smokeloader | 843ad82984513d049fcbf1258c0a2cf71fd519ad98a272e54ea95d42422a24bb

General

Target

file.exe
Size

213KB
MD5

29c2d7eec8802f3967aafcd0d16628b1
SHA1

efe099762635d1d6284afb88225029bf89adec5d
SHA256

843ad82984513d049fcbf1258c0a2cf71fd519ad98a272e54ea95d42422a24bb
SHA512

755316646a0fcf8fef69832e33e8c611eb02e9e88e6416f7a19c499acab82f9a0e15d49fa92de70aaa5085f05a591e33456f8df61af5534cdb43c3f652e1502a
SSDEEP

3072:XG6IE/WIaxT8XyWiTmZTb05a+f4IOCX9:N/0oXyWiTQh+fN

Score

10^/10

smokeloader pub1 backdoor persistence trojan

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2022

C2

http://trad-einmyus.com/index.php

http://tradein-myus.com/index.php

http://trade-inmyus.com/index.php

rc4.i32

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

Modifies Installed Components in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Deletes itself 1 IoCs

Processes:

pid process

3300
Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.

Query Registry
T1012

Peripheral Device Discovery
T1120

System Information Discovery
T1082

Processes:

explorer.exe

description ioc process

File opened (read-only) \??\D: explorer.exe
File opened (read-only) \??\F: explorer.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

79 drive.google.com
80 drive.google.com

pid	process
3300

description	ioc	process
File opened (read-only)	\??\D:	explorer.exe
File opened (read-only)	\??\F:	explorer.exe

flow	ioc
79	drive.google.com
80	drive.google.com

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

file.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	file.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	file.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	file.exe

Modifies registry class 9 IoCs

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-3808065738-1666277613-1125846146-1000\{A7C5D543-400C-4464-A2A2-A47115DA1248}	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

file.exe

pid	process
3248	file.exe
3248	file.exe
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
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3300
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3300
3300
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3300
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3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300
3300

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

file.exe

pid process

3248 file.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

Processes:

explorer.exe

description	pid	process
Token: SeShutdownPrivilege	3300
Token: SeCreatePagefilePrivilege	3300
Token: SeShutdownPrivilege	3300
Token: SeCreatePagefilePrivilege	3300
Token: SeShutdownPrivilege	3328	explorer.exe
Token: SeCreatePagefilePrivilege	3328	explorer.exe
Token: SeShutdownPrivilege	3328	explorer.exe
Token: SeCreatePagefilePrivilege	3328	explorer.exe
Token: SeShutdownPrivilege	3328	explorer.exe
Token: SeCreatePagefilePrivilege	3328	explorer.exe
Token: SeShutdownPrivilege	3328	explorer.exe
Token: SeCreatePagefilePrivilege	3328	explorer.exe
Token: SeShutdownPrivilege	3328	explorer.exe
Token: SeCreatePagefilePrivilege	3328	explorer.exe

Suspicious use of FindShellTrayWindow 7 IoCs

Processes:

explorer.exe

pid process

3328 explorer.exe
3328 explorer.exe
3328 explorer.exe
3328 explorer.exe
3328 explorer.exe
3328 explorer.exe
3328 explorer.exe

Suspicious use of SendNotifyMessage 9 IoCs

Processes:

explorer.exe

pid	process
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

cmd.execmd.exe

description	pid	process	target process
PID 3300 wrote to memory of 2416	3300		cmd.exe
PID 3300 wrote to memory of 2416	3300		cmd.exe
PID 2416 wrote to memory of 3464	2416	cmd.exe	reg.exe
PID 2416 wrote to memory of 3464	2416	cmd.exe	reg.exe
PID 3300 wrote to memory of 3052	3300		cmd.exe
PID 3300 wrote to memory of 3052	3300		cmd.exe
PID 3052 wrote to memory of 3668	3052	cmd.exe	reg.exe
PID 3052 wrote to memory of 3668	3052	cmd.exe	reg.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3248

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1408 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:1164

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BBC9.bat" "
1⤵
- Suspicious use of WriteProcessMemory
PID:2416

C:\Windows\system32\reg.exe
reg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 1
2⤵
PID:3464

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CC06.bat" "
1⤵
- Suspicious use of WriteProcessMemory
PID:3052

C:\Windows\system32\reg.exe
reg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 1
2⤵
PID:3668

C:\Windows\explorer.exe
explorer.exe
1⤵
- Modifies Installed Components in the registry
- Enumerates connected drives
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3328

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
1⤵
PID:852

C:\Windows\explorer.exe
explorer.exe
1⤵
PID:3536

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
1⤵
PID:3876

C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
1⤵
PID:2640

C:\Windows\explorer.exe
explorer.exe
1⤵
PID:4572

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
1⤵
PID:736

C:\Windows\explorer.exe
explorer.exe
1⤵
PID:2008

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

Peripheral Device Discovery

2

T1120

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\80237EE4964FC9C409AAF55BF996A292_D46D6FA25B74360E1349F9015B5CCE53
Filesize
471B

MD5
a962cde9b0ca0bd1ced7036af84b2cfe

SHA1
3514554251d09117f198a799f2068e66978a3f6d

SHA256
97afb92afdfc3920dc8f36ccfd75fc13e6ec4161e3c9704c450da4f1cb0937f9

SHA512
16e5eef5bcc499e0e4d471a37df8aa3b701be4f4dee45f3f9181906943394df217c06b399e3451e73e9a996fead5d0cf1420902611ee7954da0def7721710df6

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\80237EE4964FC9C409AAF55BF996A292_D46D6FA25B74360E1349F9015B5CCE53
Filesize
412B

MD5
646d7252baa43e7c32957178f2d667e5

SHA1
1d313c98d27b55ff03e1a010441c12ac2f939a88

SHA256
d1a342334ba4821a163a55fd328ad6cf8ff85a87ad3ef0628a5e66a4c1a44a80

SHA512
2c543a2716f8a99ec995a8d02e60db19a043c73b45bf7df008d543409e50ef01d97e7ad8794a3ff65942fe65a77c3c1711648f03097fa2657872ddb466a65971

Download Submit
C:\Users\Admin\AppData\Local\Temp\BBC9.bat
Filesize
77B

MD5
55cc761bf3429324e5a0095cab002113

SHA1
2cc1ef4542a4e92d4158ab3978425d517fafd16d

SHA256
d6cceb3c71b80403364bf142f2fa4624ee0be36a49bac25ed45a497cf1ce9c3a

SHA512
33f9f5cad22d291077787c7df510806e4ac31f453d288712595af6debe579fabed6cdf4662e46e6fa94de135b161e739f55cfae05c36c87af85ed6a6ad1c9155

Download Submit
memory/2640-35-0x000001B193F00000-0x000001B194000000-memory.dmp

Filesize
1024KB

Download
memory/2640-65-0x000001B194FB0000-0x000001B194FD0000-memory.dmp

Filesize
128KB

Download
memory/2640-40-0x000001B194FF0000-0x000001B195010000-memory.dmp

Filesize
128KB

Download
memory/2640-71-0x000001B1953C0000-0x000001B1953E0000-memory.dmp

Filesize
128KB

Download
memory/3248-4-0x0000000000400000-0x0000000002722000-memory.dmp

Filesize
35.1MB

Download
memory/3248-6-0x0000000000400000-0x0000000002722000-memory.dmp

Filesize
35.1MB

Download
memory/3248-9-0x0000000002880000-0x000000000288B000-memory.dmp

Filesize
44KB

Download
memory/3248-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3248-1-0x0000000002A80000-0x0000000002B80000-memory.dmp

Filesize
1024KB

Download
memory/3248-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3248-2-0x0000000002880000-0x000000000288B000-memory.dmp

Filesize
44KB

Download
memory/3300-5-0x0000000002FC0000-0x0000000002FD6000-memory.dmp

Filesize
88KB

Download
memory/3300-23-0x0000000002FB0000-0x0000000002FB1000-memory.dmp

Filesize
4KB

Download
memory/3536-33-0x00000000046B0000-0x00000000046B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads