1f0e767c629657fd7067c5ba247813e0bbf867b005138de4d64f5c4b6690c0fa

Analysis

max time kernel
100s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/08/2024, 23:32

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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
2956	smss.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5004-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/files/0x000800000002345c-5.dat	upx
behavioral2/memory/5004-11-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/2956-13-0x0000000000400000-0x0000000000422000-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
2928	sc.exe
3032	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
5004	91cb700416b4dc5129f636da79572f80N.exe
2956	smss.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 2928	5004	91cb700416b4dc5129f636da79572f80N.exe	84
PID 5004 wrote to memory of 2928	5004	91cb700416b4dc5129f636da79572f80N.exe	84
PID 5004 wrote to memory of 2928	5004	91cb700416b4dc5129f636da79572f80N.exe	84
PID 5004 wrote to memory of 2956	5004	91cb700416b4dc5129f636da79572f80N.exe	86
PID 5004 wrote to memory of 2956	5004	91cb700416b4dc5129f636da79572f80N.exe	86
PID 5004 wrote to memory of 2956	5004	91cb700416b4dc5129f636da79572f80N.exe	86
PID 2956 wrote to memory of 3032	2956	smss.exe	87
PID 2956 wrote to memory of 3032	2956	smss.exe	87
PID 2956 wrote to memory of 3032	2956	smss.exe	87

C:\Users\Admin\AppData\Local\Temp\91cb700416b4dc5129f636da79572f80N.exe
"C:\Users\Admin\AppData\Local\Temp\91cb700416b4dc5129f636da79572f80N.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2928
- 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:2956
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:3032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

Replay Monitor

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Downloads

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

Filesize
38KB

MD5
2e8a8bfebcc413814c296320505a3b1a

SHA1
ef5b70fedb8a7b12f308ff28a5cd6dfb5a269f11

SHA256
c0d67f9e394fb9283cd3f4c35eface9bf094e0be757fdf9e137c42bc27ead0d9

SHA512
885728721d6556766e82468177e2d4765ef1622f446e153757e00a8edf31825dfb3a3b82a361b5fb60094b9fc4970ee42d4f2ea8b4669c9ca0ec3ef882721207

Download Submit
memory/2956-13-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/5004-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/5004-11-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download