MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3c5d2a990e487ad59a140909b2e6047494467b163f6696be5e247f644e4c3210. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3c5d2a990e487ad59a140909b2e6047494467b163f6696be5e247f644e4c3210
SHA3-384 hash: 344164fcd596e3f856d2ec887be504bcc22ff9be156a46cea9563953b594d1b2bfb7b6cf4bb0c377de2a9ed9f0714650
SHA1 hash: eb18f3f4220d35e4eae6f06898544f24d74653bd
MD5 hash: 0983cb6f908dcef2e94b4e9e540d39f9
humanhash: eight-oxygen-solar-failed
File name:0983cb6f908dcef2e94b4e9e540d39f9.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:607'232 bytes
First seen:2021-10-12 08:55:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:RhvBUHXUcO2qYYUWXnDki3P/dqMU6QmiRhVq+6Vzgun0:3JUHkcOLp3YsVvWQLCun
Threatray 10'339 similar samples on MalwareBazaar
TLSH T108D4AF2039FE4169F272AF762EE1B6999F6FBEB22503905D1051734B0632A41CDF163B
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
135
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
famz10.doc
Verdict:
Malicious activity
Analysis date:
2021-10-12 00:02:45 UTC
Tags:
exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/eaad857f-6946-4377-86db-c7ab9c4130d4

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/196858/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25-2.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61654da41c2d58ba7402ecb1/reports/35a90fbf-a1a6-4e0a-b150-467e1eea19d2/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f9f02e69-7fb7-4a59-affe-271da909157f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/868443
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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
Self deletion via cmd delete
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 500871 Sample: RjsD53vPgB.exe Startdate: 12/10/2021 Architecture: WINDOWS Score: 100 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 7 other signatures 2->44 10 RjsD53vPgB.exe 3 2->10         started        process3 file4 30 C:\Users\user\AppData\...\RjsD53vPgB.exe.log, ASCII 10->30 dropped 54 Tries to detect virtualization through RDTSC time measurements 10->54 56 Injects a PE file into a foreign processes 10->56 14 RjsD53vPgB.exe 10->14         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 17 explorer.exe 14->17 injected process8 dnsIp9 32 comocobrarcontarjeta.com 151.106.97.149, 49857, 80 PLUSSERVER-ASN1DE Germany 17->32 34 www.emasterysuccess.com 17->34 36 2 other IPs or domains 17->36 46 System process connects to network (likely due to code injection or exploit) 17->46 21 msiexec.exe 17->21         started        24 autofmt.exe 17->24         started        signatures10 process11 signatures12 48 Self deletion via cmd delete 21->48 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 26 cmd.exe 1 21->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3c5d2a990e487ad59a140909b2e6047494467b163f6696be5e247f644e4c3210/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-10-11 16:53:33 UTC
AV detection:
20 of 45 (44.44%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
22a5161a4d95e737100936f93042049719d13a8437d751c22ad485ed51ee7c96
Formbook
54507294252cb270a6b1944f838eb0428d87fbcfaf05e887126d5754af3ec1fa
Formbook
62ee412123d6e8832cebbf33d84d5695adc4fc2d66f0ec7222d9ccd5f21d4866
Formbook
76cd5f994be53f3f24e2b2018263b9ab582e84870ee8d24f38c6d11adae3688c
Formbook
7e647d064a55731e15f05904b636037d2339e84ca425f53cf752004cd8797468
Formbook
83c49019ef9b9520235af445b484a3b3f275729cd92bb960a9264d6704190329
Formbook
90e6f10a0caabd250a9d43d12982b5861ec160177d99ad07ce68bd18d103736c
Formbook
a26563b8bb82e71f54068820dd88b7de84199111b66e33af94c09e2344d9db74
Formbook
f03c40561ba64d0797bcf79bfefd015c8d9ca010f1bd67b3d27ffab584a9911e
Formbook
+ 10'329 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:fzsg rat spyware stealer trojan
Link:
https://tria.ge/reports/211012-kvhr9sbhgk/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.grouplmc.com/fzsg/
Unpacked files
SH256 hash:
83b90d18ad1250a4604f1417f23754c65f834f8c7f1fd29b9f2f634315203fd3
MD5 hash:
4a78ff31505436877b5f3e8378e9baf7
SHA1 hash:
1155e26225d3aae4d49a0645e452d22337f5baa0
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/a5244135-2b4d-4a30-8b65-b5f88dfa590a/
Parent samples :
f03c40561ba64d0797bcf79bfefd015c8d9ca010f1bd67b3d27ffab584a9911e
54507294252cb270a6b1944f838eb0428d87fbcfaf05e887126d5754af3ec1fa
83c49019ef9b9520235af445b484a3b3f275729cd92bb960a9264d6704190329
7e647d064a55731e15f05904b636037d2339e84ca425f53cf752004cd8797468
62ee412123d6e8832cebbf33d84d5695adc4fc2d66f0ec7222d9ccd5f21d4866
3c5d2a990e487ad59a140909b2e6047494467b163f6696be5e247f644e4c3210
b877e6f41d83c546f056fa7f88b5f323d944616a9919025e71971d034b56b592
SH256 hash:
d434e7cb4105d7e760a39a1a8a1306338b00fbd6507025d53e4c44ede73d3788
MD5 hash:
6613b992e916924c3f38a179bb9866ab
SHA1 hash:
cd5741f4d0a4685c5fd9c9e2e708bbf33ec1691a
Link:
https://www.unpac.me/results/a5244135-2b4d-4a30-8b65-b5f88dfa590a/
SH256 hash:
1af9adc0e637c220a56f0b3148e21d88df7eb0bdca20f420d5596b9c06949f1f
MD5 hash:
008c0d8f3d7004864272ea0139a5726f
SHA1 hash:
71b25ecab9b0f784e0d40a13a7dc0fad0020377e
Link:
https://www.unpac.me/results/a5244135-2b4d-4a30-8b65-b5f88dfa590a/
SH256 hash:
3c5d2a990e487ad59a140909b2e6047494467b163f6696be5e247f644e4c3210
MD5 hash:
0983cb6f908dcef2e94b4e9e540d39f9
SHA1 hash:
eb18f3f4220d35e4eae6f06898544f24d74653bd
Link:
https://www.unpac.me/results/a5244135-2b4d-4a30-8b65-b5f88dfa590a/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/3c5d2a990e48/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/3c5d2a990e487ad59a140909b2e6047494467b163f6696be5e247f644e4c3210

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: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.

Web download

Formbook

Executable exe 3c5d2a990e487ad59a140909b2e6047494467b163f6696be5e247f644e4c3210

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1667902/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/196858/

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