45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919

General

Target

45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919.exe
Size

105KB
MD5

98c82c84e321b228d9f4134805727dce
SHA1

9cf96f5f939db05e4aa9eb56852698c4ecfc5e0e
SHA256

45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919
SHA512

470f64d46ebc8501582ff2d1bc60603a082129df52de0e7607ed5845f157469394360e3fb3d4357a0cfb586edef0d6b32e22dd4cab2b8e4ccbf386950151aaeb
SSDEEP

1536:D3tUqq7W3ginVdjO/EMb/+Lik5S+H7O6oad4oM/I4kWDqWSCtB:D3W/IXnLS5r8Sad4oM/lkIqWS6B

Score

9^/10

evasion persistence upx

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:

svchost.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ svchost.exe
Executes dropped EXE 1 IoCs

Processes:

yjcltbhjqb.pre

pid process

948 yjcltbhjqb.pre

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

pid	process
948	yjcltbhjqb.pre

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4656-134-0x0000000000400000-0x000000000044B520-memory.dmp	upx
behavioral2/memory/948-144-0x0000000000400000-0x000000000044B520-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\win-helper = "C:\\Users\\Admin\\AppData\\Local\\Win\\win-helper.exe"	svchost.exe

Checks processor information in registry 2 TTPs 5 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\2	svchost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

svchost.exe

pid process

2044 svchost.exe
2044 svchost.exe

pid	process
2044	svchost.exe
2044	svchost.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919.exesvchost.exeyjcltbhjqb.pre

description	pid	process	target process
PID 4656 wrote to memory of 4920	4656	45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919.exe	svchost.exe
PID 4656 wrote to memory of 4920	4656	45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919.exe	svchost.exe
PID 4656 wrote to memory of 4920	4656	45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919.exe	svchost.exe
PID 4656 wrote to memory of 4920	4656	45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919.exe	svchost.exe
PID 4920 wrote to memory of 948	4920	svchost.exe	yjcltbhjqb.pre
PID 4920 wrote to memory of 948	4920	svchost.exe	yjcltbhjqb.pre
PID 4920 wrote to memory of 948	4920	svchost.exe	yjcltbhjqb.pre
PID 948 wrote to memory of 2044	948	yjcltbhjqb.pre	svchost.exe
PID 948 wrote to memory of 2044	948	yjcltbhjqb.pre	svchost.exe
PID 948 wrote to memory of 2044	948	yjcltbhjqb.pre	svchost.exe
PID 948 wrote to memory of 2044	948	yjcltbhjqb.pre	svchost.exe

C:\Users\Admin\AppData\Local\Temp\45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919.exe
"C:\Users\Admin\AppData\Local\Temp\45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4656

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:4920

C:\Users\Admin\AppData\Local\Temp\yjcltbhjqb.pre
C:\Users\Admin\AppData\Local\Temp\yjcltbhjqb.pre
3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:948

C:\Windows\SysWOW64\svchost.exe
svchost.exe
4⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Adds Run key to start application
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2044

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\yjcltbhjqb.pre
Filesize
105KB

MD5
98c82c84e321b228d9f4134805727dce

SHA1
9cf96f5f939db05e4aa9eb56852698c4ecfc5e0e

SHA256
45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919

SHA512
470f64d46ebc8501582ff2d1bc60603a082129df52de0e7607ed5845f157469394360e3fb3d4357a0cfb586edef0d6b32e22dd4cab2b8e4ccbf386950151aaeb

Download Submit
C:\Users\Admin\AppData\Local\Temp\yjcltbhjqb.pre
Filesize
105KB

MD5
98c82c84e321b228d9f4134805727dce

SHA1
9cf96f5f939db05e4aa9eb56852698c4ecfc5e0e

SHA256
45a50023994263d1b4b5b3eacf5402d5582353e31026733564ba35d2cb72e919

SHA512
470f64d46ebc8501582ff2d1bc60603a082129df52de0e7607ed5845f157469394360e3fb3d4357a0cfb586edef0d6b32e22dd4cab2b8e4ccbf386950151aaeb

Download Submit
memory/948-144-0x0000000000400000-0x000000000044B520-memory.dmp

Filesize
301KB

Download
memory/948-138-0x0000000000000000-mapping.dmp

Download
memory/948-143-0x00000000004A0000-0x00000000004A3000-memory.dmp

Filesize
12KB

Download
memory/948-142-0x00000000004A0000-0x00000000004A3000-memory.dmp

Filesize
12KB

Download
memory/2044-147-0x000000007F490000-0x000000007F4B0000-memory.dmp

Filesize
128KB

Download
memory/2044-146-0x000000007F490000-0x000000007F4B0000-memory.dmp

Filesize
128KB

Download
memory/2044-145-0x0000000000000000-mapping.dmp

Download
memory/4656-132-0x00000000005A0000-0x00000000005A3000-memory.dmp

Filesize
12KB

Download
memory/4656-133-0x00000000005A0000-0x00000000005A3000-memory.dmp

Filesize
12KB

Download
memory/4656-134-0x0000000000400000-0x000000000044B520-memory.dmp

Filesize
301KB

Download
memory/4656-136-0x00000000005A0000-0x00000000005A3000-memory.dmp

Filesize
12KB

Download
memory/4920-135-0x0000000000000000-mapping.dmp

Download
memory/4920-140-0x000000007FD10000-0x000000007FD30000-memory.dmp

Filesize
128KB

Download
memory/4920-137-0x000000007FD10000-0x000000007FD30000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads