d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a

Analysis

max time kernel
151s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
18/09/2022, 23:10

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General

Target

d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe
Size

62KB
MD5

cd86f72b7229362fd13a62f358390cd6
SHA1

117c833ab0bfe11c68548ff450aee359af83178d
SHA256

d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a
SHA512

ce5de4cd8aa9b8ff9439ade82d0b2b44ed7f40e5d9d6bcc7a1c78f92ecbbac2fb5c55d697402021313860da68913d3e05667017b458f90fffbbdcd9647321e96
SSDEEP

1536:yeN7zFy3KH9ntwviVWexfGHYaLbvWRfsz0Chz:dhzU+mviVWefG4UDsf6vp

Score

10^/10

persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\svch0st_.exe"	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe

Executes dropped EXE 1 IoCs

pid	Process
744	svch0st_.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000005c50-64.dat	upx
behavioral1/files/0x0007000000005c50-65.dat	upx
behavioral1/memory/1508-75-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral1/memory/744-78-0x0000000000400000-0x0000000000412000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
1572	cmd.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\svch0st_.exe	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe
File opened for modification	C:\Windows\svch0st_.exe	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe
File opened for modification	C:\Windows\lsas.bmp	svch0st_.exe
File created	C:\Windows\lsas.bmp	svch0st_.exe
File created	C:\Windows\Deleteme.bat	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1508	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe
1508	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe
1508	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe
744	svch0st_.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
744	svch0st_.exe
744	svch0st_.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 744	1508	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe	26
PID 1508 wrote to memory of 744	1508	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe	26
PID 1508 wrote to memory of 744	1508	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe	26
PID 1508 wrote to memory of 744	1508	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe	26
PID 1508 wrote to memory of 1572	1508	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe	27
PID 1508 wrote to memory of 1572	1508	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe	27
PID 1508 wrote to memory of 1572	1508	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe	27
PID 1508 wrote to memory of 1572	1508	d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe	27

C:\Users\Admin\AppData\Local\Temp\d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe
"C:\Users\Admin\AppData\Local\Temp\d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Windows\svch0st_.exe
  C:\Windows\svch0st_.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:744
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Windows\Deleteme.bat
  2⤵
  - Deletes itself
  PID:1572

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Deleteme.bat

Filesize
248B

MD5
d7e7a25c2615358748fd496c614ab304

SHA1
abbc958e524f37c51dd49e832667ee03fbc0ecad

SHA256
a70a74fa58de617870260c5b06f1372d1ef5485240395f03ea66e010691af8fd

SHA512
d7773f62db9dc55254dccf18b30a3c93a5de83da44b29ef75358664da69d7aac8964821aba6ddba8447b1bd1e454009ca727f90a7ca273f2de6f42cec668085b

Download Submit
C:\Windows\svch0st_.exe

Filesize
62KB

MD5
cd86f72b7229362fd13a62f358390cd6

SHA1
117c833ab0bfe11c68548ff450aee359af83178d

SHA256
d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a

SHA512
ce5de4cd8aa9b8ff9439ade82d0b2b44ed7f40e5d9d6bcc7a1c78f92ecbbac2fb5c55d697402021313860da68913d3e05667017b458f90fffbbdcd9647321e96

Download Submit
C:\Windows\svch0st_.exe

Filesize
62KB

MD5
cd86f72b7229362fd13a62f358390cd6

SHA1
117c833ab0bfe11c68548ff450aee359af83178d

SHA256
d458d3046fb7b856e851b3b48d04c586c92ad0c1cd2c8cd7104457cafe68761a

SHA512
ce5de4cd8aa9b8ff9439ade82d0b2b44ed7f40e5d9d6bcc7a1c78f92ecbbac2fb5c55d697402021313860da68913d3e05667017b458f90fffbbdcd9647321e96

Download Submit
memory/744-67-0x0000000000220000-0x0000000000231000-memory.dmp

Filesize
68KB

Download
memory/744-78-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/744-79-0x0000000000240000-0x0000000000253000-memory.dmp

Filesize
76KB

Download
memory/1508-55-0x00000000002A0000-0x00000000002B1000-memory.dmp

Filesize
68KB

Download
memory/1508-75-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1508-76-0x00000000002C0000-0x00000000002D2000-memory.dmp

Filesize
72KB

Download
memory/1508-77-0x00000000002C0000-0x00000000002D2000-memory.dmp

Filesize
72KB

Download