smokeloader | 8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5

Analysis

max time kernel
150s
max time network
148s
platform
windows10-1703_x64
resource
win10-20220901-en
resource tags

arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
submitted
31/01/2023, 17:48

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General

Target

8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe
Size

297KB
MD5

c6f4d7972d271013dd2588644330d0bf
SHA1

e8d1cd3b32942f269d931ab54549cdacc20169af
SHA256

8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5
SHA512

856d91cc688c6e85b3fa4a508bd87ee5827b816d3accebc5e0bc280aa6ce02a402d92239e1cda9b8c36d4019dfb4db4de6f4debae8843da496bf9e3a80969641
SSDEEP

3072:E5ubJmLBdRAfCJ0O65BoibDMuNn6Os0vk6gVx/atmqPUx6WfQz86vE3MMo:dbJmLB0fIdkBgDytmqMoIWE8M

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 8 IoCs

resource	yara_rule
behavioral1/memory/328-147-0x0000000002180000-0x0000000002189000-memory.dmp	family_smokeloader
behavioral1/memory/3080-151-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/3080-152-0x0000000000402DD8-mapping.dmp	family_smokeloader
behavioral1/memory/3080-162-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/3080-183-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/4860-215-0x0000000000402DD8-mapping.dmp	family_smokeloader
behavioral1/memory/4860-247-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/4860-248-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader

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

Executes dropped EXE 2 IoCs

pid	Process
3980	bvjrhwg
4860	bvjrhwg

Deletes itself 1 IoCs

pid	Process
2952	Process not Found

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 328 set thread context of 3080	328	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe	66
PID 3980 set thread context of 4860	3980	bvjrhwg	68

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 queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	bvjrhwg
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	bvjrhwg
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	bvjrhwg
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3080	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe
3080	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
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2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found
2952	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2952	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
3080	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe
4860	bvjrhwg

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2952	Process not Found
Token: SeCreatePagefilePrivilege	2952	Process not Found

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 328 wrote to memory of 3080	328	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe	66
PID 328 wrote to memory of 3080	328	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe	66
PID 328 wrote to memory of 3080	328	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe	66
PID 328 wrote to memory of 3080	328	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe	66
PID 328 wrote to memory of 3080	328	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe	66
PID 328 wrote to memory of 3080	328	8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe	66
PID 3980 wrote to memory of 4860	3980	bvjrhwg	68
PID 3980 wrote to memory of 4860	3980	bvjrhwg	68
PID 3980 wrote to memory of 4860	3980	bvjrhwg	68
PID 3980 wrote to memory of 4860	3980	bvjrhwg	68
PID 3980 wrote to memory of 4860	3980	bvjrhwg	68
PID 3980 wrote to memory of 4860	3980	bvjrhwg	68

C:\Users\Admin\AppData\Local\Temp\8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe
"C:\Users\Admin\AppData\Local\Temp\8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:328
- C:\Users\Admin\AppData\Local\Temp\8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe
  "C:\Users\Admin\AppData\Local\Temp\8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5.exe"
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:3080

C:\Users\Admin\AppData\Roaming\bvjrhwg
C:\Users\Admin\AppData\Roaming\bvjrhwg
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Users\Admin\AppData\Roaming\bvjrhwg
  C:\Users\Admin\AppData\Roaming\bvjrhwg
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:4860

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\bvjrhwg

Filesize
297KB

MD5
c6f4d7972d271013dd2588644330d0bf

SHA1
e8d1cd3b32942f269d931ab54549cdacc20169af

SHA256
8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5

SHA512
856d91cc688c6e85b3fa4a508bd87ee5827b816d3accebc5e0bc280aa6ce02a402d92239e1cda9b8c36d4019dfb4db4de6f4debae8843da496bf9e3a80969641

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

Filesize
297KB

MD5
c6f4d7972d271013dd2588644330d0bf

SHA1
e8d1cd3b32942f269d931ab54549cdacc20169af

SHA256
8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5

SHA512
856d91cc688c6e85b3fa4a508bd87ee5827b816d3accebc5e0bc280aa6ce02a402d92239e1cda9b8c36d4019dfb4db4de6f4debae8843da496bf9e3a80969641

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

Filesize
297KB

MD5
c6f4d7972d271013dd2588644330d0bf

SHA1
e8d1cd3b32942f269d931ab54549cdacc20169af

SHA256
8b4e8c2d8b4e9876d6e4dcea91200191b45e9240dc630dca1501263c206811d5

SHA512
856d91cc688c6e85b3fa4a508bd87ee5827b816d3accebc5e0bc280aa6ce02a402d92239e1cda9b8c36d4019dfb4db4de6f4debae8843da496bf9e3a80969641

Download Submit
memory/328-120-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-121-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-122-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-123-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-124-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-125-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-126-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-127-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-128-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-129-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-130-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-131-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-132-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-133-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-134-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-135-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-136-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-137-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-138-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-139-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-140-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-142-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-143-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-144-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-146-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-145-0x0000000000590000-0x00000000006DA000-memory.dmp

Filesize
1.3MB

Download
memory/328-147-0x0000000002180000-0x0000000002189000-memory.dmp

Filesize
36KB

Download
memory/328-148-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-149-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/328-150-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-151-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3080-153-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-154-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-155-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-156-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-157-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-158-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-159-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-160-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-162-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3080-161-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-163-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-164-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-165-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-166-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-167-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-168-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-169-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-170-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-171-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-173-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-172-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-174-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-175-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-176-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-177-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-178-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-179-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-180-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-182-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-181-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3080-183-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3980-185-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3980-186-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3980-187-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3980-188-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3980-189-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3980-190-0x0000000077460000-0x00000000775EE000-memory.dmp

Filesize
1.6MB

Download
memory/3980-222-0x000000000073A000-0x0000000000750000-memory.dmp

Filesize
88KB

Download
memory/4860-247-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4860-248-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download