MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac350e4d5fcb2fd0087addb5f00a8a0d73ca19f818ab1585f819ed25de47e60c. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ac350e4d5fcb2fd0087addb5f00a8a0d73ca19f818ab1585f819ed25de47e60c
SHA3-384 hash: 8fa78db3fafef9c8c96b9dc3da6c3f3dea695348dc8732c850c68934bc7cff29645220f0d1888b7630747ef57b4bd7ae
SHA1 hash: 144b0516f8daa8a51580d36444edb54e7a2d10e5
MD5 hash: 371247928b8571d22113378a5c089df3
humanhash: pluto-island-lithium-harry
File name:Shipping Document. pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:957'440 bytes
First seen:2022-08-10 20:23:47 UTC
Last seen:2022-08-16 13:08:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:VdPlWAC7oayzn+DLgbj7r1Q6pc5O2AXF1q:VlAAladoLdS5b
TLSH T11C15AE41D98549E4DD64AB326633CC308A337EA9E4B5992D28DE3D373FBB7A7D012502
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon d4c4c4d8ccd4f0cc (241 x AgentTesla, 65 x Loki, 41 x Formbook)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
294
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Shipping Document. pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-08-10 20:29:19 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/322103be-d585-4cff-a99f-159455781c7a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/297785/
Detection(s):
SecuriteInfo.com.Variant.Strictor.265337.31494.29086.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62f414667a5eee50480705f2/reports/12fc95b1-e44a-4fa2-82f0-d4ec0fd5d253/overview
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/ad703776-8cdf-4043-a724-88e3ebf05c75
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1049512
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in 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 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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 682004 Sample: Shipping Document. pdf.exe Startdate: 10/08/2022 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 42 10 other signatures 2->42 10 Shipping Document. pdf.exe 3 2->10         started        process3 file4 30 C:\Users\...\Shipping Document. pdf.exe.log, ASCII 10->30 dropped 52 Writes to foreign memory regions 10->52 54 Allocates memory in foreign processes 10->54 56 Injects a PE file into a foreign processes 10->56 14 RegSvcs.exe 10->14         started        17 RegSvcs.exe 10->17         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 19 explorer.exe 14->19 injected 66 Tries to detect virtualization through RDTSC time measurements 17->66 process8 dnsIp9 32 klantings002.sbs 172.96.186.152, 49882, 80 SINGLEHOP-LLCUS Canada 19->32 34 www.klantings002.sbs 19->34 44 System process connects to network (likely due to code injection or exploit) 19->44 23 cmmon32.exe 19->23         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 23->46 48 Maps a DLL or memory area into another process 23->48 50 Tries to detect virtualization through RDTSC time measurements 23->50 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ac350e4d5fcb2fd0087addb5f00a8a0d73ca19f818ab1585f819ed25de47e60c/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-08-10 18:34:43 UTC
File Type:
PE (.Net Exe)
Extracted files:
45
AV detection:
24 of 26 (92.31%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vq2q4tk7zmx5acd23w27acukbvz4ugpydcvrlbpydhwslxsh4yga._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:o85a rat spyware stealer trojan
Link:
https://tria.ge/reports/220810-y6pa3seehq/
Behaviour
Enumerates system info in registry
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
Formbook payload
Formbook
Unpacked files
SH256 hash:
3b24bbfee3565a866f8ca1c97c522f89f639db78d100a1b4624ae4c7f0e20f85
MD5 hash:
e899386905a6a4bbf58dba3be151fd35
SHA1 hash:
a047e3e077d60f29b0a97029afa5025c4aa05e5d
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/d7e08ef4-a087-49aa-84c6-b23ad8307c44/
Parent samples :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 hash:
18eb60c0eb3e1c610526d9f4b42684ac36a2ebb521514a8770dca2f2afd7f471
MD5 hash:
7ca239778f9f46d28b08876564dba525
SHA1 hash:
973b0d0d98a83b7dfcf1bfce04a179b0f070b98c
Link:
https://www.unpac.me/results/d7e08ef4-a087-49aa-84c6-b23ad8307c44/
SH256 hash:
679e2c4d39b4f18e657c0aedca9daaeda2b2240aed567be906bf32dfc9995767
MD5 hash:
426cf02391cf34be2362467bd9b093d6
SHA1 hash:
59261d93531671d050f624983e4967de2cc012e2
Link:
https://www.unpac.me/results/d7e08ef4-a087-49aa-84c6-b23ad8307c44/
SH256 hash:
7f2e92de7ed3a1c29fd80cdb9a86087f43fe39d05a0fd7cf67244275af9105fd
MD5 hash:
fc384033326160050128aef2ba563a7c
SHA1 hash:
2f1149e650ef78ee4f9529debb6ea86afb905994
Link:
https://www.unpac.me/results/d7e08ef4-a087-49aa-84c6-b23ad8307c44/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/d7e08ef4-a087-49aa-84c6-b23ad8307c44/
SH256 hash:
ac350e4d5fcb2fd0087addb5f00a8a0d73ca19f818ab1585f819ed25de47e60c
MD5 hash:
371247928b8571d22113378a5c089df3
SHA1 hash:
144b0516f8daa8a51580d36444edb54e7a2d10e5
Link:
https://www.unpac.me/results/d7e08ef4-a087-49aa-84c6-b23ad8307c44/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ac350e4d5fcb/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/ac350e4d5fcb2fd0087addb5f00a8a0d73ca19f818ab1585f819ed25de47e60c

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: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

zip f9cd6bf3934cf6c8d28bb6bcd9c80f03659492dd45472945630590d987ebfa70

Formbook

Executable exe ac350e4d5fcb2fd0087addb5f00a8a0d73ca19f818ab1585f819ed25de47e60c

(this sample)

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/297785/
  
Dropped by
SHA256 f9cd6bf3934cf6c8d28bb6bcd9c80f03659492dd45472945630590d987ebfa70
  
Dropped by
MD5 6766e724c88bc5866e497803f14cd609

Comments