9a51ecde817d4a731a11a202f93076ffca9adf9bbde10138b1a46a1690add11c

General

Target

Setup.exe
Size

358.2MB
MD5

aa2152760ef244611379b8e449f5b998
SHA1

b3c11e7420f3e0ba1a0d84d575dc3154410cc805
SHA256

0b1947e86f51a393cacb9e7d35f03b1fa0a3d7242328924441bcc70d5c5edac7
SHA512

cfcfe05c4a3b56746567f1f613313d1a3f409421fab00e56750f166f9848ef44bc9a99cd1486783a1835dcc83a3b69bfcbba878b0c61cee8e4abf77b94720fd5
SSDEEP

98304:uSk6F51U6HNesMycfbbEHv0mrSCcBT7h58oql8V6QYOaBBQY:LkiXRN8KS8oqlXB+

Score

9^/10

bootkit evasion persistence trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

Setup.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ Setup.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Setup.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

Setup.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Setup.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Setup.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

Setup.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Setup.exe
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

Setup.exe

description ioc process

File opened for modification \??\PhysicalDrive0 Setup.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

Setup.exe

pid process

2004 Setup.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

Setup.exe

description pid process target process

PID 2004 set thread context of 828 2004 Setup.exe InstallUtil.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Setup.exepowershell.exe

pid process

2004 Setup.exe
1504 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Setup.exepowershell.exe

description pid process

Token: SeDebugPrivilege 2004 Setup.exe
Token: SeDebugPrivilege 1504 powershell.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Setup.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	Setup.exe

pid	process
2004	Setup.exe

description	pid	process	target process
PID 2004 set thread context of 828	2004	Setup.exe	InstallUtil.exe

pid	process
2004	Setup.exe
1504	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2004	Setup.exe
Token: SeDebugPrivilege	1504	powershell.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

Setup.exe

description	pid	process	target process
PID 2004 wrote to memory of 1504	2004	Setup.exe	powershell.exe
PID 2004 wrote to memory of 1504	2004	Setup.exe	powershell.exe
PID 2004 wrote to memory of 1504	2004	Setup.exe	powershell.exe
PID 2004 wrote to memory of 1504	2004	Setup.exe	powershell.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe
PID 2004 wrote to memory of 828	2004	Setup.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\Setup.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2004

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1504

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
PID:828

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/828-69-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/828-76-0x00000000004088ED-mapping.dmp

Download
memory/828-75-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/828-74-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/828-72-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/828-70-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1504-67-0x000000006E400000-0x000000006E9AB000-memory.dmp

Filesize
5.7MB

Download
memory/1504-68-0x000000006E400000-0x000000006E9AB000-memory.dmp

Filesize
5.7MB

Download
memory/1504-65-0x000000006E400000-0x000000006E9AB000-memory.dmp

Filesize
5.7MB

Download
memory/1504-63-0x0000000000000000-mapping.dmp

Download
memory/2004-61-0x0000000005210000-0x00000000052B6000-memory.dmp

Filesize
664KB

Download
memory/2004-54-0x0000000075D11000-0x0000000075D13000-memory.dmp

Filesize
8KB

Download
memory/2004-62-0x0000000005B30000-0x0000000005BC2000-memory.dmp

Filesize
584KB

Download
memory/2004-66-0x0000000000080000-0x0000000000B26000-memory.dmp

Filesize
10.6MB

Download
memory/2004-60-0x0000000000080000-0x0000000000B26000-memory.dmp

Filesize
10.6MB

Download
memory/2004-59-0x0000000000080000-0x0000000000B26000-memory.dmp

Filesize
10.6MB

Download
memory/2004-56-0x0000000077380000-0x0000000077500000-memory.dmp

Filesize
1.5MB

Download
memory/2004-55-0x0000000000080000-0x0000000000B26000-memory.dmp

Filesize
10.6MB

Download
memory/2004-78-0x0000000000080000-0x0000000000B26000-memory.dmp

Filesize
10.6MB

Download
memory/2004-79-0x0000000077380000-0x0000000077500000-memory.dmp

Filesize
1.5MB

Download

Analysis

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