18be193dcaf3096c7e56437a14513073beb8a2ba99b84a3a2aa0cec44f3369e5

Analysis

max time kernel
92s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27-03-2024 17:36

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General

Target

e23724d5289b98cfd5d86bd302707159.exe
Size

54KB
MD5

e23724d5289b98cfd5d86bd302707159
SHA1

ccfc35574f4b3ca72aecd86d90e0b921f26ddb45
SHA256

18be193dcaf3096c7e56437a14513073beb8a2ba99b84a3a2aa0cec44f3369e5
SHA512

15f2193e018ff3e17c19da2570e5f37555e3f74efc9ad67f01b6ad8e9879efbd61724a53a5d95e4f0078c51ec9af5a4df61f01db7674c393b747e65139f0068a
SSDEEP

768:Oe3PFaDVyOQgljLDKRJyM3BmsHzSB4us/wJJapg4RoSMZeUZB/7pZjEcoy/v/Kxn:V3cpyORJLuB4P4AJJv4Romu/1BybS+V

Score

10^/10

evasion

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	e23724d5289b98cfd5d86bd302707159.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	e23724d5289b98cfd5d86bd302707159.exe

Loads dropped DLL 1 IoCs

pid	Process
1864	e23724d5289b98cfd5d86bd302707159.exe

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\Internat Explorer\Desktop.ini	e23724d5289b98cfd5d86bd302707159.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\Internat Explorer\Desktop.ini	e23724d5289b98cfd5d86bd302707159.exe
File created	C:\Program Files (x86)\Microsoft\Internat Explorer\target.lnk	e23724d5289b98cfd5d86bd302707159.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Internat Explorer	attrib.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.oc\ = "ocfile"	e23724d5289b98cfd5d86bd302707159.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\DefaultIcon	e23724d5289b98cfd5d86bd302707159.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile	e23724d5289b98cfd5d86bd302707159.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\shell\open	e23724d5289b98cfd5d86bd302707159.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.oc	e23724d5289b98cfd5d86bd302707159.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\DefaultIcon\ = "%1"	e23724d5289b98cfd5d86bd302707159.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\shell\open\command	e23724d5289b98cfd5d86bd302707159.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\shell	e23724d5289b98cfd5d86bd302707159.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\shell\open\command\ = "explorer \"C:\\Program Files (x86)\\Microsoft\\Internat Explorer\""	e23724d5289b98cfd5d86bd302707159.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1864 wrote to memory of 2136	1864	e23724d5289b98cfd5d86bd302707159.exe	87
PID 1864 wrote to memory of 2136	1864	e23724d5289b98cfd5d86bd302707159.exe	87
PID 1864 wrote to memory of 2136	1864	e23724d5289b98cfd5d86bd302707159.exe	87
PID 1864 wrote to memory of 1048	1864	e23724d5289b98cfd5d86bd302707159.exe	91
PID 1864 wrote to memory of 1048	1864	e23724d5289b98cfd5d86bd302707159.exe	91
PID 1864 wrote to memory of 1048	1864	e23724d5289b98cfd5d86bd302707159.exe	91

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2136	attrib.exe

C:\Users\Admin\AppData\Local\Temp\e23724d5289b98cfd5d86bd302707159.exe
"C:\Users\Admin\AppData\Local\Temp\e23724d5289b98cfd5d86bd302707159.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Checks computer location settings
- Loads dropped DLL
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1864
- C:\Windows\SysWOW64\attrib.exe
  "C:\Windows\System32\attrib.exe" "C:\Program Files (x86)\Microsoft\Internat Explorer" +s
  2⤵
  - Drops file in Program Files directory
  - Views/modifies file attributes
  PID:2136
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\temp_tmp.bat" "
  2⤵
  PID:1048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsy351C.tmp\System.dll

Filesize
11KB

MD5
00a0194c20ee912257df53bfe258ee4a

SHA1
d7b4e319bc5119024690dc8230b9cc919b1b86b2

SHA256
dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

SHA512
3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

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C:\Users\Admin\AppData\Local\Temp\temp_tmp.bat

Filesize
186B

MD5
160b04c2bf04fb17b47e90e86c410162

SHA1
bd7f25c9f751971acef24b7e00ef2b2cca7cd784

SHA256
728bb9cc216a29ca12f8ac6259517351bb057b0900e4cae81c3bb3d275a30635

SHA512
c987e153f9e53c6c1f0893c520b1f2c35ed11ec36cb65a55ff98f4aecc15807f6c74e7ee964984ae95a8bc909cf512c622511af073816c86e6f27aa999f84995

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads