MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ecf3c66677e8575d09704f7775cf54c15569eb647376f04a887624018b568814. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ecf3c66677e8575d09704f7775cf54c15569eb647376f04a887624018b568814
SHA3-384 hash: 85e291475acd4b313ceb4ae34fe1962f7a48823dda386c0d1a63cb34d1046bcf50c0cc6fc8a03850da31eb66213f1f57
SHA1 hash: 08995c98af5a843e207f6e80f972e0d6a4206484
MD5 hash: d8d8690795aa3b38af0dd78fe97452aa
humanhash: colorado-jupiter-aspen-nevada
File name:QTE00038319.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:419'257 bytes
First seen:2022-05-11 08:26:49 UTC
Last seen:2022-05-11 12:08:00 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 431 x GuLoader)
ssdeep 6144:8OtI3eYvYl0BjO73Pp5hn3FW5yga6Z2pFHnhPijJzK+m9hYXBJvqNa8y1I6ziDLF:8OSBybd85zN2pFHh6sOTGLQ5mGA
Threatray 15'236 similar samples on MalwareBazaar
TLSH T17B94E192A45485DBED7843B39C3B891929E67C7EE9F0912F87AAF52597332C30017D0B
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 134b093141233b45 (1 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
258
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/269630/
Detection(s):
SecuriteInfo.com.Gen.Variant.Nemesis.5760.2601.28711.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Reading critical registry keys
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/17104/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe lokibot nemesis overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/627b735abe0219041a9232bc/reports/e6c85906-b2ce-4535-a7ce-58e8c8f64f84/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/037810c7-9db9-4bcd-9d29-2e3822e827af
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/991693
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
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)
Multi AV Scanner detection for dropped file
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 netstat to query active network connections and open ports
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 624189 Sample: QTE00038319.exe Startdate: 11/05/2022 Architecture: WINDOWS Score: 100 32 www.syuchan.com 2->32 34 www.consilium.site 2->34 48 Snort IDS alert for network traffic 2->48 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 4 other signatures 2->54 11 QTE00038319.exe 19 2->11         started        signatures3 process4 file5 30 C:\Users\user\AppData\Local\...\yuembtz.exe, PE32 11->30 dropped 14 yuembtz.exe 11->14         started        process6 signatures7 64 Multi AV Scanner detection for dropped file 14->64 66 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 14->66 68 Uses netstat to query active network connections and open ports 14->68 70 2 other signatures 14->70 17 yuembtz.exe 14->17         started        process8 signatures9 40 Modifies the context of a thread in another process (thread injection) 17->40 42 Maps a DLL or memory area into another process 17->42 44 Sample uses process hollowing technique 17->44 46 Queues an APC in another process (thread injection) 17->46 20 NETSTAT.EXE 17->20         started        23 explorer.exe 17->23 injected process10 dnsIp11 56 Modifies the context of a thread in another process (thread injection) 20->56 58 Maps a DLL or memory area into another process 20->58 60 Tries to detect virtualization through RDTSC time measurements 20->60 26 cmd.exe 1 20->26         started        36 www.qqwoai.com 38.63.38.45, 49848, 80 COGENT-174US United States 23->36 38 www.couplecam.life 23->38 62 System process connects to network (likely due to code injection or exploit) 23->62 signatures12 process13 process14 28 conhost.exe 26->28         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ecf3c66677e8575d09704f7775cf54c15569eb647376f04a887624018b568814/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-11 06:47:17 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5tz4mztx5blv2clqj53xlt2uyfkwt23eon3pasuioysadc2wraka._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
3bdf54d6b07a96a026ed34f1db8d5cc442c1a211d02ff888659d7263ccc77c4c
Formbook
73a92bd6fa63983c7597d29e037e8c07c30c6f3e93fb715f446fefdbc1cdf53f
Formbook
bea7dde650c823aa2887bc7065abd818c02e573c041ea69c1ea60c43fe1a79df
Formbook
c229dfc2fbeae18ab1517a096e4b53639144648a9e6d1bd74d0174ce90a4ecb6
Formbook
d7dc569e0cf8cc6afc0a4a922263195ea12051b1db428fcf9fba724d90261a5e
Formbook
eba97a314b1c02ecdd75fe691c6883b214dc0b239d0ba39b7d578162b5218ad0
Formbook
f156099a9282dcdcab3acbf57c50bc1d0121a6e9714d43ba69ab9934ab0d9439
Formbook
+ 15'226 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:guba loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220511-kceb5aahdr/
Behaviour
Modifies Internet Explorer settings
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
System policy modification
Enumerates physical storage devices
Program crash
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Reads user/profile data of web browsers
Adds policy Run key to start application
Blocklisted process makes network request
Executes dropped EXE
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
eea7f105dcf9f027c28625c76665fc5fe5aff6eb800f0fd4cad12ec873c80f60
MD5 hash:
006a941747d8503fe04f5f409e857fee
SHA1 hash:
70f70de32ccff4d8ff8b6bec5a1a3d14841c0f36
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/a340a799-e700-4bfc-9a72-1c4ad1423a85/
Parent samples :
99d57ebcb7ed9d644b1cab9bea20f0a6ff430239fddecb5a2c1586dd9018d0e2
ecf3c66677e8575d09704f7775cf54c15569eb647376f04a887624018b568814
SH256 hash:
bb7bb59c1b9233838e51aff754f4d2b65dbf2953f80cb38f1fc56be45d713708
MD5 hash:
0994911ac36c089bac7dec4719e8d2a1
SHA1 hash:
b3b9a73b7402854e1e089fa7e1e28656a3e83afa
Link:
https://www.unpac.me/results/a340a799-e700-4bfc-9a72-1c4ad1423a85/
SH256 hash:
ecf3c66677e8575d09704f7775cf54c15569eb647376f04a887624018b568814
MD5 hash:
d8d8690795aa3b38af0dd78fe97452aa
SHA1 hash:
08995c98af5a843e207f6e80f972e0d6a4206484
Link:
https://www.unpac.me/results/a340a799-e700-4bfc-9a72-1c4ad1423a85/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ecf3c66677e8575d09704f7775cf54c15569eb647376f04a887624018b568814

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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.

Malspam

Formbook

Executable exe ecf3c66677e8575d09704f7775cf54c15569eb647376f04a887624018b568814

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/269630/

Comments