcbda5b87742c32678f706db6362c
Link:
https://www.unpac.me/results/6b8ebf64-8838-44f9-bcd3-3a34e4852bbd/
SH256 hash:
c16321285091a58a2a0e63e4d445a71d6b9a60f27a6741c0a590a4bc5290d368
MD5 hash:
3bb3531506305dd04faae7578a83d44e
SHA1 hash:
839a300e852e2148ad6e700caa3c8106cd237f17
Link:
https://www.unpac.me/results/6b8ebf64-8838-44f9-bcd3-3a34e4852bbd/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c16321285091/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/c16321285091a58a2a0e63e4d445a71d6b9a60f27a6741c0a590a4bc5290d368

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:pe_imphash
Create hunting rule
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.

Malspam

Formbook

Executable exe c16321285091a58a2a0e63e4d445a71d6b9a60f27a6741c0a590a4bc5290d368

(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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