MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 57b5c0581d2170ca86ffe5ec13269dc3b7813d46476d82ade07c7f49bd95eae6. 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: 17


Intelligence 17 IOCs YARA 1 File information Comments
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SHA256 hash: 57b5c0581d2170ca86ffe5ec13269dc3b7813d46476d82ade07c7f49bd95eae6
SHA3-384 hash: f9ac840726816433bbf63bce52e85ca1e15998f4583915874de6db35d87bbe246dee1fb86211cbdca5663d0c7fcb4fdb
SHA1 hash: a29b7008865a15e84dab35a16baafc7a8c1a7938
MD5 hash: f6ce3953c56c3c950f4dec97a40f4991
humanhash: yankee-bulldog-fix-missouri
File name:Purchase Order August 2023.exe
Download: download sample
Signature Formbook
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File size:279'257 bytes
First seen:2023-08-17 09:30:31 UTC
Last seen:2023-08-17 09:30:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 431 x GuLoader)
ssdeep 6144:PYa6kGBfoa8Ss96wuH0myiUDzeXquukNHeka:PYiGea87v1ziGmha
TLSH T181541231B6B5A07BEAB34B3225791B676FC48027682C864F0710295C7FA6ED1CD0DB76
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter cocaman
Tags:exe FormBook Shipping

Intelligence

File Origin
# of uploads :
2
# of downloads :
288
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
Purchase Order August 2023.exe
Verdict:
Malicious activity
Analysis date:
2023-08-17 09:31:42 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/3a3de0e2-3409-4d55-a2ad-5b7621e56500

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/443178/
Detection(s):
Sanesecurity.Rogue.0hr.20230817-0239.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/103037/overview
Behaviour
MalwareBazaar
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/57b5c0581d2170ca86ffe5ec13269dc3b7813d46476d82ade07c7f49bd95eae6
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/1339326e-8770-424f-a2f4-3a54c7429114
Result
Threat name:
FormBook, NSISDropper
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1292670
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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
Yara detected NSISDropper
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1292670 Sample: Purchase_Order_August_2023.exe Startdate: 17/08/2023 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic 2->36 38 Multi AV Scanner detection for domain / URL 2->38 40 Found malware configuration 2->40 42 10 other signatures 2->42 10 Purchase_Order_August_2023.exe 18 2->10         started        process3 file4 28 C:\Users\user\AppData\Local\...\ckuijbg.dll, PE32 10->28 dropped 52 Detected unpacking (changes PE section rights) 10->52 54 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 10->54 56 Maps a DLL or memory area into another process 10->56 58 Tries to detect virtualization through RDTSC time measurements 10->58 14 Purchase_Order_August_2023.exe 10->14         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 17 explorer.exe 5 1 14->17 injected process8 dnsIp9 30 www.wlxzjlny.cfd 107.148.86.155, 49760, 80 PEGTECHINCUS United States 17->30 32 www.ymjblnvo.cfd 192.74.228.253, 49764, 80 PEGTECHINCUS United States 17->32 34 13 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 wlanext.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 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/57b5c0581d2170ca86ffe5ec13269dc3b7813d46476d82ade07c7f49bd95eae6/
Threat name:
Win32.Trojan.Nemesis
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Status:
Malicious
First seen:
2023-08-16 22:47:15 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=k624awa5efymvbx74xwbgju5yo3ycpkgi5wyflpapr7utpmv5lta._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:sn26 rat spyware stealer trojan
Link:
https://tria.ge/reports/230817-lg2hwsac7y/
Behaviour
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
Deletes itself
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
1e1b4481ba7d52b87ebb7d57e8421d9fd26912ce371f389f5e30955da7764a6c
MD5 hash:
0329ad0ec581cf3cfbb4aafa6f7f64c7
SHA1 hash:
bd8364451ec038bea0d1e840a18e71c5ed3a6bf6
Link:
https://www.unpac.me/results/533bf1d3-5815-4252-b03e-4a84273dac9d/
SH256 hash:
57b5c0581d2170ca86ffe5ec13269dc3b7813d46476d82ade07c7f49bd95eae6
MD5 hash:
f6ce3953c56c3c950f4dec97a40f4991
SHA1 hash:
a29b7008865a15e84dab35a16baafc7a8c1a7938
Link:
https://www.unpac.me/results/533bf1d3-5815-4252-b03e-4a84273dac9d/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/57b5c0581d21/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/57b5c0581d2170ca86ffe5ec13269dc3b7813d46476d82ade07c7f49bd95eae6

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:shellcode
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Author:nex
Description:Matched shellcode byte patterns

File information

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

Malspam

Formbook

zip 666587c110c115172565e9cb89bc746a80154545e48707d52de9fe775a512953

Formbook

Executable exe 57b5c0581d2170ca86ffe5ec13269dc3b7813d46476d82ade07c7f49bd95eae6

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 666587c110c115172565e9cb89bc746a80154545e48707d52de9fe775a512953
  
Dropped by
SHA256 617ac2c794fb2978940a44e0a528f48b564d12f65a7cab7d076b02cdfc1d308c
Cape
Cape
https://www.capesandbox.com/analysis/443178/
  
Dropped by
MD5 453372f96e9aeb54adce4656fec999b7
  
Dropped by
MD5 9483cac9c0c454f506af422bcfe433f7

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