46dc49be65d7165e2a6009854a4f27f0088230199e61e0555cb1bd266535874a

Analysis

max time kernel
126s
max time network
77s
platform
windows7_x64
resource
win7v200722
submitted
11-08-2020 12:30

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General

Target

foo/4cfe8f3aa1592035b9a2cdb2c4f54c77.exe

Score

9^/10

evasion

Malware Config

Signatures

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

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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:

4cfe8f3aa1592035b9a2cdb2c4f54c77.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4cfe8f3aa1592035b9a2cdb2c4f54c77.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4cfe8f3aa1592035b9a2cdb2c4f54c77.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

4cfe8f3aa1592035b9a2cdb2c4f54c77.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Wine	4cfe8f3aa1592035b9a2cdb2c4f54c77.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

4cfe8f3aa1592035b9a2cdb2c4f54c77.exe

pid	Process
1512	4cfe8f3aa1592035b9a2cdb2c4f54c77.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
1920	1512	WerFault.exe	23

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

4cfe8f3aa1592035b9a2cdb2c4f54c77.exeWerFault.exe

pid	Process
1512	4cfe8f3aa1592035b9a2cdb2c4f54c77.exe
1920	WerFault.exe
1920	WerFault.exe
1920	WerFault.exe
1920	WerFault.exe
1920	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description	pid	Process
Token: SeDebugPrivilege	1920	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

4cfe8f3aa1592035b9a2cdb2c4f54c77.exe

description	pid	Process	procid_target
PID 1512 wrote to memory of 1920	1512	4cfe8f3aa1592035b9a2cdb2c4f54c77.exe	24
PID 1512 wrote to memory of 1920	1512	4cfe8f3aa1592035b9a2cdb2c4f54c77.exe	24
PID 1512 wrote to memory of 1920	1512	4cfe8f3aa1592035b9a2cdb2c4f54c77.exe	24
PID 1512 wrote to memory of 1920	1512	4cfe8f3aa1592035b9a2cdb2c4f54c77.exe	24

C:\Users\Admin\AppData\Local\Temp\foo\4cfe8f3aa1592035b9a2cdb2c4f54c77.exe
"C:\Users\Admin\AppData\Local\Temp\foo\4cfe8f3aa1592035b9a2cdb2c4f54c77.exe"
1⤵
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 768
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1512-0-0x0000000004CE0000-0x0000000004CF1000-memory.dmp

Filesize
68KB

Download
memory/1512-1-0x00000000050F0000-0x0000000005101000-memory.dmp

Filesize
68KB

Download
memory/1512-2-0x00000000743A0000-0x0000000074A8E000-memory.dmp

Filesize
6.9MB

Download
memory/1512-3-0x0000000001180000-0x0000000001181000-memory.dmp

Filesize
4KB

Download
memory/1920-5-0x0000000000000000-mapping.dmp

Download
memory/1920-6-0x0000000002160000-0x0000000002171000-memory.dmp

Filesize
68KB

Download
memory/1920-9-0x0000000002530000-0x0000000002541000-memory.dmp

Filesize
68KB

Download