smokeloader | 603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6

General

Target

603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exe
Size

236KB
MD5

0be195eb467b67e6c00bc5e88821d5ac
SHA1

d77634b84160ee79e8838a0c6c32a87fbfdd4b8f
SHA256

603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6
SHA512

a20b8b8d705d1366431e5386cead3a0ab41b7bb6b506ad745773aa3cd528f54b0cd155502919c82e7d6f972e64c4e7bb1fa04909cf9eb9703949cb75de046c2f
SSDEEP

3072:4/n08fMjzVnoZHkVGZMWaM75Fc8zDhLU:I3fMjzhkHkwZJaMf7hw

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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Deletes itself 1 IoCs

Processes:

pid process

1136
Executes dropped EXE 1 IoCs

Processes:

ujhcrhb

pid process

1956 ujhcrhb
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

36 drive.google.com
37 drive.google.com

pid	process
1136

pid	process
1956	ujhcrhb

flow	ioc
36	drive.google.com
37	drive.google.com

Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exeujhcrhb

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ujhcrhb
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ujhcrhb
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ujhcrhb

Modifies registry class 5 IoCs

Processes:

explorer.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exe

pid	process
2388	603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exe
2388	603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exe
1136
1136
1136
1136
1136
1136
1136
1136
1136
1136
1136
1136
1136
1136
1136
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1136
1136
1136
1136
1136

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

explorer.exe

pid process

2860 explorer.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exeujhcrhb

pid process

2388 603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exe
1956 ujhcrhb

Suspicious use of AdjustPrivilegeToken 12 IoCs

Processes:

explorer.exe

description	pid	process
Token: SeShutdownPrivilege	2860	explorer.exe
Token: SeShutdownPrivilege	2860	explorer.exe
Token: SeShutdownPrivilege	2860	explorer.exe
Token: SeShutdownPrivilege	2860	explorer.exe
Token: SeShutdownPrivilege	2860	explorer.exe
Token: SeShutdownPrivilege	2860	explorer.exe
Token: SeShutdownPrivilege	2860	explorer.exe
Token: SeShutdownPrivilege	2860	explorer.exe
Token: SeShutdownPrivilege	2860	explorer.exe
Token: SeShutdownPrivilege	2860	explorer.exe
Token: SeShutdownPrivilege	2860	explorer.exe
Token: SeShutdownPrivilege	2860	explorer.exe

Suspicious use of FindShellTrayWindow 32 IoCs

Processes:

explorer.exe

pid	process
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe

Suspicious use of SendNotifyMessage 21 IoCs

Processes:

explorer.exe

pid	process
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe
2860	explorer.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

cmd.execmd.exetaskeng.exe

description	pid	process	target process
PID 1136 wrote to memory of 2556	1136		cmd.exe
PID 1136 wrote to memory of 2556	1136		cmd.exe
PID 1136 wrote to memory of 2556	1136		cmd.exe
PID 2556 wrote to memory of 2568	2556	cmd.exe	reg.exe
PID 2556 wrote to memory of 2568	2556	cmd.exe	reg.exe
PID 2556 wrote to memory of 2568	2556	cmd.exe	reg.exe
PID 1136 wrote to memory of 3016	1136		cmd.exe
PID 1136 wrote to memory of 3016	1136		cmd.exe
PID 1136 wrote to memory of 3016	1136		cmd.exe
PID 3016 wrote to memory of 2504	3016	cmd.exe	reg.exe
PID 3016 wrote to memory of 2504	3016	cmd.exe	reg.exe
PID 3016 wrote to memory of 2504	3016	cmd.exe	reg.exe
PID 2524 wrote to memory of 1956	2524	taskeng.exe	ujhcrhb
PID 2524 wrote to memory of 1956	2524	taskeng.exe	ujhcrhb
PID 2524 wrote to memory of 1956	2524	taskeng.exe	ujhcrhb
PID 2524 wrote to memory of 1956	2524	taskeng.exe	ujhcrhb

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\603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exe
"C:\Users\Admin\AppData\Local\Temp\603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2388

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\6E0F.bat" "
1⤵
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Windows\system32\reg.exe
  reg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 1
  2⤵
  PID:2568

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\7E16.bat" "
1⤵
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Windows\system32\reg.exe
  reg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 1
  2⤵
  PID:2504

C:\Windows\system32\taskeng.exe
taskeng.exe {53A9B0B3-92FF-4271-8125-8AEF29F0182D} S-1-5-21-2297530677-1229052932-2803917579-1000:HKULBIBU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Users\Admin\AppData\Roaming\ujhcrhb
  C:\Users\Admin\AppData\Roaming\ujhcrhb
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:1956

C:\Windows\explorer.exe
explorer.exe
1⤵
- Modifies Installed Components in the registry
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\6E0F.bat

Filesize
77B

MD5
55cc761bf3429324e5a0095cab002113

SHA1
2cc1ef4542a4e92d4158ab3978425d517fafd16d

SHA256
d6cceb3c71b80403364bf142f2fa4624ee0be36a49bac25ed45a497cf1ce9c3a

SHA512
33f9f5cad22d291077787c7df510806e4ac31f453d288712595af6debe579fabed6cdf4662e46e6fa94de135b161e739f55cfae05c36c87af85ed6a6ad1c9155

Download Submit
C:\Users\Admin\AppData\Roaming\ujhcrhb

Filesize
236KB

MD5
0be195eb467b67e6c00bc5e88821d5ac

SHA1
d77634b84160ee79e8838a0c6c32a87fbfdd4b8f

SHA256
603ca6b962a0545bcc4e06308d6e68cd771d535fb34b45960f7242dc855941e6

SHA512
a20b8b8d705d1366431e5386cead3a0ab41b7bb6b506ad745773aa3cd528f54b0cd155502919c82e7d6f972e64c4e7bb1fa04909cf9eb9703949cb75de046c2f

Download Submit
memory/1136-4-0x0000000002E00000-0x0000000002E16000-memory.dmp

Filesize
88KB

Download
memory/1136-33-0x0000000003D50000-0x0000000003D66000-memory.dmp

Filesize
88KB

Download
memory/1136-41-0x0000000002620000-0x0000000002621000-memory.dmp

Filesize
4KB

Download
memory/1956-34-0x0000000000400000-0x0000000002AF8000-memory.dmp

Filesize
39.0MB

Download
memory/2388-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2388-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2388-2-0x00000000001B0000-0x00000000001BB000-memory.dmp

Filesize
44KB

Download
memory/2388-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2388-5-0x0000000000400000-0x0000000002AF8000-memory.dmp

Filesize
39.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads