8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14/06/2024, 00:55

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b.exe
Size 65KB
Sample240614-a96sjascpm
SHA256 8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b
MD5 b9b8dd8c6b0e711c02ff8497c34c4140
SHA1 46a2513aa7a84acef2c613921c06283a7ec07e07
SHA512 3a4e2407fd331bce10acdd8cc230ecc649d2394dd4b3e3582599f8906e2b11f55a15e047ce2c12f1a7501c217e6deb32ff84495e0c154824e8b24662ec894bea
SSDEEP 1536:ECq3yRuqrI01eArdW/O7JnI2e13XiLij40MkTUVqa/OuM:7WNqkOJWmo1HpM0MkTUmuM
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-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.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
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

pid	Process
2896	explorer.exe
836	spoolsv.exe
2864	svchost.exe
896	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"	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

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	8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b.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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4704	8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b.exe
4704	8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b.exe
2896	explorer.exe
2896	explorer.exe
2896	explorer.exe
2896	explorer.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe
2896	explorer.exe
2896	explorer.exe
2864	svchost.exe
2864	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2896	explorer.exe
2864	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4704	8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b.exe
4704	8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b.exe
2896	explorer.exe
2896	explorer.exe
836	spoolsv.exe
836	spoolsv.exe
2864	svchost.exe
2864	svchost.exe
896	spoolsv.exe
896	spoolsv.exe
2896	explorer.exe
2896	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4704 wrote to memory of 2896	4704	8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b.exe	89
PID 4704 wrote to memory of 2896	4704	8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b.exe	89
PID 4704 wrote to memory of 2896	4704	8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b.exe	89
PID 2896 wrote to memory of 836	2896	explorer.exe	90
PID 2896 wrote to memory of 836	2896	explorer.exe	90
PID 2896 wrote to memory of 836	2896	explorer.exe	90
PID 836 wrote to memory of 2864	836	spoolsv.exe	91
PID 836 wrote to memory of 2864	836	spoolsv.exe	91
PID 836 wrote to memory of 2864	836	spoolsv.exe	91
PID 2864 wrote to memory of 896	2864	svchost.exe	93
PID 2864 wrote to memory of 896	2864	svchost.exe	93
PID 2864 wrote to memory of 896	2864	svchost.exe	93
PID 2864 wrote to memory of 2236	2864	svchost.exe	94
PID 2864 wrote to memory of 2236	2864	svchost.exe	94
PID 2864 wrote to memory of 2236	2864	svchost.exe	94
PID 2864 wrote to memory of 4120	2864	svchost.exe	108
PID 2864 wrote to memory of 4120	2864	svchost.exe	108
PID 2864 wrote to memory of 4120	2864	svchost.exe	108
PID 2864 wrote to memory of 4636	2864	svchost.exe	110
PID 2864 wrote to memory of 4636	2864	svchost.exe	110
PID 2864 wrote to memory of 4636	2864	svchost.exe	110

C:\Users\Admin\AppData\Local\Temp\8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b.exe
"C:\Users\Admin\AppData\Local\Temp\8644765c7bc7e303e614b174c9648c67cb6c5713d37f286cf12ab51398d0519b.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4704
- \??\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:2896
- - \??\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:836
  - - \??\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:2864
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:896
    - - C:\Windows\SysWOW64\at.exe
        
        at 00:57 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2236
    - - C:\Windows\SysWOW64\at.exe
        
        at 00:58 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4120
    - - C:\Windows\SysWOW64\at.exe
        
        at 00:59 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4636

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4192,i,14221647728265121051,6840906015709541562,262144 --variations-seed-version --mojo-platform-channel-handle=3996 /prefetch:8
1⤵
PID:1088

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

Loading Replay Monitor...

Downloads

mrsys.exe

Path C:\Users\Admin\AppData\Roaming\mrsys.exe
Size 65KB
SHA256 0645fab10efe29118027ce879989dd6836630d94dfe618d05d1e492c1fc43d5e
MD5 0727e5f6241ab2a8ca1ef668faf467d0
SHA1 b5e3824ffbcd8d1e0b6bdf4ea871d0d1c0c23191
SHA512 896ff403081d101c27b7d56114d4e2f2b77765a231810317997460851dc6e0708f158b1fe3e08605d6dfd083cb1d40222ccbe21a35756ebd7cc30cf1ee6f2395
SSDEEP 1536:ECq3yRuqrI01eArdW/O7JnI2e13XiLij40MkTUVqa/OuNssssssssssssssssssx:7WNqkOJWmo1HpM0MkTUmuz
MD5 SHA1 SHA512 SSDEEP

Submit Download

explorer.exe

Path C:\Windows\System\explorer.exe
Size 65KB
SHA256 6e4dd20bc8d36142f7433be10884d6537d54f0a9ae2fe094c71eee80a8dee9af
MD5 37de6ddb834289c95cb07c7b20534505
SHA1 d667ee6631f1c8c324d37cc83267ae6b83820de0
SHA512 57d73c1a35267df77053ea480b9aad6f0f256bef7f6d1d97175025f11ad972a9cb80224851af3a467cf6cd1c444bc63e268952f93dd416125913a662c2d168f1
SSDEEP 1536:ECq3yRuqrI01eArdW/O7JnI2e13XiLij40MkTUVqa/Oup:7WNqkOJWmo1HpM0MkTUmup
MD5 SHA1 SHA512 SSDEEP

Submit Download

spoolsv.exe

Path C:\Windows\System\spoolsv.exe
Size 65KB
SHA256 67d93ce9f7b0d426133d82e6a4a7482377b7ce638cdfe9ff9872c846b15438ea
MD5 0b805ac0b57f6be92ad634b98676e310
SHA1 25d2efa38c6dff765c1f218cf1036610269df829
SHA512 7e6f5cdcdc83ad1c78e48940864fc43783c6b7931a4cb2af5760d004693bc7600ddb51769bdea65f9b44f04f0d8b97a65737fc3067acaba7f3ba32bdf3e50093
SSDEEP 1536:ECq3yRuqrI01eArdW/O7JnI2e13XiLij40MkTUVqa/Ouu222222222222222222i:7WNqkOJWmo1HpM0MkTUmuu222222222b
MD5 SHA1 SHA512 SSDEEP

Submit Download

svchost.exe

Path \??\c:\windows\system\svchost.exe
Size 65KB
SHA256 e70c6d6022d7e917f38e2ff59d0af000c76c37ba160e5c609ee0e61fdbb77d4c
MD5 e2471dd74865b54be143836316130f04
SHA1 2f4b11c96d0085af2d6acc370b747e4dfbeb787b
SHA512 60594fb95107d18af677ba3af54ad65e50810414423b14c00a5344df088143f8645a1e99841b8cfcab5461fd132e024c3551ec56c7334c43229304477a5f505b
SSDEEP 1536:ECq3yRuqrI01eArdW/O7JnI2e13XiLij40MkTUVqa/OuN:7WNqkOJWmo1HpM0MkTUmuN
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/836-56-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/836-27-0x0000000075930000-0x0000000075A8D000-memory.dmp

Download

memory/836-32-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/836-25-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/836-26-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/896-46-0x0000000075930000-0x0000000075A8D000-memory.dmp

Download

memory/896-54-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/2864-62-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/2864-38-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/2864-39-0x0000000075930000-0x0000000075A8D000-memory.dmp

Download

memory/2896-14-0x0000000075930000-0x0000000075A8D000-memory.dmp

Download

memory/2896-13-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/2896-71-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/2896-60-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/2896-16-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/4704-0-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/4704-57-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/4704-2-0x0000000075930000-0x0000000075A8D000-memory.dmp

Download

memory/4704-58-0x0000000000401000-0x000000000042E000-memory.dmp

Download

memory/4704-1-0x00000000001C0000-0x00000000001C4000-memory.dmp

Download

memory/4704-45-0x00000000001C0000-0x00000000001C4000-memory.dmp

Download

memory/4704-3-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/4704-5-0x0000000000401000-0x000000000042E000-memory.dmp

Download