Malware Analysis Report

2025-01-02 11:06

Sample ID 240315-hljbbsac9v
Target 22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8
SHA256 22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8
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

22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8

Threat Level: Known bad

The file 22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8 was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Deletes itself

Executes dropped EXE

Unsigned PE

Suspicious behavior: MapViewOfSection

Modifies registry class

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Checks SCSI registry key(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-15 06:49

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-15 06:49

Reported

2024-03-15 06:51

Platform

win7-20240221-en

Max time kernel

150s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.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\gvuhrau 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\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\gvuhrau N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\gvuhrau N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\gvuhrau N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\gvuhrau N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2512 wrote to memory of 2540 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\gvuhrau
PID 2512 wrote to memory of 2540 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\gvuhrau
PID 2512 wrote to memory of 2540 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\gvuhrau
PID 2512 wrote to memory of 2540 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\gvuhrau

Processes

C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe

"C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {E6ACE893-B59E-4BFB-8172-834C11554A09} S-1-5-21-2297530677-1229052932-2803917579-1000:HKULBIBU\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\gvuhrau

C:\Users\Admin\AppData\Roaming\gvuhrau

Network

Country Destination Domain Proto
US 8.8.8.8:53 nidoe.org udp
HN 138.204.181.135:80 nidoe.org tcp
HN 138.204.181.135:80 nidoe.org tcp
HN 138.204.181.135:80 nidoe.org tcp
HN 138.204.181.135:80 nidoe.org tcp
HN 138.204.181.135:80 nidoe.org tcp
HN 138.204.181.135:80 nidoe.org tcp
HN 138.204.181.135:80 nidoe.org tcp
HN 138.204.181.135:80 nidoe.org tcp
HN 138.204.181.135:80 nidoe.org tcp
HN 138.204.181.135:80 nidoe.org tcp

Files

memory/2276-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

memory/2276-2-0x0000000000220000-0x000000000022B000-memory.dmp

memory/2276-3-0x0000000000400000-0x0000000000447000-memory.dmp

memory/2276-5-0x0000000000400000-0x0000000000447000-memory.dmp

memory/1148-4-0x0000000002570000-0x0000000002586000-memory.dmp

C:\Users\Admin\AppData\Roaming\gvuhrau

MD5 33e291746ffb898efc8aa17d1773ce55
SHA1 d8b7e9845e0b9b49c84741c75870242a5e1b0613
SHA256 22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8
SHA512 2d2a84089712532ccfa7efe8de2e6ee2de37d6e2dd9da85eb982e35cfd8a14a84f3dd88b1b2bd87c98764ac97d2a1e76cae514ff00ad7ac383946151b9087f3e

memory/2540-14-0x0000000000890000-0x0000000000990000-memory.dmp

memory/2540-15-0x0000000000400000-0x0000000000447000-memory.dmp

memory/1148-16-0x0000000002E40000-0x0000000002E56000-memory.dmp

memory/2540-19-0x0000000000400000-0x0000000000447000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-15 06:49

Reported

2024-03-15 06:51

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.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\btcusju N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\btcusju N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\btcusju N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\btcusju N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.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-1-5-21-275798769-4264537674-1142822080-1000_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\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\btcusju 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: 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\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe

"C:\Users\Admin\AppData\Local\Temp\22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8.exe"

C:\Users\Admin\AppData\Roaming\btcusju

C:\Users\Admin\AppData\Roaming\btcusju

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.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 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 nidoe.org udp
AR 190.224.203.37:80 nidoe.org tcp
US 8.8.8.8:53 37.203.224.190.in-addr.arpa udp
AR 190.224.203.37:80 nidoe.org tcp
AR 190.224.203.37:80 nidoe.org tcp
AR 190.224.203.37:80 nidoe.org tcp
AR 190.224.203.37:80 nidoe.org tcp
AR 190.224.203.37:80 nidoe.org tcp
AR 190.224.203.37:80 nidoe.org tcp
AR 190.224.203.37:80 nidoe.org tcp
AR 190.224.203.37:80 nidoe.org tcp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
AR 190.224.203.37:80 nidoe.org tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.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
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp

Files

memory/1520-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

memory/1520-2-0x00000000005B0000-0x00000000005BB000-memory.dmp

memory/1520-3-0x0000000000400000-0x0000000000447000-memory.dmp

memory/3472-4-0x0000000002D50000-0x0000000002D66000-memory.dmp

memory/1520-5-0x0000000000400000-0x0000000000447000-memory.dmp

C:\Users\Admin\AppData\Roaming\btcusju

MD5 33e291746ffb898efc8aa17d1773ce55
SHA1 d8b7e9845e0b9b49c84741c75870242a5e1b0613
SHA256 22c6fdb094ba390209a23d251ba9401bc95856ab3daa93862ee9d8943bd918e8
SHA512 2d2a84089712532ccfa7efe8de2e6ee2de37d6e2dd9da85eb982e35cfd8a14a84f3dd88b1b2bd87c98764ac97d2a1e76cae514ff00ad7ac383946151b9087f3e

memory/2900-14-0x0000000000730000-0x0000000000830000-memory.dmp

memory/2900-15-0x0000000000400000-0x0000000000447000-memory.dmp

memory/3472-16-0x0000000001020000-0x0000000001036000-memory.dmp

memory/2900-17-0x0000000000400000-0x0000000000447000-memory.dmp