MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c4ec6438a210e79f2a9404833a59fa0ecf9bfe9c27e0e31ef84ee0b65a81a83c. 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 5 File information Comments
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SHA256 hash: c4ec6438a210e79f2a9404833a59fa0ecf9bfe9c27e0e31ef84ee0b65a81a83c
SHA3-384 hash: 4bf0f91bd81d172acb8b76fa87a976f5b38b6aa4aaebc6deb9af5e51c8ec8a963e5fcd5650e7b0439c4feeaa5e69f501
SHA1 hash: ebff36dfd1752f85b6021f08c1cb17fc9f644c70
MD5 hash: 07bdbb2bf9540553548b97d0cedcff43
humanhash: sad-pennsylvania-aspen-pip
File name:Irhmffkzizuvmw.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:808'960 bytes
First seen:2023-07-21 08:54:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash da21ccc93f3893853ed8366aca50ca61 (3 x Formbook, 1 x RemcosRAT, 1 x ModiLoader)
ssdeep 24576:rk/A25GoqxIJs7ks3XJrPz6cDCnvMJqv9:rKAKGj7ks35rPmaCnvMUv9
Threatray 3'340 similar samples on MalwareBazaar
TLSH T1CE05AE20F2628473F2726E34DC1657685A74BE60253C20167AD63DEDEF7B3916C2A2C7
TrID 84.9% (.EXE) Win32 Executable Borland Delphi 6 (262638/61)
4.5% (.EXE) Win32 Executable Delphi generic (14182/79/4)
4.2% (.SCR) Windows screen saver (13097/50/3)
2.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
1.4% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 80ace0c4e4d09000 (5 x Formbook, 4 x ModiLoader, 3 x RemcosRAT)
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
344
Origin country :
PL PL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
zip-msg.eml
Verdict:
Malicious activity
Analysis date:
2023-07-21 07:33:17 UTC
Tags:
dbatloader
Link:
https://app.any.run/tasks/f5ae95a6-4e54-4297-9ca2-1d57971fed90

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/427369/
Detection(s):
SecuriteInfo.com.Heur.20230720143030221349905.UNOFFICIAL
Create hunting rule

Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c4ec6438a210e79f2a9404833a59fa0ecf9bfe9c27e0e31ef84ee0b65a81a83c
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:
Dbatloader
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1785e733-9af7-4027-ae69-322bf53b73cc
Result
Threat name:
DBatLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1277326
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
Drops PE files with a suspicious file extension
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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)
Multi AV Scanner detection for domain / URL
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
Writes to foreign memory regions
Yara detected DBatLoader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1277326 Sample: Irhmffkzizuvmw.exe Startdate: 21/07/2023 Architecture: WINDOWS Score: 100 40 www.nathanmartinez.digital 2->40 68 Snort IDS alert for network traffic 2->68 70 Multi AV Scanner detection for domain / URL 2->70 72 Found malware configuration 2->72 74 7 other signatures 2->74 11 Irhmffkzizuvmw.exe 1 2 2->11         started        signatures3 process4 dnsIp5 54 web.fe.1drv.com 11->54 56 pxczna.ph.files.1drv.com 11->56 58 2 other IPs or domains 11->58 38 C:\Users\Public\Libraries\Irhmffkz.PIF, PE32 11->38 dropped 92 Drops PE files with a suspicious file extension 11->92 94 Writes to foreign memory regions 11->94 96 Allocates memory in foreign processes 11->96 98 2 other signatures 11->98 16 logagent.exe 11->16         started        file6 signatures7 process8 signatures9 60 Modifies the context of a thread in another process (thread injection) 16->60 62 Maps a DLL or memory area into another process 16->62 64 Sample uses process hollowing technique 16->64 66 2 other signatures 16->66 19 explorer.exe 8 7 16->19 injected process10 dnsIp11 42 www.silkyflawless.com 45.33.23.183, 49714, 80 LINODE-APLinodeLLCUS United States 19->42 44 www.anniebapartments.com 206.188.193.90, 49709, 80 DEFENSE-NETUS United States 19->44 46 12 other IPs or domains 19->46 76 System process connects to network (likely due to code injection or exploit) 19->76 23 Irhmffkz.PIF 19->23         started        27 cmmon32.exe 19->27         started        29 wlanext.exe 19->29         started        signatures12 process13 dnsIp14 48 web.fe.1drv.com 23->48 50 pxczna.ph.files.1drv.com 23->50 52 2 other IPs or domains 23->52 78 Multi AV Scanner detection for dropped file 23->78 80 Machine Learning detection for dropped file 23->80 82 Writes to foreign memory regions 23->82 90 3 other signatures 23->90 31 colorcpl.exe 2 23->31         started        84 Modifies the context of a thread in another process (thread injection) 27->84 86 Maps a DLL or memory area into another process 27->86 88 Tries to detect virtualization through RDTSC time measurements 27->88 34 cmd.exe 27->34         started        signatures15 process16 signatures17 100 Modifies the context of a thread in another process (thread injection) 31->100 102 Maps a DLL or memory area into another process 31->102 104 Sample uses process hollowing technique 31->104 106 Tries to detect virtualization through RDTSC time measurements 31->106 36 conhost.exe 34->36         started        process18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c4ec6438a210e79f2a9404833a59fa0ecf9bfe9c27e0e31ef84ee0b65a81a83c/
Threat name:
Win32.Backdoor.Quakbot
Create hunting rule
Status:
Malicious
First seen:
2023-07-20 07:01:55 UTC
File Type:
PE (Exe)
Extracted files:
30
AV detection:
23 of 25 (92.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ytwgiofccdtz6kuuasbtuwp2b3hzx7u4e7qoghxyj3qlmwubva6a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
35c2ee1406834ee537a4c945e4755f53272d46241402e96c77d0deb505c9e52b
Formbook
3bfaaf7436f93dff822a8c0f81f2e805f1c6855da29e1ee3ddd6d18c04744ae8
Formbook
96bde9151480b20318275c2c0e045dc13486a76cf81465e4e02ad97cf37140b0
Formbook
99cd4e51fb0f2d9ba76ee4d12afd5c3cd096f0c390ecf657ea3a3d78158451ef
Formbook
b2d9890dbbc344c79e99127f7aebf3f459349081c2033e5288128bd2cb37a8b4
Formbook
bec4ef3573fb041d4a688c353f4682186f2bfe3918e9add4b9c5ceda5ec2627c
Formbook
e4a8a88bffaf744487df4bfd56f975542f59efb4aabe037f2ce5baea61875f98
Formbook
+ 3'330 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:modiloader family:xloader campaign:euv4 loader persistence rat trojan
Link:
https://tria.ge/reports/230721-kvfb5sdc95/
Behaviour
Script User-Agent
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
ModiLoader Second Stage
Xloader payload
ModiLoader, DBatLoader
Suspicious use of NtCreateProcessOtherParentProcess
Xloader
Unpacked files
SH256 hash:
c4ec6438a210e79f2a9404833a59fa0ecf9bfe9c27e0e31ef84ee0b65a81a83c
MD5 hash:
07bdbb2bf9540553548b97d0cedcff43
SHA1 hash:
ebff36dfd1752f85b6021f08c1cb17fc9f644c70
Detections:
DbatLoaderStage1
Create hunting rule
Link:
https://www.unpac.me/results/2ac07901-a3c9-442e-b1cf-ac8975e52d04/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c4ec6438a210/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.39
Link:
https://yomi.yoroi.company/submissions/c4ec6438a210e79f2a9404833a59fa0ecf9bfe9c27e0e31ef84ee0b65a81a83c

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:CMD_Ping_Localhost
Create hunting rule
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Typical_Malware_String_Transforms
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Typical_Malware_String_Transforms_RID3473
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research

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/427369/

Comments