Malware Analysis Report

2024-12-08 00:43

Sample ID 240121-1g9ltsafck
Target SecuriteInfo.com.Trojan.Siggen24.36475.980.31143
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 was found to be: Known bad.

Malicious Activity Summary

smokeloader pub3 backdoor trojan

SmokeLoader

Executes dropped EXE

Deletes itself

Unsigned PE

Suspicious use of UnmapMainImage

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Checks SCSI registry key(s)

Suspicious behavior: MapViewOfSection

Modifies registry class

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-21 21:38

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-21 21:38

Reported

2024-01-21 21:41

Platform

win7-20231215-en

Max time kernel

150s

Max time network

117s

Command Line

"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.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\ehcebiv N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ehcebiv N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ehcebiv N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ehcebiv 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.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.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.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\ehcebiv N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 564 wrote to memory of 3008 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ehcebiv
PID 564 wrote to memory of 3008 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ehcebiv
PID 564 wrote to memory of 3008 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ehcebiv
PID 564 wrote to memory of 3008 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ehcebiv

Processes

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.exe

"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {A2085A8B-FF92-411E-9DFF-5C1E5F4112B6} S-1-5-21-3818056530-936619650-3554021955-1000:SFVRQGEO\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\ehcebiv

C:\Users\Admin\AppData\Roaming\ehcebiv

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/2300-2-0x00000000001C0000-0x00000000001CB000-memory.dmp

memory/2300-1-0x0000000000270000-0x0000000000370000-memory.dmp

memory/2300-3-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2300-5-0x0000000000400000-0x000000000043B000-memory.dmp

memory/1192-4-0x00000000025E0000-0x00000000025F6000-memory.dmp

C:\Users\Admin\AppData\Roaming\ehcebiv

MD5 d7eb93b2a91b8ffee46a4a7d2e9dd232
SHA1 66a5a5f393a5e5b6ab818ccc54df43dc0f27f3cd
SHA256 1de489805895c5c666547d588f1d762dbc28b6be48002b99e3404957ecf8fc08
SHA512 393ea6c24b91902fc5952a686371c4b9111aa2330dc269ebe71eb1fe884f34da642ca7c64bd578d27529a50db0abb0159b71b2215bcd2ef94015c295ed4ca2be

memory/3008-14-0x0000000000570000-0x0000000000670000-memory.dmp

memory/3008-15-0x0000000000400000-0x000000000043B000-memory.dmp

memory/1192-16-0x0000000002FF0000-0x0000000003006000-memory.dmp

memory/3008-19-0x0000000000400000-0x000000000043B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-21 21:38

Reported

2024-01-21 21:41

Platform

win10v2004-20231222-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.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\uvdbtdw N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\uvdbtdw N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\uvdbtdw N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\uvdbtdw N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.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-1-5-21-3803511929-1339359695-2191195476-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ N/A N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\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.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.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\uvdbtdw 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: 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
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.exe

"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen24.36475.980.exe"

C:\Users\Admin\AppData\Roaming\uvdbtdw

C:\Users\Admin\AppData\Roaming\uvdbtdw

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 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.178.17.96.in-addr.arpa udp
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 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.113.22.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 138.201.86.20.in-addr.arpa udp
US 8.8.8.8:53 195.233.44.23.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 183.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 188.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 68.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 gxutc2c.com udp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
US 8.8.8.8:53 158.79.156.187.in-addr.arpa udp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
MX 187.156.79.158:80 gxutc2c.com tcp
US 8.8.8.8:53 187.178.17.96.in-addr.arpa udp
MX 187.156.79.158:80 gxutc2c.com tcp
US 8.8.8.8:53 14.227.111.52.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 43.58.199.20.in-addr.arpa udp

Files

memory/2600-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

memory/2600-2-0x00000000004D0000-0x00000000004DB000-memory.dmp

memory/2600-3-0x0000000000400000-0x000000000043B000-memory.dmp

memory/3452-4-0x00000000029C0000-0x00000000029D6000-memory.dmp

memory/2600-5-0x0000000000400000-0x000000000043B000-memory.dmp

C:\Users\Admin\AppData\Roaming\uvdbtdw

MD5 d7eb93b2a91b8ffee46a4a7d2e9dd232
SHA1 66a5a5f393a5e5b6ab818ccc54df43dc0f27f3cd
SHA256 1de489805895c5c666547d588f1d762dbc28b6be48002b99e3404957ecf8fc08
SHA512 393ea6c24b91902fc5952a686371c4b9111aa2330dc269ebe71eb1fe884f34da642ca7c64bd578d27529a50db0abb0159b71b2215bcd2ef94015c295ed4ca2be

memory/2484-14-0x00000000006F0000-0x00000000007F0000-memory.dmp

memory/2484-15-0x0000000000400000-0x000000000043B000-memory.dmp

memory/3452-16-0x00000000027C0000-0x00000000027D6000-memory.dmp

memory/2484-19-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2548-21-0x000001FBD8940000-0x000001FBD8950000-memory.dmp

memory/2548-37-0x000001FBD8A40000-0x000001FBD8A50000-memory.dmp

memory/2548-53-0x000001FBE0D80000-0x000001FBE0D81000-memory.dmp

memory/2548-55-0x000001FBE0DB0000-0x000001FBE0DB1000-memory.dmp

memory/2548-56-0x000001FBE0DB0000-0x000001FBE0DB1000-memory.dmp

memory/2548-57-0x000001FBE0EC0000-0x000001FBE0EC1000-memory.dmp