MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e58db2a0ff5965c97eeb52a3342e5a4ec06ff9d6beafbd7007e14368c5af64a4. 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 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e58db2a0ff5965c97eeb52a3342e5a4ec06ff9d6beafbd7007e14368c5af64a4
SHA3-384 hash: 8bf34fedb6da7122a89d8095a0270cde921d5603616d8b6dcc3d539bff5537ea241643b7f59c59a2702f875b579d5a65
SHA1 hash: d296840d38048e5c2ad0fbd6dc552f9082bdceec
MD5 hash: 4d720699e817806609ee380f5bca2b7c
humanhash: kentucky-jig-helium-island
File name:Kwserhekrq.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:8'704 bytes
First seen:2023-11-07 07:47:33 UTC
Last seen:2023-11-07 14:03:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'476 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 192:NXOKhwWfX31ZGq4/VPB/gh8RkfiH/6pNi:BJZfHjGhL/ghvauN
TLSH T16502D751D7E84333EA2F037ED8B343424778FB915C46EF5F388C6299AD026404DAA7A6
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
341
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.24707.24503.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
DNS request
Sending a custom TCP request
Launching a process
Creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6549ebb3946b6ab22459ef92/reports/53003fcd-96cd-470b-81a8-b4f70d9d9d6e/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/e58db2a0ff5965c97eeb52a3342e5a4ec06ff9d6beafbd7007e14368c5af64a4
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/685b5972-539f-4b02-a081-76b7a3123285
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1338089
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1338089 Sample: Kwserhekrq.exe Startdate: 07/11/2023 Architecture: WINDOWS Score: 100 26 www.victorviera.com 2->26 28 www.vibetemple.com 2->28 30 24 other IPs or domains 2->30 38 Multi AV Scanner detection for domain / URL 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus detection for URL or domain 2->42 44 6 other signatures 2->44 10 Kwserhekrq.exe 15 3 2->10         started        signatures3 process4 signatures5 54 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->54 56 Writes to foreign memory regions 10->56 58 Allocates memory in foreign processes 10->58 60 Injects a PE file into a foreign processes 10->60 13 aspnet_compiler.exe 10->13         started        16 aspnet_compiler.exe 10->16         started        process6 signatures7 62 Maps a DLL or memory area into another process 13->62 18 bVFSCNMqsaVRxdPZJ.exe 13->18 injected process8 dnsIp9 32 www.samatep.xyz 162.0.233.82, 49720, 49721, 49722 NAMECHEAP-NETUS Canada 18->32 34 credseg.com 162.240.81.18, 49706, 80 UNIFIEDLAYER-AS-1US United States 18->34 36 9 other IPs or domains 18->36 21 unregmp2.exe 13 18->21         started        process10 signatures11 46 Tries to steal Mail credentials (via file / registry access) 21->46 48 Tries to harvest and steal browser information (history, passwords, etc) 21->48 50 Writes to foreign memory regions 21->50 52 2 other signatures 21->52 24 firefox.exe 21->24         started        process12
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/e58db2a0ff5965c97eeb52a3342e5a4ec06ff9d6beafbd7007e14368c5af64a4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e58db2a0ff5965c97eeb52a3342e5a4ec06ff9d6beafbd7007e14368c5af64a4/
Threat name:
ByteCode-MSIL.Trojan.Msilzilla
Create hunting rule
Status:
Malicious
First seen:
2023-11-07 00:50:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
17 of 36 (47.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4wg3fih7lfs4s7xlkkrtils2j3ag76owx2x324ah4fbwrrnpmssa._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/231107-jm4jbseg37/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
e58db2a0ff5965c97eeb52a3342e5a4ec06ff9d6beafbd7007e14368c5af64a4
MD5 hash:
4d720699e817806609ee380f5bca2b7c
SHA1 hash:
d296840d38048e5c2ad0fbd6dc552f9082bdceec
Detections:
PureCrypter_Stage1
Create hunting rule
Link:
https://www.unpac.me/results/efde066c-7c78-4479-ba4e-9a5101f1ffeb/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e58db2a0ff59/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.97
Link:
https://yomi.yoroi.company/submissions/e58db2a0ff5965c97eeb52a3342e5a4ec06ff9d6beafbd7007e14368c5af64a4

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:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

Executable exe e58db2a0ff5965c97eeb52a3342e5a4ec06ff9d6beafbd7007e14368c5af64a4

(this sample)

  
Delivery method
Distributed via e-mail attachment

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