MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c81fdf79b9dac3c659e6c56f5c450057f489f37365091aa8677181574f2bf2a. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8c81fdf79b9dac3c659e6c56f5c450057f489f37365091aa8677181574f2bf2a
SHA3-384 hash: 563afa7de9efba25e0c26cc2914c68aed881e0b80999ab13fee5c05fd411666d81c6f810c6ef17b81266f2cb02d66168
SHA1 hash: 4391d8da6d620d6191a4c528004e01ae4751dd03
MD5 hash: 9460df255f36342f597a765e10cb07d0
humanhash: monkey-orange-seven-violet
File name:8c81fdf79b9dac3c659e6c56f5c450057f489f37365091aa8677181574f2bf2a
Download: download sample
Signature Kimsuky
Create hunting rule
File size:619'520 bytes
First seen:2022-03-18 09:49:47 UTC
Last seen:Never
File type:DLL dll
MIME type:application/x-dosexec
imphash 25a5577a8dcab4be05a3625debbd4e4f (1 x Kimsuky)
ssdeep 12288:RcUPZGpm5MQuh2llwQTS1BGv0UmX1tchjeuArs1ujzPaQeBuLJfcUvcN:Tgpm5DWMTTS20UmX1GhjZ+zPUocN
Threatray 10 similar samples on MalwareBazaar
TLSH T122D42349BA4D13B9C883FF3E5DB5E42AA3369400162D021DBCCD4F5B1D96067392F39A
Reporter JAMESWT_WT
Tags:dll Kimsuky

Intelligence

File Origin
# of uploads :
1
# of downloads :
145
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/252391/
Detection(s):
SecuriteInfo.com.Trojan.Heur.LC8@u4aWoUmi.24129.14421.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Running batch commands
Using the Windows Management Instrumentation requests
Searching for the window
Launching a tool to kill processes
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
explorer.exe packed shell32.dll winnti
Link:
https://www.filescan.io/uploads/623455dab94fb38cb4a1cc14/reports/2e95eef8-90a7-4543-a1c8-010566601b23/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/66e72900-8162-48c0-9f49-182f6d6f54d0
Result
Threat name:
Unknown
Detection:
malicious
Classification:
evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/959828
Signature
Allocates memory in foreign processes
Detected VMProtect packer
Found evasive API chain (trying to detect sleep duration tampering with parallel thread)
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Call by Ordinal
Sigma detected: Suspicious Svchost Process
Writes to foreign memory regions
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 592311 Sample: r5McKwCd1v Startdate: 18/03/2022 Architecture: WINDOWS Score: 100 87 Malicious sample detected (through community Yara rule) 2->87 89 Multi AV Scanner detection for dropped file 2->89 91 Multi AV Scanner detection for submitted file 2->91 93 6 other signatures 2->93 11 loaddll32.exe 1 2->11         started        13 rundll32.exe 2->13         started        15 rundll32.exe 2->15         started        process3 process4 17 cmd.exe 1 11->17         started        19 rundll32.exe 6 11->19         started        22 rundll32.exe 6 11->22         started        24 rundll32.exe 11->24         started        26 rundll32.exe 13->26         started        signatures5 28 rundll32.exe 5 17->28         started        95 Found evasive API chain (trying to detect sleep duration tampering with parallel thread) 19->95 30 cmd.exe 1 19->30         started        32 WerFault.exe 19->32         started        34 cmd.exe 1 22->34         started        36 WerFault.exe 22->36         started        38 cmd.exe 1 24->38         started        40 WerFault.exe 9 24->40         started        97 Writes to foreign memory regions 26->97 99 Allocates memory in foreign processes 26->99 101 Injects a PE file into a foreign processes 26->101 42 svchost.exe 26->42         started        process6 process7 44 cmd.exe 1 28->44         started        46 rundll32.exe 1 8 28->46         started        49 WerFault.exe 28->49         started        52 taskkill.exe 1 30->52         started        54 conhost.exe 30->54         started        60 2 other processes 34->60 56 taskkill.exe 1 38->56         started        58 conhost.exe 38->58         started        62 42 other processes 42->62 dnsIp8 64 conhost.exe 44->64         started        66 taskkill.exe 1 44->66         started        81 C:\Users\user\AppData\...\SysCertUp.dll, PE32 46->81 dropped 83 C:\Users\...\SysCertUp.dll:Zone.Identifier, ASCII 46->83 dropped 68 cmd.exe 1 46->68         started        70 WerFault.exe 46->70         started        85 192.168.2.1 unknown unknown 49->85 file9 process10 process11 72 rundll32.exe 64->72         started        75 taskkill.exe 1 68->75         started        77 conhost.exe 68->77         started        signatures12 103 Writes to foreign memory regions 72->103 105 Allocates memory in foreign processes 72->105 107 Injects a PE file into a foreign processes 72->107 79 svchost.exe 72->79         started        process13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8c81fdf79b9dac3c659e6c56f5c450057f489f37365091aa8677181574f2bf2a/
Threat name:
Win32.Trojan.Kimsuky
Create hunting rule
Status:
Malicious
First seen:
2022-01-12 06:46:00 UTC
File Type:
PE (Dll)
Extracted files:
1
AV detection:
20 of 27 (74.07%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
1aa23a53ad457b7a374cba2c3e378f486a7887dffd8791292a1bf3d8124ac25c
Kimsuky
4c6f0294b0ede5a8663a2186bf2368e243d03c94b3b91d851b03a9562b5594d3
Kimsuky
727bc43e3d9cdf3e79c2232cf3f647bdf94ad2012c31403434c17e5bbeb3c339
Kimsuky
9f86527e3ca4530bb3209d8608dae083afab4ef2cf7b0ae23bcd6fdc322a0c33
Kimsuky
a4c1b4defad0f0e3efac5ce2d045b75c1715bcf9192e27eb244429eb9ea3bb00
Kimsuky
baa64a07d699b89e8715fe38010305c8b42fcb15384550d7cb56f44a71894490
Kimsuky
bceed9a182b9324426c40327f10948d0ebdef8c9d4559e476e4f14b9d11a7ea3
Kimsuky
e2cfdb4ff5c27aa1a10a7748bf005f03d7d3562257eb10c434456ae77917898d
Kimsuky
e63ae6b6a21682cc06993ce09d717f3713b04a84b5567653bd8ccfdba1f89f06
Kimsuky
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence spyware stealer vmprotect
Link:
https://tria.ge/reports/220318-lty9ashaa9/
Behaviour
Enumerates processes with tasklist
Gathers network information
Gathers system information
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
VMProtect packed file
Unpacked files
SH256 hash:
82202cc146407cfec0cc58f080bad8b4ad78f969568d173bffe5fb74e88caf56
MD5 hash:
5c4abd8414ba5c8e63bff3634574a6c7
SHA1 hash:
99b21c1007067c29324dc3eb5f66c1ac9d2300a0
Link:
https://www.unpac.me/results/9d589faa-ef91-4a09-be17-6545c48ca679/
SH256 hash:
8c81fdf79b9dac3c659e6c56f5c450057f489f37365091aa8677181574f2bf2a
MD5 hash:
9460df255f36342f597a765e10cb07d0
SHA1 hash:
4391d8da6d620d6191a4c528004e01ae4751dd03
Link:
https://www.unpac.me/results/9d589faa-ef91-4a09-be17-6545c48ca679/
Malware family:
Winnti Group
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/8c81fdf79b9d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/8c81fdf79b9dac3c659e6c56f5c450057f489f37365091aa8677181574f2bf2a

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_EXE_Packed_VMProtect
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with VMProtect.
Rule name:Winnti_NlaifSvc
Create hunting rule
Author:Florian Roth
Description:Winnti sample - file NlaifSvc.dll
Reference:https://goo.gl/VbvJtL
Rule name:Winnti_NlaifSvc_RID2CFF
Create hunting rule
Author:Florian Roth
Description:Winnti sample - file NlaifSvc.dll
Reference:https://goo.gl/VbvJtL

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/252391/

Comments