smokeloader | da66fedd7831c720e47597fda2295ebcb868479b9c21bc86646c523b99e3233c

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
10-10-2023 20:02

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General

Target

file.exe
Size

427KB
MD5

6c1581c681ae8cd6f6b09f159aed7219
SHA1

2918809f6da16e5111a24ff91dc9bb358faaac8a
SHA256

da66fedd7831c720e47597fda2295ebcb868479b9c21bc86646c523b99e3233c
SHA512

984dd12a724222176748c70bd052a0595726f720cf8dd6bd381e8415c4579af4254166417b86b2ed97890c9625060006433e1337fe973ae793407522632d018b
SSDEEP

6144:KIy+bnr+Np0yN90QEMmIOqxxJEJYz1XeuqLVMpbgrcWFNb1vFRQAy6WQ:IMrFy90ZINXOg0VLVMFWc8NbnRXlWQ

Score

10^/10

smokeloader backdoor persistence trojan

Malware Config

Extracted

Family

smokeloader

Version

2022

http://77.91.68.29/fks/

rc4.i32

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
2228	v7002600.exe
2144	a4248824.exe

Loads dropped DLL 9 IoCs

pid	Process
2288	file.exe
2228	v7002600.exe
2228	v7002600.exe
2228	v7002600.exe
2144	a4248824.exe
2976	WerFault.exe
2976	WerFault.exe
2976	WerFault.exe
2976	WerFault.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup1 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP001.TMP\\\""	v7002600.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	file.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2144 set thread context of 2784	2144	a4248824.exe	32

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2976	2144	WerFault.exe	29

Checks SCSI registry key(s) 3 TTPs 3 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	AppLaunch.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AppLaunch.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AppLaunch.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2784	AppLaunch.exe
2784	AppLaunch.exe
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found
1192	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1192	Process not Found

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2784	AppLaunch.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 2228	2288	file.exe	28
PID 2288 wrote to memory of 2228	2288	file.exe	28
PID 2288 wrote to memory of 2228	2288	file.exe	28
PID 2288 wrote to memory of 2228	2288	file.exe	28
PID 2288 wrote to memory of 2228	2288	file.exe	28
PID 2288 wrote to memory of 2228	2288	file.exe	28
PID 2288 wrote to memory of 2228	2288	file.exe	28
PID 2228 wrote to memory of 2144	2228	v7002600.exe	29
PID 2228 wrote to memory of 2144	2228	v7002600.exe	29
PID 2228 wrote to memory of 2144	2228	v7002600.exe	29
PID 2228 wrote to memory of 2144	2228	v7002600.exe	29
PID 2228 wrote to memory of 2144	2228	v7002600.exe	29
PID 2228 wrote to memory of 2144	2228	v7002600.exe	29
PID 2228 wrote to memory of 2144	2228	v7002600.exe	29
PID 2144 wrote to memory of 2724	2144	a4248824.exe	31
PID 2144 wrote to memory of 2724	2144	a4248824.exe	31
PID 2144 wrote to memory of 2724	2144	a4248824.exe	31
PID 2144 wrote to memory of 2724	2144	a4248824.exe	31
PID 2144 wrote to memory of 2724	2144	a4248824.exe	31
PID 2144 wrote to memory of 2724	2144	a4248824.exe	31
PID 2144 wrote to memory of 2724	2144	a4248824.exe	31
PID 2144 wrote to memory of 2784	2144	a4248824.exe	32
PID 2144 wrote to memory of 2784	2144	a4248824.exe	32
PID 2144 wrote to memory of 2784	2144	a4248824.exe	32
PID 2144 wrote to memory of 2784	2144	a4248824.exe	32
PID 2144 wrote to memory of 2784	2144	a4248824.exe	32
PID 2144 wrote to memory of 2784	2144	a4248824.exe	32
PID 2144 wrote to memory of 2784	2144	a4248824.exe	32
PID 2144 wrote to memory of 2784	2144	a4248824.exe	32
PID 2144 wrote to memory of 2784	2144	a4248824.exe	32
PID 2144 wrote to memory of 2784	2144	a4248824.exe	32
PID 2144 wrote to memory of 2976	2144	a4248824.exe	33
PID 2144 wrote to memory of 2976	2144	a4248824.exe	33
PID 2144 wrote to memory of 2976	2144	a4248824.exe	33
PID 2144 wrote to memory of 2976	2144	a4248824.exe	33
PID 2144 wrote to memory of 2976	2144	a4248824.exe	33
PID 2144 wrote to memory of 2976	2144	a4248824.exe	33
PID 2144 wrote to memory of 2976	2144	a4248824.exe	33

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\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2288
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\v7002600.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\v7002600.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2228
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2144
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:2724
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      Checks SCSI registry key(s)
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      PID:2784
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 276
      4⤵
      Loads dropped DLL
      Program crash
      PID:2976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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\Local\Temp\IXP000.TMP\v7002600.exe

Filesize
325KB

MD5
d54e8d7604a377a7365eb2a9938e5bb3

SHA1
4b8b2b99a9686aaafe0573274abd942d39dd9a2b

SHA256
20beb8fbb0bfad1b4e83c8963f8faa13a0ae6c1cc9c2abc88784ed0dd4639be8

SHA512
8bf8aafc8d390d8759b64119921367e8f4a0fae6b88c5d08ba38a6b6eed14bd53c501d412b5afe2b66f9774f7020c3d4d1ca38130f13748314c0ee19cc132884

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\v7002600.exe

Filesize
325KB

MD5
d54e8d7604a377a7365eb2a9938e5bb3

SHA1
4b8b2b99a9686aaafe0573274abd942d39dd9a2b

SHA256
20beb8fbb0bfad1b4e83c8963f8faa13a0ae6c1cc9c2abc88784ed0dd4639be8

SHA512
8bf8aafc8d390d8759b64119921367e8f4a0fae6b88c5d08ba38a6b6eed14bd53c501d412b5afe2b66f9774f7020c3d4d1ca38130f13748314c0ee19cc132884

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe

Filesize
166KB

MD5
9609b09ea71e8b93a28952593162aa93

SHA1
e1398b8d3cd91362d17488098858528d348a35e5

SHA256
d5063fedba3cd823ad9a1564da01554e540234f5d79435ef0f752c6029c490d1

SHA512
c688e5b24eb1add31b61fd605eefd67db66ab4bf7a9a77cd1d1d1fec3923459ace509aa22efe60d4a1723d663b52780a2b5737653538dcbc1353b388b6888c80

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe

Filesize
166KB

MD5
9609b09ea71e8b93a28952593162aa93

SHA1
e1398b8d3cd91362d17488098858528d348a35e5

SHA256
d5063fedba3cd823ad9a1564da01554e540234f5d79435ef0f752c6029c490d1

SHA512
c688e5b24eb1add31b61fd605eefd67db66ab4bf7a9a77cd1d1d1fec3923459ace509aa22efe60d4a1723d663b52780a2b5737653538dcbc1353b388b6888c80

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe

Filesize
166KB

MD5
9609b09ea71e8b93a28952593162aa93

SHA1
e1398b8d3cd91362d17488098858528d348a35e5

SHA256
d5063fedba3cd823ad9a1564da01554e540234f5d79435ef0f752c6029c490d1

SHA512
c688e5b24eb1add31b61fd605eefd67db66ab4bf7a9a77cd1d1d1fec3923459ace509aa22efe60d4a1723d663b52780a2b5737653538dcbc1353b388b6888c80

Download Submit
\Users\Admin\AppData\Local\Temp\IXP000.TMP\v7002600.exe

Filesize
325KB

MD5
d54e8d7604a377a7365eb2a9938e5bb3

SHA1
4b8b2b99a9686aaafe0573274abd942d39dd9a2b

SHA256
20beb8fbb0bfad1b4e83c8963f8faa13a0ae6c1cc9c2abc88784ed0dd4639be8

SHA512
8bf8aafc8d390d8759b64119921367e8f4a0fae6b88c5d08ba38a6b6eed14bd53c501d412b5afe2b66f9774f7020c3d4d1ca38130f13748314c0ee19cc132884

Download Submit
\Users\Admin\AppData\Local\Temp\IXP000.TMP\v7002600.exe

Filesize
325KB

MD5
d54e8d7604a377a7365eb2a9938e5bb3

SHA1
4b8b2b99a9686aaafe0573274abd942d39dd9a2b

SHA256
20beb8fbb0bfad1b4e83c8963f8faa13a0ae6c1cc9c2abc88784ed0dd4639be8

SHA512
8bf8aafc8d390d8759b64119921367e8f4a0fae6b88c5d08ba38a6b6eed14bd53c501d412b5afe2b66f9774f7020c3d4d1ca38130f13748314c0ee19cc132884

Download Submit
\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe

Filesize
166KB

MD5
9609b09ea71e8b93a28952593162aa93

SHA1
e1398b8d3cd91362d17488098858528d348a35e5

SHA256
d5063fedba3cd823ad9a1564da01554e540234f5d79435ef0f752c6029c490d1

SHA512
c688e5b24eb1add31b61fd605eefd67db66ab4bf7a9a77cd1d1d1fec3923459ace509aa22efe60d4a1723d663b52780a2b5737653538dcbc1353b388b6888c80

Download Submit
\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe

Filesize
166KB

MD5
9609b09ea71e8b93a28952593162aa93

SHA1
e1398b8d3cd91362d17488098858528d348a35e5

SHA256
d5063fedba3cd823ad9a1564da01554e540234f5d79435ef0f752c6029c490d1

SHA512
c688e5b24eb1add31b61fd605eefd67db66ab4bf7a9a77cd1d1d1fec3923459ace509aa22efe60d4a1723d663b52780a2b5737653538dcbc1353b388b6888c80

Download Submit
\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe

Filesize
166KB

MD5
9609b09ea71e8b93a28952593162aa93

SHA1
e1398b8d3cd91362d17488098858528d348a35e5

SHA256
d5063fedba3cd823ad9a1564da01554e540234f5d79435ef0f752c6029c490d1

SHA512
c688e5b24eb1add31b61fd605eefd67db66ab4bf7a9a77cd1d1d1fec3923459ace509aa22efe60d4a1723d663b52780a2b5737653538dcbc1353b388b6888c80

Download Submit
\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe

Filesize
166KB

MD5
9609b09ea71e8b93a28952593162aa93

SHA1
e1398b8d3cd91362d17488098858528d348a35e5

SHA256
d5063fedba3cd823ad9a1564da01554e540234f5d79435ef0f752c6029c490d1

SHA512
c688e5b24eb1add31b61fd605eefd67db66ab4bf7a9a77cd1d1d1fec3923459ace509aa22efe60d4a1723d663b52780a2b5737653538dcbc1353b388b6888c80

Download Submit
\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe

Filesize
166KB

MD5
9609b09ea71e8b93a28952593162aa93

SHA1
e1398b8d3cd91362d17488098858528d348a35e5

SHA256
d5063fedba3cd823ad9a1564da01554e540234f5d79435ef0f752c6029c490d1

SHA512
c688e5b24eb1add31b61fd605eefd67db66ab4bf7a9a77cd1d1d1fec3923459ace509aa22efe60d4a1723d663b52780a2b5737653538dcbc1353b388b6888c80

Download Submit
\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe

Filesize
166KB

MD5
9609b09ea71e8b93a28952593162aa93

SHA1
e1398b8d3cd91362d17488098858528d348a35e5

SHA256
d5063fedba3cd823ad9a1564da01554e540234f5d79435ef0f752c6029c490d1

SHA512
c688e5b24eb1add31b61fd605eefd67db66ab4bf7a9a77cd1d1d1fec3923459ace509aa22efe60d4a1723d663b52780a2b5737653538dcbc1353b388b6888c80

Download Submit
\Users\Admin\AppData\Local\Temp\IXP001.TMP\a4248824.exe

Filesize
166KB

MD5
9609b09ea71e8b93a28952593162aa93

SHA1
e1398b8d3cd91362d17488098858528d348a35e5

SHA256
d5063fedba3cd823ad9a1564da01554e540234f5d79435ef0f752c6029c490d1

SHA512
c688e5b24eb1add31b61fd605eefd67db66ab4bf7a9a77cd1d1d1fec3923459ace509aa22efe60d4a1723d663b52780a2b5737653538dcbc1353b388b6888c80

Download Submit
memory/1192-32-0x0000000002AE0000-0x0000000002AF6000-memory.dmp

Filesize
88KB

Download
memory/2784-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2784-27-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2784-25-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2784-24-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2784-23-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2784-33-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download