29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77

Analysis

max time kernel
95s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 05:51

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General

Target

29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.exe
Size

38KB
MD5

de9d5e97ca5a4ef53a573e896f2b0da0
SHA1

621153f89ebaa1164e433e6f08c69bd3e689f2c7
SHA256

29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77
SHA512

af3eb3a54ec191a86b620afbb5d95a632be9bc2f99b3cf1455dde72bd3a2235c12ebeaf00b82e1cc120e48c0274d8f2f13fad904f8e3e05b92d78c05cc05829a
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cOe2:NWQa2TLEmITcoQxfllfmS1cOe2

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
700	smss.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4808-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/files/0x0007000000023454-5.dat	upx
behavioral2/memory/4808-11-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/700-13-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	smss.exe
File opened for modification	C:\Windows\SysWOW64\Service.exe	smss.exe
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.exe

Launches sc.exe 2 IoCs

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

pid	Process
4660	sc.exe
4960	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	29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.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
4808	29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.exe
700	smss.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4808 wrote to memory of 4660	4808	29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.exe	82
PID 4808 wrote to memory of 4660	4808	29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.exe	82
PID 4808 wrote to memory of 4660	4808	29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.exe	82
PID 4808 wrote to memory of 700	4808	29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.exe	84
PID 4808 wrote to memory of 700	4808	29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.exe	84
PID 4808 wrote to memory of 700	4808	29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.exe	84
PID 700 wrote to memory of 4960	700	smss.exe	85
PID 700 wrote to memory of 4960	700	smss.exe	85
PID 700 wrote to memory of 4960	700	smss.exe	85

C:\Users\Admin\AppData\Local\Temp\29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.exe
"C:\Users\Admin\AppData\Local\Temp\29816ba5444d408c5f4c2d836a0c296a9c993de55b02184208e7fb568c0dca77N.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4660
- 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:700
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:4960

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

Replay Monitor

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Downloads

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

Filesize
38KB

MD5
c0cdb37547c9f558231b68b5732d2f8c

SHA1
4e4a48367a8e7c82fa6148a58a55545066cd790a

SHA256
88288feafa54cca23e3f95456f14ddc4efed7553c51cf8f48c4c92e535c25869

SHA512
fed439e3180b2e29c8eacf751f586c582f26ead6db1a501fd31cd2c60ca605b5c5fb190eec8496479ee638452a8e8ee4d4ae226f0c3fc0ee07fb534301543c30

Download Submit
memory/700-13-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4808-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4808-11-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download