4ddaa14f57744b2cac875ffb15a09e49246b9a45ab3c1122dca7aa47f820a1f2

Analysis

max time kernel
92s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30-06-2024 07:11

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General

Target

GWEventLog.dll
Size

4.5MB
MD5

1e1b855cd1cc8bc00c0dbb0fad8e75dd
SHA1

e77da5a642e76da25f20726d7490ac9333d1ca2d
SHA256

a97e9c4955460de4449b509198363ca5e35e31b29ea07766741744b559614fa8
SHA512

339fff314fc5d16e78ff3755200e7cccb2dbb8d8a040a8c3f532dd9aecf6ae0563fc2ea44be55558dda2d036aa878f0e37e716b502528eec64ffca98b73a79ed
SSDEEP

98304:PmnQGvFmplY+XPmgh/vxqPYhc335Z2nRfe5bWGHtXbVkOz0jC64GBT8T:PKmpBmCwleRfCbWLzjChGxW

Score

9^/10

evasion 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:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.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:

rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

212 rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2596 212 WerFault.exe rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

pid	process
212	rundll32.exe

pid	pid_target	process	target process
2596	212	WerFault.exe	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 3288 wrote to memory of 212	3288	rundll32.exe	rundll32.exe
PID 3288 wrote to memory of 212	3288	rundll32.exe	rundll32.exe
PID 3288 wrote to memory of 212	3288	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\GWEventLog.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3288

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\GWEventLog.dll,#1
2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 212 -s 660
3⤵
- Program crash
PID:2596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 212 -ip 212
1⤵
PID:4724

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/212-0-0x00000000770C4000-0x00000000770C6000-memory.dmp

Filesize
8KB

Download
memory/212-1-0x0000000073ED0000-0x0000000074B2F000-memory.dmp

Filesize
12.4MB

Download
memory/212-2-0x0000000073ED0000-0x0000000074B2F000-memory.dmp

Filesize
12.4MB

Download
memory/212-3-0x0000000073ED0000-0x0000000074B2F000-memory.dmp

Filesize
12.4MB

Download
memory/212-4-0x0000000073ED0000-0x0000000074B2F000-memory.dmp

Filesize
12.4MB

Download
memory/212-5-0x0000000073ED0000-0x0000000074B2F000-memory.dmp

Filesize
12.4MB

Download
memory/212-8-0x0000000073ED0000-0x0000000074B2F000-memory.dmp

Filesize
12.4MB

Download
memory/212-7-0x0000000073ED0000-0x0000000074B2F000-memory.dmp

Filesize
12.4MB

Download
memory/212-6-0x0000000073ED0000-0x0000000074B2F000-memory.dmp

Filesize
12.4MB

Download
memory/212-9-0x0000000073ED0000-0x0000000074B2F000-memory.dmp

Filesize
12.4MB

Download