944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c

General

Target

944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
Size

67KB
MD5

f23b574fad39f213858dc68196f18cf4
SHA1

fc90f13de3f4219d2ba60c06f1accb67cac646af
SHA256

944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c
SHA512

0b0c84cd04cc65d34a4f0a6b713ba93bff86e14384e53fd4618484f273f1d8374953b03025f36d3da801d7bb3953f4ae75f61267833c0bdd1acbeb492cd871de
SSDEEP

1536:EgXsfgWQN1kYsRxWTg3PwSWe991Rdolpdz6JAkAG:1tWYfGATvPe9slp+ApG

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

svchost.exeexplorer.exe

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

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

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Processes:

explorer.exesvchost.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

Processes:

svchost.exeexplorer.exe

description	ioc	process
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
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

Executes dropped EXE 4 IoCs

Processes:

explorer.exespoolsv.exesvchost.exespoolsv.exe

pid process

4668 explorer.exe
1844 spoolsv.exe
1600 svchost.exe
1164 spoolsv.exe

pid	process
4668	explorer.exe
1844	spoolsv.exe
1600	svchost.exe
1164	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

explorer.exesvchost.exe

description	ioc	process
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
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

Drops file in Windows directory 6 IoCs

Processes:

svchost.exeexplorer.exe944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exespoolsv.exe

description	ioc	process
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe
File opened for modification	\??\c:\windows\system\explorer.exe	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.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

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

at.exe944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exeexplorer.exespoolsv.exesvchost.exespoolsv.exeat.exeat.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exeexplorer.exesvchost.exe

pid	process
1344	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
1344	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
4668	explorer.exe
4668	explorer.exe
4668	explorer.exe
4668	explorer.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe
4668	explorer.exe
4668	explorer.exe
1600	svchost.exe
1600	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

Processes:

explorer.exesvchost.exe

pid process

4668 explorer.exe
1600 svchost.exe

pid	process
4668	explorer.exe
1600	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exeexplorer.exespoolsv.exesvchost.exespoolsv.exe

pid	process
1344	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
1344	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
4668	explorer.exe
4668	explorer.exe
1844	spoolsv.exe
1844	spoolsv.exe
1600	svchost.exe
1600	svchost.exe
1164	spoolsv.exe
1164	spoolsv.exe
4668	explorer.exe
4668	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exeexplorer.exespoolsv.exesvchost.exe

description	pid	process	target process
PID 1344 wrote to memory of 4668	1344	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe	explorer.exe
PID 1344 wrote to memory of 4668	1344	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe	explorer.exe
PID 1344 wrote to memory of 4668	1344	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe	explorer.exe
PID 4668 wrote to memory of 1844	4668	explorer.exe	spoolsv.exe
PID 4668 wrote to memory of 1844	4668	explorer.exe	spoolsv.exe
PID 4668 wrote to memory of 1844	4668	explorer.exe	spoolsv.exe
PID 1844 wrote to memory of 1600	1844	spoolsv.exe	svchost.exe
PID 1844 wrote to memory of 1600	1844	spoolsv.exe	svchost.exe
PID 1844 wrote to memory of 1600	1844	spoolsv.exe	svchost.exe
PID 1600 wrote to memory of 1164	1600	svchost.exe	spoolsv.exe
PID 1600 wrote to memory of 1164	1600	svchost.exe	spoolsv.exe
PID 1600 wrote to memory of 1164	1600	svchost.exe	spoolsv.exe
PID 1600 wrote to memory of 4092	1600	svchost.exe	at.exe
PID 1600 wrote to memory of 4092	1600	svchost.exe	at.exe
PID 1600 wrote to memory of 4092	1600	svchost.exe	at.exe
PID 1600 wrote to memory of 4480	1600	svchost.exe	at.exe
PID 1600 wrote to memory of 4480	1600	svchost.exe	at.exe
PID 1600 wrote to memory of 4480	1600	svchost.exe	at.exe
PID 1600 wrote to memory of 548	1600	svchost.exe	at.exe
PID 1600 wrote to memory of 548	1600	svchost.exe	at.exe
PID 1600 wrote to memory of 548	1600	svchost.exe	at.exe

C:\Users\Admin\AppData\Local\Temp\944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
"C:\Users\Admin\AppData\Local\Temp\944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1344
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4668
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1844
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Boot or Logon Autostart Execution: Active Setup
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1600
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:1164
    - - C:\Windows\SysWOW64\at.exe
        
        at 01:47 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4092
    - - C:\Windows\SysWOW64\at.exe
        
        at 01:48 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4480
    - - C:\Windows\SysWOW64\at.exe
        
        at 01:49 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

3

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\mrsys.exe

Filesize
67KB

MD5
f8a452cca1956f44a756531665fee9f6

SHA1
6cf68baa0285ce1c4e68bfae1c098deb14b68149

SHA256
0a648ae6abd653fba482bff4e1df1353e8e974105c7685658c0f13346e9f8853

SHA512
a6bf12c7770b2fa8fa13afe08df4df7282d44e0fc1f907d819d1d32799418385d246d4978ade3043b5551f7391e2490e3e66357f8a529f7fcb92f79718bb7d64

Download Submit
C:\Windows\System\explorer.exe

Filesize
67KB

MD5
2c517fa2c5c27e94cc27c21c7d12e007

SHA1
b6f5f4ab50592989e0c8d5481a7d4e1b28fb0ab4

SHA256
23427850b809db94a83c6e9fde20fa52ff76646e7273043a62ae9fa64e69d39b

SHA512
80d69a3fe12b87878c71318cd847bd7975155b3d5a93801cdb09be153e67917f4f5c4594873e8a096b23fe19b41db0c50cf4c186f4b06705f3cbb286d2d0d978

Download Submit
C:\Windows\System\spoolsv.exe

Filesize
67KB

MD5
e3e30668857aad40e0d7d24551a5482e

SHA1
b029c5d241bbe072e7ade8046b8f38a1b89e575a

SHA256
0f50b88536d0de81c320bf6193f7fa95f0703c4918836751b0ea0db78380ab0f

SHA512
477bb043c24e49518494085f9534b609b381dc2ccb6a03dbc7eb1ad0fc64dbd18e14610eab1684b5dc1b94abd3a0a6bfaf877684c49c02bdb3e7fd8cdbecab93

Download Submit
C:\Windows\System\svchost.exe

Filesize
67KB

MD5
7c8f80f8e24a9e08b2148ceb6b5cb8a3

SHA1
816d1ff265b3ca44ff624bc665535ba87210b57d

SHA256
84ac7fa826e6810f6931c08adf69f997e426c19f7afcc85111527db9783c84d1

SHA512
6d6a3cfe50f2bf4b399a753855e3197c8d5e66dc13224190fb8724f193ca577099eb3a64ed3dd6b7d2b3f3ac09f1a00d72a6aa3dbdbd4f89ae36ced44551b8af

Download Submit
\??\PIPE\atsvc

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/1164-51-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1164-45-0x00000000754F0000-0x000000007564D000-memory.dmp

Filesize
1.4MB

Download
memory/1344-58-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1344-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1344-2-0x00000000754F0000-0x000000007564D000-memory.dmp

Filesize
1.4MB

Download
memory/1344-40-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/1344-44-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1344-4-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1344-57-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1344-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1344-1-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/1600-60-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1600-41-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1600-36-0x00000000754F0000-0x000000007564D000-memory.dmp

Filesize
1.4MB

Download
memory/1844-54-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1844-29-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1844-25-0x00000000754F0000-0x000000007564D000-memory.dmp

Filesize
1.4MB

Download
memory/4668-14-0x00000000754F0000-0x000000007564D000-memory.dmp

Filesize
1.4MB

Download
memory/4668-16-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4668-13-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4668-59-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4668-73-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads