MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81b0a009c3b5f45ce6ad55d06621cdfc10e9331f7b2609f863f2470524ea6e1a. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81b0a009c3b5f45ce6ad55d06621cdfc10e9331f7b2609f863f2470524ea6e1a
SHA3-384 hash: 6f2198c783821d063f74c97e9b9c344825a5bcfdfd51f2e4f17e08471cc53660f249b5ed8a2dc9d992906d62971321d2
SHA1 hash: 31f4e9ebdf8dc78649968cbf2c169a030a6e4a82
MD5 hash: 3006fec418d082c5035d560a92d20e43
humanhash: fish-red-lima-jersey
File name:3006fec418d082c5035d560a92d20e43.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:300'670 bytes
First seen:2022-02-12 07:39:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 099c0646ea7282d232219f8807883be0 (476 x Formbook, 210 x Loki, 107 x AgentTesla)
ssdeep 6144:ow1PkCPcTkrekDnV5D/kxlzbvp0hl0YNnItRMt611CGM:BPkCUToekDnPDsxlxWJBno11NM
Threatray 13'029 similar samples on MalwareBazaar
TLSH T1BE54123B20EAC917C9A70A7441FD676BEFB9775002582E0F6B842F9F342A0C2B44D5D6
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
260
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/241048/
Detection(s):
SecuriteInfo.com.FakeAV.CXA.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
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Launching a process
Searching for synchronization primitives
DNS request
Reading critical registry keys
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6207645745ddfa2e18c2f69d/reports/c1810aa7-9823-43a8-b886-94a1e522ac85/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/9721dbdb-0fa2-4d99-af2a-83ca54f441f8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/938715
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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)
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
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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: 571193 Sample: zhzEdK5VR3.exe Startdate: 12/02/2022 Architecture: WINDOWS Score: 100 44 www.stichmarketing.com 2->44 46 www.royalprestigehospitality.com 2->46 48 3 other IPs or domains 2->48 62 Found malware configuration 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 Antivirus detection for URL or domain 2->66 68 6 other signatures 2->68 11 zhzEdK5VR3.exe 19 2->11         started        signatures3 process4 file5 40 C:\Users\user\AppData\Local\...\fbpunnkh.exe, PE32 11->40 dropped 14 fbpunnkh.exe 1 2 11->14         started        process6 file7 42 C:\Users\user\AppData\Roaming\...\iqrtsas.exe, PE32 14->42 dropped 80 Multi AV Scanner detection for dropped file 14->80 82 Tries to detect virtualization through RDTSC time measurements 14->82 18 fbpunnkh.exe 14->18         started        signatures8 process9 signatures10 54 Modifies the context of a thread in another process (thread injection) 18->54 56 Maps a DLL or memory area into another process 18->56 58 Sample uses process hollowing technique 18->58 60 Queues an APC in another process (thread injection) 18->60 21 explorer.exe 18->21 injected process11 process12 23 rundll32.exe 12 21->23         started        27 iqrtsas.exe 21->27         started        29 iqrtsas.exe 21->29         started        dnsIp13 50 www.gutimautpribuinropgroup.com 162.144.34.39, 80 UNIFIEDLAYER-AS-1US United States 23->50 70 System process connects to network (likely due to code injection or exploit) 23->70 72 Modifies the context of a thread in another process (thread injection) 23->72 74 Maps a DLL or memory area into another process 23->74 76 Tries to detect virtualization through RDTSC time measurements 23->76 31 explorer.exe 1 158 23->31         started        34 explorer.exe 23->34         started        78 Multi AV Scanner detection for dropped file 27->78 36 WerFault.exe 23 9 27->36         started        38 WerFault.exe 2 9 29->38         started        signatures14 process15 dnsIp16 52 192.168.2.1 unknown unknown 31->52
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/81b0a009c3b5f45ce6ad55d06621cdfc10e9331f7b2609f863f2470524ea6e1a/
Threat name:
Win32.Trojan.Tnega
Create hunting rule
Status:
Malicious
First seen:
2022-02-12 01:04:54 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qgykacodwx2fzzvnkxigmion7qiosmy7pmtat6dd6jdqkjhknyna._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
3d0defc77abb415c8854149e73e067b94bdb3fdc638fa7e104bcc4a325dc658a
Formbook
4c1916f66fa05e3ce6bfc378af5ca0afb182fc1f5b866e8f5b86eaf0c1300015
Formbook
4d1ac5962b58c0bf6386b85fc1c2029efb0c8d5ccf0054733795eec1ea8b3291
Formbook
76d07b33364445e08dd5306a4e98d34edb6895a8269e9bb5aa9ef80e1cb83b2e
Formbook
88d97538adda1f29e2f088883d64db0776c2f7e9c80a2a789785c4af970ec129
Formbook
b1e2238ed835357f061456c7a38d0620cef8b78f0e1a9856133cc5b2805e0ed1
Formbook
cee15feb69864e35edc6d39487656a0a2679c76348cd621de043d0242c3f25e4
Formbook
d2cc3484cdabe8305bf9afd35530ca1118ca2c308408dc7140c3a94b392b60bb
Formbook
dbc4b30858a2fa9f7001f2347e1cb88f660b8e6651962519b78a7978c6cc2d72
Formbook
+ 13'019 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/220212-jhkknahfe5/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Unpacked files
SH256 hash:
3fa5c05452d4ed129735fc73826cbab38bf3371d5b84419bbaef2b0d5afb77e4
MD5 hash:
56dff61da653c874cb593f9839713bae
SHA1 hash:
34d45a86db9544183f765dbcb9edcffa10494d5d
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0cef8561-8ae9-498e-886f-3c80f1d7a734/
Parent samples :
d79e66a74933a4b81b554372e47e6e5f7bb2d2b066de31289715bbd0de5b0718
3d0defc77abb415c8854149e73e067b94bdb3fdc638fa7e104bcc4a325dc658a
81b0a009c3b5f45ce6ad55d06621cdfc10e9331f7b2609f863f2470524ea6e1a
22d5552fed81b606509972d3c12830cd2cfcd77ec68a8791706099e97b2c1bad
SH256 hash:
f97dc04f19d84d0a1fb7109346e5bed0ce4164736a197811b47cf7eca9b96fdf
MD5 hash:
3bb203247d13d0eece6644e3ef08b116
SHA1 hash:
4710ee31881aa607d6a467f1e0f7d1387cba2e34
Link:
https://www.unpac.me/results/0cef8561-8ae9-498e-886f-3c80f1d7a734/
SH256 hash:
81b0a009c3b5f45ce6ad55d06621cdfc10e9331f7b2609f863f2470524ea6e1a
MD5 hash:
3006fec418d082c5035d560a92d20e43
SHA1 hash:
31f4e9ebdf8dc78649968cbf2c169a030a6e4a82
Link:
https://www.unpac.me/results/0cef8561-8ae9-498e-886f-3c80f1d7a734/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:exec_macros
Create hunting rule
Author:ddvvmmzz
Description:exec macros
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:obfuscate_macros
Create hunting rule
Author:ddvvmmzz
Description:obfuscate macros
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.

Web download

Formbook

Executable exe 81b0a009c3b5f45ce6ad55d06621cdfc10e9331f7b2609f863f2470524ea6e1a

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/241048/
  
URLhaus
https://urlhaus.abuse.ch/url/2033765/
  
Delivery method
Distributed via web download

Comments