smokeloader | bf5deb42e439e5fc1e2117994bdb6483ebc724fabfeebede12293a325a91cfc7

Analysis

max time kernel
150s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/01/2023, 11:19

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General

Target

file.exe
Size

311KB
MD5

d7d7655f0a47063ef00c99486713406f
SHA1

954da0c4e4a7e463e85d8d62a201d7be000c56bf
SHA256

bf5deb42e439e5fc1e2117994bdb6483ebc724fabfeebede12293a325a91cfc7
SHA512

bbddc0a41697d999554f0a2a6743dcbf92ffb690a7ecfa785e3421bf3eaa86c27a4fef9e1ebabcf8b453bf19416d5b3db478ab2216900c11b690da34767e11ee
SSDEEP

3072:I4XMVLjlJ75ks54DTm4XUJaZmztZdHNfS6NeGEpHTp+dPOK5twsR9wVCaSzdeO:RULjnOhHdiEmzbpNfS+dWKQNor

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 6 IoCs

resource	yara_rule
behavioral2/memory/2268-133-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/2220-135-0x0000000002C40000-0x0000000002C49000-memory.dmp	family_smokeloader
behavioral2/memory/2268-136-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/2268-137-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/3924-144-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/3924-145-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader

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

Executes dropped EXE 2 IoCs

pid	Process
1276	wtdjgva
3924	wtdjgva

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2220 set thread context of 2268	2220	file.exe	80
PID 1276 set thread context of 3924	1276	wtdjgva	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	wtdjgva
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	wtdjgva
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	wtdjgva

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2268	file.exe
2268	file.exe
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found
700	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
700	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2268	file.exe
3924	wtdjgva

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	700	Process not Found
Token: SeCreatePagefilePrivilege	700	Process not Found

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2268	2220	file.exe	80
PID 2220 wrote to memory of 2268	2220	file.exe	80
PID 2220 wrote to memory of 2268	2220	file.exe	80
PID 2220 wrote to memory of 2268	2220	file.exe	80
PID 2220 wrote to memory of 2268	2220	file.exe	80
PID 2220 wrote to memory of 2268	2220	file.exe	80
PID 1276 wrote to memory of 3924	1276	wtdjgva	89
PID 1276 wrote to memory of 3924	1276	wtdjgva	89
PID 1276 wrote to memory of 3924	1276	wtdjgva	89
PID 1276 wrote to memory of 3924	1276	wtdjgva	89
PID 1276 wrote to memory of 3924	1276	wtdjgva	89
PID 1276 wrote to memory of 3924	1276	wtdjgva	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:2220
- 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:2268

C:\Users\Admin\AppData\Roaming\wtdjgva
C:\Users\Admin\AppData\Roaming\wtdjgva
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1276
- C:\Users\Admin\AppData\Roaming\wtdjgva
  C:\Users\Admin\AppData\Roaming\wtdjgva
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:3924

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\wtdjgva

Filesize
311KB

MD5
d7d7655f0a47063ef00c99486713406f

SHA1
954da0c4e4a7e463e85d8d62a201d7be000c56bf

SHA256
bf5deb42e439e5fc1e2117994bdb6483ebc724fabfeebede12293a325a91cfc7

SHA512
bbddc0a41697d999554f0a2a6743dcbf92ffb690a7ecfa785e3421bf3eaa86c27a4fef9e1ebabcf8b453bf19416d5b3db478ab2216900c11b690da34767e11ee

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

Filesize
311KB

MD5
d7d7655f0a47063ef00c99486713406f

SHA1
954da0c4e4a7e463e85d8d62a201d7be000c56bf

SHA256
bf5deb42e439e5fc1e2117994bdb6483ebc724fabfeebede12293a325a91cfc7

SHA512
bbddc0a41697d999554f0a2a6743dcbf92ffb690a7ecfa785e3421bf3eaa86c27a4fef9e1ebabcf8b453bf19416d5b3db478ab2216900c11b690da34767e11ee

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

Filesize
311KB

MD5
d7d7655f0a47063ef00c99486713406f

SHA1
954da0c4e4a7e463e85d8d62a201d7be000c56bf

SHA256
bf5deb42e439e5fc1e2117994bdb6483ebc724fabfeebede12293a325a91cfc7

SHA512
bbddc0a41697d999554f0a2a6743dcbf92ffb690a7ecfa785e3421bf3eaa86c27a4fef9e1ebabcf8b453bf19416d5b3db478ab2216900c11b690da34767e11ee

Download Submit
memory/1276-143-0x0000000002D77000-0x0000000002D8C000-memory.dmp

Filesize
84KB

Download
memory/2220-135-0x0000000002C40000-0x0000000002C49000-memory.dmp

Filesize
36KB

Download
memory/2220-134-0x0000000002C67000-0x0000000002C7C000-memory.dmp

Filesize
84KB

Download
memory/2268-136-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2268-137-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2268-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3924-144-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3924-145-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download