smokeloader | f11ac106a54470a8574b728d8684a05a2d1df35745d2d8bc2ecd43bb9f3a98d2

General

Target

23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe
Size

309KB
MD5

c5e8cd4452990f730e15432bcf436b5e
SHA1

03e098a5ce05bfad96d3fac87e88b6e5f57ba987
SHA256

23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb
SHA512

5353b92fc4b58ffae9bdaf3aacab2e0847f88bc738365f5157f66a4e3927cba3d12f5d68876f0403c47cebb21c1e67c1bf88211a41c5e750164326134ec9b6e7
SSDEEP

3072:c/0oaShCZaBMkI+scKmEXs4bRYJAZbzo68LoPjigwIsXl68S71nZ1ApkYn5:jeckIBtR2Q8gnsXAR31wH

Score

10^/10

smokeloader pub1 backdoor persistence trojan vmprotect

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-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Deletes itself 1 IoCs

Processes:

pid process

1340
Executes dropped EXE 1 IoCs

Processes:

9399.exe

pid process

2712 9399.exe

pid	process
2712	9399.exe

VMProtect packed file 4 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\9399.exe	vmprotect
behavioral1/memory/2712-29-0x0000000000F80000-0x000000000186E000-memory.dmp	vmprotect
behavioral1/memory/2712-31-0x0000000000F80000-0x000000000186E000-memory.dmp	vmprotect
behavioral1/memory/2712-37-0x0000000000F80000-0x000000000186E000-memory.dmp	vmprotect

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

Web Service
T1102

Processes:

flow ioc

41 drive.google.com
42 drive.google.com

flow	ioc
41	drive.google.com
42	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:

23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe

description	ioc	process
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe

Modifies registry class 5 IoCs

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe

pid	process
2372	23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe
2372	23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340
1340

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

explorer.exe

pid process

2352 explorer.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe

pid process

2372 23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe

pid	process
2352	explorer.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

Processes:

explorer.exe

description	pid	process
Token: SeShutdownPrivilege	2352	explorer.exe
Token: SeShutdownPrivilege	2352	explorer.exe
Token: SeShutdownPrivilege	2352	explorer.exe
Token: SeShutdownPrivilege	2352	explorer.exe
Token: SeShutdownPrivilege	2352	explorer.exe
Token: SeShutdownPrivilege	2352	explorer.exe
Token: SeShutdownPrivilege	2352	explorer.exe
Token: SeShutdownPrivilege	2352	explorer.exe
Token: SeShutdownPrivilege	2352	explorer.exe
Token: SeShutdownPrivilege	2352	explorer.exe
Token: SeShutdownPrivilege	2352	explorer.exe
Token: SeShutdownPrivilege	2352	explorer.exe

Suspicious use of FindShellTrayWindow 30 IoCs

Processes:

explorer.exe

pid	process
1340
1340
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe

Suspicious use of SendNotifyMessage 20 IoCs

Processes:

explorer.exe

pid	process
1340
1340
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe
2352	explorer.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

cmd.execmd.exe

description	pid	process	target process
PID 1340 wrote to memory of 2668	1340		cmd.exe
PID 1340 wrote to memory of 2668	1340		cmd.exe
PID 1340 wrote to memory of 2668	1340		cmd.exe
PID 2668 wrote to memory of 2660	2668	cmd.exe	reg.exe
PID 2668 wrote to memory of 2660	2668	cmd.exe	reg.exe
PID 2668 wrote to memory of 2660	2668	cmd.exe	reg.exe
PID 1340 wrote to memory of 2712	1340		9399.exe
PID 1340 wrote to memory of 2712	1340		9399.exe
PID 1340 wrote to memory of 2712	1340		9399.exe
PID 1340 wrote to memory of 2712	1340		9399.exe
PID 1340 wrote to memory of 2540	1340		cmd.exe
PID 1340 wrote to memory of 2540	1340		cmd.exe
PID 1340 wrote to memory of 2540	1340		cmd.exe
PID 2540 wrote to memory of 2768	2540	cmd.exe	reg.exe
PID 2540 wrote to memory of 2768	2540	cmd.exe	reg.exe
PID 2540 wrote to memory of 2768	2540	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\23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe
"C:\Users\Admin\AppData\Local\Temp\23e793eb5359e5934565840665798105435c69d7534e547204f5566486d75bfb.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2372

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\63C2.bat" "
1⤵
- Suspicious use of WriteProcessMemory
PID:2668

C:\Windows\system32\reg.exe
reg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 1
2⤵
PID:2660

C:\Users\Admin\AppData\Local\Temp\9399.exe
C:\Users\Admin\AppData\Local\Temp\9399.exe
1⤵
- Executes dropped EXE
PID:2712

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\9733.bat" "
1⤵
- Suspicious use of WriteProcessMemory
PID:2540

C:\Windows\system32\reg.exe
reg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 1
2⤵
PID:2768

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:2352

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\63C2.bat
Filesize
77B

MD5
55cc761bf3429324e5a0095cab002113

SHA1
2cc1ef4542a4e92d4158ab3978425d517fafd16d

SHA256
d6cceb3c71b80403364bf142f2fa4624ee0be36a49bac25ed45a497cf1ce9c3a

SHA512
33f9f5cad22d291077787c7df510806e4ac31f453d288712595af6debe579fabed6cdf4662e46e6fa94de135b161e739f55cfae05c36c87af85ed6a6ad1c9155

Download Submit
C:\Users\Admin\AppData\Local\Temp\9399.exe
Filesize
5.5MB

MD5
3d03e50e7acc908a73cac1928347d0c7

SHA1
8c059a014a22d80ebbccdd2e3a3bc1e8933fd696

SHA256
fd6158af16fde7ad1e8152d53991bedf566b38f54266f0f03c5c73560e486568

SHA512
4bf7585d6feddffa6bf865335a9995f354afad3cd331172de194e0a9ac4431651ecc6a2b0aaeb3cb2d29bb95698d1de04fd0bed74ceff1c043151b1f4af8b266

Download Submit
memory/1340-64-0x0000000002970000-0x0000000002971000-memory.dmp

Filesize
4KB

Download
memory/1340-4-0x0000000002D10000-0x0000000002D26000-memory.dmp

Filesize
88KB

Download
memory/2352-66-0x00000000041A0000-0x00000000041A1000-memory.dmp

Filesize
4KB

Download
memory/2352-65-0x00000000041A0000-0x00000000041A1000-memory.dmp

Filesize
4KB

Download
memory/2372-2-0x00000000002B0000-0x00000000002BB000-memory.dmp

Filesize
44KB

Download
memory/2372-3-0x0000000000400000-0x0000000002D4B000-memory.dmp

Filesize
41.3MB

Download
memory/2372-5-0x0000000000400000-0x0000000002D4B000-memory.dmp

Filesize
41.3MB

Download
memory/2372-1-0x0000000002DD0000-0x0000000002ED0000-memory.dmp

Filesize
1024KB

Download
memory/2712-29-0x0000000000F80000-0x000000000186E000-memory.dmp

Filesize
8.9MB

Download
memory/2712-33-0x00000000000F0000-0x00000000000F1000-memory.dmp

Filesize
4KB

Download
memory/2712-36-0x0000000077150000-0x0000000077151000-memory.dmp

Filesize
4KB

Download
memory/2712-37-0x0000000000F80000-0x000000000186E000-memory.dmp

Filesize
8.9MB

Download
memory/2712-30-0x00000000000F0000-0x00000000000F1000-memory.dmp

Filesize
4KB

Download
memory/2712-31-0x0000000000F80000-0x000000000186E000-memory.dmp

Filesize
8.9MB

Download
memory/2712-27-0x00000000000F0000-0x00000000000F1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads