2dc4c306da01adebbc2304f3d82d009bc3ca4a097209e4f6dd5400ef4f93cbc8

Analysis

max time kernel
131s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2024, 04:54

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General

Target

ehsvc.dll
Size

2.2MB
MD5

5cda9b81dee8a0007716fe544efdb917
SHA1

539f5b64dd825ede4c755062bed4a9c6d7664c9d
SHA256

78d47f032d493ce5fb59eecaa31aa2be047386ee0416780df19fb62db4d35272
SHA512

f0c206f077b12daab882fbe2090d192e030cc6e4319f09dc4b62b2a56f4fbb89c6003b9d93d07ba0f10e17f48e3197872792ebac6670b9aa1c1e077d86ba30c0
SSDEEP

49152:dMlCfUzvLjrM3RV/vife+OIBrercGAMOtKqd3wM12k3KzfblE3xE:perQV/7OeIGeEql12k3KG3u

Score

7^/10

evasion

Malware Config

Signatures

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Wine	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1436	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4004	1436	WerFault.exe	83

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1436	rundll32.exe
1436	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3464 wrote to memory of 1436	3464	rundll32.exe	83
PID 3464 wrote to memory of 1436	3464	rundll32.exe	83
PID 3464 wrote to memory of 1436	3464	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ehsvc.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3464
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ehsvc.dll,#1
  2⤵
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  PID:1436
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 740
    3⤵
    - Program crash
    PID:4004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1436 -ip 1436
1⤵
PID:2124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1436-0-0x0000000010000000-0x0000000010495000-memory.dmp

Filesize
4.6MB

Download
memory/1436-1-0x0000000010000000-0x0000000010495000-memory.dmp

Filesize
4.6MB

Download
memory/1436-10-0x0000000010001000-0x0000000010067000-memory.dmp

Filesize
408KB

Download
memory/1436-9-0x00000000028F0000-0x00000000028F1000-memory.dmp

Filesize
4KB

Download
memory/1436-8-0x0000000000A10000-0x0000000000A11000-memory.dmp

Filesize
4KB

Download
memory/1436-7-0x00000000028B0000-0x00000000028B1000-memory.dmp

Filesize
4KB

Download
memory/1436-6-0x0000000002940000-0x0000000002942000-memory.dmp

Filesize
8KB

Download
memory/1436-5-0x0000000002910000-0x0000000002911000-memory.dmp

Filesize
4KB

Download
memory/1436-4-0x00000000028E0000-0x00000000028E1000-memory.dmp

Filesize
4KB

Download
memory/1436-3-0x00000000028A0000-0x00000000028A1000-memory.dmp

Filesize
4KB

Download
memory/1436-2-0x0000000002930000-0x0000000002931000-memory.dmp

Filesize
4KB

Download
memory/1436-11-0x0000000010000000-0x0000000010495000-memory.dmp

Filesize
4.6MB

Download
memory/1436-12-0x0000000010000000-0x0000000010495000-memory.dmp

Filesize
4.6MB

Download
memory/1436-13-0x0000000000520000-0x0000000000534000-memory.dmp

Filesize
80KB

Download