d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4

Analysis

max time kernel
139s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
02/05/2024, 04:00

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General

Target

d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe
Size

138KB
MD5

dc99061f09b1d84db24373c14a80dcf3
SHA1

2e1291768bd9485f7a598bc070cdbfba89eb52f9
SHA256

d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4
SHA512

7a7bfc486f02cf2e64c8977da5ccea1a10cd11885ebfc697019d35a5e12a01dea643ed92734421a2f702126dfe1a2c72aacdf29ccd48cad4aeb20015aa953675
SSDEEP

1536:rC2/fYuPfbESFYXRWhpKRycRd57JkIqFHhzm4hWru/BzihhMN45MF5FvHP132xPT:r7YubEwYXRWhpAJUHhzm4hUukS6Kmecd

Score

8^/10

evasion

Malware Config

Signatures

Stops running service(s) 3 TTPs
evasion

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Executes dropped EXE 1 IoCs

pid	Process
4356	smss.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.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 4 IoCs

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

pid	Process
1296	sc.exe
3828	sc.exe
636	sc.exe
1924	sc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1768	d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe
4356	smss.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 1296	1768	d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe	83
PID 1768 wrote to memory of 1296	1768	d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe	83
PID 1768 wrote to memory of 1296	1768	d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe	83
PID 1768 wrote to memory of 3828	1768	d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe	85
PID 1768 wrote to memory of 3828	1768	d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe	85
PID 1768 wrote to memory of 3828	1768	d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe	85
PID 1768 wrote to memory of 4356	1768	d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe	87
PID 1768 wrote to memory of 4356	1768	d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe	87
PID 1768 wrote to memory of 4356	1768	d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe	87
PID 4356 wrote to memory of 636	4356	smss.exe	88
PID 4356 wrote to memory of 636	4356	smss.exe	88
PID 4356 wrote to memory of 636	4356	smss.exe	88
PID 4356 wrote to memory of 1924	4356	smss.exe	90
PID 4356 wrote to memory of 1924	4356	smss.exe	90
PID 4356 wrote to memory of 1924	4356	smss.exe	90

C:\Users\Admin\AppData\Local\Temp\d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe
"C:\Users\Admin\AppData\Local\Temp\d1926fbcb9555d8d6cb824a5f95e06612bbfc82d948346221612607f62999cb4.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop SharedAccess
  2⤵
  - Launches sc.exe
  PID:1296
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  PID:3828
- C:\Windows\SysWOW64\1230\smss.exe
  C:\Windows\system32\1230\smss.exe -d
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4356
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop SharedAccess
    3⤵
    - Launches sc.exe
    PID:636
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    PID:1924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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
138KB

MD5
d6ee1a1ab8bcd10ec89655d67d79d324

SHA1
f9a58bc0ef3fb555a039877b3e46c24fb81c77cd

SHA256
f1fdeaf4293f5abdba6c89733af5acca27594fb8a94654ffb3e69dbbb7e6d474

SHA512
fd7798bc62211718204d087b19fcee5e37a6434a0755d8ee56e912aca13a8f0924f2fe34559119779e15abd5696ced0c11468c93d4cd570fe5ab3b23d7bd7d7b

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