1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756e

General

Target

1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe
Size

38KB
MD5

9697818d457dd5a9b4c00ca92af3c980
SHA1

f056336b17bf3189b3de017622060824e74dc8d6
SHA256

1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756e
SHA512

4ca3e0b12131d2474dd5f0d5d5c81f34e6d6794310b34bed85ca9600022b82600c443aab0ee0d71683cc7d9f4300bd5b7f41987b99ef99e91c5f3da568036028
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cOGY6:NWQa2TLEmITcoQxfllfmS1cOL6

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
2296	smss.exe

Loads dropped DLL 2 IoCs

pid	Process
2320	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe
2320	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2320-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/files/0x0008000000016d13-9.dat	upx
behavioral1/memory/2296-13-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/2296-21-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/2320-20-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.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
2276	sc.exe
2668	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	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.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
2320	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe
2296	smss.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 2276	2320	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	28
PID 2320 wrote to memory of 2276	2320	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	28
PID 2320 wrote to memory of 2276	2320	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	28
PID 2320 wrote to memory of 2276	2320	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	28
PID 2320 wrote to memory of 2296	2320	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	30
PID 2320 wrote to memory of 2296	2320	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	30
PID 2320 wrote to memory of 2296	2320	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	30
PID 2320 wrote to memory of 2296	2320	1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe	30
PID 2296 wrote to memory of 2668	2296	smss.exe	31
PID 2296 wrote to memory of 2668	2296	smss.exe	31
PID 2296 wrote to memory of 2668	2296	smss.exe	31
PID 2296 wrote to memory of 2668	2296	smss.exe	31

C:\Users\Admin\AppData\Local\Temp\1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.exe
"C:\Users\Admin\AppData\Local\Temp\1c9a536839258fffd9024a08add16d70d55b86caaec995621940f2916f18756eN.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:2320
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2276
- 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:2296
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:2668

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

C:\Windows\SysWOW64\1230\smss.exe

Filesize
38KB

MD5
2943a62310212a32a5bed3260a117a6e

SHA1
b8cc7dd24f86f92ae92dff9835e99a52ae350c3a

SHA256
6e15f0dbf7a9b00c6ff68a19753904e09b31076d54dcf13ce32dc32e2149bb43

SHA512
92bc8a28cc512b4e84c619d8eb64e484dab4b03c92c44bf85ecbc33d75660e2fe8fbff8521911c584d271065a3b8c623e7fb11f3deed91b8dea951f4362a1a4b

Download Submit
memory/2296-13-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2296-21-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2320-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2320-12-0x00000000003D0000-0x00000000003F2000-memory.dmp

Filesize
136KB

Download
memory/2320-11-0x00000000003D0000-0x00000000003F2000-memory.dmp

Filesize
136KB

Download
memory/2320-20-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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