Overview
overview
6Static
static
3processlas...64.exe
windows7-x64
4processlas...64.exe
windows10-2004-x64
4$PLUGINSDIR/INetC.dll
windows7-x64
3$PLUGINSDIR/INetC.dll
windows10-2004-x64
3$PLUGINSDI...LL.dll
windows7-x64
3$PLUGINSDI...LL.dll
windows10-2004-x64
3$PLUGINSDI...em.dll
windows7-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3CPUEater.exe
windows7-x64
1CPUEater.exe
windows10-2004-x64
1Insights.exe
windows7-x64
1Insights.exe
windows10-2004-x64
1InstallHelper.exe
windows7-x64
1InstallHelper.exe
windows10-2004-x64
1LogViewer.exe
windows7-x64
1LogViewer.exe
windows10-2004-x64
1ProcessGovernor.exe
windows7-x64
1ProcessGovernor.exe
windows10-2004-x64
1ProcessLasso.exe
windows7-x64
1ProcessLasso.exe
windows10-2004-x64
1ProcessLas...er.exe
windows7-x64
3ProcessLas...er.exe
windows10-2004-x64
5QuickUpgrade.exe
windows7-x64
6QuickUpgrade.exe
windows10-2004-x64
6ThreadRacer.exe
windows7-x64
1ThreadRacer.exe
windows10-2004-x64
1TweakScheduler.exe
windows7-x64
1TweakScheduler.exe
windows10-2004-x64
1bitsumsess...nt.exe
windows7-x64
1bitsumsess...nt.exe
windows10-2004-x64
1pl-update.cmd
windows7-x64
1pl-update.cmd
windows10-2004-x64
1Analysis
-
max time kernel
119s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
10-04-2024 16:29
Static task
static1
Behavioral task
behavioral1
Sample
processlassosetup64.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
processlassosetup64.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/INetC.dll
Resource
win7-20240319-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/INetC.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/LangDLL.dll
Resource
win7-20240221-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/LangDLL.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral7
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240221-en
Behavioral task
behavioral8
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral9
Sample
CPUEater.exe
Resource
win7-20231129-en
Behavioral task
behavioral10
Sample
CPUEater.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral11
Sample
Insights.exe
Resource
win7-20240221-en
Behavioral task
behavioral12
Sample
Insights.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral13
Sample
InstallHelper.exe
Resource
win7-20240221-en
Behavioral task
behavioral14
Sample
InstallHelper.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral15
Sample
LogViewer.exe
Resource
win7-20240215-en
Behavioral task
behavioral16
Sample
LogViewer.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral17
Sample
ProcessGovernor.exe
Resource
win7-20231129-en
Behavioral task
behavioral18
Sample
ProcessGovernor.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral19
Sample
ProcessLasso.exe
Resource
win7-20240221-en
Behavioral task
behavioral20
Sample
ProcessLasso.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral21
Sample
ProcessLassoLauncher.exe
Resource
win7-20240221-en
Behavioral task
behavioral22
Sample
ProcessLassoLauncher.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral23
Sample
QuickUpgrade.exe
Resource
win7-20240221-en
Behavioral task
behavioral24
Sample
QuickUpgrade.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral25
Sample
ThreadRacer.exe
Resource
win7-20240319-en
Behavioral task
behavioral26
Sample
ThreadRacer.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral27
Sample
TweakScheduler.exe
Resource
win7-20231129-en
Behavioral task
behavioral28
Sample
TweakScheduler.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral29
Sample
bitsumsessionagent.exe
Resource
win7-20240221-en
Behavioral task
behavioral30
Sample
bitsumsessionagent.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral31
Sample
pl-update.cmd
Resource
win7-20240221-en
Behavioral task
behavioral32
Sample
pl-update.cmd
Resource
win10v2004-20240226-en
General
-
Target
ProcessLassoLauncher.exe
-
Size
400KB
-
MD5
f973441b81d5b645db790713ef82c2d9
-
SHA1
287d2785e17728b145ee16b1518498bb1479df71
-
SHA256
5fb894a3522b7ffc90bdb08e87bcd332b0bbf14bdf4590484001478b18ca56e4
-
SHA512
3a7746b4ed9cb4a9edc41aee9d4829b4789b368999a510f60c27fd3e33c0d47f512214673e69de758e028c4701a3c4508938d1c05ceae027e87cd214b8a67a1f
-
SSDEEP
3072:UVPAgBPrsmf3c4sSxGtHrxHb81dVEI7LRbc7Vu1LIk7HoZ7WK7TVrb:WHhrsmf3c2x8Ht8fVwk1k7WG9
Malware Config
Signatures
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 ProcessLasso.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString ProcessLasso.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2968 ProcessLasso.exe -
Suspicious use of AdjustPrivilegeToken 9 IoCs
description pid Process Token: SeAssignPrimaryTokenPrivilege 2968 ProcessLasso.exe Token: SeDebugPrivilege 2968 ProcessLasso.exe Token: SeChangeNotifyPrivilege 2968 ProcessLasso.exe Token: SeIncBasePriorityPrivilege 2968 ProcessLasso.exe Token: SeIncreaseQuotaPrivilege 2968 ProcessLasso.exe Token: SeCreateGlobalPrivilege 2968 ProcessLasso.exe Token: SeProfSingleProcessPrivilege 2968 ProcessLasso.exe Token: SeBackupPrivilege 2968 ProcessLasso.exe Token: SeRestorePrivilege 2968 ProcessLasso.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2160 wrote to memory of 2968 2160 ProcessLassoLauncher.exe 28 PID 2160 wrote to memory of 2968 2160 ProcessLassoLauncher.exe 28 PID 2160 wrote to memory of 2968 2160 ProcessLassoLauncher.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\ProcessLassoLauncher.exe"C:\Users\Admin\AppData\Local\Temp\ProcessLassoLauncher.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2160 -
C:\Users\Admin\AppData\Local\Temp\ProcessLasso.exe"C:\Users\Admin\AppData\Local\Temp\ProcessLasso.exe" "C:\Users\Admin\AppData\Local\Temp\ProcessLassoLauncher.exe"2⤵
- Checks processor information in registry
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2968
-