c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
15/03/2024, 23:34

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General

Target

c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe
Size

152KB
MD5

c68413ba02423ad3d7ae2cd9ebeda7a4
SHA1

1e76981b20ec3e2fa08d6d4b800a81f1034066e8
SHA256

c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc
SHA512

ad627d025b2c89f39851e509b779a4203cd2ee8214908d48b4ec36ccf605e81fb6d0f3534768ac4f38afd1ae6056adc1410bf0ec0bdd7ab3c08708fb0fceb36e
SSDEEP

3072:Fru5SkB2ca09lIqb5nr5JYpQ4O8k99K//RLbyVZtde:5oSkB2R09l9b5ntD4LKS/6de

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\apppatch\\svchost.exe,"	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1924	svchost.exe

Loads dropped DLL 2 IoCs

pid	Process
844	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe
844	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\56426db3 = "C:\\Windows\\apppatch\\svchost.exe"	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\56426db3 = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe
1924	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
844	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 844 wrote to memory of 1924	844	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe	28
PID 844 wrote to memory of 1924	844	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe	28
PID 844 wrote to memory of 1924	844	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe	28
PID 844 wrote to memory of 1924	844	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe	28

C:\Users\Admin\AppData\Local\Temp\c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe
"C:\Users\Admin\AppData\Local\Temp\c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe"
1⤵
- Loads dropped DLL
- Modifies WinLogon
- Drops file in Windows directory
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:844
- C:\Windows\apppatch\svchost.exe
  "C:\Windows\apppatch\svchost.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Modifies WinLogon
  - Suspicious behavior: EnumeratesProcesses
  PID:1924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Windows\AppPatch\svchost.exe

Filesize
152KB

MD5
18972506f087aa273c1b4d0a3c566968

SHA1
5055c2cd5f35db937b5c2c8160ba06d5f13877ea

SHA256
82476eff7e28267575744c18b6c69083426382c8a428aaca3cc84958e309b6a2

SHA512
cd5833520e4f0e4e3c8fe01993c79c1af2fa18c726495fea252e3bb9369e83f6b63915b8b1d1ffcc9a843d5fea618f87313f6941104dda9f73a0587b3c26c526

Download Submit
memory/844-0-0x0000000000450000-0x0000000000489000-memory.dmp

Filesize
228KB

Download
memory/844-1-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/844-15-0x0000000000450000-0x0000000000489000-memory.dmp

Filesize
228KB

Download
memory/844-16-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/1924-22-0x0000000000380000-0x00000000003C6000-memory.dmp

Filesize
280KB

Download
memory/1924-17-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/1924-20-0x0000000000380000-0x00000000003C6000-memory.dmp

Filesize
280KB

Download
memory/1924-18-0x0000000000380000-0x00000000003C6000-memory.dmp

Filesize
280KB

Download
memory/1924-24-0x0000000000380000-0x00000000003C6000-memory.dmp

Filesize
280KB

Download
memory/1924-26-0x0000000000380000-0x00000000003C6000-memory.dmp

Filesize
280KB

Download
memory/1924-28-0x0000000000380000-0x00000000003C6000-memory.dmp

Filesize
280KB

Download
memory/1924-30-0x0000000001DC0000-0x0000000001E0A000-memory.dmp

Filesize
296KB

Download
memory/1924-32-0x0000000001DC0000-0x0000000001E0A000-memory.dmp

Filesize
296KB

Download
memory/1924-33-0x0000000001DC0000-0x0000000001E0A000-memory.dmp

Filesize
296KB

Download
memory/1924-35-0x0000000001DC0000-0x0000000001E0A000-memory.dmp

Filesize
296KB

Download
memory/1924-38-0x0000000001DC0000-0x0000000001E0A000-memory.dmp

Filesize
296KB

Download
memory/1924-39-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download