smokeloader | 7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e

General

Target

7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exe
Size

240KB
MD5

5cda9f770634fb63a62aa0ebcad24ef7
SHA1

dcd89bbac906e42782999d94b0587d8a3c7efbb8
SHA256

7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e
SHA512

88ebcce21f36d3850877c35ab851c420776dacc3ee0870879f5cc1896a849259cddceff762e5c247961090f7b177b97b3740bc74a39f73fab3a97138dd8a07aa
SSDEEP

3072:lHAEDKL/WUXe0NiCJxJI0ZvB0okKDyozVeTe5ufBfVvUBeU6:GLu4XQLiZ0okLmCd1VvU1

Score

10^/10

smokeloader pub1 backdoor bootkit 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
Downloads MZ/PE file

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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Deletes itself 1 IoCs

Processes:

pid process

1152
Executes dropped EXE 2 IoCs

Processes:

uwfeertA66D.exe

pid process

2216 uwfeert
908 A66D.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

40 drive.google.com
41 drive.google.com
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

A66D.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 A66D.exe

pid	process
2216	uwfeert
908	A66D.exe

flow	ioc
40	drive.google.com
41	drive.google.com

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	A66D.exe

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:

7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exeuwfeert

description	ioc	process
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	uwfeert
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	uwfeert
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	uwfeert
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exe

Modifies registry class 5 IoCs

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exe

pid	process
2100	7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exe
2100	7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exe
1152
1152
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1152

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

explorer.exe

pid process

2708 explorer.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exeuwfeert

pid process

2100 7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exe
2216 uwfeert

pid	process
2708	explorer.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

Processes:

explorer.exe

description	pid	process
Token: SeShutdownPrivilege	2708	explorer.exe
Token: SeShutdownPrivilege	2708	explorer.exe
Token: SeShutdownPrivilege	2708	explorer.exe
Token: SeShutdownPrivilege	2708	explorer.exe
Token: SeShutdownPrivilege	2708	explorer.exe
Token: SeShutdownPrivilege	2708	explorer.exe
Token: SeShutdownPrivilege	2708	explorer.exe
Token: SeShutdownPrivilege	2708	explorer.exe
Token: SeShutdownPrivilege	2708	explorer.exe
Token: SeShutdownPrivilege	2708	explorer.exe
Token: SeShutdownPrivilege	2708	explorer.exe
Token: SeShutdownPrivilege	2708	explorer.exe

Suspicious use of FindShellTrayWindow 34 IoCs

Processes:

explorer.exe

pid	process
1152
1152
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe

Suspicious use of SendNotifyMessage 23 IoCs

Processes:

explorer.exe

pid	process
1152
1152
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe
2708	explorer.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

cmd.execmd.exetaskeng.exeexplorer.exe

description	pid	process	target process
PID 1152 wrote to memory of 2676	1152		cmd.exe
PID 1152 wrote to memory of 2676	1152		cmd.exe
PID 1152 wrote to memory of 2676	1152		cmd.exe
PID 2676 wrote to memory of 2408	2676	cmd.exe	reg.exe
PID 2676 wrote to memory of 2408	2676	cmd.exe	reg.exe
PID 2676 wrote to memory of 2408	2676	cmd.exe	reg.exe
PID 1152 wrote to memory of 2392	1152		cmd.exe
PID 1152 wrote to memory of 2392	1152		cmd.exe
PID 1152 wrote to memory of 2392	1152		cmd.exe
PID 2392 wrote to memory of 2492	2392	cmd.exe	reg.exe
PID 2392 wrote to memory of 2492	2392	cmd.exe	reg.exe
PID 2392 wrote to memory of 2492	2392	cmd.exe	reg.exe
PID 2908 wrote to memory of 2216	2908	taskeng.exe	uwfeert
PID 2908 wrote to memory of 2216	2908	taskeng.exe	uwfeert
PID 2908 wrote to memory of 2216	2908	taskeng.exe	uwfeert
PID 2908 wrote to memory of 2216	2908	taskeng.exe	uwfeert
PID 2708 wrote to memory of 908	2708	explorer.exe	A66D.exe
PID 2708 wrote to memory of 908	2708	explorer.exe	A66D.exe
PID 2708 wrote to memory of 908	2708	explorer.exe	A66D.exe
PID 2708 wrote to memory of 908	2708	explorer.exe	A66D.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\7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exe
"C:\Users\Admin\AppData\Local\Temp\7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2100

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\6A76.bat" "
1⤵
- Suspicious use of WriteProcessMemory
PID:2676

C:\Windows\system32\reg.exe
reg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 1
2⤵
PID:2408

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\8DB0.bat" "
1⤵
- Suspicious use of WriteProcessMemory
PID:2392

C:\Windows\system32\reg.exe
reg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 1
2⤵
PID:2492

C:\Windows\system32\taskeng.exe
taskeng.exe {7ED07498-7786-44B1-829A-C1890E137B51} S-1-5-21-3452737119-3959686427-228443150-1000:QGTQZTRE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2908

C:\Users\Admin\AppData\Roaming\uwfeert
C:\Users\Admin\AppData\Roaming\uwfeert
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2216

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
- Suspicious use of WriteProcessMemory
PID:2708

C:\Users\Admin\AppData\Local\Temp\A66D.exe
C:\Users\Admin\AppData\Local\Temp\A66D.exe
2⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
PID:908

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

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

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\Local\Temp\6A76.bat
Filesize
77B

MD5
55cc761bf3429324e5a0095cab002113

SHA1
2cc1ef4542a4e92d4158ab3978425d517fafd16d

SHA256
d6cceb3c71b80403364bf142f2fa4624ee0be36a49bac25ed45a497cf1ce9c3a

SHA512
33f9f5cad22d291077787c7df510806e4ac31f453d288712595af6debe579fabed6cdf4662e46e6fa94de135b161e739f55cfae05c36c87af85ed6a6ad1c9155

Download Submit
C:\Users\Admin\AppData\Local\Temp\A66D.exe
Filesize
421KB

MD5
9185b776b7a981d060b0bb0d7ffed201

SHA1
427982fb520c099e8d2e831ace18294ade871aff

SHA256
91a45c416324ed3a8c184e349214e7c82d6df0df4fe6d06f3c7818c0d322373b

SHA512
cb46ca0c3156dc7b177fdb73869e13b229cbab8918dbb4b61a854765313fc9526aa5d7b944aa4b9acb77717c5ffd8fe955ba4eb48d75e2528ec844bfcf4aa5e8

Download Submit
C:\Users\Admin\AppData\Roaming\uwfeert
Filesize
240KB

MD5
5cda9f770634fb63a62aa0ebcad24ef7

SHA1
dcd89bbac906e42782999d94b0587d8a3c7efbb8

SHA256
7d44fd73a8418642bb75227ed9c37636eddb48c54d9b1b5370ccf85aa2a7ee0e

SHA512
88ebcce21f36d3850877c35ab851c420776dacc3ee0870879f5cc1896a849259cddceff762e5c247961090f7b177b97b3740bc74a39f73fab3a97138dd8a07aa

Download Submit
memory/1152-37-0x00000000021A0000-0x00000000021A1000-memory.dmp

Filesize
4KB

Download
memory/1152-4-0x0000000002580000-0x0000000002596000-memory.dmp

Filesize
88KB

Download
memory/2100-2-0x00000000001C0000-0x00000000001CB000-memory.dmp

Filesize
44KB

Download
memory/2100-3-0x0000000000400000-0x0000000002C1F000-memory.dmp

Filesize
40.1MB

Download
memory/2100-5-0x0000000000400000-0x0000000002C1F000-memory.dmp

Filesize
40.1MB

Download
memory/2100-1-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/2216-33-0x0000000000400000-0x0000000002C1F000-memory.dmp

Filesize
40.1MB

Download
memory/2216-41-0x0000000000400000-0x0000000002C1F000-memory.dmp

Filesize
40.1MB

Download
memory/2216-32-0x0000000002C90000-0x0000000002D90000-memory.dmp

Filesize
1024KB

Download
memory/2708-38-0x0000000004420000-0x0000000004436000-memory.dmp

Filesize
88KB

Download
memory/2708-42-0x00000000045C0000-0x00000000045C1000-memory.dmp

Filesize
4KB

Download
memory/2708-43-0x00000000045C0000-0x00000000045C1000-memory.dmp

Filesize
4KB

Download
memory/2708-51-0x0000000002B70000-0x0000000002B80000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads