d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a

Analysis

max time kernel
150s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
12-06-2024 04:46

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General

Target

d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a.exe
Size

66KB
MD5

8fd7138f70be771dc1356599c31c3cd6
SHA1

d0dfe1e6ecb6a820af62670f221d1f94193400df
SHA256

d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a
SHA512

49347b0a5cb71370a68059daf2742f5baf7ec29b01478d328de8200339b9a7e9e5d999a5db113e7f32ff68bafd4e0284aa18b94869da5aa44b6b2a97507af425
SSDEEP

1536:EHfetdklPp+07gDSrB8Xru2zGeJxgawTzpXzrDJrXih:IeklMMYJhqezw/pXzH9ih

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"	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

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\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 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
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

Executes dropped EXE 4 IoCs

pid	Process
2952	explorer.exe
2564	spoolsv.exe
4236	svchost.exe
696	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\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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.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	d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a.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
2608	d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a.exe
2608	d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a.exe
2952	explorer.exe
2952	explorer.exe
2952	explorer.exe
2952	explorer.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe
2952	explorer.exe
2952	explorer.exe
4236	svchost.exe
4236	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2952	explorer.exe
4236	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2608	d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a.exe
2608	d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a.exe
2952	explorer.exe
2952	explorer.exe
2564	spoolsv.exe
2564	spoolsv.exe
4236	svchost.exe
4236	svchost.exe
696	spoolsv.exe
696	spoolsv.exe
2952	explorer.exe
2952	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2608 wrote to memory of 2952	2608	d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a.exe	81
PID 2608 wrote to memory of 2952	2608	d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a.exe	81
PID 2608 wrote to memory of 2952	2608	d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a.exe	81
PID 2952 wrote to memory of 2564	2952	explorer.exe	83
PID 2952 wrote to memory of 2564	2952	explorer.exe	83
PID 2952 wrote to memory of 2564	2952	explorer.exe	83
PID 2564 wrote to memory of 4236	2564	spoolsv.exe	84
PID 2564 wrote to memory of 4236	2564	spoolsv.exe	84
PID 2564 wrote to memory of 4236	2564	spoolsv.exe	84
PID 4236 wrote to memory of 696	4236	svchost.exe	85
PID 4236 wrote to memory of 696	4236	svchost.exe	85
PID 4236 wrote to memory of 696	4236	svchost.exe	85
PID 4236 wrote to memory of 1104	4236	svchost.exe	86
PID 4236 wrote to memory of 1104	4236	svchost.exe	86
PID 4236 wrote to memory of 1104	4236	svchost.exe	86
PID 4236 wrote to memory of 3980	4236	svchost.exe	90
PID 4236 wrote to memory of 3980	4236	svchost.exe	90
PID 4236 wrote to memory of 3980	4236	svchost.exe	90
PID 4236 wrote to memory of 2776	4236	svchost.exe	92
PID 4236 wrote to memory of 2776	4236	svchost.exe	92
PID 4236 wrote to memory of 2776	4236	svchost.exe	92

C:\Users\Admin\AppData\Local\Temp\d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a.exe
"C:\Users\Admin\AppData\Local\Temp\d5a72adc53d434da872442a8dd7a88a6f492354baacac6d15bc6d51ba98df75a.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2608
- \??\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:2952
- - \??\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:2564
  - - \??\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:4236
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:696
    - - C:\Windows\SysWOW64\at.exe
        
        at 04:48 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:1104
    - - C:\Windows\SysWOW64\at.exe
        
        at 04:49 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:3980
    - - C:\Windows\SysWOW64\at.exe
        
        at 04:50 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2776

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

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

Filesize
66KB

MD5
5b5b7eb6c248e8d37ab6826dd6fddd18

SHA1
4c591093f153e2cc4bb8ea5d438778b2b0fad276

SHA256
b34350158a1e18ae4b2b813274d8277b468196c0af1005c3e5a0f8dc55ca2094

SHA512
a1a4ec33cc57af251c87bf45fc7915817b6492f23e0bec3c6e9b7889dde1e35f05027b3c76a9b0df65d57fd93cb1c55bb329498d76c10959e255602535ead937

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

Filesize
66KB

MD5
ef8c5d82650e9834493febf5df07a16a

SHA1
94b318be8ce37abada710e4c0a280eba91838379

SHA256
045445902b4b6e762a27a0ec38311f80087b55f59ffd8de002cb7e40256ee06b

SHA512
38e023e6755e25ed7c9aa8d3452ff4081a2c93e73196c2ffb92220b51a8e0ffd591f7b53c6c699939192e025018477c6e199dde48391d3b32bd6c5e38baf4946

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

Filesize
66KB

MD5
4047b7d9d01ff8ec0a538ceb97753f7a

SHA1
a3ebd89a42589dda25d784364411b70bf3bf4ef5

SHA256
58f4f016ebd1407b90bbea0d9b616afeb3198430248bac88f8fe14aa199de1b5

SHA512
af8c5bd79f072a28ffccddef3630ca3f8f67bb82f2d79bcb68cd9f587cf32eb206a2317187495bccb2c50cb68c3d36df1e439291f72cdecae698d194413a37a6

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

Filesize
66KB

MD5
098a5ee3f1f4c016aed15564126e15d4

SHA1
84311dad700fb347fe85c7b824a5ab7af1c98113

SHA256
9cc809497663f776e17d634e5d4d0737b4a2001be66732c5ec1eefc3a280d858

SHA512
a923ceb96f392c731436eb860eacf12423cdd3281a6a74f225f0a80c9d8b4570a7c056f28271dcee466ba96be610158e6ef4967c4ae449496fe3c24a60ef17e1

Download Submit
memory/696-50-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/696-45-0x0000000075460000-0x00000000755BD000-memory.dmp

Filesize
1.4MB

Download
memory/2564-27-0x0000000075460000-0x00000000755BD000-memory.dmp

Filesize
1.4MB

Download
memory/2564-26-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2564-51-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2564-31-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2608-56-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/2608-55-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2608-1-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/2608-2-0x0000000075460000-0x00000000755BD000-memory.dmp

Filesize
1.4MB

Download
memory/2608-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2608-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2608-5-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/2952-15-0x0000000075460000-0x00000000755BD000-memory.dmp

Filesize
1.4MB

Download
memory/2952-17-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2952-13-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2952-58-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2952-69-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2952-14-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4236-43-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4236-38-0x0000000075460000-0x00000000755BD000-memory.dmp

Filesize
1.4MB

Download
memory/4236-60-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download