965c8ad9a47a0c82ceef371c2f6915573a536548368cca39c86c6bb3fb7f7cb3

Analysis

max time kernel
135s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
01/11/2023, 13:53

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General

Target

NEAS.0ff02e578b946881a6f80a1c511dc890.exe
Size

317KB
MD5

0ff02e578b946881a6f80a1c511dc890
SHA1

99cafeb256475dfe4809dab942092b3095f7e1b7
SHA256

965c8ad9a47a0c82ceef371c2f6915573a536548368cca39c86c6bb3fb7f7cb3
SHA512

9091c2e388108160b59d8a60c047cd1c815c7885553fc1502ee211ed4f7d6131e508c2222721fcb8166fb8e78660485a1b881e8341bb4ebf4d49af56f8840493
SSDEEP

6144:MVXm4i6pO0v/YBxK8eFLj3qJ5/TX2oK/aQq:Ms4++8ijaJRO/y

Score

7^/10

persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3524	mspaint.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Screen Saver Pro 3.1 = "C:\\Users\\Admin\\AppData\\Roaming\\ScreenSaverPro.scr"	NEAS.0ff02e578b946881a6f80a1c511dc890.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Fernrs = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Fernrs.exe"	mspaint.exe

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\G:	svchost.exe
File opened (read-only)	\??\L:	svchost.exe
File opened (read-only)	\??\Q:	svchost.exe
File opened (read-only)	\??\W:	svchost.exe
File opened (read-only)	\??\Z:	svchost.exe
File opened (read-only)	\??\D:	mspaint.exe
File opened (read-only)	\??\H:	svchost.exe
File opened (read-only)	\??\I:	svchost.exe
File opened (read-only)	\??\U:	svchost.exe
File opened (read-only)	\??\V:	svchost.exe
File opened (read-only)	\??\E:	svchost.exe
File opened (read-only)	\??\P:	svchost.exe
File opened (read-only)	\??\T:	svchost.exe
File opened (read-only)	\??\X:	svchost.exe
File opened (read-only)	\??\B:	svchost.exe
File opened (read-only)	\??\J:	svchost.exe
File opened (read-only)	\??\K:	svchost.exe
File opened (read-only)	\??\M:	svchost.exe
File opened (read-only)	\??\N:	svchost.exe
File opened (read-only)	\??\O:	svchost.exe
File opened (read-only)	\??\R:	svchost.exe
File opened (read-only)	\??\S:	svchost.exe
File opened (read-only)	\??\Y:	svchost.exe
File opened (read-only)	\??\F:	mspaint.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3444 set thread context of 1652	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	88

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	mspaint.exe

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2794390638"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31067343"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31067343"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31067343"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2783453519"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "405613837"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{D1750AB3-78C2-11EE-88E4-42A331C33A28} = "0"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2783453519"	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3524	mspaint.exe
3524	mspaint.exe
1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe
1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe
1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe
1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1672	IEXPLORE.EXE

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe
Token: SeDebugPrivilege	4464	svchost.exe
Token: SeDebugPrivilege	1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe
Token: SeDebugPrivilege	3524	mspaint.exe
Token: SeDebugPrivilege	2888	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1672	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
3524	mspaint.exe
3524	mspaint.exe
3524	mspaint.exe
3524	mspaint.exe
1672	IEXPLORE.EXE
1672	IEXPLORE.EXE
2888	IEXPLORE.EXE
2888	IEXPLORE.EXE
2888	IEXPLORE.EXE
2888	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 3444 wrote to memory of 4464	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	87
PID 3444 wrote to memory of 4464	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	87
PID 3444 wrote to memory of 4464	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	87
PID 3444 wrote to memory of 4464	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	87
PID 3444 wrote to memory of 4464	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	87
PID 3444 wrote to memory of 4464	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	87
PID 3444 wrote to memory of 1652	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	88
PID 3444 wrote to memory of 1652	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	88
PID 3444 wrote to memory of 1652	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	88
PID 3444 wrote to memory of 1652	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	88
PID 3444 wrote to memory of 1652	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	88
PID 3444 wrote to memory of 1652	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	88
PID 3444 wrote to memory of 1652	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	88
PID 3444 wrote to memory of 1652	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	88
PID 3444 wrote to memory of 1652	3444	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	88
PID 4464 wrote to memory of 3524	4464	svchost.exe	89
PID 4464 wrote to memory of 3524	4464	svchost.exe	89
PID 4464 wrote to memory of 3524	4464	svchost.exe	89
PID 1652 wrote to memory of 1788	1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	98
PID 1652 wrote to memory of 1788	1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	98
PID 1652 wrote to memory of 1788	1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	98
PID 1788 wrote to memory of 1672	1788	iexplore.exe	99
PID 1788 wrote to memory of 1672	1788	iexplore.exe	99
PID 1672 wrote to memory of 2888	1672	IEXPLORE.EXE	100
PID 1672 wrote to memory of 2888	1672	IEXPLORE.EXE	100
PID 1672 wrote to memory of 2888	1672	IEXPLORE.EXE	100
PID 1652 wrote to memory of 4464	1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	87
PID 1652 wrote to memory of 4464	1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	87
PID 1652 wrote to memory of 3524	1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	89
PID 1652 wrote to memory of 3524	1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	89
PID 1652 wrote to memory of 2888	1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	100
PID 1652 wrote to memory of 2888	1652	NEAS.0ff02e578b946881a6f80a1c511dc890.exe	100

C:\Users\Admin\AppData\Local\Temp\NEAS.0ff02e578b946881a6f80a1c511dc890.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.0ff02e578b946881a6f80a1c511dc890.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3444
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\system32\svchost.exe"
  2⤵
  - Enumerates connected drives
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4464
- - C:\Windows\SysWOW64\mspaint.exe
    "C:\Windows\system32\mspaint.exe"
    3⤵
    - Deletes itself
    - Adds Run key to start application
    - Enumerates connected drives
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3524
- C:\Users\Admin\AppData\Local\Temp\NEAS.0ff02e578b946881a6f80a1c511dc890.exe
  "C:\Users\Admin\AppData\Local\Temp\NEAS.0ff02e578b946881a6f80a1c511dc890.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1652
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1788
  - - C:\Program Files\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files\Internet Explorer\IEXPLORE.EXE"
      4⤵
      Modifies Internet Explorer settings
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1672
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1672 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:2888

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
1⤵
PID:488

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\80UBY5GD\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Fernrs.exe

Filesize
317KB

MD5
0ff02e578b946881a6f80a1c511dc890

SHA1
99cafeb256475dfe4809dab942092b3095f7e1b7

SHA256
965c8ad9a47a0c82ceef371c2f6915573a536548368cca39c86c6bb3fb7f7cb3

SHA512
9091c2e388108160b59d8a60c047cd1c815c7885553fc1502ee211ed4f7d6131e508c2222721fcb8166fb8e78660485a1b881e8341bb4ebf4d49af56f8840493

Download Submit
memory/1652-10-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1652-14-0x00000000021B0000-0x00000000021FE000-memory.dmp

Filesize
312KB

Download
memory/1652-18-0x00000000021B0000-0x00000000021FE000-memory.dmp

Filesize
312KB

Download
memory/1652-8-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1652-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1652-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3444-1-0x0000000000600000-0x0000000000614000-memory.dmp

Filesize
80KB

Download
memory/3444-0-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3444-11-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3444-2-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3524-30-0x0000000003600000-0x000000000364E000-memory.dmp

Filesize
312KB

Download
memory/3524-23-0x0000000003600000-0x000000000364E000-memory.dmp

Filesize
312KB

Download
memory/3524-21-0x0000000003600000-0x000000000364E000-memory.dmp

Filesize
312KB

Download
memory/3524-16-0x0000000003600000-0x000000000364E000-memory.dmp

Filesize
312KB

Download
memory/3524-35-0x0000000003600000-0x000000000364E000-memory.dmp

Filesize
312KB

Download
memory/3524-34-0x0000000003600000-0x000000000364E000-memory.dmp

Filesize
312KB

Download
memory/3524-32-0x0000000003600000-0x000000000364E000-memory.dmp

Filesize
312KB

Download
memory/3524-28-0x0000000003600000-0x000000000364E000-memory.dmp

Filesize
312KB

Download
memory/4464-6-0x0000000001240000-0x0000000001261000-memory.dmp

Filesize
132KB

Download
memory/4464-7-0x0000000000FF0000-0x0000000000FF1000-memory.dmp

Filesize
4KB

Download
memory/4464-25-0x0000000001240000-0x0000000001261000-memory.dmp

Filesize
132KB

Download
memory/4464-13-0x0000000003550000-0x000000000359E000-memory.dmp

Filesize
312KB

Download
memory/4464-17-0x0000000003550000-0x000000000359E000-memory.dmp

Filesize
312KB

Download