b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721

General

Target

b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe
Size

138KB
MD5

5d8d92fbda0b38017fd587d050d31b9d
SHA1

85435615eed52c53accc0f4d421a0fef76de08f9
SHA256

b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721
SHA512

d6b1a3cee19d6d27f7aba480551b8203c1ffac88425ec4557c81aef7629aa974068af64005a9233bcb78c3364416b941edeb650049322b475ded800f654449cd
SSDEEP

1536:rC2/fYuPfbESFYXRWhpKRycRd57JkIqFHhzm4hWru/BzihhMN45MF5FvHP132xPY:r7YubEwYXRWhpAJUHhzm4hUukS6Kmecq

Score

8^/10

evasion execution

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
3020	smss.exe

Loads dropped DLL 2 IoCs

pid	Process
1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe
1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.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
2012	sc.exe
1840	sc.exe
2584	sc.exe
2696	sc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe
3020	smss.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 2012	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	28
PID 1948 wrote to memory of 2012	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	28
PID 1948 wrote to memory of 2012	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	28
PID 1948 wrote to memory of 2012	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	28
PID 1948 wrote to memory of 1840	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	30
PID 1948 wrote to memory of 1840	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	30
PID 1948 wrote to memory of 1840	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	30
PID 1948 wrote to memory of 1840	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	30
PID 1948 wrote to memory of 3020	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	32
PID 1948 wrote to memory of 3020	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	32
PID 1948 wrote to memory of 3020	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	32
PID 1948 wrote to memory of 3020	1948	b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe	32
PID 3020 wrote to memory of 2584	3020	smss.exe	33
PID 3020 wrote to memory of 2584	3020	smss.exe	33
PID 3020 wrote to memory of 2584	3020	smss.exe	33
PID 3020 wrote to memory of 2584	3020	smss.exe	33
PID 3020 wrote to memory of 2696	3020	smss.exe	35
PID 3020 wrote to memory of 2696	3020	smss.exe	35
PID 3020 wrote to memory of 2696	3020	smss.exe	35
PID 3020 wrote to memory of 2696	3020	smss.exe	35

C:\Users\Admin\AppData\Local\Temp\b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe
"C:\Users\Admin\AppData\Local\Temp\b9f723a888dcbfe931bdc979e6f9b6b7c26cfac1909e7a9a1a02c358421dd721.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop SharedAccess
  2⤵
  - Launches sc.exe
  PID:2012
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  PID:1840
- 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:3020
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop SharedAccess
    3⤵
    - Launches sc.exe
    PID:2584
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    PID:2696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

1

T1489

Replay Monitor

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Downloads

\Windows\SysWOW64\1230\smss.exe

Filesize
138KB

MD5
7bc18297b556b81885a0e6744f2c1c15

SHA1
5ca704a2cab8e423256b2f420a69640f0f0e20ac

SHA256
265b2064bd354f6897e01d41655c29b867ac5170a259ced9635c84c92e13e23a

SHA512
ab99d0ab2a6d1de7bad522843cdb3404afba256db91967a7efeb433e381f2635fa0b21295aed140db2c738c66aadf786a0d819adc52ae2a1739134b55e39d74e

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Analysis

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