smokeloader | 748aa5ee3f5e51911bfd0bbaf90c9ea41be3aa272749f205dfe7d2a972e874d7

Analysis

max time kernel
150s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2023, 13:59

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General

Target

file.exe
Size

191KB
MD5

08ae52f0e8fc87fe61b0750f79fbcff2
SHA1

cba4d327d56cf2599156d163dcd4e8ad73c1f4f6
SHA256

748aa5ee3f5e51911bfd0bbaf90c9ea41be3aa272749f205dfe7d2a972e874d7
SHA512

157ef4eea2d704f3845c2edb085c004d95013d8d8dc8009deb6ec566563d239c4fb0bb84824651c6c97339bebe401a1c15a49f7fa92c102c084ddc81bbf821ea
SSDEEP

3072:qVlr+HY0wH0XLRr9sBgWV55ucjlEMmYD+acunpD+9G0KQZlV:qVliHlLR5UgRY0iFQ

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 6 IoCs

resource	yara_rule
behavioral2/memory/3236-133-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/1116-135-0x00000000005E0000-0x00000000005E9000-memory.dmp	family_smokeloader
behavioral2/memory/3236-136-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/3236-137-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/4348-144-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/4348-145-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

Executes dropped EXE 2 IoCs

pid	Process
4812	thbaebe
4348	thbaebe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1116 set thread context of 3236	1116	file.exe	80
PID 4812 set thread context of 4348	4812	thbaebe	89

Checks SCSI registry key(s) 3 TTPs 6 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	file.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	file.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	thbaebe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	thbaebe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	thbaebe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3236	file.exe
3236	file.exe
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found
2616	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2616	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
3236	file.exe
4348	thbaebe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2616	Process not Found
Token: SeCreatePagefilePrivilege	2616	Process not Found

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 3236	1116	file.exe	80
PID 1116 wrote to memory of 3236	1116	file.exe	80
PID 1116 wrote to memory of 3236	1116	file.exe	80
PID 1116 wrote to memory of 3236	1116	file.exe	80
PID 1116 wrote to memory of 3236	1116	file.exe	80
PID 1116 wrote to memory of 3236	1116	file.exe	80
PID 4812 wrote to memory of 4348	4812	thbaebe	89
PID 4812 wrote to memory of 4348	4812	thbaebe	89
PID 4812 wrote to memory of 4348	4812	thbaebe	89
PID 4812 wrote to memory of 4348	4812	thbaebe	89
PID 4812 wrote to memory of 4348	4812	thbaebe	89
PID 4812 wrote to memory of 4348	4812	thbaebe	89

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:1116
- 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:3236

C:\Users\Admin\AppData\Roaming\thbaebe
C:\Users\Admin\AppData\Roaming\thbaebe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4812
- C:\Users\Admin\AppData\Roaming\thbaebe
  C:\Users\Admin\AppData\Roaming\thbaebe
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:4348

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\thbaebe

Filesize
191KB

MD5
08ae52f0e8fc87fe61b0750f79fbcff2

SHA1
cba4d327d56cf2599156d163dcd4e8ad73c1f4f6

SHA256
748aa5ee3f5e51911bfd0bbaf90c9ea41be3aa272749f205dfe7d2a972e874d7

SHA512
157ef4eea2d704f3845c2edb085c004d95013d8d8dc8009deb6ec566563d239c4fb0bb84824651c6c97339bebe401a1c15a49f7fa92c102c084ddc81bbf821ea

Download Submit
C:\Users\Admin\AppData\Roaming\thbaebe

Filesize
191KB

MD5
08ae52f0e8fc87fe61b0750f79fbcff2

SHA1
cba4d327d56cf2599156d163dcd4e8ad73c1f4f6

SHA256
748aa5ee3f5e51911bfd0bbaf90c9ea41be3aa272749f205dfe7d2a972e874d7

SHA512
157ef4eea2d704f3845c2edb085c004d95013d8d8dc8009deb6ec566563d239c4fb0bb84824651c6c97339bebe401a1c15a49f7fa92c102c084ddc81bbf821ea

Download Submit
C:\Users\Admin\AppData\Roaming\thbaebe

Filesize
191KB

MD5
08ae52f0e8fc87fe61b0750f79fbcff2

SHA1
cba4d327d56cf2599156d163dcd4e8ad73c1f4f6

SHA256
748aa5ee3f5e51911bfd0bbaf90c9ea41be3aa272749f205dfe7d2a972e874d7

SHA512
157ef4eea2d704f3845c2edb085c004d95013d8d8dc8009deb6ec566563d239c4fb0bb84824651c6c97339bebe401a1c15a49f7fa92c102c084ddc81bbf821ea

Download Submit
memory/1116-135-0x00000000005E0000-0x00000000005E9000-memory.dmp

Filesize
36KB

Download
memory/1116-134-0x0000000000709000-0x000000000071C000-memory.dmp

Filesize
76KB

Download
memory/3236-136-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3236-137-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3236-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4348-144-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4348-145-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4812-143-0x0000000000598000-0x00000000005AB000-memory.dmp

Filesize
76KB

Download