MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3a8b21586cf15fb1113fc72dd40f25be6c60ec3f823bc023e783a789a9b15c3. 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: 15


Intelligence 15 IOCs YARA 4 File information Comments
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SHA256 hash: a3a8b21586cf15fb1113fc72dd40f25be6c60ec3f823bc023e783a789a9b15c3
SHA3-384 hash: f91551296b2429ba176044e6ca1f434b3081863fd3170513cb90b1adbbd2a863dadb24605c241612ab21e08e8ced15c3
SHA1 hash: 564b40fdfb368a108bb3ed10aca8cd70d934d1cb
MD5 hash: 32bdbd1c21a08a282f33c920b1be598a
humanhash: asparagus-red-mexico-stairway
File name:transfer 12.4.2023.PDF.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:657'920 bytes
First seen:2023-12-05 07:10:31 UTC
Last seen:2023-12-05 09:15:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:lAl5nF8VVdqrlb0OdZEKGJi4xunRZ5vzeXjuxzyW5ekEedCAA54Mvv:Wlcqhb5XCJgnRZ57UjuxzzoedU54cv
TLSH T1BCE42396319C5FEBE4BF433915200382B734209E5429DE0E5FD9FAD71A9BB804A65F23
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 0060696969716800 (8 x AgentTesla, 6 x Formbook, 2 x Loki)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
5
# of downloads :
315
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/462531/
Detection(s):
SecuriteInfo.com.Trojan.MulDropNET.69.28101.14028.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
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:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/656ecd07855eb2633d5fff4b/reports/8c19d557-c60b-4e92-a72a-c58e01a88c60/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a3a8b21586cf15fb1113fc72dd40f25be6c60ec3f823bc023e783a789a9b15c3
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/90035314-a3ef-4121-bbcf-95d78a022842
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1353754
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
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 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 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
Uses netsh to modify the Windows network and firewall settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1353754 Sample: transfer_12.4.2023.PDF.exe Startdate: 05/12/2023 Architecture: WINDOWS Score: 100 36 www.veriko.shop 2->36 38 www.truthsunveiled.net 2->38 40 13 other IPs or domains 2->40 46 Snort IDS alert for network traffic 2->46 48 Multi AV Scanner detection for domain / URL 2->48 50 Found malware configuration 2->50 52 12 other signatures 2->52 11 transfer_12.4.2023.PDF.exe 3 2->11         started        signatures3 process4 signatures5 60 Tries to detect virtualization through RDTSC time measurements 11->60 62 Injects a PE file into a foreign processes 11->62 14 transfer_12.4.2023.PDF.exe 11->14         started        process6 signatures7 64 Modifies the context of a thread in another process (thread injection) 14->64 66 Maps a DLL or memory area into another process 14->66 68 Sample uses process hollowing technique 14->68 70 Queues an APC in another process (thread injection) 14->70 17 explorer.exe 14 7 14->17 injected process8 dnsIp9 30 truthsunveiled.net 15.197.142.173, 49719, 80 TANDEMUS United States 17->30 32 www.veriko.shop 198.54.117.242, 49711, 80 NAMECHEAP-NETUS United States 17->32 34 6 other IPs or domains 17->34 42 System process connects to network (likely due to code injection or exploit) 17->42 44 Uses netsh to modify the Windows network and firewall settings 17->44 21 netsh.exe 17->21         started        24 autofmt.exe 17->24         started        signatures10 process11 signatures12 54 Modifies the context of a thread in another process (thread injection) 21->54 56 Maps a DLL or memory area into another process 21->56 58 Tries to detect virtualization through RDTSC time measurements 21->58 26 cmd.exe 1 21->26         started        process13 process14 28 conhost.exe 26->28         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a3a8b21586cf15fb1113fc72dd40f25be6c60ec3f823bc023e783a789a9b15c3
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/a3a8b21586cf15fb1113fc72dd40f25be6c60ec3f823bc023e783a789a9b15c3/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2023-12-05 02:16:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
15 of 23 (65.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uoulefmgz4k7weit7rzn2qhslptmmdwd7ar3yar6pa5hrgu3cxbq._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:ui23 rat spyware stealer trojan
Link:
https://tria.ge/reports/231205-hzyceahf6x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
d3fa9d3f5b96553421b7f68df18a9d1360dbe35a80ff46bfa7d1f55233c10d77
MD5 hash:
ff1d467cc897093cdbc8cbe5c70586cd
SHA1 hash:
258160d1ecbd0da5554f3eb237ab29aa88ef1c75
Detections:
FormBook
Create hunting rule
win_formbook_w0
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win_formbook_auto
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win_formbook_g0
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Formbook
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Link:
https://www.unpac.me/results/ae3caae4-7095-40ed-aee4-df8361efde8e/
Parent samples :
f3c42aee968cbb44e74f5f1c0d327668532c8d3739f70f02a4ff61ee652a2d31
7d3b18c39d3639ad23c44c26f01902954b589f0e4657806f22a512246fa8ee56
63e6f72454c13a1384aaf3eb5808a8e886bd0fa100ffe633d5d27ae24c5bc1ac
8ab34111f357482c7c1a01baf14706b2c596945d8657de988344caa1cd66c86d
5e172b1497a76076f9ca46f345383aad816d90c2c8799a7ec3520a85f38c2bdd
f419289ce6729bf9a7f90345784cc401855b13aded8d1968a1cce5a3e21268c4
032b1e0d5f7ccba48a546bc495c919ed0820cade8af61b0368dfc17c8cec6b38
432b45a1dc6f64167c65b55c1e2333f4884b1bc65952f5b3202e7317ac5d54ab
977649dac5dc9b83379b99ac67769d94ef4af83417d471c2d8729808ce0fccc5
9d0c10331d40a7cbeda5f8e93f7314ff0930b7e0338bcd113de8392c0e09091d
99edcf832cb9adb552c8b8994e627f1925f20731e8f15ce82e2711f42b4411d3
ed3666dd7717b088c56ed523b0726d73f9b17d2041ce07838c7c8bca29e4e5d3
a3a8b21586cf15fb1113fc72dd40f25be6c60ec3f823bc023e783a789a9b15c3
8fab6fc296f376b14d5e8e1d574338582febd49051a3e385b09a18e52850ff43
80f1abd5006e75632ccce2516b48be9abf23a9bf80a4dceeee1b73a6b7251b3a
SH256 hash:
2773b987123a2528f3a8d94a044c70c853747b9db274df4b4d323529eea10dc8
MD5 hash:
79074cc7d0fe54f4341dc565d804708c
SHA1 hash:
48958718c61c9c67ead161bf75db8093dc5ff830
Link:
https://www.unpac.me/results/ae3caae4-7095-40ed-aee4-df8361efde8e/
SH256 hash:
7fa6342560b497a18146dd6b9841992b18d9c077135977fe26139821058a4cd3
MD5 hash:
b4bbca1c613fcae703f1ec6fd514c496
SHA1 hash:
4145d88512331f57472fac46cf1742d97a2d1a8c
Link:
https://www.unpac.me/results/ae3caae4-7095-40ed-aee4-df8361efde8e/
SH256 hash:
c34dfbc328de247d25d670c3b7853f1dddd2ec2607d5dbb0480743b45a15ea64
MD5 hash:
85b87384830444e6ab86a4a692ce96cc
SHA1 hash:
0d7d4614cf31d27e68ebf48e76fb1d308cc08152
Link:
https://www.unpac.me/results/ae3caae4-7095-40ed-aee4-df8361efde8e/
SH256 hash:
a3a8b21586cf15fb1113fc72dd40f25be6c60ec3f823bc023e783a789a9b15c3
MD5 hash:
32bdbd1c21a08a282f33c920b1be598a
SHA1 hash:
564b40fdfb368a108bb3ed10aca8cd70d934d1cb
Link:
https://www.unpac.me/results/ae3caae4-7095-40ed-aee4-df8361efde8e/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a3a8b21586cf/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/a3a8b21586cf15fb1113fc72dd40f25be6c60ec3f823bc023e783a789a9b15c3

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
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Author:malware-lu
Rule name:NETexecutableMicrosoft
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Author:malware-lu
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/462531/

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