059c666ad1ca23d638a4e67f38c0aecb743fe830283fffe6fbdd6e147b37bac8

Analysis

max time kernel
96s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08/09/2024, 10:39

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General

Target

1325616808efbd6d8b95f40b3eb5eca0N.exe
Size

38KB
MD5

1325616808efbd6d8b95f40b3eb5eca0
SHA1

be8ea41e71eeba1110657558c71a247e887c6475
SHA256

059c666ad1ca23d638a4e67f38c0aecb743fe830283fffe6fbdd6e147b37bac8
SHA512

0917207cb2ae44603f73745a70eb1873df4dc5df308aa45ac75dac148286f56dd020d02e9c188cc3f1d5cf6c6654867926d4e0a7fa417821a697f2bf9515a462
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cOGu:NWQa2TLEmITcoQxfllfmS1cOt

Score

8^/10

discovery evasion execution upx

Malware Config

Signatures

Stops running service(s) 4 TTPs
evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Executes dropped EXE 1 IoCs

pid	Process
4444	smss.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/768-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/files/0x0009000000023426-5.dat	upx
behavioral2/memory/768-11-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/4444-13-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	1325616808efbd6d8b95f40b3eb5eca0N.exe
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	smss.exe
File opened for modification	C:\Windows\SysWOW64\Service.exe	smss.exe

Launches sc.exe 2 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4972	sc.exe
3064	sc.exe

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1325616808efbd6d8b95f40b3eb5eca0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	smss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
768	1325616808efbd6d8b95f40b3eb5eca0N.exe
4444	smss.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 768 wrote to memory of 4972	768	1325616808efbd6d8b95f40b3eb5eca0N.exe	83
PID 768 wrote to memory of 4972	768	1325616808efbd6d8b95f40b3eb5eca0N.exe	83
PID 768 wrote to memory of 4972	768	1325616808efbd6d8b95f40b3eb5eca0N.exe	83
PID 768 wrote to memory of 4444	768	1325616808efbd6d8b95f40b3eb5eca0N.exe	85
PID 768 wrote to memory of 4444	768	1325616808efbd6d8b95f40b3eb5eca0N.exe	85
PID 768 wrote to memory of 4444	768	1325616808efbd6d8b95f40b3eb5eca0N.exe	85
PID 4444 wrote to memory of 3064	4444	smss.exe	86
PID 4444 wrote to memory of 3064	4444	smss.exe	86
PID 4444 wrote to memory of 3064	4444	smss.exe	86

C:\Users\Admin\AppData\Local\Temp\1325616808efbd6d8b95f40b3eb5eca0N.exe
"C:\Users\Admin\AppData\Local\Temp\1325616808efbd6d8b95f40b3eb5eca0N.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:768
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4972
- C:\Windows\SysWOW64\1230\smss.exe
  C:\Windows\system32\1230\smss.exe -d
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4444
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:3064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

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Downloads

C:\Windows\SysWOW64\1230\smss.exe

Filesize
38KB

MD5
37d735d1d9a9f62540393950b84b1fec

SHA1
5d5835fb77024c77a9fedcb1a84fa43c2c434692

SHA256
e2673c28fcc602b5bc2ea0eb3b746a1e659782012a41e68dfc5b08bacd00b3db

SHA512
fc6f75385a7b65f24f6bd8ce3208d3c2e03decefd80e672c4a4823a9ab41e4288e2a7340280e75a1c3b79bc6ee2b91f66bcba2966b9f06e53bb4f14ca1dfb7b4

Download Submit
memory/768-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/768-11-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4444-13-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download