7abb0766d6e3f8f2b986759ecef264945cf2f16dc07597ab52974876917ea959

Analysis

max time kernel
102s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20/08/2024, 08:41

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General

Target

3bd7c50c46d41b763a3dfe154866b4b0N.exe
Size

38KB
MD5

3bd7c50c46d41b763a3dfe154866b4b0
SHA1

6034dee7c16925e86738e1323fcadc6ca083b9d2
SHA256

7abb0766d6e3f8f2b986759ecef264945cf2f16dc07597ab52974876917ea959
SHA512

242f38c9213c5bd94ce82cfc542ef5500c7aadfe1cd5e58b2e37aa0a979b91cce36c61fb0a7005b1e656a22bf44d1fbb3e6b02af0524757a6c0b13ff49a1463d
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cONhn:NWQa2TLEmITcoQxfllfmS1cODn

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
3524	smss.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1932-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/files/0x000700000002347d-5.dat	upx
behavioral2/memory/3524-13-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/1932-11-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	3bd7c50c46d41b763a3dfe154866b4b0N.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
2272	sc.exe
1956	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	3bd7c50c46d41b763a3dfe154866b4b0N.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
1932	3bd7c50c46d41b763a3dfe154866b4b0N.exe
3524	smss.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 2272	1932	3bd7c50c46d41b763a3dfe154866b4b0N.exe	84
PID 1932 wrote to memory of 2272	1932	3bd7c50c46d41b763a3dfe154866b4b0N.exe	84
PID 1932 wrote to memory of 2272	1932	3bd7c50c46d41b763a3dfe154866b4b0N.exe	84
PID 1932 wrote to memory of 3524	1932	3bd7c50c46d41b763a3dfe154866b4b0N.exe	86
PID 1932 wrote to memory of 3524	1932	3bd7c50c46d41b763a3dfe154866b4b0N.exe	86
PID 1932 wrote to memory of 3524	1932	3bd7c50c46d41b763a3dfe154866b4b0N.exe	86
PID 3524 wrote to memory of 1956	3524	smss.exe	87
PID 3524 wrote to memory of 1956	3524	smss.exe	87
PID 3524 wrote to memory of 1956	3524	smss.exe	87

C:\Users\Admin\AppData\Local\Temp\3bd7c50c46d41b763a3dfe154866b4b0N.exe
"C:\Users\Admin\AppData\Local\Temp\3bd7c50c46d41b763a3dfe154866b4b0N.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2272
- 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:3524
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:1956

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
9856b6bb20a766e8c7f88ff1a8955935

SHA1
a6cf07d677748341b6560fea9709edcba6e3f309

SHA256
5b3066eae2fd7cae854db831b45e721134e01244726308d8136325732f4f7767

SHA512
55c6d9ad7a9e2821eddbbc4a5a8f135185c41b323a3f26bd92dc3eabef69d7c5596f03b4ffe8248947506b978217c190657e95cdf269cd9a8a882e17bba6275d

Download Submit
memory/1932-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1932-11-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3524-13-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download