smokeloader | 515a347c42d336daf7f75144acd5a3fb1bc11ddb306c900808ff23f327c6155f

Analysis

max time kernel
164s
max time network
193s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 18:42

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General

Target

a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe
Size

186KB
MD5

d2e0a8b004e9d159fa9b733e6c3ce51b
SHA1

cae2d2dcb30fe1a9b6807d8cd17fe9380f288663
SHA256

a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988
SHA512

1062ac90d6dd9a9143dd87322a7c8f81e80ac68647c2fea6ca0364bdd396591897723c7d3d4f66ddc7e898aae0a7063feae350112d594310a0bf22e1145778ac
SSDEEP

3072:3DAZxCwSP3kLEw4WVko5nRp8WonpkwaMCxQQ+S02GxIsmF+0xbOj:TA4P0LEw4WB8nSwajxQQK2gI1FBxbOj

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1832-133-0x0000000002390000-0x0000000002399000-memory.dmp	family_smokeloader
behavioral2/memory/1832-137-0x0000000002390000-0x0000000002399000-memory.dmp	family_smokeloader

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

EF4D.exe

pid process

4056 EF4D.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4552 4056 WerFault.exe EF4D.exe

pid	process
4056	EF4D.exe

pid	pid_target	process	target process
4552	4056	WerFault.exe	EF4D.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:

a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe

pid	process
1832	a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe
1832	a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe
2644
2644
2644
2644
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2644
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2644
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2644
2644
2644
2644
2644
2644
2644
2644
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2644
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2644
2644
2644
2644

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2644
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe

pid process

1832 a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

description pid process

Token: SeShutdownPrivilege 2644
Token: SeCreatePagefilePrivilege 2644

pid	process
2644

description	pid	process
Token: SeShutdownPrivilege	2644
Token: SeCreatePagefilePrivilege	2644

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

description	pid	target process
PID 2644 wrote to memory of 4056	2644	EF4D.exe
PID 2644 wrote to memory of 4056	2644	EF4D.exe
PID 2644 wrote to memory of 4056	2644	EF4D.exe

C:\Users\Admin\AppData\Local\Temp\a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe
"C:\Users\Admin\AppData\Local\Temp\a10ae4664c0ca545e23219fb56fccf6c5cfb2d1aacad5af66cd183deb4606988.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1832

C:\Users\Admin\AppData\Local\Temp\EF4D.exe
C:\Users\Admin\AppData\Local\Temp\EF4D.exe
1⤵
- Executes dropped EXE
PID:4056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4056 -s 436
2⤵
- Program crash
PID:4552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4056 -ip 4056
1⤵
PID:3144

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

C:\Users\Admin\AppData\Local\Temp\EF4D.exe
Filesize
1.0MB

MD5
fc78f5650188734808f725d0934650a1

SHA1
e5184b4aa5de2d1121572fbfd3c2f05bf2b9a000

SHA256
319ead10ec14192ea1ba28c3079e72a581bbdbb13a67a3ccbe3066dfec86179a

SHA512
d74f0f7e0fb32d3ac0ef09fdd6762032044bb48ca298ee68e9e7cfd327db812bff460efe89495778febddeb5fdb3d8aa3d6c1f61d1aff34dcaa0a2bf07f2f3f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\EF4D.exe
Filesize
1.0MB

MD5
fc78f5650188734808f725d0934650a1

SHA1
e5184b4aa5de2d1121572fbfd3c2f05bf2b9a000

SHA256
319ead10ec14192ea1ba28c3079e72a581bbdbb13a67a3ccbe3066dfec86179a

SHA512
d74f0f7e0fb32d3ac0ef09fdd6762032044bb48ca298ee68e9e7cfd327db812bff460efe89495778febddeb5fdb3d8aa3d6c1f61d1aff34dcaa0a2bf07f2f3f0

Download Submit
memory/1832-132-0x000000000088E000-0x000000000089F000-memory.dmp

Filesize
68KB

Download
memory/1832-133-0x0000000002390000-0x0000000002399000-memory.dmp

Filesize
36KB

Download
memory/1832-134-0x000000000088E000-0x000000000089F000-memory.dmp

Filesize
68KB

Download
memory/1832-135-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/1832-136-0x000000000088E000-0x000000000089F000-memory.dmp

Filesize
68KB

Download
memory/1832-137-0x0000000002390000-0x0000000002399000-memory.dmp

Filesize
36KB

Download
memory/1832-138-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/4056-139-0x0000000000000000-mapping.dmp

Download