Malware Analysis Report

2025-01-02 11:07

Sample ID 240314-1vyrgsad99
Target c9b70a797816a2a999dd91383ede9476
SHA256 194fac72068b59295f3c091c72d9df5a62669b18b6f4133d2b8df5e78b1f395b
Tags
smokeloader pub1 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

194fac72068b59295f3c091c72d9df5a62669b18b6f4133d2b8df5e78b1f395b

Threat Level: Known bad

The file c9b70a797816a2a999dd91383ede9476 was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Executes dropped EXE

Deletes itself

Unsigned PE

Program crash

Suspicious use of UnmapMainImage

Checks SCSI registry key(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Modifies registry class

Suspicious behavior: MapViewOfSection

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-14 21:58

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-14 21:58

Reported

2024-03-14 22:01

Platform

win7-20240221-en

Max time kernel

150s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

Description Indicator Process Target
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Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\ehceira 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\c9b70a797816a2a999dd91383ede9476.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ehceira N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ehceira N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ehceira N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\ehceira N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2492 wrote to memory of 2968 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ehceira
PID 2492 wrote to memory of 2968 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ehceira
PID 2492 wrote to memory of 2968 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ehceira
PID 2492 wrote to memory of 2968 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ehceira

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.exe

"C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {93417864-6C77-4942-B147-5509DE222AD3} S-1-5-21-1658372521-4246568289-2509113762-1000:PIRBKNPS\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\ehceira

C:\Users\Admin\AppData\Roaming\ehceira

Network

Country Destination Domain Proto
US 8.8.8.8:53 aucmoney.com udp
US 8.8.8.8:53 thegymmum.com udp
US 8.8.8.8:53 atvcampingtrips.com udp
US 8.8.8.8:53 kuapakualaman.com udp
US 8.8.8.8:53 renatazarazua.com udp
US 8.8.8.8:53 nasufmutlu.com udp

Files

memory/2232-1-0x00000000022D0000-0x00000000023D0000-memory.dmp

memory/2232-2-0x0000000000220000-0x0000000000229000-memory.dmp

memory/2232-3-0x0000000000400000-0x0000000002140000-memory.dmp

memory/1240-4-0x0000000002210000-0x0000000002226000-memory.dmp

memory/2232-5-0x0000000000400000-0x0000000002140000-memory.dmp

C:\Users\Admin\AppData\Roaming\ehceira

MD5 c9b70a797816a2a999dd91383ede9476
SHA1 2a50d1c449ebff7a4829c28c66c3efbcf47754ad
SHA256 194fac72068b59295f3c091c72d9df5a62669b18b6f4133d2b8df5e78b1f395b
SHA512 935e183a2eb323f5c42a16ae05e6269da162771ae540bae3890cbc1a06e7daaa35304b050167f7cfabb23891f500cf0604815fe6e1eb10c82193b564b912fcdb

memory/2968-14-0x00000000022A0000-0x00000000023A0000-memory.dmp

memory/2968-15-0x0000000000400000-0x0000000002140000-memory.dmp

memory/1240-16-0x0000000002230000-0x0000000002246000-memory.dmp

memory/2968-17-0x0000000000400000-0x0000000002140000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-14 21:58

Reported

2024-03-14 22:01

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.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\iiteuga 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\c9b70a797816a2a999dd91383ede9476.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\iiteuga N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\iiteuga N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\iiteuga N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.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-1-5-21-3270530367-132075249-2153716227-1000_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\c9b70a797816a2a999dd91383ede9476.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\iiteuga 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

Suspicious use of UnmapMainImage

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.exe

"C:\Users\Admin\AppData\Local\Temp\c9b70a797816a2a999dd91383ede9476.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4904 -ip 4904

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 376

C:\Users\Admin\AppData\Roaming\iiteuga

C:\Users\Admin\AppData\Roaming\iiteuga

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3260 -ip 3260

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3260 -s 368

Network

Country Destination Domain Proto
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 189.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 aucmoney.com udp
US 8.8.8.8:53 thegymmum.com udp
US 8.8.8.8:53 atvcampingtrips.com udp
US 8.8.8.8:53 kuapakualaman.com udp
US 8.8.8.8:53 renatazarazua.com udp
US 8.8.8.8:53 nasufmutlu.com udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 196.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 27.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 195.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 210.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 209.178.17.96.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/4904-1-0x0000000002280000-0x0000000002380000-memory.dmp

memory/4904-2-0x0000000003D40000-0x0000000003D49000-memory.dmp

memory/4904-3-0x0000000000400000-0x0000000002140000-memory.dmp

memory/3444-4-0x0000000004200000-0x0000000004216000-memory.dmp

memory/4904-7-0x0000000000400000-0x0000000002140000-memory.dmp

C:\Users\Admin\AppData\Roaming\iiteuga

MD5 c9b70a797816a2a999dd91383ede9476
SHA1 2a50d1c449ebff7a4829c28c66c3efbcf47754ad
SHA256 194fac72068b59295f3c091c72d9df5a62669b18b6f4133d2b8df5e78b1f395b
SHA512 935e183a2eb323f5c42a16ae05e6269da162771ae540bae3890cbc1a06e7daaa35304b050167f7cfabb23891f500cf0604815fe6e1eb10c82193b564b912fcdb

memory/3260-14-0x0000000002150000-0x0000000002250000-memory.dmp

memory/3260-15-0x0000000000400000-0x0000000002140000-memory.dmp

memory/3444-16-0x00000000022E0000-0x00000000022F6000-memory.dmp

memory/3260-19-0x0000000000400000-0x0000000002140000-memory.dmp