bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0

Analysis

max time kernel
150s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 03:08

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General

Target
bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0.exe
Size 65KB
Sample240603-dnecyaae35
SHA256 bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0
MD5 70993d531a81faa3e30833d47630eea3
SHA1 9e0a0d41c36b65ed7d77ae81f4634cb25685fa18
SHA512 2de6b99f57712f6196d0bbdf796e5bc0af22d48ec8e3f7e962b07d59cc121a4ada369b24b60dc5746471aa66078ea5c44695e9e7cef665958402f599178d833c
SSDEEP 1536:ECq3yRuqrI01eArdW/O7JnI2e13XiLij40MkTUVqa/OuYkkkkkkkkkkkkkkkkkkq:7WNqkOJWmo1HpM0MkTUmub
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	svchost.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Modifies Installed Components in the registry 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
464	explorer.exe
3040	spoolsv.exe
4084	svchost.exe
2336	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	explorer.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe
File opened for modification	\??\c:\windows\system\explorer.exe	bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0.exe
File opened for modification	\??\c:\windows\system\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	spoolsv.exe
File opened for modification	\??\c:\windows\system\explorer.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
948	bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0.exe
948	bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0.exe
464	explorer.exe
464	explorer.exe
464	explorer.exe
464	explorer.exe
464	explorer.exe
464	explorer.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe
4084	svchost.exe
4084	svchost.exe
464	explorer.exe
464	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
464	explorer.exe
4084	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
948	bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0.exe
948	bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0.exe
464	explorer.exe
464	explorer.exe
3040	spoolsv.exe
3040	spoolsv.exe
4084	svchost.exe
4084	svchost.exe
2336	spoolsv.exe
2336	spoolsv.exe
464	explorer.exe
464	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 948 wrote to memory of 464	948	bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0.exe	82
PID 948 wrote to memory of 464	948	bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0.exe	82
PID 948 wrote to memory of 464	948	bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0.exe	82
PID 464 wrote to memory of 3040	464	explorer.exe	83
PID 464 wrote to memory of 3040	464	explorer.exe	83
PID 464 wrote to memory of 3040	464	explorer.exe	83
PID 3040 wrote to memory of 4084	3040	spoolsv.exe	85
PID 3040 wrote to memory of 4084	3040	spoolsv.exe	85
PID 3040 wrote to memory of 4084	3040	spoolsv.exe	85
PID 4084 wrote to memory of 2336	4084	svchost.exe	87
PID 4084 wrote to memory of 2336	4084	svchost.exe	87
PID 4084 wrote to memory of 2336	4084	svchost.exe	87
PID 4084 wrote to memory of 2124	4084	svchost.exe	89
PID 4084 wrote to memory of 2124	4084	svchost.exe	89
PID 4084 wrote to memory of 2124	4084	svchost.exe	89
PID 4084 wrote to memory of 936	4084	svchost.exe	99
PID 4084 wrote to memory of 936	4084	svchost.exe	99
PID 4084 wrote to memory of 936	4084	svchost.exe	99
PID 4084 wrote to memory of 2112	4084	svchost.exe	101
PID 4084 wrote to memory of 2112	4084	svchost.exe	101
PID 4084 wrote to memory of 2112	4084	svchost.exe	101

C:\Users\Admin\AppData\Local\Temp\bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0.exe
"C:\Users\Admin\AppData\Local\Temp\bea52030f2d2bb08619532039619c7ee3a6f60fc81d4833cea7ce922138808d0.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:948
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Modifies Installed Components in the registry
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:464
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3040
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Modifies Installed Components in the registry
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4084
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:2336
    - - C:\Windows\SysWOW64\at.exe
        
        at 03:11 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2124
    - - C:\Windows\SysWOW64\at.exe
        
        at 03:12 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:936
    - - C:\Windows\SysWOW64\at.exe
        
        at 03:13 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2112

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

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

mrsys.exe

Path C:\Users\Admin\AppData\Roaming\mrsys.exe
Size 65KB
SHA256 1570d64858075a81777ddd8b3a6c7830ac98ea8659f10530e9e942d0c2105f73
MD5 17be95bf78869484e7f713fd8af0009a
SHA1 73f2e3422d9d70991b7dab10d54efafc5490a56c
SHA512 caf50338977480d595423d9432c3f60831c04fa2226e6c1f033769aabece08c8e793c63ac1210afc30dd0d98dc033063c568a511627eb3c510cffb9fd4d8db73
SSDEEP 1536:ECq3yRuqrI01eArdW/O7JnI2e13XiLij40MkTUVqa/OuK:7WNqkOJWmo1HpM0MkTUmuK
MD5 SHA1 SHA512 SSDEEP

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spoolsv.exe

Path C:\Windows\System\spoolsv.exe
Size 65KB
SHA256 a4d47d3adea2e907fba4e0718c0fb622600ff146b6ba34747f7cdc67638491e5
MD5 ade5553517e5a7e9b26840554015426f
SHA1 fdb7b07dbe09157f0ff285d7d9680133a768a46f
SHA512 be5b164ba7fd6891024699bca12cdbbe98f6fe14dd29270a6cb0570a6746dc9589051cf4526eb3fc3b2fa8adde07792e30b17a4405c7acf67d609f9f27d26189
SSDEEP 1536:ECq3yRuqrI01eArdW/O7JnI2e13XiLij40MkTUVqa/OuF:7WNqkOJWmo1HpM0MkTUmuF
MD5 SHA1 SHA512 SSDEEP

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svchost.exe

Path C:\Windows\System\svchost.exe
Size 65KB
SHA256 9cb6263e5813baf0e042b14740f86511762ad5240ec9d2c4d71fd2305988bc83
MD5 e8f87545f433b92b5e753f5cbb26d9a5
SHA1 aba8a95e0cb523f4ac5301d076886bdeff420d32
SHA512 a2706fe9b6733b8c0aa7c5f3f350e0570e5058b4cc0ba1007c45ee82428868d03b35e3914688d5c6e10dce1c716b5669cd467ec25d1e24aad21997f1bc773f3e
SSDEEP 1536:ECq3yRuqrI01eArdW/O7JnI2e13XiLij40MkTUVqa/Ouy:7WNqkOJWmo1HpM0MkTUmuy
MD5 SHA1 SHA512 SSDEEP

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explorer.exe

Path \??\c:\windows\system\explorer.exe
Size 65KB
SHA256 f2e72652ec5ba0368ec82d955bb689b4ae49e149ad9bbf87e06abfcdd6751098
MD5 1bebaca87ff895ad61cbd2125e77e669
SHA1 feeb206d64c9864f89dcab086e5b7c727b13a4e0
SHA512 4c53004958f93cfdfdd3280262fc414a44ee5cd21092df98e67bb35db33e14d847e0978e02cf6aba217c030a6e374e389b59695e38900d7d29ff8bd31c82c76c
SSDEEP 1536:ECq3yRuqrI01eArdW/O7JnI2e13XiLij40MkTUVqa/Oue:7WNqkOJWmo1HpM0MkTUmue
MD5 SHA1 SHA512 SSDEEP

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memory/464-13-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/464-68-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/464-14-0x0000000075460000-0x00000000755BD000-memory.dmp

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memory/464-17-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/464-58-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/948-2-0x0000000075460000-0x00000000755BD000-memory.dmp

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memory/948-1-0x00000000001C0000-0x00000000001C4000-memory.dmp

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memory/948-3-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/948-0-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/948-5-0x0000000000401000-0x000000000042E000-memory.dmp

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memory/948-56-0x0000000000401000-0x000000000042E000-memory.dmp

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memory/948-55-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/2336-43-0x0000000075460000-0x00000000755BD000-memory.dmp

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memory/2336-49-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/3040-25-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/3040-53-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/3040-26-0x0000000075460000-0x00000000755BD000-memory.dmp

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memory/4084-40-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/4084-59-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/4084-36-0x0000000075460000-0x00000000755BD000-memory.dmp

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