a9027c6070365053c3cb91261991c71f1d3a63707df8467e413847f344b3af4d

Analysis

max time kernel
14s
max time network
50s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2022 14:13

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General

Target

TrashMalwares-main/RealBSOD.exe
Size

277KB
MD5

1092ecd10230551ef8cc90c32f103921
SHA1

d9c539c583164c23d3f62b9c9e659bbde59dcbe7
SHA256

21e9c64b50918b43b657b4b11bd1d54d70c69723fca117a077ffb38ec4cd5fec
SHA512

4fb10500f88bee5b57c255f8e776cebb5dd99729e7a2df3978347fb24541770a2f2865c54d1cf9989caaf1cb54a43f84fb4f33aadcf5135c85380927648f2b6b
SSDEEP

384:iVk9Nwhkf6tx5rzVuNbhKxl3G2P6ffBjDSi8NrFFqq79l/916UcQ55Q9MCL66pnx:4hzQNbQG2PA0eACGwnatYcFtVc6K

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

RealBSOD.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" RealBSOD.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RealBSOD.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

RealBSOD.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	RealBSOD.exe

Disables Task Manager via registry modification
evasion
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

RealBSOD.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation RealBSOD.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	RealBSOD.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RealBSOD.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RealBSOD = "C:\\Users\\Admin\\AppData\\Local\\Temp\\TrashMalwares-main\\RealBSOD.exe"	RealBSOD.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

RealBSOD.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RealBSOD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RealBSOD.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Kills process with taskkill 2 IoCs
evasion

Processes:

taskkill.exetaskkill.exe

pid process

4868 taskkill.exe
1800 taskkill.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

taskkill.exetaskkill.exe

description pid process

Token: SeDebugPrivilege 1800 taskkill.exe
Token: SeDebugPrivilege 4868 taskkill.exe

pid	process
4868	taskkill.exe
1800	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1800	taskkill.exe
Token: SeDebugPrivilege	4868	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

RealBSOD.exe

description	pid	process	target process
PID 4440 wrote to memory of 4868	4440	RealBSOD.exe	taskkill.exe
PID 4440 wrote to memory of 4868	4440	RealBSOD.exe	taskkill.exe
PID 4440 wrote to memory of 4868	4440	RealBSOD.exe	taskkill.exe
PID 4440 wrote to memory of 1800	4440	RealBSOD.exe	taskkill.exe
PID 4440 wrote to memory of 1800	4440	RealBSOD.exe	taskkill.exe
PID 4440 wrote to memory of 1800	4440	RealBSOD.exe	taskkill.exe

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

Processes:

RealBSOD.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\FilterAdministratorToken = "1"	RealBSOD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RealBSOD.exe

C:\Users\Admin\AppData\Local\Temp\TrashMalwares-main\RealBSOD.exe
"C:\Users\Admin\AppData\Local\Temp\TrashMalwares-main\RealBSOD.exe"
1⤵
- UAC bypass
- Disables RegEdit via registry modification
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4440

C:\Windows\SysWOW64\taskkill.exe
"C:\Windows\System32\taskkill.exe" /f /im wininit.exe
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4868

C:\Windows\SysWOW64\taskkill.exe
"C:\Windows\System32\taskkill.exe" /f /im svchost.exe
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1800

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1800-137-0x0000000000000000-mapping.dmp

Download
memory/4440-132-0x0000000000F40000-0x0000000000F8C000-memory.dmp

Filesize
304KB

Download
memory/4440-133-0x0000000005ED0000-0x0000000006474000-memory.dmp

Filesize
5.6MB

Download
memory/4440-134-0x00000000059C0000-0x0000000005A52000-memory.dmp

Filesize
584KB

Download
memory/4440-135-0x0000000005940000-0x000000000594A000-memory.dmp

Filesize
40KB

Download
memory/4868-136-0x0000000000000000-mapping.dmp

Download