c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8

Analysis

max time kernel
31s
max time network
39s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/10/2024, 08:53

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Reason

Machine shutdown

Report Analysis Logs

General

Target

c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe
Size

38KB
MD5

9579fa03a700fa7fa8308e9ed12d9be0
SHA1

93685a9d84cef5613fa9bdd62d4f55631a4a79f0
SHA256

c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8
SHA512

c931e4dc3778455d09b7b551e066827cf8de2e1ec80cbc76af5e7226a4110068616d285502f4a7e65aa8f15dca2a399b9bdfb0554a4617a36f5200918c6e4d20
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cOZ:NWQa2TLEmITcoQxfllfmS1cOZ

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
400	smss.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	smss.exe
File opened for modification	C:\Windows\SysWOW64\Service.exe	smss.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4376-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/files/0x0008000000023458-5.dat	upx
behavioral2/memory/400-11-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/4376-13-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Launches sc.exe 2 IoCs

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

pid	Process
4124	sc.exe
2424	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	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.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
4376	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe
400	smss.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 4124	4376	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	82
PID 4376 wrote to memory of 4124	4376	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	82
PID 4376 wrote to memory of 4124	4376	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	82
PID 4376 wrote to memory of 400	4376	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	84
PID 4376 wrote to memory of 400	4376	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	84
PID 4376 wrote to memory of 400	4376	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	84
PID 400 wrote to memory of 2424	400	smss.exe	85
PID 400 wrote to memory of 2424	400	smss.exe	85
PID 400 wrote to memory of 2424	400	smss.exe	85

C:\Users\Admin\AppData\Local\Temp\c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe
"C:\Users\Admin\AppData\Local\Temp\c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4124
- 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:400
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:2424

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
46e3a7b844f81f73a7f1e3ac290ad786

SHA1
ce30266d98b203ebffd8fe7d688b3e6529e65ecc

SHA256
9171e7ffaba99f937d7f4d767fdcc1c4170b89157e2a03fe3fae4b3f16c600a4

SHA512
090b862129656e4663676a1b40fd6a3680048f84fbda7ac2f0bc47623eceb4452bfb79d43cc21d360989fef7a56d2f6ca1eff949c80f98d2288df6de5ef61e47

Download Submit
memory/400-11-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4376-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4376-13-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download