smokeloader | dfd82ea53bb1196fc2e079063358063b524142778c754259045e4541c60d7c1d

Analysis

max time kernel
151s
max time network
122s
platform
windows7_x64
resource
win7-en-20211208
submitted
08/03/2022, 22:15

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General

Target
l0ad.exe
Size 2.1MB
Sample220308-158pfaechk
SHA256 dfd82ea53bb1196fc2e079063358063b524142778c754259045e4541c60d7c1d
MD5 f2f3ca70d49e2709c7a49141ea1ba57c
SHA1 aad2f371705b10a26d6fa1c9e7672bbffa8c0c54
SHA512 f30d2cb57a292a0d6ceb3e0fe42fcef50007bf99e2ed09cbb077e0954ad66d791b779043db847598307e7d8ba919c8dbf9594560ad661d32f105cfbd019a6bcc
MD5 SHA1 SHA512

Score

10^/10

smokeloader backdoor evasion trojan

Malware Config

Extracted

Family

smokeloader

Version

2020

http://2.56.59.26/

rc4.i32

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	l0ad.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	l0ad.exe

Deletes itself 1 IoCs

pid	Process
1416	Process not Found

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	l0ad.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1660	l0ad.exe
1660	l0ad.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	l0ad.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	l0ad.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	l0ad.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1660	l0ad.exe
1660	l0ad.exe
1660	l0ad.exe
1660	l0ad.exe
1416	Process not Found
1416	Process not Found
1416	Process not Found
1416	Process not Found
1416	Process not Found
1416	Process not Found
1416	Process not Found
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1416	Process not Found
1416	Process not Found
1416	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1416	Process not Found

Suspicious behavior: MapViewOfSection 19 IoCs

pid	Process
1660	l0ad.exe
1416	Process not Found
1416	Process not Found
1416	Process not Found
1416	Process not Found
1416	Process not Found
1416	Process not Found
1416	Process not Found
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1416	Process not Found
1416	Process not Found
1416	Process not Found
1416	Process not Found

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1416	Process not Found
1416	Process not Found

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1416	Process not Found
1416	Process not Found

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 1416 wrote to memory of 1364	1416	Process not Found	27
PID 1416 wrote to memory of 1364	1416	Process not Found	27
PID 1416 wrote to memory of 1364	1416	Process not Found	27
PID 1416 wrote to memory of 1364	1416	Process not Found	27
PID 1416 wrote to memory of 1364	1416	Process not Found	27
PID 1416 wrote to memory of 1276	1416	Process not Found	28
PID 1416 wrote to memory of 1276	1416	Process not Found	28
PID 1416 wrote to memory of 1276	1416	Process not Found	28
PID 1416 wrote to memory of 1276	1416	Process not Found	28
PID 1416 wrote to memory of 1096	1416	Process not Found	29
PID 1416 wrote to memory of 1096	1416	Process not Found	29
PID 1416 wrote to memory of 1096	1416	Process not Found	29
PID 1416 wrote to memory of 1096	1416	Process not Found	29
PID 1416 wrote to memory of 1096	1416	Process not Found	29
PID 1416 wrote to memory of 740	1416	Process not Found	30
PID 1416 wrote to memory of 740	1416	Process not Found	30
PID 1416 wrote to memory of 740	1416	Process not Found	30
PID 1416 wrote to memory of 740	1416	Process not Found	30
PID 1416 wrote to memory of 1084	1416	Process not Found	31
PID 1416 wrote to memory of 1084	1416	Process not Found	31
PID 1416 wrote to memory of 1084	1416	Process not Found	31
PID 1416 wrote to memory of 1084	1416	Process not Found	31
PID 1416 wrote to memory of 1084	1416	Process not Found	31
PID 1416 wrote to memory of 832	1416	Process not Found	32
PID 1416 wrote to memory of 832	1416	Process not Found	32
PID 1416 wrote to memory of 832	1416	Process not Found	32
PID 1416 wrote to memory of 832	1416	Process not Found	32
PID 1416 wrote to memory of 832	1416	Process not Found	32
PID 1416 wrote to memory of 1588	1416	Process not Found	33
PID 1416 wrote to memory of 1588	1416	Process not Found	33
PID 1416 wrote to memory of 1588	1416	Process not Found	33
PID 1416 wrote to memory of 1588	1416	Process not Found	33
PID 1416 wrote to memory of 1588	1416	Process not Found	33
PID 1416 wrote to memory of 1128	1416	Process not Found	34
PID 1416 wrote to memory of 1128	1416	Process not Found	34
PID 1416 wrote to memory of 1128	1416	Process not Found	34
PID 1416 wrote to memory of 1128	1416	Process not Found	34
PID 1416 wrote to memory of 860	1416	Process not Found	35
PID 1416 wrote to memory of 860	1416	Process not Found	35
PID 1416 wrote to memory of 860	1416	Process not Found	35
PID 1416 wrote to memory of 860	1416	Process not Found	35
PID 1416 wrote to memory of 860	1416	Process not Found	35

C:\Users\Admin\AppData\Local\Temp\l0ad.exe
"C:\Users\Admin\AppData\Local\Temp\l0ad.exe"
1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1660

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:1364

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:1276

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:1096

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:740

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:1084

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:832

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:1588

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:1128

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:860

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/740-83-0x0000000000060000-0x000000000006C000-memory.dmp

Download

memory/740-82-0x0000000000070000-0x0000000000076000-memory.dmp

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memory/832-90-0x0000000000090000-0x0000000000095000-memory.dmp

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memory/832-91-0x0000000000080000-0x0000000000089000-memory.dmp

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memory/860-100-0x0000000000090000-0x0000000000098000-memory.dmp

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memory/860-101-0x0000000000080000-0x000000000008B000-memory.dmp

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memory/1084-87-0x0000000000080000-0x00000000000A7000-memory.dmp

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memory/1084-86-0x00000000000B0000-0x00000000000D2000-memory.dmp

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memory/1096-81-0x0000000000080000-0x0000000000089000-memory.dmp

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memory/1096-80-0x0000000000090000-0x0000000000095000-memory.dmp

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memory/1128-97-0x0000000000060000-0x000000000006D000-memory.dmp

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memory/1128-96-0x0000000000070000-0x0000000000077000-memory.dmp

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memory/1276-76-0x0000000000070000-0x0000000000079000-memory.dmp

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memory/1276-77-0x0000000000060000-0x000000000006F000-memory.dmp

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memory/1364-73-0x0000000074CC1000-0x0000000074CC3000-memory.dmp

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memory/1364-74-0x0000000000090000-0x0000000000097000-memory.dmp

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memory/1364-75-0x0000000000080000-0x000000000008B000-memory.dmp

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memory/1416-71-0x00000000029C0000-0x00000000029D6000-memory.dmp

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memory/1588-95-0x00000000000C0000-0x00000000000CB000-memory.dmp

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memory/1588-94-0x0000000000110000-0x0000000000116000-memory.dmp

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memory/1660-70-0x0000000000180000-0x0000000000181000-memory.dmp

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memory/1660-61-0x0000000000400000-0x0000000000935000-memory.dmp

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memory/1660-67-0x0000000000400000-0x0000000000935000-memory.dmp

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memory/1660-65-0x0000000000400000-0x0000000000935000-memory.dmp

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memory/1660-64-0x0000000000400000-0x0000000000935000-memory.dmp

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memory/1660-63-0x0000000000400000-0x0000000000935000-memory.dmp

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memory/1660-62-0x0000000077610000-0x0000000077790000-memory.dmp

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memory/1660-68-0x0000000000400000-0x0000000000935000-memory.dmp

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memory/1660-60-0x0000000000220000-0x0000000000260000-memory.dmp

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memory/1660-69-0x0000000000400000-0x0000000000935000-memory.dmp

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memory/1660-55-0x0000000075F81000-0x0000000075F83000-memory.dmp

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memory/1660-58-0x0000000000400000-0x0000000000935000-memory.dmp

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memory/1660-59-0x0000000000170000-0x0000000000171000-memory.dmp

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memory/1660-56-0x0000000000400000-0x0000000000935000-memory.dmp

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memory/1660-57-0x0000000000400000-0x0000000000935000-memory.dmp

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