00249ae9211637ed2ee7b77be77766a5b0fd994ef65ba4a8a7bf223bcfcb92dc

General

Target

f86c6fb6544013453837e5c67e9fd200N.exe
Size

38KB
MD5

f86c6fb6544013453837e5c67e9fd200
SHA1

2773a30b066c54aec527f44526f21221eaf75493
SHA256

00249ae9211637ed2ee7b77be77766a5b0fd994ef65ba4a8a7bf223bcfcb92dc
SHA512

57a50874e73817b4564dadc510f5685f09d85f3b66efa6d25f4de5f02531eb7bdc6111f2e560a6eac7907745908a1810a88c8a3f3b37713ac1f9af99ab4b784a
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cObB:NWQa2TLEmITcoQxfllfmS1cOF

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
1532	smss.exe

Loads dropped DLL 2 IoCs

pid	Process
1916	f86c6fb6544013453837e5c67e9fd200N.exe
1916	f86c6fb6544013453837e5c67e9fd200N.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1916-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/files/0x00080000000161f6-4.dat	upx
behavioral1/memory/1532-13-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/1916-21-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/1532-20-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Service.exe	smss.exe
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	f86c6fb6544013453837e5c67e9fd200N.exe
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	smss.exe

Launches sc.exe 2 IoCs

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

pid	Process
2188	sc.exe
1040	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	f86c6fb6544013453837e5c67e9fd200N.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
1916	f86c6fb6544013453837e5c67e9fd200N.exe
1532	smss.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2188	1916	f86c6fb6544013453837e5c67e9fd200N.exe	31
PID 1916 wrote to memory of 2188	1916	f86c6fb6544013453837e5c67e9fd200N.exe	31
PID 1916 wrote to memory of 2188	1916	f86c6fb6544013453837e5c67e9fd200N.exe	31
PID 1916 wrote to memory of 2188	1916	f86c6fb6544013453837e5c67e9fd200N.exe	31
PID 1916 wrote to memory of 1532	1916	f86c6fb6544013453837e5c67e9fd200N.exe	33
PID 1916 wrote to memory of 1532	1916	f86c6fb6544013453837e5c67e9fd200N.exe	33
PID 1916 wrote to memory of 1532	1916	f86c6fb6544013453837e5c67e9fd200N.exe	33
PID 1916 wrote to memory of 1532	1916	f86c6fb6544013453837e5c67e9fd200N.exe	33
PID 1532 wrote to memory of 1040	1532	smss.exe	34
PID 1532 wrote to memory of 1040	1532	smss.exe	34
PID 1532 wrote to memory of 1040	1532	smss.exe	34
PID 1532 wrote to memory of 1040	1532	smss.exe	34

C:\Users\Admin\AppData\Local\Temp\f86c6fb6544013453837e5c67e9fd200N.exe
"C:\Users\Admin\AppData\Local\Temp\f86c6fb6544013453837e5c67e9fd200N.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:1916
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2188
- 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:1532
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:1040

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
02f3b42d8325b861c6200e055bdae9af

SHA1
1d787411a6b853652a5f86a18ca68b79a0b811f4

SHA256
79a0b16096846e2ee3adfef1d98279f1368da8203591bb52f9ba91b2da6963be

SHA512
44385edd37cb927f7592864cbed523c246cd15540ea1fae11cb23757112a068fefcf1fe3aa9c651b921039a5790124c5f492332bfe13c64b9ae5e54955577f9b

Download Submit
memory/1532-13-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1532-20-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1916-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1916-11-0x00000000003B0000-0x00000000003D2000-memory.dmp

Filesize
136KB

Download
memory/1916-10-0x00000000003B0000-0x00000000003D2000-memory.dmp

Filesize
136KB

Download
memory/1916-21-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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