74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2

General

Target

74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe
Size

291KB
MD5

591d35eceed971ffc728aa479785f727
SHA1

a571ee77a4dde3ad1b7ce5336740c99e3d5e5510
SHA256

74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2
SHA512

12f9823bc9a8d0700c3530ee46093806fb7308fe5cdee378806961ab16a94e136a7bc4f0a4c88c751a637179f077a8a6c537f4884f0834d29a47868f8d0d49e8
SSDEEP

6144:9KTzhGiX6SRfPcKaqp5oe5dPLHgm2sYHr5AvnMt9LRlmIeKr/A3VAy0aHNG:9KT6i3LpeQPLHgm2sYHr6nWlmIeKLA3i

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

wkhbkgno.exe

pid process

992 wkhbkgno.exe

pid	process
992	wkhbkgno.exe

Loads dropped DLL 2 IoCs

Processes:

74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe

pid	process
1872	74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe
1872	74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wkhbkgno.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\NTkxRDM1RUNFRUQ5NzFGRk = "C:\\ProgramData\\wkhbkgno.exe"	wkhbkgno.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exewkhbkgno.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	wkhbkgno.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	wkhbkgno.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exewkhbkgno.exe

description	pid	process
Token: SeDebugPrivilege	1872	74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe
Token: SeDebugPrivilege	992	wkhbkgno.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe

description	pid	process	target process
PID 1872 wrote to memory of 992	1872	74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe	wkhbkgno.exe
PID 1872 wrote to memory of 992	1872	74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe	wkhbkgno.exe
PID 1872 wrote to memory of 992	1872	74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe	wkhbkgno.exe
PID 1872 wrote to memory of 992	1872	74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe	wkhbkgno.exe

C:\Users\Admin\AppData\Local\Temp\74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe
"C:\Users\Admin\AppData\Local\Temp\74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1872

C:\ProgramData\wkhbkgno.exe
"C:\ProgramData\wkhbkgno.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:992

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\wkhbkgno.exe
Filesize
291KB

MD5
591d35eceed971ffc728aa479785f727

SHA1
a571ee77a4dde3ad1b7ce5336740c99e3d5e5510

SHA256
74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2

SHA512
12f9823bc9a8d0700c3530ee46093806fb7308fe5cdee378806961ab16a94e136a7bc4f0a4c88c751a637179f077a8a6c537f4884f0834d29a47868f8d0d49e8

Download Submit
C:\ProgramData\wkhbkgno.exe
Filesize
291KB

MD5
591d35eceed971ffc728aa479785f727

SHA1
a571ee77a4dde3ad1b7ce5336740c99e3d5e5510

SHA256
74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2

SHA512
12f9823bc9a8d0700c3530ee46093806fb7308fe5cdee378806961ab16a94e136a7bc4f0a4c88c751a637179f077a8a6c537f4884f0834d29a47868f8d0d49e8

Download Submit
\ProgramData\wkhbkgno.exe
Filesize
291KB

MD5
591d35eceed971ffc728aa479785f727

SHA1
a571ee77a4dde3ad1b7ce5336740c99e3d5e5510

SHA256
74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2

SHA512
12f9823bc9a8d0700c3530ee46093806fb7308fe5cdee378806961ab16a94e136a7bc4f0a4c88c751a637179f077a8a6c537f4884f0834d29a47868f8d0d49e8

Download Submit
\ProgramData\wkhbkgno.exe
Filesize
291KB

MD5
591d35eceed971ffc728aa479785f727

SHA1
a571ee77a4dde3ad1b7ce5336740c99e3d5e5510

SHA256
74141b33cb70767bc1f209294a7adc1ae49023d8bc787949af279c8a887a31d2

SHA512
12f9823bc9a8d0700c3530ee46093806fb7308fe5cdee378806961ab16a94e136a7bc4f0a4c88c751a637179f077a8a6c537f4884f0834d29a47868f8d0d49e8

Download Submit
memory/992-59-0x0000000000000000-mapping.dmp

Download
memory/992-64-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download
memory/992-65-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download
memory/1872-54-0x0000000075EC1000-0x0000000075EC3000-memory.dmp

Filesize
8KB

Download
memory/1872-55-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download
memory/1872-56-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download
memory/1872-63-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads