059c666ad1ca23d638a4e67f38c0aecb743fe830283fffe6fbdd6e147b37bac8

General

Target

1325616808efbd6d8b95f40b3eb5eca0N.exe
Size

38KB
MD5

1325616808efbd6d8b95f40b3eb5eca0
SHA1

be8ea41e71eeba1110657558c71a247e887c6475
SHA256

059c666ad1ca23d638a4e67f38c0aecb743fe830283fffe6fbdd6e147b37bac8
SHA512

0917207cb2ae44603f73745a70eb1873df4dc5df308aa45ac75dac148286f56dd020d02e9c188cc3f1d5cf6c6654867926d4e0a7fa417821a697f2bf9515a462
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cOGu:NWQa2TLEmITcoQxfllfmS1cOt

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
2460	smss.exe

Loads dropped DLL 2 IoCs

pid	Process
2108	1325616808efbd6d8b95f40b3eb5eca0N.exe
2108	1325616808efbd6d8b95f40b3eb5eca0N.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/files/0x0007000000018b03-4.dat	upx
behavioral1/memory/2460-12-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/2460-18-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/2108-20-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	1325616808efbd6d8b95f40b3eb5eca0N.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
2348	sc.exe
1892	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	smss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1325616808efbd6d8b95f40b3eb5eca0N.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2108	1325616808efbd6d8b95f40b3eb5eca0N.exe
2460	smss.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2348	2108	1325616808efbd6d8b95f40b3eb5eca0N.exe	30
PID 2108 wrote to memory of 2348	2108	1325616808efbd6d8b95f40b3eb5eca0N.exe	30
PID 2108 wrote to memory of 2348	2108	1325616808efbd6d8b95f40b3eb5eca0N.exe	30
PID 2108 wrote to memory of 2348	2108	1325616808efbd6d8b95f40b3eb5eca0N.exe	30
PID 2108 wrote to memory of 2460	2108	1325616808efbd6d8b95f40b3eb5eca0N.exe	32
PID 2108 wrote to memory of 2460	2108	1325616808efbd6d8b95f40b3eb5eca0N.exe	32
PID 2108 wrote to memory of 2460	2108	1325616808efbd6d8b95f40b3eb5eca0N.exe	32
PID 2108 wrote to memory of 2460	2108	1325616808efbd6d8b95f40b3eb5eca0N.exe	32
PID 2460 wrote to memory of 1892	2460	smss.exe	33
PID 2460 wrote to memory of 1892	2460	smss.exe	33
PID 2460 wrote to memory of 1892	2460	smss.exe	33
PID 2460 wrote to memory of 1892	2460	smss.exe	33

C:\Users\Admin\AppData\Local\Temp\1325616808efbd6d8b95f40b3eb5eca0N.exe
"C:\Users\Admin\AppData\Local\Temp\1325616808efbd6d8b95f40b3eb5eca0N.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:2108
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2348
- 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:2460
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:1892

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
bc351d93632b4a419630248bf5d7b635

SHA1
997db2212f121689ae3b3f15f6ab5015404cc25f

SHA256
99312f14e8662c29f82f375e61c67f14e1077e62a71e266716e00bb3eb757731

SHA512
d85dd5c21df4fd372c2161bb2cd2e09972ed5f090398ebd15275605d20dda957754dcd07afad8c8c5add7b4af7235f0aac2faf41cb316b2f553f853cb8b77f98

Download Submit
memory/2108-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2108-10-0x0000000000470000-0x0000000000492000-memory.dmp

Filesize
136KB

Download
memory/2108-20-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2460-12-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2460-18-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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