smokeloader | 5d26260b8614328b07031f6f3ff69981c2618bd3324cd3314fe0c0727cee93d6

Analysis

max time kernel
150s
max time network
58s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
06-02-2023 18:34

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General

Target

file.exe
Size

299KB
MD5

0f47e30dceb07800e7e21731a66c8c9c
SHA1

1e8fa15dea6b3fc567a65f6afb2a1a300fdbd20b
SHA256

5d26260b8614328b07031f6f3ff69981c2618bd3324cd3314fe0c0727cee93d6
SHA512

40a1830ff485502d59fc5df5509ca0ac750388244453d02d007bbdd4756e2f8b2164e2156cd389ea8b2182cc86353fe388072353c3bf6ffec351a9a07c626c00
SSDEEP

3072:CXIb6bkDLnnIRGEiuZKsb7cB0aNYx9Jo3T8ZkbN/uQjiMTE5x8tgAa1M:C4TDLnfEiucM7cB0aNN8Zg/uQj9q9Aa

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1552-55-0x0000000000402DD8-mapping.dmp	family_smokeloader
behavioral1/memory/1552-54-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/1532-58-0x0000000000220000-0x0000000000229000-memory.dmp	family_smokeloader
behavioral1/memory/1552-59-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/1552-60-0x0000000000400000-0x0000000000409000-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 1532 set thread context of 1552 1532 file.exe file.exe

description	pid	process	target process
PID 1532 set thread context of 1552	1532	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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

file.exe

pid	process
1552	file.exe
1552	file.exe
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

1284
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

file.exe

pid process

1552 file.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

pid process

1284
1284
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

pid process

1284
1284

pid	process
1284

pid	process
1284
1284

pid	process
1284
1284

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

file.exe

description	pid	process	target process
PID 1532 wrote to memory of 1552	1532	file.exe	file.exe
PID 1532 wrote to memory of 1552	1532	file.exe	file.exe
PID 1532 wrote to memory of 1552	1532	file.exe	file.exe
PID 1532 wrote to memory of 1552	1532	file.exe	file.exe
PID 1532 wrote to memory of 1552	1532	file.exe	file.exe
PID 1532 wrote to memory of 1552	1532	file.exe	file.exe
PID 1532 wrote to memory of 1552	1532	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:1532

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:1552

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/1284-61-0x000007FEF5CB0000-0x000007FEF5DF3000-memory.dmp

Filesize
1.3MB

Download
memory/1284-62-0x000007FEDA9B0000-0x000007FEDA9BA000-memory.dmp

Filesize
40KB

Download
memory/1284-63-0x000007FEF5CB0000-0x000007FEF5DF3000-memory.dmp

Filesize
1.3MB

Download
memory/1284-64-0x000007FEDA9B0000-0x000007FEDA9BA000-memory.dmp

Filesize
40KB

Download
memory/1532-56-0x000000000055C000-0x0000000000571000-memory.dmp

Filesize
84KB

Download
memory/1532-58-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/1552-55-0x0000000000402DD8-mapping.dmp

Download
memory/1552-54-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1552-57-0x0000000074DA1000-0x0000000074DA3000-memory.dmp

Filesize
8KB

Download
memory/1552-59-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1552-60-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download