MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c2e38b05804fa43eb0cd54de0187ef7d90aa79191877124a504690172ca33b78. 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: 14


Intelligence 14 IOCs YARA 9 File information Comments
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SHA256 hash: c2e38b05804fa43eb0cd54de0187ef7d90aa79191877124a504690172ca33b78
SHA3-384 hash: ebdb1c01caadc5d491a37fe07f96d08c897155d367703c2203c543648ef78ac70aa864ef279c5a2f5141991584d6a5f9
SHA1 hash: 3fe4b6e14a16afae6e3b0da4dfbce9ab77a2a002
MD5 hash: 6c6f89b6c7cef1b8c17183fba8253844
humanhash: wyoming-twenty-july-high
File name:fed.exe
Download: download sample
Signature Formbook
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File size:425'536 bytes
First seen:2022-08-19 13:21:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:xjodsct/uQjM3QKvsOZmIi/DZONUNyofCN157HPjCiKiP7:q6ct/ZoNniFRIJtbC3K7
TLSH T1E29408F0317D83C3D1A58EB10FCA86B079F176ACA8D0560DA0F99B2E93D2355149D9EE
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon d4a6a494a48484a4 (65 x AgentTesla, 39 x Formbook, 8 x RemcosRAT)
Reporter malwarelabnet
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
319
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
fed.exe
Verdict:
Malicious activity
Analysis date:
2022-08-19 13:24:32 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/6d7cf68a-10ac-4537-a2ec-564fee46f90b

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/299772/
Detection(s):
SecuriteInfo.com.Trojan.DownloaderNET.345.22295.30776.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file
Searching for synchronization primitives
Сreating synchronization primitives
Launching cmd.exe command interpreter
Reading critical registry keys
Sending a custom TCP request
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:
formbook obfuscated overlay packed
Link:
https://www.filescan.io/uploads/62ff8eb9eb0bf1e2c6efb0f3/reports/f12e4a87-ac66-4113-ac5b-4323e2e0accd/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b0aad42e-ac73-470d-a33f-94514ae0ced9
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1054394
Signature
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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 virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 686911 Sample: fed.exe Startdate: 19/08/2022 Architecture: WINDOWS Score: 100 31 www.artovus.com 2->31 33 ghs.googlehosted.com 2->33 39 Snort IDS alert for network traffic 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Antivirus detection for URL or domain 2->43 45 6 other signatures 2->45 11 fed.exe 1 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\fed.exe.log, ASCII 11->29 dropped 57 Writes to foreign memory regions 11->57 59 Allocates memory in foreign processes 11->59 61 Injects a PE file into a foreign processes 11->61 63 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->63 15 cvtres.exe 11->15         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 2 other signatures 15->71 18 explorer.exe 15->18 injected process9 dnsIp10 35 www.evershedsutherlands.com 99.83.175.80, 49747, 80 AMAZON-02US United States 18->35 37 www.eventrewards.site 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 49 Uses netsh to modify the Windows network and firewall settings 18->49 22 netsh.exe 18->22         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/c2e38b05804fa43eb0cd54de0187ef7d90aa79191877124a504690172ca33b78/
Threat name:
ByteCode-MSIL.Trojan.Mamut
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Status:
Malicious
First seen:
2022-08-19 12:38:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ylrywbmaj6sd5mgnktpadb7ppwiku6izdb3ressqi2ibolfdhn4a._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:s3s3 rat spyware stealer trojan
Link:
https://tria.ge/reports/220819-ql79fsgeb3/
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
Formbook payload
Formbook
Unpacked files
SH256 hash:
072f4f8ae3bf501da1075c9689b1e76d2f3def6d05686be3af0f8a90f965d784
MD5 hash:
9d3c6d818a558a5718f0bc65bb953efb
SHA1 hash:
0631e3047afd1443452de5d323f2910eb371b75f
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/21711aac-c28d-4a9e-bb1d-30b8cfa35f53/
Parent samples :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 hash:
d38ebb22428aeda2545c74d4a96cdbf07a5086c35830ccec388baf2ae8eb68f9
MD5 hash:
d2366c5ccf16384dd9a60479883865bf
SHA1 hash:
050d06fd1f84a5f9d4c56dea9236026df8420c71
Link:
https://www.unpac.me/results/21711aac-c28d-4a9e-bb1d-30b8cfa35f53/
SH256 hash:
c2e38b05804fa43eb0cd54de0187ef7d90aa79191877124a504690172ca33b78
MD5 hash:
6c6f89b6c7cef1b8c17183fba8253844
SHA1 hash:
3fe4b6e14a16afae6e3b0da4dfbce9ab77a2a002
Link:
https://www.unpac.me/results/21711aac-c28d-4a9e-bb1d-30b8cfa35f53/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/c2e38b05804fa43eb0cd54de0187ef7d90aa79191877124a504690172ca33b78

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:INDICATOR_KB_CERT_1f3216f428f850be2c66caa056f6d821
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

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/299772/

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