4df1202ec465fcaed47609c3b8de8bf123f04782829b08d06ccc2007be73bd3f

Analysis

max time kernel
101s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/08/2024, 01:40

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General

Target

f787ee064ef7bde38f4a64b4f61a0240N.exe
Size

38KB
MD5

f787ee064ef7bde38f4a64b4f61a0240
SHA1

9cfdd7b8ac467b687ca8b28a5125b41dd46a3f7f
SHA256

4df1202ec465fcaed47609c3b8de8bf123f04782829b08d06ccc2007be73bd3f
SHA512

9c1751f760b6ff1932080cc423029db1ce70302e86ba133e13c99ba70aff3d5fb3a8e84c66afa2f665e0eba5aca9faa309958ed4be2b2efb911224693ccbe567
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cONg:NWQa2TLEmITcoQxfllfmS1cOm

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
1300	smss.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/624-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/files/0x00070000000234c1-5.dat	upx
behavioral2/memory/1300-12-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/624-11-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	f787ee064ef7bde38f4a64b4f61a0240N.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
4668	sc.exe
916	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	f787ee064ef7bde38f4a64b4f61a0240N.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
624	f787ee064ef7bde38f4a64b4f61a0240N.exe
1300	smss.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 624 wrote to memory of 4668	624	f787ee064ef7bde38f4a64b4f61a0240N.exe	84
PID 624 wrote to memory of 4668	624	f787ee064ef7bde38f4a64b4f61a0240N.exe	84
PID 624 wrote to memory of 4668	624	f787ee064ef7bde38f4a64b4f61a0240N.exe	84
PID 624 wrote to memory of 1300	624	f787ee064ef7bde38f4a64b4f61a0240N.exe	86
PID 624 wrote to memory of 1300	624	f787ee064ef7bde38f4a64b4f61a0240N.exe	86
PID 624 wrote to memory of 1300	624	f787ee064ef7bde38f4a64b4f61a0240N.exe	86
PID 1300 wrote to memory of 916	1300	smss.exe	87
PID 1300 wrote to memory of 916	1300	smss.exe	87
PID 1300 wrote to memory of 916	1300	smss.exe	87

C:\Users\Admin\AppData\Local\Temp\f787ee064ef7bde38f4a64b4f61a0240N.exe
"C:\Users\Admin\AppData\Local\Temp\f787ee064ef7bde38f4a64b4f61a0240N.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:624
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4668
- 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:1300
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:916

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
1f78443efad9ca359bd54cb5eac99f44

SHA1
cbd8aa9e016705a6078b386360c97dfce07b2ba2

SHA256
740e3749956d227a8276e2f4921ee60b16e5c4f69c8f0a6de7f6445335a8a9fb

SHA512
0c4e51b598af66488e0d56a61cfbb7cec591f4f4d8ce8ec0178efb71f6b5351d8419df6d4ada393b6d244bbe8efe64477b8267ef334858c0cf65087e74834708

Download Submit
memory/624-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/624-11-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1300-12-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download