Malware Analysis Report

2024-10-19 09:04

Sample ID 240315-h3dgeaag3y
Target tmp
SHA256 a7f605d4110bba430e02c7c5240e656fb3f1dd7f02dce985e9e5677169c9de55
Tags
purelogstealer smokeloader backdoor persistence stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a7f605d4110bba430e02c7c5240e656fb3f1dd7f02dce985e9e5677169c9de55

Threat Level: Known bad

The file tmp was found to be: Known bad.

Malicious Activity Summary

purelogstealer smokeloader backdoor persistence stealer trojan

SmokeLoader

PureLog Stealer

PureLog Stealer payload

Adds Run key to start application

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Modifies registry class

Suspicious use of WriteProcessMemory

Checks SCSI registry key(s)

Suspicious behavior: EnumeratesProcesses

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-15 07:15

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-15 07:15

Reported

2024-03-15 07:17

Platform

win7-20240221-en

Max time kernel

150s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\tmp.exe"

Signatures

PureLog Stealer

stealer purelogstealer

PureLog Stealer payload

Description Indicator Process Target
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SmokeLoader

trojan backdoor smokeloader

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000\Software\Microsoft\Windows\CurrentVersion\Run\SOCKET5 = "C:\\Users\\Admin\\AppData\\Roaming\\SOCKET5.exe" C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 460 set thread context of 2576 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 460 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\tmp.exe

"C:\Users\Admin\AppData\Local\Temp\tmp.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 glueberry-og.cc udp
NL 91.92.243.239:80 glueberry-og.cc tcp
US 8.8.8.8:53 glueberry-og.co udp
NL 91.92.243.239:80 glueberry-og.co tcp
US 8.8.8.8:53 glueberry-og.to udp
NL 91.92.243.239:80 glueberry-og.to tcp

Files

memory/460-0-0x0000000000140000-0x000000000018E000-memory.dmp

memory/460-1-0x0000000073EB0000-0x000000007459E000-memory.dmp

memory/460-2-0x00000000005A0000-0x00000000005EA000-memory.dmp

memory/460-3-0x0000000004810000-0x0000000004850000-memory.dmp

memory/460-4-0x0000000000630000-0x0000000000662000-memory.dmp

memory/460-5-0x0000000000780000-0x00000000007B2000-memory.dmp

memory/460-6-0x00000000007F0000-0x000000000083C000-memory.dmp

memory/2576-8-0x0000000000400000-0x000000000040B000-memory.dmp

memory/2576-9-0x0000000000400000-0x000000000040B000-memory.dmp

memory/2576-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2576-12-0x0000000000400000-0x000000000040B000-memory.dmp

memory/460-13-0x0000000073EB0000-0x000000007459E000-memory.dmp

memory/2576-14-0x0000000000400000-0x000000000040B000-memory.dmp

memory/2576-16-0x0000000000400000-0x000000000040B000-memory.dmp

memory/1344-15-0x00000000025B0000-0x00000000025C6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-15 07:15

Reported

2024-03-15 07:17

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\tmp.exe"

Signatures

PureLog Stealer

stealer purelogstealer

PureLog Stealer payload

Description Indicator Process Target
N/A N/A N/A N/A

SmokeLoader

trojan backdoor smokeloader

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SOCKET5 = "C:\\Users\\Admin\\AppData\\Roaming\\SOCKET5.exe" C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3284 set thread context of 3760 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ N/A N/A
Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ N/A N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
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Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\tmp.exe

"C:\Users\Admin\AppData\Local\Temp\tmp.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 glueberry-og.cc udp
NL 91.92.243.239:80 glueberry-og.cc tcp
US 8.8.8.8:53 glueberry-og.co udp
NL 91.92.243.239:80 glueberry-og.co tcp
US 8.8.8.8:53 glueberry-og.to udp
NL 91.92.243.239:80 glueberry-og.to tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp

Files

memory/3284-0-0x0000000000D20000-0x0000000000D6E000-memory.dmp

memory/3284-1-0x0000000075250000-0x0000000075A00000-memory.dmp

memory/3284-2-0x0000000005C00000-0x00000000061A4000-memory.dmp

memory/3284-3-0x0000000005700000-0x0000000005710000-memory.dmp

memory/3284-4-0x0000000006460000-0x00000000064AA000-memory.dmp

memory/3284-5-0x00000000056D0000-0x0000000005702000-memory.dmp

memory/3284-6-0x00000000064C0000-0x00000000064F2000-memory.dmp

memory/3284-7-0x0000000006500000-0x000000000654C000-memory.dmp

memory/3284-8-0x0000000006670000-0x0000000006702000-memory.dmp

memory/3284-9-0x0000000006710000-0x0000000006776000-memory.dmp

memory/3760-11-0x0000000000400000-0x000000000040B000-memory.dmp

memory/3760-13-0x0000000000400000-0x000000000040B000-memory.dmp

memory/3284-14-0x0000000075250000-0x0000000075A00000-memory.dmp

memory/3388-15-0x0000000002F90000-0x0000000002FA6000-memory.dmp

memory/3760-16-0x0000000000400000-0x000000000040B000-memory.dmp