smokeloader | 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b

Analysis

max time kernel
151s
max time network
122s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
13/10/2023, 03:42

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General

Target

8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
Size

267KB
MD5

94bc47f91a540c7d4f293bd3208ca79d
SHA1

641aa079c31390ee951a0eb40ead4634d4180736
SHA256

8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b
SHA512

a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713
SSDEEP

3072:NrW2PMtQv+oFD63pXAZwID4BhWL4M9ME7YvTYpBxMCOoQGbQpnxNBYrcxqbY:VW2pv+oFD63py6oD9MSxC7EQpNYrY

Score

10^/10

smokeloader pub1 backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

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
1200	Process not Found

Executes dropped EXE 2 IoCs

pid	Process
2920	tairtad
2620	tairtad

Loads dropped DLL 1 IoCs

pid	Process
2920	tairtad

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2972 set thread context of 2416	2972	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe	28
PID 2920 set thread context of 2620	2920	tairtad	31

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	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	tairtad
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	tairtad
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	tairtad
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2416	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
2416	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found
1200	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1200	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2416	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
2620	tairtad

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 2416	2972	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe	28
PID 2972 wrote to memory of 2416	2972	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe	28
PID 2972 wrote to memory of 2416	2972	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe	28
PID 2972 wrote to memory of 2416	2972	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe	28
PID 2972 wrote to memory of 2416	2972	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe	28
PID 2972 wrote to memory of 2416	2972	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe	28
PID 2972 wrote to memory of 2416	2972	8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe	28
PID 2708 wrote to memory of 2920	2708	taskeng.exe	30
PID 2708 wrote to memory of 2920	2708	taskeng.exe	30
PID 2708 wrote to memory of 2920	2708	taskeng.exe	30
PID 2708 wrote to memory of 2920	2708	taskeng.exe	30
PID 2920 wrote to memory of 2620	2920	tairtad	31
PID 2920 wrote to memory of 2620	2920	tairtad	31
PID 2920 wrote to memory of 2620	2920	tairtad	31
PID 2920 wrote to memory of 2620	2920	tairtad	31
PID 2920 wrote to memory of 2620	2920	tairtad	31
PID 2920 wrote to memory of 2620	2920	tairtad	31
PID 2920 wrote to memory of 2620	2920	tairtad	31

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\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
"C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
  "C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe"
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:2416

C:\Windows\system32\taskeng.exe
taskeng.exe {BA910FEA-CDB1-4EDA-9335-F8CB867435D5} S-1-5-21-3849525425-30183055-657688904-1000:KGPMNUDG\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Users\Admin\AppData\Roaming\tairtad
  C:\Users\Admin\AppData\Roaming\tairtad
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2920
- - C:\Users\Admin\AppData\Roaming\tairtad
    C:\Users\Admin\AppData\Roaming\tairtad
    3⤵
    - Executes dropped EXE
    - Checks SCSI registry key(s)
    - Suspicious behavior: MapViewOfSection
    PID:2620

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\tairtad

Filesize
267KB

MD5
94bc47f91a540c7d4f293bd3208ca79d

SHA1
641aa079c31390ee951a0eb40ead4634d4180736

SHA256
8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b

SHA512
a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713

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

Filesize
267KB

MD5
94bc47f91a540c7d4f293bd3208ca79d

SHA1
641aa079c31390ee951a0eb40ead4634d4180736

SHA256
8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b

SHA512
a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713

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

Filesize
267KB

MD5
94bc47f91a540c7d4f293bd3208ca79d

SHA1
641aa079c31390ee951a0eb40ead4634d4180736

SHA256
8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b

SHA512
a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713

Download Submit
\Users\Admin\AppData\Roaming\tairtad

Filesize
267KB

MD5
94bc47f91a540c7d4f293bd3208ca79d

SHA1
641aa079c31390ee951a0eb40ead4634d4180736

SHA256
8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b

SHA512
a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713

Download Submit
memory/1200-8-0x0000000002C30000-0x0000000002C46000-memory.dmp

Filesize
88KB

Download
memory/1200-25-0x0000000002A60000-0x0000000002A76000-memory.dmp

Filesize
88KB

Download
memory/2416-7-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2416-9-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2416-6-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2416-5-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2416-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2620-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2920-19-0x00000000008A0000-0x00000000009A0000-memory.dmp

Filesize
1024KB

Download
memory/2972-1-0x00000000007C0000-0x00000000008C0000-memory.dmp

Filesize
1024KB

Download
memory/2972-2-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download