1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756e

Analysis

max time kernel
93s
max time network
94s
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 05:45

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General

Target

1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe
Size

38KB
MD5

9697818d457dd5a9b4c00ca92af3c980
SHA1

f056336b17bf3189b3de017622060824e74dc8d6
SHA256

1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756e
SHA512

4ca3e0b12131d2474dd5f0d5d5c81f34e6d6794310b34bed85ca9600022b82600c443aab0ee0d71683cc7d9f4300bd5b7f41987b99ef99e91c5f3da568036028
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cOGY6:NWQa2TLEmITcoQxfllfmS1cOL6

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
1284	smss.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4172-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/files/0x00070000000234ac-5.dat	upx
behavioral2/memory/4172-11-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/1284-13-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.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
2712	sc.exe
636	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	smss.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4172	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe
1284	smss.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4172 wrote to memory of 2712	4172	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	82
PID 4172 wrote to memory of 2712	4172	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	82
PID 4172 wrote to memory of 2712	4172	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	82
PID 4172 wrote to memory of 1284	4172	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	84
PID 4172 wrote to memory of 1284	4172	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	84
PID 4172 wrote to memory of 1284	4172	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	84
PID 1284 wrote to memory of 636	1284	smss.exe	85
PID 1284 wrote to memory of 636	1284	smss.exe	85
PID 1284 wrote to memory of 636	1284	smss.exe	85

C:\Users\Admin\AppData\Local\Temp\1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe
"C:\Users\Admin\AppData\Local\Temp\1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4172
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2712
- 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:1284
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:636

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
fc5e30bfe67be29086c5961d7912838a

SHA1
b196849e2e2f9b8ec103743a30461c8e2b115c88

SHA256
4cac23fc26d7a7107e5e5998e1932553490128c00b41b1d9d4062fb0850362c5

SHA512
ffacc612f9f68e465d7ccca632301c4cb373169a6ae736b0b3d83fdd69bf7333f757ca85b4a67fb7bd71f9204f9368906f537aea056dd8bc9db31a132939b5c6

Download Submit
memory/1284-13-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4172-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4172-11-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download