smokeloader | b1462d461fd850e3728e9c815379f7d5fe5029902125a7adc6a22ce0c623086d

Analysis

max time kernel
151s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2023 10:32

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General

Target

file.exe
Size

342KB
MD5

5348c31a3f41c19565ce702a47278bb8
SHA1

f3c5ca0d4ecec18f0d5ada603c6af5b979813c57
SHA256

b1462d461fd850e3728e9c815379f7d5fe5029902125a7adc6a22ce0c623086d
SHA512

5ba6dbac0f563ba2d07c90b62309a2b5b10d7252f9ff6355b4966c4b703040c55876571711e30fd44fdf2335db281cfbcf13092ff3d61b1584c0052892e4bb72
SSDEEP

6144:GLOleIm5qNMEipEwRlJgOjq7VWRFBMolz90/9TP7m:GqlhwScjS7VWR5lzk5q

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/384-133-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/4888-135-0x00000000005F0000-0x00000000005F9000-memory.dmp	family_smokeloader
behavioral2/memory/384-136-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/384-137-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Suspicious use of SetThreadContext 1 IoCs

Processes:

file.exe

description pid process target process

PID 4888 set thread context of 384 4888 file.exe file.exe

description	pid	process	target process
PID 4888 set thread context of 384	4888	file.exe	file.exe

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 3 IoCs

Processes:

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

file.exe

pid	process
384	file.exe
384	file.exe
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

964
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

file.exe

pid process

384 file.exe

pid	process
964

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

description	pid	process
Token: SeShutdownPrivilege	964
Token: SeCreatePagefilePrivilege	964
Token: SeShutdownPrivilege	964
Token: SeCreatePagefilePrivilege	964
Token: SeShutdownPrivilege	964
Token: SeCreatePagefilePrivilege	964
Token: SeShutdownPrivilege	964
Token: SeCreatePagefilePrivilege	964
Token: SeShutdownPrivilege	964
Token: SeCreatePagefilePrivilege	964

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

pid process

964
964

pid	process
964
964

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

file.exe

description	pid	process	target process
PID 4888 wrote to memory of 384	4888	file.exe	file.exe
PID 4888 wrote to memory of 384	4888	file.exe	file.exe
PID 4888 wrote to memory of 384	4888	file.exe	file.exe
PID 4888 wrote to memory of 384	4888	file.exe	file.exe
PID 4888 wrote to memory of 384	4888	file.exe	file.exe
PID 4888 wrote to memory of 384	4888	file.exe	file.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4888

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:384

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/384-132-0x0000000000000000-mapping.dmp

Download
memory/384-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/384-136-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/384-137-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4888-134-0x000000000068E000-0x00000000006A3000-memory.dmp

Filesize
84KB

Download
memory/4888-135-0x00000000005F0000-0x00000000005F9000-memory.dmp

Filesize
36KB

Download