zloader | 23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b

Processes:

msiexec.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ulsyg = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Guxe\\epop.dll"	msiexec.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

JavaScript code in executable 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\nss3.dll	js

Modifies service 2 TTPs 2 IoCs

persistence

Modify Registry

Modify Existing Service

T1031

Processes:

ipconfig.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NapAgent\Shas	ipconfig.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NapAgent\Qecs	ipconfig.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

regsvr32.exe

description pid process target process

PID 1260 set thread context of 1476 1260 regsvr32.exe msiexec.exe

description	pid	process	target process
PID 1260 set thread context of 1476	1260	regsvr32.exe	msiexec.exe

Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b.exe

description	ioc	process
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1592 timeout.exe
Discovers systems in the same network 1 TTPs 2 IoCs
discovery

Remote System Discovery
T1018

Processes:

net.exenet.exe

pid process

1772 net.exe
964 net.exe
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

ipconfig.exe

pid process

1612 ipconfig.exe

pid	process
1592	timeout.exe

pid	process
1772	net.exe
964	net.exe

pid	process
1612	ipconfig.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

Processes:

F420.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	F420.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	F420.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2997 IoCs

Processes:

23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b.exe

pid	process
1516	23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b.exe
1516	23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b.exe
1236
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1236

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

1236
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b.exe

pid process

1516 23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b.exe

pid	process
1236

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1476	msiexec.exe
Token: SeSecurityPrivilege	1476	msiexec.exe
Token: SeShutdownPrivilege	1236
Token: SeShutdownPrivilege	1236
Token: SeShutdownPrivilege	1236
Token: SeShutdownPrivilege	1236
Token: SeShutdownPrivilege	1236

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

pid process

1236
1236
1236
1236
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

pid process

1236
1236
1236
1236

pid	process
1236
1236
1236
1236

pid	process
1236
1236
1236
1236

Suspicious use of WriteProcessMemory 73 IoCs

Processes:

regsvr32.exeF420.execmd.exeregsvr32.exemsiexec.execmd.execmd.exenet.execmd.exe

description	pid	process	target process
PID 1236 wrote to memory of 1292	1236		regsvr32.exe
PID 1236 wrote to memory of 1292	1236		regsvr32.exe
PID 1236 wrote to memory of 1292	1236		regsvr32.exe
PID 1236 wrote to memory of 1292	1236		regsvr32.exe
PID 1236 wrote to memory of 1292	1236		regsvr32.exe
PID 1292 wrote to memory of 1260	1292	regsvr32.exe	regsvr32.exe
PID 1292 wrote to memory of 1260	1292	regsvr32.exe	regsvr32.exe
PID 1292 wrote to memory of 1260	1292	regsvr32.exe	regsvr32.exe
PID 1292 wrote to memory of 1260	1292	regsvr32.exe	regsvr32.exe
PID 1292 wrote to memory of 1260	1292	regsvr32.exe	regsvr32.exe
PID 1292 wrote to memory of 1260	1292	regsvr32.exe	regsvr32.exe
PID 1292 wrote to memory of 1260	1292	regsvr32.exe	regsvr32.exe
PID 1236 wrote to memory of 1028	1236		F420.exe
PID 1236 wrote to memory of 1028	1236		F420.exe
PID 1236 wrote to memory of 1028	1236		F420.exe
PID 1236 wrote to memory of 1028	1236		F420.exe
PID 1028 wrote to memory of 1212	1028	F420.exe	cmd.exe
PID 1028 wrote to memory of 1212	1028	F420.exe	cmd.exe
PID 1028 wrote to memory of 1212	1028	F420.exe	cmd.exe
PID 1028 wrote to memory of 1212	1028	F420.exe	cmd.exe
PID 1212 wrote to memory of 1592	1212	cmd.exe	timeout.exe
PID 1212 wrote to memory of 1592	1212	cmd.exe	timeout.exe
PID 1212 wrote to memory of 1592	1212	cmd.exe	timeout.exe
PID 1212 wrote to memory of 1592	1212	cmd.exe	timeout.exe
PID 1260 wrote to memory of 1476	1260	regsvr32.exe	msiexec.exe
PID 1260 wrote to memory of 1476	1260	regsvr32.exe	msiexec.exe
PID 1260 wrote to memory of 1476	1260	regsvr32.exe	msiexec.exe
PID 1260 wrote to memory of 1476	1260	regsvr32.exe	msiexec.exe
PID 1260 wrote to memory of 1476	1260	regsvr32.exe	msiexec.exe
PID 1260 wrote to memory of 1476	1260	regsvr32.exe	msiexec.exe
PID 1260 wrote to memory of 1476	1260	regsvr32.exe	msiexec.exe
PID 1260 wrote to memory of 1476	1260	regsvr32.exe	msiexec.exe
PID 1260 wrote to memory of 1476	1260	regsvr32.exe	msiexec.exe
PID 1476 wrote to memory of 900	1476	msiexec.exe	cmd.exe
PID 1476 wrote to memory of 900	1476	msiexec.exe	cmd.exe
PID 1476 wrote to memory of 900	1476	msiexec.exe	cmd.exe
PID 1476 wrote to memory of 900	1476	msiexec.exe	cmd.exe
PID 900 wrote to memory of 1612	900	cmd.exe	ipconfig.exe
PID 900 wrote to memory of 1612	900	cmd.exe	ipconfig.exe
PID 900 wrote to memory of 1612	900	cmd.exe	ipconfig.exe
PID 900 wrote to memory of 1612	900	cmd.exe	ipconfig.exe
PID 1476 wrote to memory of 1136	1476	msiexec.exe	cmd.exe
PID 1476 wrote to memory of 1136	1476	msiexec.exe	cmd.exe
PID 1476 wrote to memory of 1136	1476	msiexec.exe	cmd.exe
PID 1476 wrote to memory of 1136	1476	msiexec.exe	cmd.exe
PID 1136 wrote to memory of 1132	1136	cmd.exe	net.exe
PID 1136 wrote to memory of 1132	1136	cmd.exe	net.exe
PID 1136 wrote to memory of 1132	1136	cmd.exe	net.exe
PID 1136 wrote to memory of 1132	1136	cmd.exe	net.exe
PID 1132 wrote to memory of 596	1132	net.exe	net1.exe
PID 1132 wrote to memory of 596	1132	net.exe	net1.exe
PID 1132 wrote to memory of 596	1132	net.exe	net1.exe
PID 1132 wrote to memory of 596	1132	net.exe	net1.exe
PID 1476 wrote to memory of 1764	1476	msiexec.exe	cmd.exe
PID 1476 wrote to memory of 1764	1476	msiexec.exe	cmd.exe
PID 1476 wrote to memory of 1764	1476	msiexec.exe	cmd.exe
PID 1476 wrote to memory of 1764	1476	msiexec.exe	cmd.exe
PID 1764 wrote to memory of 964	1764	cmd.exe	net.exe
PID 1764 wrote to memory of 964	1764	cmd.exe	net.exe
PID 1764 wrote to memory of 964	1764	cmd.exe	net.exe
PID 1764 wrote to memory of 964	1764	cmd.exe	net.exe
PID 1476 wrote to memory of 816	1476	msiexec.exe	cmd.exe
PID 1476 wrote to memory of 816	1476	msiexec.exe	cmd.exe
PID 1476 wrote to memory of 816	1476	msiexec.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b.exe
"C:\Users\Admin\AppData\Local\Temp\23bef893e3af7cb49dc5ae0a14452ed781f841db7397dc3ebb689291fd701b6b.exe"
1⤵
- Loads dropped DLL
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1516

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\F0C5.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1292

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\F0C5.dll
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1260

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Blacklisted process makes network request
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1476

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ipconfig /all
4⤵
- Suspicious use of WriteProcessMemory
PID:900

C:\Windows\SysWOW64\ipconfig.exe
ipconfig /all
5⤵
- Modifies service
- Gathers network information
PID:1612

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c net config workstation
4⤵
- Suspicious use of WriteProcessMemory
PID:1136

C:\Windows\SysWOW64\net.exe
net config workstation
5⤵
- Suspicious use of WriteProcessMemory
PID:1132

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 config workstation
6⤵
PID:596

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c net view /all
4⤵
- Suspicious use of WriteProcessMemory
PID:1764

C:\Windows\SysWOW64\net.exe
net view /all
5⤵
- Discovers systems in the same network
PID:964

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c net view /all /domain
4⤵
PID:816

C:\Windows\SysWOW64\net.exe
net view /all /domain
5⤵
- Discovers systems in the same network
PID:1772

C:\Users\Admin\AppData\Local\Temp\F420.exe
C:\Users\Admin\AppData\Local\Temp\F420.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:1028

C:\Windows\SysWOW64\cmd.exe
cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\F420.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1212

C:\Windows\SysWOW64\timeout.exe
timeout /T 10 /NOBREAK
3⤵
- Delays execution with timeout.exe
PID:1592

C:\Windows\system32\taskeng.exe
taskeng.exe {925DF73F-AB97-42B2-B64E-7E46434DB799} S-1-5-21-2090973689-680783404-4292415065-1000:UCQFZDUI\Admin:Interactive:[1]
1⤵
PID:1028

C:\Users\Admin\AppData\Roaming\hveasuj
C:\Users\Admin\AppData\Roaming\hveasuj
2⤵
- Executes dropped EXE
PID:1812

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Registry Run Keys / Startup Folder

T1060

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

Modify Registry

3

Install Root Certificate

T1130

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Remote System Discovery

T1018

Lateral Movement

Collection

Data from Local System