Malware Analysis Report

2024-12-08 00:44

Sample ID 240121-1hlldsbbf5
Target SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe
SHA256 1de489805895c5c666547d588f1d762dbc28b6be48002b99e3404957ecf8fc08
Tags
smokeloader pub3 backdoor 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

1de489805895c5c666547d588f1d762dbc28b6be48002b99e3404957ecf8fc08

Threat Level: Known bad

The file SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe was found to be: Known bad.

Malicious Activity Summary

smokeloader pub3 backdoor trojan

SmokeLoader

Executes dropped EXE

Deletes itself

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Modifies registry class

Checks SCSI registry key(s)

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Uses Task Scheduler COM API

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-21 21:39

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-21 21:39

Reported

2024-01-21 21:41

Platform

win7-20231129-en

Max time kernel

150s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\swcscrr N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\swcscrr N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\swcscrr N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\swcscrr N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\swcscrr N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A N/A N/A
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Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A N/A N/A
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Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2452 wrote to memory of 2564 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\swcscrr
PID 2452 wrote to memory of 2564 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\swcscrr
PID 2452 wrote to memory of 2564 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\swcscrr
PID 2452 wrote to memory of 2564 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\swcscrr

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe

"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {3EF96BE3-BD23-4E26-A598-329986809C50} S-1-5-21-3470981204-343661084-3367201002-1000:GLTGRJAG\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\swcscrr

C:\Users\Admin\AppData\Roaming\swcscrr

Network

Country Destination Domain Proto
US 8.8.8.8:53 gxutc2c.com udp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp
KR 175.120.254.9:80 gxutc2c.com tcp

Files

memory/2020-2-0x0000000000220000-0x000000000022B000-memory.dmp

memory/2020-3-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2020-1-0x0000000000560000-0x0000000000660000-memory.dmp

memory/2020-5-0x0000000000400000-0x000000000043B000-memory.dmp

memory/1340-4-0x0000000002530000-0x0000000002546000-memory.dmp

C:\Users\Admin\AppData\Roaming\swcscrr

MD5 d7eb93b2a91b8ffee46a4a7d2e9dd232
SHA1 66a5a5f393a5e5b6ab818ccc54df43dc0f27f3cd
SHA256 1de489805895c5c666547d588f1d762dbc28b6be48002b99e3404957ecf8fc08
SHA512 393ea6c24b91902fc5952a686371c4b9111aa2330dc269ebe71eb1fe884f34da642ca7c64bd578d27529a50db0abb0159b71b2215bcd2ef94015c295ed4ca2be

memory/2564-15-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2564-14-0x0000000000230000-0x0000000000330000-memory.dmp

memory/1340-16-0x0000000003ED0000-0x0000000003EE6000-memory.dmp

memory/2564-17-0x0000000000400000-0x000000000043B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-21 21:39

Reported

2024-01-21 21:41

Platform

win10v2004-20231222-en

Max time kernel

150s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\cigcshv N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\cigcshv N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\cigcshv N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\cigcshv N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ N/A N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ N/A N/A
Key created \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ N/A N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\cigcshv N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
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: SeManageVolumePrivilege N/A C:\Windows\System32\svchost.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

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
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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\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe

"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.31143.exe"

C:\Users\Admin\AppData\Roaming\cigcshv

C:\Users\Admin\AppData\Roaming\cigcshv

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k UnistackSvcGroup

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 189.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 133.113.22.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 195.233.44.23.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 183.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 gxutc2c.com udp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
US 8.8.8.8:53 42.52.187.190.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 199.178.17.96.in-addr.arpa udp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
US 8.8.8.8:53 73.179.17.96.in-addr.arpa udp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
US 8.8.8.8:53 206.178.17.96.in-addr.arpa udp
PE 190.187.52.42:80 gxutc2c.com tcp
PE 190.187.52.42:80 gxutc2c.com tcp
US 8.8.8.8:53 190.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.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

Files

memory/2096-1-0x0000000000500000-0x0000000000600000-memory.dmp

memory/2096-2-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2096-3-0x00000000004D0000-0x00000000004DB000-memory.dmp

memory/3568-4-0x0000000006C20000-0x0000000006C36000-memory.dmp

memory/2096-5-0x0000000000400000-0x000000000043B000-memory.dmp

C:\Users\Admin\AppData\Roaming\cigcshv

MD5 d7eb93b2a91b8ffee46a4a7d2e9dd232
SHA1 66a5a5f393a5e5b6ab818ccc54df43dc0f27f3cd
SHA256 1de489805895c5c666547d588f1d762dbc28b6be48002b99e3404957ecf8fc08
SHA512 393ea6c24b91902fc5952a686371c4b9111aa2330dc269ebe71eb1fe884f34da642ca7c64bd578d27529a50db0abb0159b71b2215bcd2ef94015c295ed4ca2be

memory/2748-14-0x0000000000670000-0x0000000000770000-memory.dmp

memory/2748-15-0x0000000000400000-0x000000000043B000-memory.dmp

memory/3568-16-0x0000000002950000-0x0000000002966000-memory.dmp

memory/2748-17-0x0000000000400000-0x000000000043B000-memory.dmp

memory/3320-21-0x0000027AFF540000-0x0000027AFF550000-memory.dmp

memory/3320-37-0x0000027AFF640000-0x0000027AFF650000-memory.dmp

memory/3320-53-0x0000027AFF9A0000-0x0000027AFF9A1000-memory.dmp

memory/3320-55-0x0000027AFF9D0000-0x0000027AFF9D1000-memory.dmp

memory/3320-56-0x0000027AFF9D0000-0x0000027AFF9D1000-memory.dmp

memory/3320-57-0x0000027AFFAE0000-0x0000027AFFAE1000-memory.dmp