smokeloader | 73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606

Analysis

max time kernel
300s
max time network
124s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
20/07/2023, 03:37

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General

Target

73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe
Size

248KB
MD5

932d72dbb9e47863813fde96f1b80bcc
SHA1

f945ba7966a0fa0f006850b76252c8bc8e13d83e
SHA256

73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606
SHA512

150b8fc8ba92d008dd80d1328947dec6fb7df09d02eac43e84bd66f0b4f5035d094838ac8f73cdae33ddb7d9a87b9336bef8d3499842ca71e68f60daf0df5dd6
SSDEEP

3072:t6dPRwnF4nmpagIKt+H11uEld44gNW6o25q0vMQU5:tI5wnF4nmpeKt8uqvgNW6oQq0

Score

10^/10

smokeloader up3 backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

up3

Extracted

Family

smokeloader

Version

2020

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32

Signatures

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

Deletes itself 1 IoCs

pid	Process
1176	Process not Found

Executes dropped EXE 2 IoCs

pid	Process
308	fwjrdai
2808	fwjrdai

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2040 set thread context of 2404	2040	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe	28
PID 308 set thread context of 2808	308	fwjrdai	33

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 queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	fwjrdai
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	fwjrdai
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	fwjrdai
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2404	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe
2404	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found
1176	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1176	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2404	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe
2808	fwjrdai

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1176	Process not Found

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 2404	2040	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe	28
PID 2040 wrote to memory of 2404	2040	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe	28
PID 2040 wrote to memory of 2404	2040	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe	28
PID 2040 wrote to memory of 2404	2040	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe	28
PID 2040 wrote to memory of 2404	2040	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe	28
PID 2040 wrote to memory of 2404	2040	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe	28
PID 2040 wrote to memory of 2404	2040	73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe	28
PID 2240 wrote to memory of 308	2240	taskeng.exe	32
PID 2240 wrote to memory of 308	2240	taskeng.exe	32
PID 2240 wrote to memory of 308	2240	taskeng.exe	32
PID 2240 wrote to memory of 308	2240	taskeng.exe	32
PID 308 wrote to memory of 2808	308	fwjrdai	33
PID 308 wrote to memory of 2808	308	fwjrdai	33
PID 308 wrote to memory of 2808	308	fwjrdai	33
PID 308 wrote to memory of 2808	308	fwjrdai	33
PID 308 wrote to memory of 2808	308	fwjrdai	33
PID 308 wrote to memory of 2808	308	fwjrdai	33
PID 308 wrote to memory of 2808	308	fwjrdai	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\73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe
"C:\Users\Admin\AppData\Local\Temp\73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe
  "C:\Users\Admin\AppData\Local\Temp\73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe"
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:2404

C:\Windows\system32\taskeng.exe
taskeng.exe {913D7B3C-F438-4205-82E0-73F10BC71D4E} S-1-5-21-2969888527-3102471180-2307688834-1000:YKQDESCX\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Roaming\fwjrdai
  C:\Users\Admin\AppData\Roaming\fwjrdai
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:308
- - C:\Users\Admin\AppData\Roaming\fwjrdai
    C:\Users\Admin\AppData\Roaming\fwjrdai
    3⤵
    - Executes dropped EXE
    - Checks SCSI registry key(s)
    - Suspicious behavior: MapViewOfSection
    PID:2808

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\fwjrdai

Filesize
248KB

MD5
932d72dbb9e47863813fde96f1b80bcc

SHA1
f945ba7966a0fa0f006850b76252c8bc8e13d83e

SHA256
73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606

SHA512
150b8fc8ba92d008dd80d1328947dec6fb7df09d02eac43e84bd66f0b4f5035d094838ac8f73cdae33ddb7d9a87b9336bef8d3499842ca71e68f60daf0df5dd6

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

Filesize
248KB

MD5
932d72dbb9e47863813fde96f1b80bcc

SHA1
f945ba7966a0fa0f006850b76252c8bc8e13d83e

SHA256
73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606

SHA512
150b8fc8ba92d008dd80d1328947dec6fb7df09d02eac43e84bd66f0b4f5035d094838ac8f73cdae33ddb7d9a87b9336bef8d3499842ca71e68f60daf0df5dd6

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

Filesize
248KB

MD5
932d72dbb9e47863813fde96f1b80bcc

SHA1
f945ba7966a0fa0f006850b76252c8bc8e13d83e

SHA256
73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606

SHA512
150b8fc8ba92d008dd80d1328947dec6fb7df09d02eac43e84bd66f0b4f5035d094838ac8f73cdae33ddb7d9a87b9336bef8d3499842ca71e68f60daf0df5dd6

Download Submit
memory/308-77-0x0000000002CF0000-0x0000000002DF0000-memory.dmp

Filesize
1024KB

Download
memory/1176-70-0x000007FEF5CB0000-0x000007FEF5DF3000-memory.dmp

Filesize
1.3MB

Download
memory/1176-71-0x000007FE7BB80000-0x000007FE7BB8A000-memory.dmp

Filesize
40KB

Download
memory/1176-62-0x0000000002A50000-0x0000000002A66000-memory.dmp

Filesize
88KB

Download
memory/1176-82-0x0000000002BE0000-0x0000000002BF6000-memory.dmp

Filesize
88KB

Download
memory/1176-72-0x000007FEF5CB0000-0x000007FEF5DF3000-memory.dmp

Filesize
1.3MB

Download
memory/2040-56-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/2040-55-0x0000000002C00000-0x0000000002D00000-memory.dmp

Filesize
1024KB

Download
memory/2404-60-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2404-59-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2404-57-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2404-61-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2404-63-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2808-81-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2808-83-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download