smokeloader | ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731

Analysis

max time kernel
150s
max time network
147s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
18/10/2022, 14:39

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General

Target

ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe
Size

197KB
MD5

f9576d1cdb7ee25d5a2ceb8e82b963f4
SHA1

0f34f84778607141712851868626dec957da6306
SHA256

ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731
SHA512

fe1ab6baee890d66a4bf451a3f2f5c306e83845c9d81c16d0cc705a0644c1f7f73068c0dbd189b6f24c7cabe73e3803223e74f20554dae9777c3da34f7ca7098
SSDEEP

3072:0XSzufLii+CC5j/O1Ey8wCb7lfx4IR7LR/BKtL0K2VAH6rk:wyufLXLAmf+7pxV7LFC0BVAHL

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 8 IoCs

resource	yara_rule
behavioral1/memory/2716-144-0x00000000005B0000-0x00000000005B9000-memory.dmp	family_smokeloader
behavioral1/memory/4788-145-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/4788-146-0x0000000000402DD8-mapping.dmp	family_smokeloader
behavioral1/memory/4788-158-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/4788-178-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/4396-209-0x0000000000402DD8-mapping.dmp	family_smokeloader
behavioral1/memory/4396-241-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/4396-242-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader

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

Executes dropped EXE 2 IoCs

pid	Process
4772	udtrbaf
4396	udtrbaf

Deletes itself 1 IoCs

pid	Process
1736	Process not Found

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2716 set thread context of 4788	2716	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe	66
PID 4772 set thread context of 4396	4772	udtrbaf	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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	udtrbaf
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	udtrbaf
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	udtrbaf

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4788	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe
4788	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe
1736	Process not Found
1736	Process not Found
1736	Process not Found
1736	Process not Found
1736	Process not Found
1736	Process not Found
1736	Process not Found
1736	Process not Found
1736	Process not Found
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1736	Process not Found
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1736	Process not Found
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1736	Process not Found
1736	Process not Found
1736	Process not Found
1736	Process not Found
1736	Process not Found
1736	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1736	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
4788	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe
4396	udtrbaf

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1736	Process not Found
Token: SeCreatePagefilePrivilege	1736	Process not Found

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 4788	2716	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe	66
PID 2716 wrote to memory of 4788	2716	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe	66
PID 2716 wrote to memory of 4788	2716	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe	66
PID 2716 wrote to memory of 4788	2716	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe	66
PID 2716 wrote to memory of 4788	2716	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe	66
PID 2716 wrote to memory of 4788	2716	ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe	66
PID 4772 wrote to memory of 4396	4772	udtrbaf	68
PID 4772 wrote to memory of 4396	4772	udtrbaf	68
PID 4772 wrote to memory of 4396	4772	udtrbaf	68
PID 4772 wrote to memory of 4396	4772	udtrbaf	68
PID 4772 wrote to memory of 4396	4772	udtrbaf	68
PID 4772 wrote to memory of 4396	4772	udtrbaf	68

C:\Users\Admin\AppData\Local\Temp\ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe
"C:\Users\Admin\AppData\Local\Temp\ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Users\Admin\AppData\Local\Temp\ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe
  "C:\Users\Admin\AppData\Local\Temp\ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731.exe"
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:4788

C:\Users\Admin\AppData\Roaming\udtrbaf
C:\Users\Admin\AppData\Roaming\udtrbaf
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Users\Admin\AppData\Roaming\udtrbaf
  C:\Users\Admin\AppData\Roaming\udtrbaf
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:4396

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\udtrbaf

Filesize
197KB

MD5
f9576d1cdb7ee25d5a2ceb8e82b963f4

SHA1
0f34f84778607141712851868626dec957da6306

SHA256
ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731

SHA512
fe1ab6baee890d66a4bf451a3f2f5c306e83845c9d81c16d0cc705a0644c1f7f73068c0dbd189b6f24c7cabe73e3803223e74f20554dae9777c3da34f7ca7098

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

Filesize
197KB

MD5
f9576d1cdb7ee25d5a2ceb8e82b963f4

SHA1
0f34f84778607141712851868626dec957da6306

SHA256
ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731

SHA512
fe1ab6baee890d66a4bf451a3f2f5c306e83845c9d81c16d0cc705a0644c1f7f73068c0dbd189b6f24c7cabe73e3803223e74f20554dae9777c3da34f7ca7098

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

Filesize
197KB

MD5
f9576d1cdb7ee25d5a2ceb8e82b963f4

SHA1
0f34f84778607141712851868626dec957da6306

SHA256
ba4e96637214455b7a9df148f365b47630d09dfe2bb8257b924b2a6535dfc731

SHA512
fe1ab6baee890d66a4bf451a3f2f5c306e83845c9d81c16d0cc705a0644c1f7f73068c0dbd189b6f24c7cabe73e3803223e74f20554dae9777c3da34f7ca7098

Download Submit
memory/2716-137-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-139-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-120-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-121-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-122-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-123-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-124-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-125-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-127-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-126-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-128-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-129-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-130-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-131-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-132-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-133-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-134-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-135-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-136-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-116-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-119-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-140-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-138-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-141-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-142-0x0000000000696000-0x00000000006A7000-memory.dmp

Filesize
68KB

Download
memory/2716-143-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-144-0x00000000005B0000-0x00000000005B9000-memory.dmp

Filesize
36KB

Download
memory/2716-147-0x0000000000696000-0x00000000006A7000-memory.dmp

Filesize
68KB

Download
memory/2716-117-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/2716-118-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4396-242-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4396-241-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4772-182-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4772-218-0x0000000000736000-0x0000000000747000-memory.dmp

Filesize
68KB

Download
memory/4772-181-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4772-180-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4772-183-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4772-186-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4772-185-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4772-184-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-150-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-157-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-158-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4788-159-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-160-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-161-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-162-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-163-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-164-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-165-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-166-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-167-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-168-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-169-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-170-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-171-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-172-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-173-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-174-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-156-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-155-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-154-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-153-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-152-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-151-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-149-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-148-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-145-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4788-175-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-176-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-177-0x0000000077A60000-0x0000000077BEE000-memory.dmp

Filesize
1.6MB

Download
memory/4788-178-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download