1f0e767c629657fd7067c5ba247813e0bbf867b005138de4d64f5c4b6690c0fa

General

Target

91cb700416b4dc5129f636da79572f80N.exe
Size

38KB
MD5

91cb700416b4dc5129f636da79572f80
SHA1

136b79f12cb8828eb3587a03c52243e5edca0170
SHA256

1f0e767c629657fd7067c5ba247813e0bbf867b005138de4d64f5c4b6690c0fa
SHA512

afa6e9cb2eb2c99b6333b6a0c92178ef7dddeb7363587cb82fb5b15ba2f53c9b5de9fe5212bf31c9e46b1605a6da4b0033cd90cf105f1d3ef605d14054aca8d9
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cONhv:NWQa2TLEmITcoQxfllfmS1cODv

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
3060	smss.exe

Loads dropped DLL 2 IoCs

pid	Process
1896	91cb700416b4dc5129f636da79572f80N.exe
1896	91cb700416b4dc5129f636da79572f80N.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1896-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/files/0x0009000000013a35-4.dat	upx
behavioral1/memory/3060-18-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/1896-17-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	91cb700416b4dc5129f636da79572f80N.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
1544	sc.exe
1976	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	91cb700416b4dc5129f636da79572f80N.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
1896	91cb700416b4dc5129f636da79572f80N.exe
3060	smss.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 1976	1896	91cb700416b4dc5129f636da79572f80N.exe	29
PID 1896 wrote to memory of 1976	1896	91cb700416b4dc5129f636da79572f80N.exe	29
PID 1896 wrote to memory of 1976	1896	91cb700416b4dc5129f636da79572f80N.exe	29
PID 1896 wrote to memory of 1976	1896	91cb700416b4dc5129f636da79572f80N.exe	29
PID 1896 wrote to memory of 3060	1896	91cb700416b4dc5129f636da79572f80N.exe	31
PID 1896 wrote to memory of 3060	1896	91cb700416b4dc5129f636da79572f80N.exe	31
PID 1896 wrote to memory of 3060	1896	91cb700416b4dc5129f636da79572f80N.exe	31
PID 1896 wrote to memory of 3060	1896	91cb700416b4dc5129f636da79572f80N.exe	31
PID 3060 wrote to memory of 1544	3060	smss.exe	32
PID 3060 wrote to memory of 1544	3060	smss.exe	32
PID 3060 wrote to memory of 1544	3060	smss.exe	32
PID 3060 wrote to memory of 1544	3060	smss.exe	32

C:\Users\Admin\AppData\Local\Temp\91cb700416b4dc5129f636da79572f80N.exe
"C:\Users\Admin\AppData\Local\Temp\91cb700416b4dc5129f636da79572f80N.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:1896
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1976
- 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:3060
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:1544

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
19170284006351ef639351f8cf0195cd

SHA1
4606c1a7457e472700b6e29ace4ce0e26e053481

SHA256
7684fc797a1e626d14cccd9f7bf6fb0cac446c67f5a9b6ec7f3d5c36eccea03a

SHA512
c6b5881c8c72380af2c3b371efefc280c5a20cd30622a43fc7a1449289e580158b6d648640223fd58a2a770294311b16f9475d9b6d325b63b94bab0c7b2d669f

Download Submit
memory/1896-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1896-17-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3060-18-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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