MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e8475fe3ac277d2eda466aaa4d42044d7230ac650b62dde38bf9727514c3ad69. 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



Kimsuky


Vendor detections: 11


Maldoc score: 13


Intelligence 11 IOCs YARA 5 File information Comments

SHA256 hash: e8475fe3ac277d2eda466aaa4d42044d7230ac650b62dde38bf9727514c3ad69
SHA3-384 hash: 0dc415ced911b85d4cc16d61bc8d9ebe5c47757c01fc7c0f996f3fa6f5947225885a905c5fca9355e8a6a467e44ae12a
SHA1 hash: 3978abfd510cafbda865b708d6896560fede9a32
MD5 hash: e0cf0881de0fe35732bb02c1f4df02a3
humanhash: snake-bravo-tennis-iowa
File name:협의 이혼 의사 확인 신청서.doc
Download: download sample
Signature Kimsuky
File size:62'545 bytes
First seen:2023-03-16 16:27:53 UTC
Last seen:Never
File type:Word file doc
MIME type:application/vnd.openxmlformats-officedocument.wordprocessingml.document
ssdeep 1536:Am0nG0R5fPNK0kspG12qchCSImAGnkRLiNVQEvEqJB7fhkxn:QG6dKxAqAYi9bNVQ8Zjaxn
TLSH T12853D11B89458E0BD1A7D37CFF070A98DB281B15644737DB802289DFDBA07A72D6D89C
TrID 53.0% (.DOCM) Word Microsoft Office Open XML Format document (with Macro) (52000/1/9)
23.9% (.DOCX) Word Microsoft Office Open XML Format document (23500/1/4)
17.8% (.ZIP) Open Packaging Conventions container (17500/1/4)
4.0% (.ZIP) ZIP compressed archive (4000/1)
1.0% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1)
Reporter Jagdtiger88mm
Tags:doc Kimsuky malicious

Office OLE Information


This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 13
OLE dump

MalwareBazaar was able to identify 7 sections in this file using oledump:

Section IDSection sizeSection name
A1412 bytesPROJECT
A271 bytesPROJECTwm
A33515 bytesVBA/NewMacros
A4938 bytesVBA/ThisDocument
A53181 bytesVBA/_VBA_PROJECT
A6570 bytesVBA/dir
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecAutoOpenRuns when the Word document is opened
IOCwscript.exeExecutable file name
SuspiciousopenMay open a file
SuspiciousCreateMay execute file or a system command through WMI
SuspiciousCreateObjectMay create an OLE object
SuspiciousGetObjectMay get an OLE object with a running instance
SuspiciousMSXML2.ServerXMLHTTPMay download files from the Internet
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence


File Origin
# of uploads :
1
# of downloads :
346
Origin country :
KR KR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
협의 이혼 의사 확인 신청서.doc
Verdict:
Malicious activity
Analysis date:
2023-03-16 16:24:06 UTC
Tags:
macros macros-on-open

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Using the Windows Management Instrumentation requests
Possible injection to a system process
Bypassing of proactive protection methods using Windows Management Instrumentation (WMI)
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Word File with Macro
Behaviour
BlacklistAPI detected
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm hancitor macros macros-on-open wscript wscript.exe
Label:
Malicious
Suspicious Score:
7.2/10
Score Malicious:
72%
Score Benign:
28%
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl.evad
Score:
80 / 100
Signature
Creates processes via WMI
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
System process connects to network (likely due to code injection or exploit)
Wscript called in batch mode (surpress errors)
Behaviour
Behavior Graph:
Threat name:
Document-Word.Trojan.RealProtect
Status:
Malicious
First seen:
2023-03-13 07:39:35 UTC
File Type:
Document
Extracted files:
26
AV detection:
15 of 39 (38.46%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
NTFS ADS
Script User-Agent
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: RenamesItself
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Legitimate hosting services abused for malware hosting/C2
Deletes itself
Blocklisted process makes network request
Process spawned unexpected child process
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:BitcoinAddress
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:malware_shellcode_hash
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:meth_get_eip
Author:Willi Ballenthin
Rule name:pdb_YARAify
Author:@wowabiy314
Description:PDB
Rule name:vbaproject_bin
Author:CD_R0M_
Description:{76 62 61 50 72 6f 6a 65 63 74 2e 62 69 6e} is hex for vbaproject.bin. Macros are often used by threat actors. Work in progress - Ran out of time

File information


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

Comments