7f01a143014e54fea66d7b40186842b78a421a52ca02a616f06d84c9274651cf

Analysis

max time kernel
176s
max time network
181s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
26/11/2022, 02:01

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General

Target

LetGo.exe
Size

100KB
MD5

66f5b672d1c27615ccf5644f53b3200a
SHA1

77d4f6ea42a4e7c3f3d2b9eaf19b12ed658742a2
SHA256

87142a78a463945d210e10c733b90adfc0ca29b60e81af8d1debf2fd3ae1a4fe
SHA512

59b0a184c97f463e45345d6e1637fa15c35fc78438afb48830d85936a74414d6ebe140c644533e62aa564a8e34a3f88db2c2ef19301d846b9b443aaf29c536f3
SSDEEP

1536:UZFAbI7TdP7aQTssv2qf+8Dk2/qiUDtfXo3KZl7QKM90/T1Msid9Tb9NwidME:UAQR7cR8D9/ADtfXoqlk9kZtidfuU

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies firewall policy service 2 TTPs 4 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	LetGo.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	LetGo.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	LetGo.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Local\Temp\LetGo.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\LetGo.exe:*:enabled:@shell32.dll,-1"	LetGo.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	LetGo.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\xiaoqinyk.ddns.net = "C:\\Users\\Admin\\AppData\\Local\\Temp\\LetGo.exe"	LetGo.exe

Checks processor information in registry 2 TTPs 2 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	LetGo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	LetGo.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
516	LetGo.exe
516	LetGo.exe

Suspicious behavior: MapViewOfSection 64 IoCs

pid	Process
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe
516	LetGo.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	516	LetGo.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 516 wrote to memory of 588	516	LetGo.exe	6
PID 516 wrote to memory of 588	516	LetGo.exe	6
PID 516 wrote to memory of 588	516	LetGo.exe	6
PID 516 wrote to memory of 588	516	LetGo.exe	6
PID 516 wrote to memory of 588	516	LetGo.exe	6
PID 516 wrote to memory of 588	516	LetGo.exe	6
PID 516 wrote to memory of 664	516	LetGo.exe	4
PID 516 wrote to memory of 664	516	LetGo.exe	4
PID 516 wrote to memory of 664	516	LetGo.exe	4
PID 516 wrote to memory of 664	516	LetGo.exe	4
PID 516 wrote to memory of 664	516	LetGo.exe	4
PID 516 wrote to memory of 664	516	LetGo.exe	4
PID 516 wrote to memory of 776	516	LetGo.exe	8
PID 516 wrote to memory of 776	516	LetGo.exe	8
PID 516 wrote to memory of 776	516	LetGo.exe	8
PID 516 wrote to memory of 776	516	LetGo.exe	8
PID 516 wrote to memory of 776	516	LetGo.exe	8
PID 516 wrote to memory of 776	516	LetGo.exe	8
PID 516 wrote to memory of 784	516	LetGo.exe	19
PID 516 wrote to memory of 784	516	LetGo.exe	19
PID 516 wrote to memory of 784	516	LetGo.exe	19
PID 516 wrote to memory of 784	516	LetGo.exe	19
PID 516 wrote to memory of 784	516	LetGo.exe	19
PID 516 wrote to memory of 784	516	LetGo.exe	19
PID 516 wrote to memory of 792	516	LetGo.exe	18
PID 516 wrote to memory of 792	516	LetGo.exe	18
PID 516 wrote to memory of 792	516	LetGo.exe	18
PID 516 wrote to memory of 792	516	LetGo.exe	18
PID 516 wrote to memory of 792	516	LetGo.exe	18
PID 516 wrote to memory of 792	516	LetGo.exe	18
PID 516 wrote to memory of 900	516	LetGo.exe	16
PID 516 wrote to memory of 900	516	LetGo.exe	16
PID 516 wrote to memory of 900	516	LetGo.exe	16
PID 516 wrote to memory of 900	516	LetGo.exe	16
PID 516 wrote to memory of 900	516	LetGo.exe	16
PID 516 wrote to memory of 900	516	LetGo.exe	16
PID 516 wrote to memory of 952	516	LetGo.exe	15
PID 516 wrote to memory of 952	516	LetGo.exe	15
PID 516 wrote to memory of 952	516	LetGo.exe	15
PID 516 wrote to memory of 952	516	LetGo.exe	15
PID 516 wrote to memory of 952	516	LetGo.exe	15
PID 516 wrote to memory of 952	516	LetGo.exe	15
PID 516 wrote to memory of 60	516	LetGo.exe	9
PID 516 wrote to memory of 60	516	LetGo.exe	9
PID 516 wrote to memory of 60	516	LetGo.exe	9
PID 516 wrote to memory of 60	516	LetGo.exe	9
PID 516 wrote to memory of 60	516	LetGo.exe	9
PID 516 wrote to memory of 60	516	LetGo.exe	9
PID 516 wrote to memory of 444	516	LetGo.exe	13
PID 516 wrote to memory of 444	516	LetGo.exe	13
PID 516 wrote to memory of 444	516	LetGo.exe	13
PID 516 wrote to memory of 444	516	LetGo.exe	13
PID 516 wrote to memory of 444	516	LetGo.exe	13
PID 516 wrote to memory of 444	516	LetGo.exe	13
PID 516 wrote to memory of 696	516	LetGo.exe	10
PID 516 wrote to memory of 696	516	LetGo.exe	10
PID 516 wrote to memory of 696	516	LetGo.exe	10
PID 516 wrote to memory of 696	516	LetGo.exe	10
PID 516 wrote to memory of 696	516	LetGo.exe	10
PID 516 wrote to memory of 696	516	LetGo.exe	10
PID 516 wrote to memory of 916	516	LetGo.exe	11
PID 516 wrote to memory of 916	516	LetGo.exe	11
PID 516 wrote to memory of 916	516	LetGo.exe	11
PID 516 wrote to memory of 916	516	LetGo.exe	11

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:664

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:588
- C:\Windows\system32\dwm.exe
  "dwm.exe"
  2⤵
  PID:60
- C:\Windows\system32\fontdrvhost.exe
  "fontdrvhost.exe"
  2⤵
  PID:784

C:\Windows\system32\fontdrvhost.exe
"fontdrvhost.exe"
1⤵
PID:776

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts
1⤵
PID:696

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService
1⤵
PID:916

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc
1⤵
PID:992

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc
1⤵
PID:444

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork -p
1⤵
PID:1072

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM
1⤵
PID:952

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k RPCSS -p
1⤵
PID:900

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
1⤵
PID:1120
- C:\Windows\system32\taskhostw.exe
  taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
  2⤵
  PID:2852

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch -p
1⤵
PID:792
- C:\Windows\System32\RuntimeBroker.exe
  C:\Windows\System32\RuntimeBroker.exe -Embedding
  2⤵
  PID:1800
- C:\Windows\system32\backgroundTaskHost.exe
  "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
  2⤵
  PID:5100
- C:\Windows\system32\backgroundTaskHost.exe
  "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
  2⤵
  PID:4700
- C:\Windows\system32\SppExtComObj.exe
  C:\Windows\system32\SppExtComObj.exe -Embedding
  2⤵
  PID:3384
- C:\Windows\system32\wbem\wmiprvse.exe
  C:\Windows\system32\wbem\wmiprvse.exe
  2⤵
  PID:5008
- C:\Windows\system32\DllHost.exe
  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
  2⤵
  PID:3996
- C:\Windows\System32\RuntimeBroker.exe
  C:\Windows\System32\RuntimeBroker.exe -Embedding
  2⤵
  PID:3724
- C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
  "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
  2⤵
  PID:3512
- C:\Windows\System32\RuntimeBroker.exe
  C:\Windows\System32\RuntimeBroker.exe -Embedding
  2⤵
  PID:3428
- C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
  "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
  2⤵
  PID:3360
- C:\Windows\system32\DllHost.exe
  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
  2⤵
  PID:3252

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc
1⤵
PID:1168

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog
1⤵
PID:1212

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager
1⤵
PID:1324
- C:\Windows\system32\sihost.exe
  sihost.exe
  2⤵
  PID:2716

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc
1⤵
PID:1292

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem
1⤵
PID:1404

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s nsi
1⤵
PID:1468

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s Themes
1⤵
PID:1432

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp
1⤵
PID:1540

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s SENS
1⤵
PID:1576

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k WerSvcGroup
1⤵
PID:3832

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
PID:4140

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s W32Time
1⤵
PID:4980

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalService -p -s LicenseManager
1⤵
PID:3648

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s WinHttpAutoProxySvc
1⤵
PID:4724

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s CDPSvc
1⤵
PID:2540

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s StorSvc
1⤵
PID:1112

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wlidsvc
1⤵
PID:5092

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
1⤵
PID:428

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:2644
- C:\Users\Admin\AppData\Local\Temp\LetGo.exe
  "C:\Users\Admin\AppData\Local\Temp\LetGo.exe"
  2⤵
  - Modifies firewall policy service
  - Adds Run key to start application
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:516

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:2780

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s WpnService
1⤵
PID:2512

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt
1⤵
PID:2504

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s TrkWks
1⤵
PID:2472

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s LanmanServer
1⤵
PID:2440

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService -p -s CryptSvc
1⤵
PID:2412

C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
1⤵
PID:2404

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s IKEEXT
1⤵
PID:2316

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkServiceNetworkRestricted -p -s PolicyAgent
1⤵
PID:2308

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -s RmSvc
1⤵
PID:2148

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation
1⤵
PID:1716

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNoNetworkFirewall -p
1⤵
PID:1688

C:\Windows\System32\spoolsv.exe
C:\Windows\System32\spoolsv.exe
1⤵
PID:1056

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection
1⤵
PID:1972

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository
1⤵
PID:1956

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
1⤵
PID:1900

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService -p -s Dnscache
1⤵
PID:1892

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
1⤵
PID:1792

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalService -p -s netprofm
1⤵
PID:1784

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s FontCache
1⤵
PID:1664

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s NlaSvc
1⤵
PID:1656

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder
1⤵
PID:1636

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/516-132-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/516-133-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download