smokeloader | 56efcacfde1c2964e3d83156e99dbc29bfbcf8a2382c614472b08fa01a62c76f

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
16/02/2023, 00:09

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General

Target

file.exe
Size

205KB
MD5

05bc99ce9688cc06dea5e76c432aa9eb
SHA1

5624f3ce3de8c6532a1128cd93933c6e6cd3e367
SHA256

56efcacfde1c2964e3d83156e99dbc29bfbcf8a2382c614472b08fa01a62c76f
SHA512

3e5fd7e61aeb1c41645dfcfb9c76177702c0cdd693b288dab3252b15c975e0625c218147c7efc721d2a70b347c0d02e999232e25f1ac66e5c1e0eb2fd3410c7a
SSDEEP

3072:jUodx9cVqP3sH2d9ZC9QMzV+X7mpuei1vTmrh9Ax672sPaaaahT2M:j9dAUc2fcyMzccmdm7AxO

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 6 IoCs

resource	yara_rule
behavioral2/memory/5004-133-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/4728-135-0x00000000008C0000-0x00000000008C9000-memory.dmp	family_smokeloader
behavioral2/memory/5004-136-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/5004-137-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/824-144-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/824-145-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader

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

Executes dropped EXE 2 IoCs

pid	Process
2348	fascweb
824	fascweb

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4728 set thread context of 5004	4728	file.exe	82
PID 2348 set thread context of 824	2348	fascweb	91

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
5004	file.exe
5004	file.exe
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found
740	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
740	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
5004	file.exe
824	fascweb

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	740	Process not Found
Token: SeCreatePagefilePrivilege	740	Process not Found

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 5004	4728	file.exe	82
PID 4728 wrote to memory of 5004	4728	file.exe	82
PID 4728 wrote to memory of 5004	4728	file.exe	82
PID 4728 wrote to memory of 5004	4728	file.exe	82
PID 4728 wrote to memory of 5004	4728	file.exe	82
PID 4728 wrote to memory of 5004	4728	file.exe	82
PID 2348 wrote to memory of 824	2348	fascweb	91
PID 2348 wrote to memory of 824	2348	fascweb	91
PID 2348 wrote to memory of 824	2348	fascweb	91
PID 2348 wrote to memory of 824	2348	fascweb	91
PID 2348 wrote to memory of 824	2348	fascweb	91
PID 2348 wrote to memory of 824	2348	fascweb	91

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:4728
- 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:5004

C:\Users\Admin\AppData\Roaming\fascweb
C:\Users\Admin\AppData\Roaming\fascweb
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Users\Admin\AppData\Roaming\fascweb
  C:\Users\Admin\AppData\Roaming\fascweb
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:824

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\fascweb

Filesize
205KB

MD5
05bc99ce9688cc06dea5e76c432aa9eb

SHA1
5624f3ce3de8c6532a1128cd93933c6e6cd3e367

SHA256
56efcacfde1c2964e3d83156e99dbc29bfbcf8a2382c614472b08fa01a62c76f

SHA512
3e5fd7e61aeb1c41645dfcfb9c76177702c0cdd693b288dab3252b15c975e0625c218147c7efc721d2a70b347c0d02e999232e25f1ac66e5c1e0eb2fd3410c7a

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

Filesize
205KB

MD5
05bc99ce9688cc06dea5e76c432aa9eb

SHA1
5624f3ce3de8c6532a1128cd93933c6e6cd3e367

SHA256
56efcacfde1c2964e3d83156e99dbc29bfbcf8a2382c614472b08fa01a62c76f

SHA512
3e5fd7e61aeb1c41645dfcfb9c76177702c0cdd693b288dab3252b15c975e0625c218147c7efc721d2a70b347c0d02e999232e25f1ac66e5c1e0eb2fd3410c7a

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

Filesize
205KB

MD5
05bc99ce9688cc06dea5e76c432aa9eb

SHA1
5624f3ce3de8c6532a1128cd93933c6e6cd3e367

SHA256
56efcacfde1c2964e3d83156e99dbc29bfbcf8a2382c614472b08fa01a62c76f

SHA512
3e5fd7e61aeb1c41645dfcfb9c76177702c0cdd693b288dab3252b15c975e0625c218147c7efc721d2a70b347c0d02e999232e25f1ac66e5c1e0eb2fd3410c7a

Download Submit
memory/824-144-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/824-145-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2348-143-0x000000000076F000-0x0000000000782000-memory.dmp

Filesize
76KB

Download
memory/4728-135-0x00000000008C0000-0x00000000008C9000-memory.dmp

Filesize
36KB

Download
memory/4728-134-0x000000000091F000-0x0000000000932000-memory.dmp

Filesize
76KB

Download
memory/5004-136-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/5004-137-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/5004-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download