MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c2bde78efbaeb33b33e000a332b10191adf6c2b1e5d30d8cb3a9042419e97922. 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: 12


Intelligence 12 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c2bde78efbaeb33b33e000a332b10191adf6c2b1e5d30d8cb3a9042419e97922
SHA3-384 hash: 8803dd25e0e702aa37c0542e7ce777e35511b8b97d95240386e0c1d536ca90c72330af869704bae76c5655d6942db954
SHA1 hash: a7ded6e68dea6241c71fb0f5afc79dc94babb275
MD5 hash: 1d2dbd02a4482c9a82a3df5f2aee0ff8
humanhash: snake-india-november-monkey
File name:rockk231009.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:232'728 bytes
First seen:2021-08-24 07:13:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 6ef74f7b87fa15b6df54d064a5b8ef31 (10 x AgentTesla, 3 x Formbook, 1 x AZORult)
ssdeep 6144:MelXmIQEXdAqsM/lqq+i/fFPvfS3Hd0NX:MekE6i3FHfSXdi
Threatray 8'341 similar samples on MalwareBazaar
TLSH T1C4340201E75DAE13D394D13D8516B0FDA2F40E7292FF5CB3A366311D69BB2D82122E1A
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
297
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
rockk231009.exe
Verdict:
Malicious activity
Analysis date:
2021-08-24 07:16:34 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/2363b4a6-8b4c-434f-bf6e-868bb6b82a73

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/181773/
Detection(s):
Porcupine.Win32.Kryptik.HMEN.101430.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Launching a process
Launching cmd.exe command interpreter
Sending a UDP request
DNS request
Connection attempt
Sending an HTTP GET request
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
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/9446aa4c-8196-40c7-9653-a212d3dca075
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/838041
Signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found malware configuration
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 (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 470474 Sample: rockk231009.exe Startdate: 24/08/2021 Architecture: WINDOWS Score: 100 30 www.fbrblog.com 2->30 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 6 other signatures 2->44 11 rockk231009.exe 1 2->11         started        signatures3 process4 signatures5 54 Detected unpacking (changes PE section rights) 11->54 56 Maps a DLL or memory area into another process 11->56 58 Tries to detect virtualization through RDTSC time measurements 11->58 14 rockk231009.exe 11->14         started        17 conhost.exe 11->17         started        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 19 explorer.exe 14->19 injected process8 dnsIp9 32 www.laive.chat 104.21.18.68, 49717, 80 CLOUDFLARENETUS United States 19->32 34 www.templabels.com 75.2.18.233, 49720, 80 AMAZON-02US United States 19->34 36 2 other IPs or domains 19->36 46 System process connects to network (likely due to code injection or exploit) 19->46 23 control.exe 19->23         started        signatures10 process11 signatures12 48 Modifies the context of a thread in another process (thread injection) 23->48 50 Maps a DLL or memory area into another process 23->50 52 Tries to detect virtualization through RDTSC time measurements 23->52 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c2bde78efbaeb33b33e000a332b10191adf6c2b1e5d30d8cb3a9042419e97922/
Threat name:
Win32.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-08-23 15:25:10 UTC
AV detection:
23 of 46 (50.00%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yk66pdx3v2ztwm7aacrtfmibsgw7nqvr4xjq3dftveccigpjpera._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0fd4759551d1a32568250aac71951d0eec9d673e205644a45e9cbf2192de2c40
Formbook
42f8e33a2ee49ddb75c5e436fb1c9279afb9f19b93103fb0a55304447a64eb4d
Formbook
497d83f4debdbc49d2cfb27433de383cd4aac3061bde01e4799d0274a3ef5615
Formbook
b61a75bab2f47f346ccd0e0e58e748092b90ec271588c5aab7b9370d30c8eeda
Formbook
d12401aff6e577ad268923a0310d09931870ad0f5c557245376ca0487e4be96d
Formbook
e197309f79a43cdeccdc0b69344a36abc6c23fb8eef66063e4eb5cc443ee9d4d
Formbook
f4171526b06d5a9c867e81cd7d8a808fd0897209e18005fe83a969324321bacd
Formbook
+ 8'331 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:k1rc rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/210824-9ah57jbnta/
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 UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.fbrblog.com/k1rc/
Unpacked files
SH256 hash:
af4866e6995a9fee2a6c7e5c6e1bcda196c1174740a8b13b74adcf28de1ad0df
MD5 hash:
1631da1a076efcd8bd8fd111724b99ce
SHA1 hash:
01f1909cbe6f944862657ed8aa5d3db84a4a6ae3
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/73851cd2-051f-471e-826a-1f4522a7d6d7/
Parent samples :
0fd4759551d1a32568250aac71951d0eec9d673e205644a45e9cbf2192de2c40
d12401aff6e577ad268923a0310d09931870ad0f5c557245376ca0487e4be96d
497d83f4debdbc49d2cfb27433de383cd4aac3061bde01e4799d0274a3ef5615
9f8faf1ca8d3262940620bcb00487188e8657336cc3cb498ba4ad90ae96a59af
42f8e33a2ee49ddb75c5e436fb1c9279afb9f19b93103fb0a55304447a64eb4d
c2bde78efbaeb33b33e000a332b10191adf6c2b1e5d30d8cb3a9042419e97922
SH256 hash:
c2bde78efbaeb33b33e000a332b10191adf6c2b1e5d30d8cb3a9042419e97922
MD5 hash:
1d2dbd02a4482c9a82a3df5f2aee0ff8
SHA1 hash:
a7ded6e68dea6241c71fb0f5afc79dc94babb275
Link:
https://www.unpac.me/results/73851cd2-051f-471e-826a-1f4522a7d6d7/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.13
Link:
https://yomi.yoroi.company/submissions/c2bde78efbaeb33b33e000a332b10191adf6c2b1e5d30d8cb3a9042419e97922

File information

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

Malspam

Formbook

Executable exe c2bde78efbaeb33b33e000a332b10191adf6c2b1e5d30d8cb3a9042419e97922

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/181773/

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