smokeloader | ff4ca465d6f26292f71028d0d0a9f78234a74af966067adc7153ba7aa81e6136

Analysis

max time kernel
150s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
13-01-2023 07:19

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General

Target

file.exe
Size

283KB
MD5

7edb3bf162fff8c303399ed7ad6a359c
SHA1

fbe48adcbd7581ff7682c95f45dfb6a7d92b3153
SHA256

ff4ca465d6f26292f71028d0d0a9f78234a74af966067adc7153ba7aa81e6136
SHA512

00c21c294770286f8697744c1753d7e4bdca3d3e761cce3f5ed825d1b0a63d5cf73dd2b5878da73a8ad872952e08c2333a307107feff68c8e36c50b42ad2aa14
SSDEEP

6144:VTBLDH4xl6wtAUvsZhj9Rn3vuZzxEmXCgyGpK3:VTBHH4x7tAUvsZR9R3mZznSC

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 6 IoCs

resource	yara_rule
behavioral2/memory/2004-133-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/2352-135-0x0000000002180000-0x0000000002189000-memory.dmp	family_smokeloader
behavioral2/memory/2004-136-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/2004-137-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/3756-144-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/3756-145-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader

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

Executes dropped EXE 2 IoCs

pid	Process
3564	fieihbc
3756	fieihbc

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2352 set thread context of 2004	2352	file.exe	80
PID 3564 set thread context of 3756	3564	fieihbc	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	fieihbc
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	fieihbc
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	fieihbc

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2004	file.exe
2004	file.exe
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found
600	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
600	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2004	file.exe
3756	fieihbc

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	600	Process not Found
Token: SeCreatePagefilePrivilege	600	Process not Found

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 2004	2352	file.exe	80
PID 2352 wrote to memory of 2004	2352	file.exe	80
PID 2352 wrote to memory of 2004	2352	file.exe	80
PID 2352 wrote to memory of 2004	2352	file.exe	80
PID 2352 wrote to memory of 2004	2352	file.exe	80
PID 2352 wrote to memory of 2004	2352	file.exe	80
PID 3564 wrote to memory of 3756	3564	fieihbc	89
PID 3564 wrote to memory of 3756	3564	fieihbc	89
PID 3564 wrote to memory of 3756	3564	fieihbc	89
PID 3564 wrote to memory of 3756	3564	fieihbc	89
PID 3564 wrote to memory of 3756	3564	fieihbc	89
PID 3564 wrote to memory of 3756	3564	fieihbc	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:2352
- 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:2004

C:\Users\Admin\AppData\Roaming\fieihbc
C:\Users\Admin\AppData\Roaming\fieihbc
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3564
- C:\Users\Admin\AppData\Roaming\fieihbc
  C:\Users\Admin\AppData\Roaming\fieihbc
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:3756

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

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Downloads

C:\Users\Admin\AppData\Roaming\fieihbc

Filesize
283KB

MD5
7edb3bf162fff8c303399ed7ad6a359c

SHA1
fbe48adcbd7581ff7682c95f45dfb6a7d92b3153

SHA256
ff4ca465d6f26292f71028d0d0a9f78234a74af966067adc7153ba7aa81e6136

SHA512
00c21c294770286f8697744c1753d7e4bdca3d3e761cce3f5ed825d1b0a63d5cf73dd2b5878da73a8ad872952e08c2333a307107feff68c8e36c50b42ad2aa14

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

Filesize
283KB

MD5
7edb3bf162fff8c303399ed7ad6a359c

SHA1
fbe48adcbd7581ff7682c95f45dfb6a7d92b3153

SHA256
ff4ca465d6f26292f71028d0d0a9f78234a74af966067adc7153ba7aa81e6136

SHA512
00c21c294770286f8697744c1753d7e4bdca3d3e761cce3f5ed825d1b0a63d5cf73dd2b5878da73a8ad872952e08c2333a307107feff68c8e36c50b42ad2aa14

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

Filesize
283KB

MD5
7edb3bf162fff8c303399ed7ad6a359c

SHA1
fbe48adcbd7581ff7682c95f45dfb6a7d92b3153

SHA256
ff4ca465d6f26292f71028d0d0a9f78234a74af966067adc7153ba7aa81e6136

SHA512
00c21c294770286f8697744c1753d7e4bdca3d3e761cce3f5ed825d1b0a63d5cf73dd2b5878da73a8ad872952e08c2333a307107feff68c8e36c50b42ad2aa14

Download Submit
memory/2004-136-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2004-137-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2004-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2352-135-0x0000000002180000-0x0000000002189000-memory.dmp

Filesize
36KB

Download
memory/2352-134-0x00000000004FE000-0x0000000000513000-memory.dmp

Filesize
84KB

Download
memory/3564-143-0x000000000061F000-0x0000000000635000-memory.dmp

Filesize
88KB

Download
memory/3756-144-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3756-145-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download