331a562953f7da86fb6fc344a1c27c49051105177f8ff8661058d801d8f12802

Analysis

max time kernel
139s
max time network
153s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
16/06/2024, 02:37

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General

Target
server.exe
Size 48KB
Sample240616-c4lxaawdpg
SHA256 0498fe1b3c0866a85b0b9c653800877da139973d6b60646f99f00e014bbb71e7
MD5 eff3e0fad856f7bed3f7ef76e355b75e
SHA1 ac9fc470156acc577e6b5e889b6d28bb12e39db8
SHA512 458ac1d27e70a2fbee1e5c8abb3d1b1fb0c093f57e06d3401a0e45bbc32d619afccbc21ca2d70a694eb173e17f1a46b7a59fdcdfa933618d4f4701e0909bf7b4
SSDEEP 768:zynb12Aw5J6HC4kq5Jp9bjAzhyY55J+NStcEeUlyqgZl4p67ChPC:Ub1MsHz3JDwhyWr+N95OTga6p
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

persistence

Malware Config

Signatures

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Remocte1\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\240608921.dll"	server.exe

Executes dropped EXE 1 IoCs

pid	Process
2348	Remocte1.exe

Loads dropped DLL 3 IoCs

pid	Process
1888	server.exe
4892	svchost.exe
2348	Remocte1.exe

Creates a Windows Service
persistence

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Remocte1.exe	svchost.exe
File created	C:\Windows\SysWOW64\Remocte1.exe	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
968	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1888	server.exe
1888	server.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1888	server.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1888	server.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1888 wrote to memory of 836	1888	server.exe	75
PID 1888 wrote to memory of 836	1888	server.exe	75
PID 1888 wrote to memory of 836	1888	server.exe	75
PID 836 wrote to memory of 968	836	cmd.exe	77
PID 836 wrote to memory of 968	836	cmd.exe	77
PID 836 wrote to memory of 968	836	cmd.exe	77
PID 4892 wrote to memory of 2348	4892	svchost.exe	78
PID 4892 wrote to memory of 2348	4892	svchost.exe	78
PID 4892 wrote to memory of 2348	4892	svchost.exe	78

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
1⤵
- Sets DLL path for service in the registry
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1888
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 1 && del /f/q "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:836
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - Runs ping.exe
    PID:968

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remocte1"
1⤵
PID:4868

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remocte1"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Windows\SysWOW64\Remocte1.exe
  C:\Windows\system32\Remocte1.exe "c:\users\admin\appdata\local\temp\240608921.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Remocte1.exe

Path C:\Windows\SysWOW64\Remocte1.exe
Size 59KB
SHA256 2be981b3686ee5e725583f5936f5f0a0992723cad784457f91d9d1d5a15a0852
MD5 f57886ace1ab4972b0308f69b1a0029c
SHA1 519b2a981cb522ed2b0901f9871f9aa9781a6cd5
SHA512 c2b3f016a8c3993771cd5709e469c9dedfa1dd35047691de5e853e2ad0ac025ec210fc6cb662c82d08f62e2c889e5060e796414a4eaf6a6c1719cdd7e5debdf8
SSDEEP 768:ZE4kM/YtA7Fnl7vL6D/tq1oe60DRvbSEln5IyYpamDjobj8SbW:Zk1mBl6DwoADRBln5IUmDjoXfW
MD5 SHA1 SHA512 SSDEEP

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240608921.dll

Path \Users\Admin\AppData\Local\Temp\240608921.dll
Size 25KB
SHA256 27f447598c1af8f8ea01354781d55f79eb737754d9c254d6cd5b4cef1ef2165c
MD5 175ecc539f793d9825efc5eb4d8d6487
SHA1 703d62df9a500345e2459bd3dc66d09a9a731c70
SHA512 653bc6cb75f9844977893abddeb6daf7e62b39b83e14f2591bd293dbeeba9d8d1e5136a7baf5a4d6c0a9630136a384367028bab57ac98da15502bd42e7870aef
SSDEEP 384:8T9IWqIwt10zr6lXYhCRdkyurLmC2S1xJrQcWrH/RUAMO0MY0holUxHdaq4tKDES:8ht+Izr6pqRrLuS1vzWpaGZHdmYDG
MD5 SHA1 SHA512 SSDEEP

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