MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a053b5020a3a82c6b9f4a4e6ac3b3a2e3d628a3ae42a60cf94ddaaf42aafe98. 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
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SHA256 hash: 4a053b5020a3a82c6b9f4a4e6ac3b3a2e3d628a3ae42a60cf94ddaaf42aafe98
SHA3-384 hash: fae1773c4f834ee7d764ea790a9de6fdb97261a0342706443cab773fdeb4ff686a9fcd6bc3517ce45b7f5ac12610fdc7
SHA1 hash: f97b95a39bb838fda406839f802f6a1042723fa0
MD5 hash: ef3d04a458241ac4fe3d02654fd92179
humanhash: cat-fix-wisconsin-freddie
File name:ordem de compra pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:600'064 bytes
First seen:2023-09-14 07:14:45 UTC
Last seen:2023-09-15 11:26:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:6WRF2iNyLfDWrLvVR/6tBmLkCg3b17RSldHlWJF8zdeYrVmRRo1:68F1ILf7tMLTgPSnH8JFCdeYBmRG1
Threatray 3'752 similar samples on MalwareBazaar
TLSH T1BFD4126CC684975EE86A77F604E1972193B2E7234A19F78F1FC876AF1E813060610BD7
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) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
304
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
ordem de compra pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-09-14 07:17:41 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/0a6af34d-f736-4173-9a30-12b39a7a2abd

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/448570/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Creating a file
Launching cmd.exe command interpreter
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:
packed
Link:
https://www.filescan.io/uploads/6502b2fcda7b76f50a24ddcc/reports/32bda4d5-78a7-45dc-a789-2055da8390bf/overview
Verdict:
Malicious
Labled as:
Ser.MSILHeracles.Generic
Link:
https://www.hybrid-analysis.com/sample/4a053b5020a3a82c6b9f4a4e6ac3b3a2e3d628a3ae42a60cf94ddaaf42aafe98
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/949d8df0-2484-4775-942d-245e08423b6c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1307661
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
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 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)
Sample uses process hollowing technique
Sigma detected: Scheduled temp file as task from temp location
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1307661 Sample: ordem_de_compra_pdf.exe Startdate: 14/09/2023 Architecture: WINDOWS Score: 100 66 Found malware configuration 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 Antivirus detection for URL or domain 2->70 72 10 other signatures 2->72 10 ordem_de_compra_pdf.exe 7 2->10         started        14 TAeLieGEP.exe 5 2->14         started        process3 file4 48 C:\Users\user\AppData\Roaming\TAeLieGEP.exe, PE32 10->48 dropped 50 C:\Users\user\AppData\Local\...\tmp8D70.tmp, XML 10->50 dropped 80 Uses schtasks.exe or at.exe to add and modify task schedules 10->80 82 Writes to foreign memory regions 10->82 84 Allocates memory in foreign processes 10->84 86 Adds a directory exclusion to Windows Defender 10->86 16 RegSvcs.exe 10->16         started        19 powershell.exe 18 10->19         started        21 schtasks.exe 1 10->21         started        88 Multi AV Scanner detection for dropped file 14->88 90 Machine Learning detection for dropped file 14->90 92 Injects a PE file into a foreign processes 14->92 23 RegSvcs.exe 14->23         started        25 schtasks.exe 1 14->25         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 16->58 60 Maps a DLL or memory area into another process 16->60 62 Sample uses process hollowing technique 16->62 64 2 other signatures 16->64 27 explorer.exe 5 6 16->27 injected 31 conhost.exe 19->31         started        33 conhost.exe 21->33         started        35 conhost.exe 25->35         started        process8 dnsIp9 52 www.cinelinz.com 72.251.233.245, 49776, 80 VOXEL-DOT-NETUS United States 27->52 54 www.shoplocallytoday.com 91.195.240.123, 49760, 80 SEDO-ASDE Germany 27->54 56 14 other IPs or domains 27->56 94 System process connects to network (likely due to code injection or exploit) 27->94 96 Performs DNS queries to domains with low reputation 27->96 37 cmd.exe 27->37         started        40 wscript.exe 27->40         started        42 autoconv.exe 27->42         started        signatures10 process11 signatures12 74 Modifies the context of a thread in another process (thread injection) 37->74 76 Maps a DLL or memory area into another process 37->76 78 Tries to detect virtualization through RDTSC time measurements 37->78 44 cmd.exe 37->44         started        process13 process14 46 conhost.exe 44->46         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4a053b5020a3a82c6b9f4a4e6ac3b3a2e3d628a3ae42a60cf94ddaaf42aafe98/
Threat name:
Win32.Trojan.Znyonm
Create hunting rule
Status:
Malicious
First seen:
2023-09-13 13:34:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
15 of 21 (71.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jictwubauoucy247jjhgvq5tulr5mkfdvzbkmdhzjxnk6qvk72ma._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
3c3ae98bf770e4af3eca938d72bcfcab9bfc5415d599157fce0c744aa814dcfa
Formbook
50ecc3b01ef9acca243b41728e62bec369d80da286281895cf3c4aadd6a1e444
Formbook
60fe13a26cde812037097d97acc94f5ab707e86e09744fad56f07afd324401bf
Formbook
677d8f0356d1a1afde7e90e35a132cc47eb2c1568648c1c90c237921df11a15a
Formbook
79f878be696492904510496633fcdc7458f7b2e2efb373f7d097b2276a708e51
Formbook
9472d7a4e6028ef04c5b1a1a57844a3198229bd209b68c1d3534123e4fad8fb2
Formbook
9bdc185c4c52ab97921a7d99b7bfe6e22ac5be828d999b19e41983b3c79af0c9
Formbook
9dfcc932a69f5fd8aa13068874c8c34a90ed3cc60e54be8bd7c2f815c4cf952b
Formbook
f3a16fbf76dc776eb61b55b5a5aa8d3203e77effc2e05d85f93df96612323095
Formbook
+ 3'742 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:g11y rat spyware stealer trojan
Link:
https://tria.ge/reports/230914-h28wxsch35/
Behaviour
Creates scheduled task(s)
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
ff69e9866ccb941a52f0e7cb6d3f44d5aaa2a38809c1aa8ff1b19dcc0ae92ecf
MD5 hash:
6597e9bddfafdb69d20ad28afd36493f
SHA1 hash:
b36f37d6bffdc9476ef9a2a79b99d8f95855ddb0
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/b4bf13b6-74a6-400a-b029-ca96c4ca7adb/
Parent samples :
50ecc3b01ef9acca243b41728e62bec369d80da286281895cf3c4aadd6a1e444
99a6b266947d8ce131eca526226acbec21556a139713a161332e5c99e905fbba
4a053b5020a3a82c6b9f4a4e6ac3b3a2e3d628a3ae42a60cf94ddaaf42aafe98
d791946e423b64c9ec976a5b9491b6ee9294e8dda0e5707ffbb4c96448b908e1
SH256 hash:
fec8dd79fd70236c36478cf994d9f79846667ef89bdef83eb0cda8dd442c3ce8
MD5 hash:
7325ada2434f098824c7700790c1cfad
SHA1 hash:
b17f8b6469b4bec754865ab1f772677b65422b6c
Link:
https://www.unpac.me/results/b4bf13b6-74a6-400a-b029-ca96c4ca7adb/
SH256 hash:
dcd76d8eeb4f5b02d2a760e657d22bff35a0abc02fbe479109d10b0d02786690
MD5 hash:
f0e3a86475b32b0eb73758d22b2b4bb1
SHA1 hash:
3f0bbdfe9406f829c01a8ebc4a82fab72afb75a3
Link:
https://www.unpac.me/results/b4bf13b6-74a6-400a-b029-ca96c4ca7adb/
SH256 hash:
0630b864e828fff2d66f33ab7d00fad231df4c00fc0bbad313ee0d12ca503198
MD5 hash:
f559a9abbd849eb977d262d597d6e4fd
SHA1 hash:
0a8769b40b026852690c89b913c2812817ef43c8
Link:
https://www.unpac.me/results/b4bf13b6-74a6-400a-b029-ca96c4ca7adb/
Parent samples :
cef72412a1dd9486bae5f7e606d4330660fba98575ba1c939559ccc83536f41a
81ccf158093718305b3499d0f16d8a82bcad69f2740066daca8d5b5ca9979688
SH256 hash:
4a053b5020a3a82c6b9f4a4e6ac3b3a2e3d628a3ae42a60cf94ddaaf42aafe98
MD5 hash:
ef3d04a458241ac4fe3d02654fd92179
SHA1 hash:
f97b95a39bb838fda406839f802f6a1042723fa0
Link:
https://www.unpac.me/results/b4bf13b6-74a6-400a-b029-ca96c4ca7adb/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4a053b5020a3/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/4a053b5020a3a82c6b9f4a4e6ac3b3a2e3d628a3ae42a60cf94ddaaf42aafe98

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
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 4a053b5020a3a82c6b9f4a4e6ac3b3a2e3d628a3ae42a60cf94ddaaf42aafe98

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/448570/

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