smokeloader | d5202e8a72bb3eb70009068ff5d84a9babc1d99ce62f8d402db1d70903b972cd

Analysis

max time kernel
150s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
13-03-2023 10:18

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General

Target

f05bcbf9f67403c92d4f0ce94d8d43c9.exe
Size

565KB
MD5

f05bcbf9f67403c92d4f0ce94d8d43c9
SHA1

605cca854081d0c4db27835491ccda829cb47021
SHA256

d5202e8a72bb3eb70009068ff5d84a9babc1d99ce62f8d402db1d70903b972cd
SHA512

07193810e2f9df8ee4486b65ffb490788597bf27eedd6a130ab0afdb1b7d01dcdbb421c25aa8ffc46a45a8050a16d9ec3ada03eb92b5b06d8c021f6111958c3c
SSDEEP

12288:+foBOouaGxki2nRgV4YENsNAcAgRVL8v3Hh:+AM+n04Yms1AiL0

Score

10^/10

smokeloader swo backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

swo

Extracted

Family

smokeloader

Version

2020

http://akmedia.in/js/k/index.php

http://bethesdaserukam.org/setting/k/index.php

http://stemschools.in/js/k/index.php

http://dejarestaurant.com/wp-admin/js/k/index.php

http://moabscript.ir/wp-admin/js/k/index.php

http://nicehybridseeds.com/image/catalog/k/index.php

http://imaker.io/picktail/js/k/index.php

http://nanavatisworld.com/assets/js/k/index.php

http://smartbubox.com/img/k/index.php

http://krigenpharmaceuticals.com/js/k/index.php

rc4.i32

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
3740	djacfve
428	djacfve

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1456 set thread context of 2176	1456	f05bcbf9f67403c92d4f0ce94d8d43c9.exe	92
PID 3740 set thread context of 428	3740	djacfve	110

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1996	5004	WerFault.exe	96

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	f05bcbf9f67403c92d4f0ce94d8d43c9.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	f05bcbf9f67403c92d4f0ce94d8d43c9.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	f05bcbf9f67403c92d4f0ce94d8d43c9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	djacfve
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	djacfve
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	djacfve

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Process not Found
Key created	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Process not Found

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2176	f05bcbf9f67403c92d4f0ce94d8d43c9.exe
2176	f05bcbf9f67403c92d4f0ce94d8d43c9.exe
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2524	Process not Found

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2176	f05bcbf9f67403c92d4f0ce94d8d43c9.exe
2524	Process not Found
2524	Process not Found
2524	Process not Found
2524	Process not Found
428	djacfve

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2524	Process not Found
Token: SeCreatePagefilePrivilege	2524	Process not Found
Token: SeShutdownPrivilege	2524	Process not Found
Token: SeCreatePagefilePrivilege	2524	Process not Found
Token: SeShutdownPrivilege	2524	Process not Found
Token: SeCreatePagefilePrivilege	2524	Process not Found

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2524	Process not Found
2524	Process not Found

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 2176	1456	f05bcbf9f67403c92d4f0ce94d8d43c9.exe	92
PID 1456 wrote to memory of 2176	1456	f05bcbf9f67403c92d4f0ce94d8d43c9.exe	92
PID 1456 wrote to memory of 2176	1456	f05bcbf9f67403c92d4f0ce94d8d43c9.exe	92
PID 1456 wrote to memory of 2176	1456	f05bcbf9f67403c92d4f0ce94d8d43c9.exe	92
PID 1456 wrote to memory of 2176	1456	f05bcbf9f67403c92d4f0ce94d8d43c9.exe	92
PID 1456 wrote to memory of 2176	1456	f05bcbf9f67403c92d4f0ce94d8d43c9.exe	92
PID 2524 wrote to memory of 5004	2524	Process not Found	96
PID 2524 wrote to memory of 5004	2524	Process not Found	96
PID 2524 wrote to memory of 5004	2524	Process not Found	96
PID 2524 wrote to memory of 5004	2524	Process not Found	96
PID 2524 wrote to memory of 3348	2524	Process not Found	99
PID 2524 wrote to memory of 3348	2524	Process not Found	99
PID 2524 wrote to memory of 3348	2524	Process not Found	99
PID 3740 wrote to memory of 428	3740	djacfve	110
PID 3740 wrote to memory of 428	3740	djacfve	110
PID 3740 wrote to memory of 428	3740	djacfve	110
PID 3740 wrote to memory of 428	3740	djacfve	110
PID 3740 wrote to memory of 428	3740	djacfve	110
PID 3740 wrote to memory of 428	3740	djacfve	110

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\f05bcbf9f67403c92d4f0ce94d8d43c9.exe
"C:\Users\Admin\AppData\Local\Temp\f05bcbf9f67403c92d4f0ce94d8d43c9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1456
- C:\Users\Admin\AppData\Local\Temp\f05bcbf9f67403c92d4f0ce94d8d43c9.exe
  "{path}"
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:2176

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:5004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5004 -s 872
  2⤵
  - Program crash
  PID:1996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5004 -ip 5004
1⤵
PID:3756

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:3348

C:\Users\Admin\AppData\Roaming\djacfve
C:\Users\Admin\AppData\Roaming\djacfve
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3740
- C:\Users\Admin\AppData\Roaming\djacfve
  "{path}"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:428

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\djacfve

Filesize
565KB

MD5
f05bcbf9f67403c92d4f0ce94d8d43c9

SHA1
605cca854081d0c4db27835491ccda829cb47021

SHA256
d5202e8a72bb3eb70009068ff5d84a9babc1d99ce62f8d402db1d70903b972cd

SHA512
07193810e2f9df8ee4486b65ffb490788597bf27eedd6a130ab0afdb1b7d01dcdbb421c25aa8ffc46a45a8050a16d9ec3ada03eb92b5b06d8c021f6111958c3c

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

Filesize
565KB

MD5
f05bcbf9f67403c92d4f0ce94d8d43c9

SHA1
605cca854081d0c4db27835491ccda829cb47021

SHA256
d5202e8a72bb3eb70009068ff5d84a9babc1d99ce62f8d402db1d70903b972cd

SHA512
07193810e2f9df8ee4486b65ffb490788597bf27eedd6a130ab0afdb1b7d01dcdbb421c25aa8ffc46a45a8050a16d9ec3ada03eb92b5b06d8c021f6111958c3c

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

Filesize
565KB

MD5
f05bcbf9f67403c92d4f0ce94d8d43c9

SHA1
605cca854081d0c4db27835491ccda829cb47021

SHA256
d5202e8a72bb3eb70009068ff5d84a9babc1d99ce62f8d402db1d70903b972cd

SHA512
07193810e2f9df8ee4486b65ffb490788597bf27eedd6a130ab0afdb1b7d01dcdbb421c25aa8ffc46a45a8050a16d9ec3ada03eb92b5b06d8c021f6111958c3c

Download Submit
memory/428-170-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/428-166-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1456-139-0x00000000058F0000-0x0000000005900000-memory.dmp

Filesize
64KB

Download
memory/1456-138-0x0000000005710000-0x000000000571A000-memory.dmp

Filesize
40KB

Download
memory/1456-134-0x0000000005CC0000-0x0000000006264000-memory.dmp

Filesize
5.6MB

Download
memory/1456-135-0x0000000005650000-0x00000000056E2000-memory.dmp

Filesize
584KB

Download
memory/1456-136-0x00000000057B0000-0x000000000584C000-memory.dmp

Filesize
624KB

Download
memory/1456-133-0x0000000000D70000-0x0000000000E04000-memory.dmp

Filesize
592KB

Download
memory/1456-137-0x00000000058F0000-0x0000000005900000-memory.dmp

Filesize
64KB

Download
memory/2176-144-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2176-142-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2176-140-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2524-143-0x0000000002E50000-0x0000000002E66000-memory.dmp

Filesize
88KB

Download
memory/2524-167-0x0000000007620000-0x0000000007636000-memory.dmp

Filesize
88KB

Download
memory/3348-157-0x0000000000DA0000-0x0000000000DAC000-memory.dmp

Filesize
48KB

Download
memory/3348-158-0x0000000000DA0000-0x0000000000DAC000-memory.dmp

Filesize
48KB

Download
memory/3740-162-0x0000000005820000-0x0000000005830000-memory.dmp

Filesize
64KB

Download
memory/5004-156-0x00000000006C0000-0x000000000072B000-memory.dmp

Filesize
428KB

Download
memory/5004-159-0x00000000006C0000-0x000000000072B000-memory.dmp

Filesize
428KB

Download
memory/5004-155-0x0000000000730000-0x00000000007A4000-memory.dmp

Filesize
464KB

Download
memory/5004-154-0x00000000006C0000-0x000000000072B000-memory.dmp

Filesize
428KB

Download