45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c

General

Target

45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe
Size

33KB
MD5

d3aa3ce5454c73718cfea2bafcf15b1e
SHA1

0a1712c8f65a5044d5e95f02913a40e614dcda33
SHA256

45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c
SHA512

866c98fb4589c1cab8351d6c639beb8d15547f05f2b6620efaad5eaffc226f9c18c64fd6afd954ef7ea08f1b91ade9adabb483301e76df9224a0d0adcedad6a1
SSDEEP

768:9bXIxF9wgv52zGzcA5JUKytvmBB/Kmy+m+nq3T:9jYzwgv0KzcA5JivqiUgT

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1800	sysload.com

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1184-54-0x0000000000400000-0x000000000042C000-memory.dmp	upx
behavioral1/files/0x000b0000000122cc-57.dat	upx
behavioral1/files/0x000b0000000122cc-58.dat	upx
behavioral1/files/0x000b0000000122cc-60.dat	upx
behavioral1/files/0x000b0000000122cc-63.dat	upx
behavioral1/memory/1184-64-0x0000000001B70000-0x0000000001B9C000-memory.dmp	upx
behavioral1/memory/1800-66-0x0000000000400000-0x000000000042C000-memory.dmp	upx
behavioral1/memory/1184-67-0x0000000000400000-0x000000000042C000-memory.dmp	upx
behavioral1/memory/1800-68-0x0000000000400000-0x000000000042C000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1184	45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe
1184	45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	sysload.com
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\sysload = "C:\\Windows\\SysWOW64\\sysload.COM"	sysload.com

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\sysload.com	45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe
File opened for modification	C:\Windows\SysWOW64\sysload.com	45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe
File opened for modification	C:\Windows\SysWOW64\sysload.com	sysload.com

Modifies Control Panel 4 IoCs

evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Control Panel\International\	45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Control Panel\International\locale = "00000401"	45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Control Panel\International\	sysload.com
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Control Panel\International\locale = "00000401"	sysload.com

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1800	sysload.com

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1184	45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe
1800	sysload.com

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 1800	1184	45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe	26
PID 1184 wrote to memory of 1800	1184	45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe	26
PID 1184 wrote to memory of 1800	1184	45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe	26
PID 1184 wrote to memory of 1800	1184	45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe	26

C:\Users\Admin\AppData\Local\Temp\45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe
"C:\Users\Admin\AppData\Local\Temp\45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Modifies Control Panel
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\sysload.com
  C:\Windows\system32\sysload.com
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - Modifies Control Panel
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:1800

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\sysload.com

Filesize
33KB

MD5
d3aa3ce5454c73718cfea2bafcf15b1e

SHA1
0a1712c8f65a5044d5e95f02913a40e614dcda33

SHA256
45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c

SHA512
866c98fb4589c1cab8351d6c639beb8d15547f05f2b6620efaad5eaffc226f9c18c64fd6afd954ef7ea08f1b91ade9adabb483301e76df9224a0d0adcedad6a1

Download Submit
C:\Windows\SysWOW64\sysload.com

Filesize
33KB

MD5
d3aa3ce5454c73718cfea2bafcf15b1e

SHA1
0a1712c8f65a5044d5e95f02913a40e614dcda33

SHA256
45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c

SHA512
866c98fb4589c1cab8351d6c639beb8d15547f05f2b6620efaad5eaffc226f9c18c64fd6afd954ef7ea08f1b91ade9adabb483301e76df9224a0d0adcedad6a1

Download Submit
\Windows\SysWOW64\sysload.com

Filesize
33KB

MD5
d3aa3ce5454c73718cfea2bafcf15b1e

SHA1
0a1712c8f65a5044d5e95f02913a40e614dcda33

SHA256
45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c

SHA512
866c98fb4589c1cab8351d6c639beb8d15547f05f2b6620efaad5eaffc226f9c18c64fd6afd954ef7ea08f1b91ade9adabb483301e76df9224a0d0adcedad6a1

Download Submit
\Windows\SysWOW64\sysload.com

Filesize
33KB

MD5
d3aa3ce5454c73718cfea2bafcf15b1e

SHA1
0a1712c8f65a5044d5e95f02913a40e614dcda33

SHA256
45c63966e1b3fe737dcf952df0839a3b5f55d8ef5f72211f15b30f9cde35321c

SHA512
866c98fb4589c1cab8351d6c639beb8d15547f05f2b6620efaad5eaffc226f9c18c64fd6afd954ef7ea08f1b91ade9adabb483301e76df9224a0d0adcedad6a1

Download Submit
memory/1184-54-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1184-64-0x0000000001B70000-0x0000000001B9C000-memory.dmp

Filesize
176KB

Download
memory/1184-65-0x0000000001B70000-0x0000000001B9C000-memory.dmp

Filesize
176KB

Download
memory/1184-67-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1800-66-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1800-68-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download

Analysis

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