smokeloader | cc5581a7e54f55b4b84718906d49662340f8f1b2d58a11c4c525e795a2605bb0

Analysis

max time kernel
150s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
20/12/2022, 14:38

Sharing

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General

Target

file.exe
Size

213KB
MD5

7e79f54b49539f900db591d5c07af6c5
SHA1

cf62c293e4206073c7a18caff58ff15fd812e14e
SHA256

cc5581a7e54f55b4b84718906d49662340f8f1b2d58a11c4c525e795a2605bb0
SHA512

f4b8292b1baddd0aa45e515a5cee42d608c8227cc13683a42b280810eaff3f9e7aca55bdf1a020e921ca29f3bed7c812ef39f7eac524b4f1cdd59c8c6b2d58b6
SSDEEP

3072:xzLxv7RW6U+4H1spBnL7bWa8L57b/jgeLMFNHCDml:9Lx4waWnjWplbpSCa

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 6 IoCs

resource	yara_rule
behavioral2/memory/1620-133-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/4440-135-0x00000000005B0000-0x00000000005B9000-memory.dmp	family_smokeloader
behavioral2/memory/1620-136-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/1620-137-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/2036-169-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/2036-170-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader

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

Executes dropped EXE 2 IoCs

pid	Process
2832	dvacaib
2036	dvacaib

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4440 set thread context of 1620	4440	file.exe	81
PID 2832 set thread context of 2036	2832	dvacaib	90

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	dvacaib
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	dvacaib
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	dvacaib
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

pid	Process
1620	file.exe
1620	file.exe
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found
388	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
388	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1620	file.exe
2036	dvacaib

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeShutdownPrivilege	388	Process not Found
Token: SeCreatePagefilePrivilege	388	Process not Found
Token: SeShutdownPrivilege	388	Process not Found
Token: SeCreatePagefilePrivilege	388	Process not Found
Token: SeShutdownPrivilege	388	Process not Found
Token: SeCreatePagefilePrivilege	388	Process not Found
Token: SeShutdownPrivilege	388	Process not Found
Token: SeCreatePagefilePrivilege	388	Process not Found
Token: SeShutdownPrivilege	388	Process not Found
Token: SeCreatePagefilePrivilege	388	Process not Found

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4440 wrote to memory of 1620	4440	file.exe	81
PID 4440 wrote to memory of 1620	4440	file.exe	81
PID 4440 wrote to memory of 1620	4440	file.exe	81
PID 4440 wrote to memory of 1620	4440	file.exe	81
PID 4440 wrote to memory of 1620	4440	file.exe	81
PID 4440 wrote to memory of 1620	4440	file.exe	81
PID 2832 wrote to memory of 2036	2832	dvacaib	90
PID 2832 wrote to memory of 2036	2832	dvacaib	90
PID 2832 wrote to memory of 2036	2832	dvacaib	90
PID 2832 wrote to memory of 2036	2832	dvacaib	90
PID 2832 wrote to memory of 2036	2832	dvacaib	90
PID 2832 wrote to memory of 2036	2832	dvacaib	90

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:4440
- 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:1620

C:\Users\Admin\AppData\Roaming\dvacaib
C:\Users\Admin\AppData\Roaming\dvacaib
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2832
- C:\Users\Admin\AppData\Roaming\dvacaib
  C:\Users\Admin\AppData\Roaming\dvacaib
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:2036

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\dvacaib

Filesize
213KB

MD5
7e79f54b49539f900db591d5c07af6c5

SHA1
cf62c293e4206073c7a18caff58ff15fd812e14e

SHA256
cc5581a7e54f55b4b84718906d49662340f8f1b2d58a11c4c525e795a2605bb0

SHA512
f4b8292b1baddd0aa45e515a5cee42d608c8227cc13683a42b280810eaff3f9e7aca55bdf1a020e921ca29f3bed7c812ef39f7eac524b4f1cdd59c8c6b2d58b6

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

Filesize
213KB

MD5
7e79f54b49539f900db591d5c07af6c5

SHA1
cf62c293e4206073c7a18caff58ff15fd812e14e

SHA256
cc5581a7e54f55b4b84718906d49662340f8f1b2d58a11c4c525e795a2605bb0

SHA512
f4b8292b1baddd0aa45e515a5cee42d608c8227cc13683a42b280810eaff3f9e7aca55bdf1a020e921ca29f3bed7c812ef39f7eac524b4f1cdd59c8c6b2d58b6

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

Filesize
213KB

MD5
7e79f54b49539f900db591d5c07af6c5

SHA1
cf62c293e4206073c7a18caff58ff15fd812e14e

SHA256
cc5581a7e54f55b4b84718906d49662340f8f1b2d58a11c4c525e795a2605bb0

SHA512
f4b8292b1baddd0aa45e515a5cee42d608c8227cc13683a42b280810eaff3f9e7aca55bdf1a020e921ca29f3bed7c812ef39f7eac524b4f1cdd59c8c6b2d58b6

Download Submit
memory/388-148-0x00000000022A0000-0x00000000022B0000-memory.dmp

Filesize
64KB

Download
memory/388-139-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-197-0x0000000002560000-0x0000000002570000-memory.dmp

Filesize
64KB

Download
memory/388-138-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-195-0x0000000002560000-0x0000000002570000-memory.dmp

Filesize
64KB

Download
memory/388-140-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-141-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-142-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-143-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-144-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-145-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-146-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-196-0x0000000002560000-0x0000000002570000-memory.dmp

Filesize
64KB

Download
memory/388-150-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-152-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-151-0x0000000002560000-0x0000000002570000-memory.dmp

Filesize
64KB

Download
memory/388-147-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-154-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-155-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-156-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-157-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-158-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-159-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-160-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-161-0x0000000002560000-0x0000000002570000-memory.dmp

Filesize
64KB

Download
memory/388-162-0x0000000002560000-0x0000000002570000-memory.dmp

Filesize
64KB

Download
memory/388-194-0x00000000022B0000-0x00000000022C0000-memory.dmp

Filesize
64KB

Download
memory/388-193-0x0000000002560000-0x0000000002570000-memory.dmp

Filesize
64KB

Download
memory/388-192-0x0000000002560000-0x0000000002570000-memory.dmp

Filesize
64KB

Download
memory/388-177-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-191-0x0000000002560000-0x0000000002570000-memory.dmp

Filesize
64KB

Download
memory/388-190-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-189-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-171-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-172-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-173-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-174-0x00000000022B0000-0x00000000022C0000-memory.dmp

Filesize
64KB

Download
memory/388-175-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-176-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-188-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-178-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-179-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-180-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-181-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-182-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-183-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-184-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-185-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-186-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/388-187-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/1620-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1620-136-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1620-137-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2036-170-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2036-169-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2832-168-0x0000000000718000-0x0000000000728000-memory.dmp

Filesize
64KB

Download
memory/4440-134-0x0000000000619000-0x000000000062A000-memory.dmp

Filesize
68KB

Download
memory/4440-135-0x00000000005B0000-0x00000000005B9000-memory.dmp

Filesize
36KB

Download