MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 70c603d729b29c5029ee575d00c6001b75937fa9aac654a882e88df12a36869f. 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: 11


Intelligence 11 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 70c603d729b29c5029ee575d00c6001b75937fa9aac654a882e88df12a36869f
SHA3-384 hash: b5de336b85a88bd0d1aa68c58262f27a276ab1a18b64bd69aae74b6c693567e1645b541114926d1e0167d1acd3eed206
SHA1 hash: 9a5e375cf8a4f3fefe8e19dc35b8e2332e4294ac
MD5 hash: 4f21a7f867b8f191001b774784984182
humanhash: double-bacon-nuts-beer
File name:HALKBANK.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:25'088 bytes
First seen:2022-06-09 08:27:30 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 384:xujaegglD+DJib50nxp4dXHnpMMMDMMMQiU6Zt6:MHD+FibzdZMMMDMMMTZt6
TLSH T120B2B626D2BFF12FC5F5D970E892518612AAAD0D3C0DA92A74982F4E6536E443F13F13
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon c44484ad8d8aa444 (8 x SnakeKeylogger, 3 x Formbook, 3 x AgentTesla)
Reporter abuse_ch
Tags:exe FormBook geo Halkbank TUR

Intelligence

File Origin
# of uploads :
1
# of downloads :
307
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
HALKBANK.exe
Verdict:
Suspicious activity
Analysis date:
2022-06-10 00:31:19 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f5bf24d0-bd21-4d15-9b82-544970f0a144

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/278133/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Forced system process termination
DNS request
Sending a custom TCP request
Running batch commands
Creating a file in the %AppData% subdirectories
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62a1af30c221aaaa25c29aa0/reports/45339c45-717f-40ae-b93b-44b81b6b842c/overview
Result
Verdict:
SUSPICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/316bf480-56e2-46eb-910d-9ee6655e1f4e
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1009789
Signature
.NET source code contains potential unpacker
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 dropped file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 642281 Sample: HALKBANK.exe Startdate: 09/06/2022 Architecture: WINDOWS Score: 100 80 Malicious sample detected (through community Yara rule) 2->80 82 Yara detected FormBook 2->82 84 .NET source code contains potential unpacker 2->84 86 4 other signatures 2->86 10 HALKBANK.exe 16 7 2->10         started        process3 dnsIp4 70 cdn.discordapp.com 162.159.129.233, 443, 49761 CLOUDFLARENETUS United States 10->70 64 C:\Users\user\AppData\Roaming\...\Okvmcou.exe, PE32 10->64 dropped 66 C:\Users\user\...\Okvmcou.exe:Zone.Identifier, ASCII 10->66 dropped 68 C:\Users\user\AppData\...\HALKBANK.exe.log, ASCII 10->68 dropped 88 Writes to foreign memory regions 10->88 90 Injects a PE file into a foreign processes 10->90 15 InstallUtil.exe 10->15         started        18 cmd.exe 1 10->18         started        20 powershell.exe 15 10->20         started        file5 signatures6 process7 signatures8 92 Modifies the context of a thread in another process (thread injection) 15->92 94 Maps a DLL or memory area into another process 15->94 96 Sample uses process hollowing technique 15->96 98 2 other signatures 15->98 22 explorer.exe 15->22 injected 24 conhost.exe 18->24         started        26 timeout.exe 1 18->26         started        28 conhost.exe 20->28         started        process9 process10 30 Okvmcou.exe 14 4 22->30         started        34 Okvmcou.exe 22->34         started        36 msiexec.exe 22->36         started        dnsIp11 72 162.159.134.233, 443, 49857 CLOUDFLARENETUS United States 30->72 74 cdn.discordapp.com 30->74 100 Multi AV Scanner detection for dropped file 30->100 102 Machine Learning detection for dropped file 30->102 104 Writes to foreign memory regions 30->104 106 Injects a PE file into a foreign processes 30->106 38 cmd.exe 30->38         started        40 powershell.exe 14 30->40         started        42 InstallUtil.exe 30->42         started        76 162.159.133.233, 443, 49859 CLOUDFLARENETUS United States 34->76 78 cdn.discordapp.com 34->78 44 cmd.exe 34->44         started        46 powershell.exe 34->46         started        48 cmd.exe 36->48         started        signatures12 process13 process14 50 conhost.exe 38->50         started        52 timeout.exe 38->52         started        54 conhost.exe 40->54         started        56 conhost.exe 44->56         started        58 timeout.exe 44->58         started        60 conhost.exe 46->60         started        62 conhost.exe 48->62         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/70c603d729b29c5029ee575d00c6001b75937fa9aac654a882e88df12a36869f/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-06-09 08:28:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=oddahvzjwkofakpok5oqbrqadn2zg75jvldfjkec5cg7ckrwq2pq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
masslogger
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Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:e2e9 persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220609-kczytshah4/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Blocklisted process makes network request
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
70c603d729b29c5029ee575d00c6001b75937fa9aac654a882e88df12a36869f
MD5 hash:
4f21a7f867b8f191001b774784984182
SHA1 hash:
9a5e375cf8a4f3fefe8e19dc35b8e2332e4294ac
Link:
https://www.unpac.me/results/81a6b1b4-61d4-48f2-9828-f601e9889a04/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/70c603d729b2/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/70c603d729b29c5029ee575d00c6001b75937fa9aac654a882e88df12a36869f

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:INDICATOR_SUSPICIOUS_EXE_DiscordURL
Create hunting rule
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Discord_Attachments_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research

File information

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

Malspam

Formbook

Executable exe 70c603d729b29c5029ee575d00c6001b75937fa9aac654a882e88df12a36869f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/278133/

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