smokeloader | aed178c142086be0416975e80515ee2301cb8ad9e6f6f852b199fa142bba51bc

Analysis

max time kernel
94s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-11-2024 16:57

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General

Target

caspol.exe
Size

85KB
MD5

349b01d00e67f73554971a7059dc44a1
SHA1

45e5bc1a2f1fb80c4b0002f88e854efe77ac7d2a
SHA256

aed178c142086be0416975e80515ee2301cb8ad9e6f6f852b199fa142bba51bc
SHA512

98eab765f9c38b27d31516ffa7eaa945a94db27ef31a6e94ec63ccc94664d58cdd8082a3b7bb09dcd483fa8b16fc9c4b123b3256cd0c93809994ddeec782129b
SSDEEP

1536:Mv12CLp7WB+RdtK4QjXvqu51mbgIxIS4yEqlQ8A9Qvvrdo:E2ug2gIxIS0O09Qho

Score

10^/10

smokeloader backdoor discovery trojan

Malware Config

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Smokeloader family
smokeloader
Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

Processes:

caspol.exe

description pid process target process

PID 2540 created 3488 2540 caspol.exe Explorer.EXE
Suspicious use of SetThreadContext 1 IoCs

Processes:

caspol.exe

description pid process target process

PID 2540 set thread context of 3220 2540 caspol.exe InstallUtil.exe
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
discovery

System Language Discovery
T1614.001

Processes:

caspol.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language caspol.exe

description	pid	process	target process
PID 2540 created 3488	2540	caspol.exe	Explorer.EXE

description	pid	process	target process
PID 2540 set thread context of 3220	2540	caspol.exe	InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	caspol.exe

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

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	InstallUtil.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	InstallUtil.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

caspol.exe

pid process

2540 caspol.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

caspol.exe

description pid process

Token: SeDebugPrivilege 2540 caspol.exe
Token: SeDebugPrivilege 2540 caspol.exe

pid	process
2540	caspol.exe

description	pid	process
Token: SeDebugPrivilege	2540	caspol.exe
Token: SeDebugPrivilege	2540	caspol.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

caspol.exe

description	pid	process	target process
PID 2540 wrote to memory of 3220	2540	caspol.exe	InstallUtil.exe
PID 2540 wrote to memory of 3220	2540	caspol.exe	InstallUtil.exe
PID 2540 wrote to memory of 3220	2540	caspol.exe	InstallUtil.exe
PID 2540 wrote to memory of 3220	2540	caspol.exe	InstallUtil.exe
PID 2540 wrote to memory of 3220	2540	caspol.exe	InstallUtil.exe
PID 2540 wrote to memory of 3220	2540	caspol.exe	InstallUtil.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3488
- C:\Users\Admin\AppData\Local\Temp\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\caspol.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2540
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - Checks SCSI registry key(s)
  PID:3220

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2540-0-0x000000007467E000-0x000000007467F000-memory.dmp

Filesize
4KB

Download
memory/2540-1-0x0000000000690000-0x00000000006AA000-memory.dmp

Filesize
104KB

Download
memory/2540-2-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download
memory/2540-3-0x000000007467E000-0x000000007467F000-memory.dmp

Filesize
4KB

Download
memory/2540-4-0x0000000006460000-0x000000000654E000-memory.dmp

Filesize
952KB

Download
memory/2540-5-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download
memory/2540-6-0x0000000006B20000-0x00000000070C4000-memory.dmp

Filesize
5.6MB

Download
memory/2540-7-0x0000000006670000-0x0000000006702000-memory.dmp

Filesize
584KB

Download
memory/2540-51-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-49-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-59-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-57-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-71-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-69-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-67-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-65-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-63-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-61-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-55-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-53-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-47-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-45-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-43-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-41-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-39-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-37-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-31-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-29-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-28-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-21-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-19-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-17-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-15-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-13-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-35-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-33-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-25-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-23-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-11-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-9-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-8-0x0000000006460000-0x0000000006547000-memory.dmp

Filesize
924KB

Download
memory/2540-1158-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download
memory/2540-1159-0x0000000006780000-0x00000000067DC000-memory.dmp

Filesize
368KB

Download
memory/2540-1160-0x00000000055F0000-0x000000000563C000-memory.dmp

Filesize
304KB

Download
memory/2540-1161-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download
memory/2540-1162-0x0000000006830000-0x0000000006884000-memory.dmp

Filesize
336KB

Download
memory/2540-1166-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download
memory/2540-1170-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download
memory/2540-1168-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download
memory/2540-1171-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download
memory/3220-1172-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download