c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8

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
2152	smss.exe

Loads dropped DLL 2 IoCs

pid	Process
1744	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe
1744	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.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
behavioral1/memory/1744-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/files/0x00070000000186d9-4.dat	upx
behavioral1/memory/2152-20-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/1744-18-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Launches sc.exe 2 IoCs

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

pid	Process
2376	sc.exe
1796	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	smss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1744	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe
2152	smss.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 2376	1744	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	29
PID 1744 wrote to memory of 2376	1744	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	29
PID 1744 wrote to memory of 2376	1744	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	29
PID 1744 wrote to memory of 2376	1744	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	29
PID 1744 wrote to memory of 2152	1744	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	31
PID 1744 wrote to memory of 2152	1744	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	31
PID 1744 wrote to memory of 2152	1744	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	31
PID 1744 wrote to memory of 2152	1744	c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe	31
PID 2152 wrote to memory of 1796	2152	smss.exe	32
PID 2152 wrote to memory of 1796	2152	smss.exe	32
PID 2152 wrote to memory of 1796	2152	smss.exe	32
PID 2152 wrote to memory of 1796	2152	smss.exe	32

C:\Users\Admin\AppData\Local\Temp\c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe
"C:\Users\Admin\AppData\Local\Temp\c79a2fd88cdeb20e40b6a4714140967a699359c165a5e17adca4e7d49efeb2a8N.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2376
- 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:2152
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:1796

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

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
38KB

MD5
a1ebe1dbdfd419417148ae81a6dae46c

SHA1
3e9b2e99cabf52aa49dab4605596a4a79097b7ea

SHA256
4bab5247519a0f67062abc4a35dd1b4aad838f2ed30164c472127abe8445fdc8

SHA512
03e1263fd9ec3fb41b10e6272f2ebf6782f0a9590cfa5db20c24f3b8dd870ecb73ea5ce400297beb6a35597a563cc1e55b0a5936d460c7c05985a1734001ee31

Download Submit
memory/1744-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1744-12-0x0000000000270000-0x0000000000292000-memory.dmp

Filesize
136KB

Download
memory/1744-11-0x0000000000270000-0x0000000000292000-memory.dmp

Filesize
136KB

Download
memory/1744-18-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2152-20-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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