smokeloader | 1fc4a88f0220817b729357d09fdaef4fdc80e414d947ad35a8b4ddbd6bf28801

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01-01-2024 02:26

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General

Target

3ba6971e3e7a7136824b2b1a92ca55e7.exe
Size

271KB
MD5

3ba6971e3e7a7136824b2b1a92ca55e7
SHA1

2fb21afade8731ed860559716cf3b6a2d788d735
SHA256

1fc4a88f0220817b729357d09fdaef4fdc80e414d947ad35a8b4ddbd6bf28801
SHA512

38367546199facec607308e3a67c3060ef4523e10def2a2333c4070827ca6620781495756fe0f98bad69223aa40aa6bcd0084118a4da820ec9bcf4a28e32cd94
SSDEEP

6144:KI4vN6Fu2g06tURgSyIUZLhzWBxnDqZrcJPSMPs:+vIFu2f6tURILQjnD+rm

Score

10^/10

smokeloader 0708 backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

0708

Extracted

Family

smokeloader

Version

2020

http://readinglistforjuly1.xyz/

http://readinglistforjuly2.xyz/

http://readinglistforjuly3.xyz/

http://readinglistforjuly4.xyz/

http://readinglistforjuly5.xyz/

http://readinglistforjuly6.xyz/

http://readinglistforjuly7.xyz/

http://readinglistforjuly8.xyz/

http://readinglistforjuly9.xyz/

http://readinglistforjuly10.xyz/

http://readinglistforjuly1.site/

http://readinglistforjuly2.site/

http://readinglistforjuly3.site/

http://readinglistforjuly4.site/

http://readinglistforjuly5.site/

http://readinglistforjuly6.site/

http://readinglistforjuly7.site/

http://readinglistforjuly8.site/

http://readinglistforjuly9.site/

http://readinglistforjuly10.site/

rc4.i32

Signatures

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

Deletes itself 1 IoCs

pid	Process
1380	Process not Found

Executes dropped EXE 2 IoCs

pid	Process
2976	hthvivd
1956	hthvivd

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2424 set thread context of 2728	2424	3ba6971e3e7a7136824b2b1a92ca55e7.exe	28
PID 2976 set thread context of 1956	2976	hthvivd	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 enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	hthvivd
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3ba6971e3e7a7136824b2b1a92ca55e7.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3ba6971e3e7a7136824b2b1a92ca55e7.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3ba6971e3e7a7136824b2b1a92ca55e7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	hthvivd
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	hthvivd

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2728	3ba6971e3e7a7136824b2b1a92ca55e7.exe
2728	3ba6971e3e7a7136824b2b1a92ca55e7.exe
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found
1380	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2728	3ba6971e3e7a7136824b2b1a92ca55e7.exe
1956	hthvivd

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 2728	2424	3ba6971e3e7a7136824b2b1a92ca55e7.exe	28
PID 2424 wrote to memory of 2728	2424	3ba6971e3e7a7136824b2b1a92ca55e7.exe	28
PID 2424 wrote to memory of 2728	2424	3ba6971e3e7a7136824b2b1a92ca55e7.exe	28
PID 2424 wrote to memory of 2728	2424	3ba6971e3e7a7136824b2b1a92ca55e7.exe	28
PID 2424 wrote to memory of 2728	2424	3ba6971e3e7a7136824b2b1a92ca55e7.exe	28
PID 2424 wrote to memory of 2728	2424	3ba6971e3e7a7136824b2b1a92ca55e7.exe	28
PID 2424 wrote to memory of 2728	2424	3ba6971e3e7a7136824b2b1a92ca55e7.exe	28
PID 2972 wrote to memory of 2976	2972	taskeng.exe	32
PID 2972 wrote to memory of 2976	2972	taskeng.exe	32
PID 2972 wrote to memory of 2976	2972	taskeng.exe	32
PID 2972 wrote to memory of 2976	2972	taskeng.exe	32
PID 2976 wrote to memory of 1956	2976	hthvivd	33
PID 2976 wrote to memory of 1956	2976	hthvivd	33
PID 2976 wrote to memory of 1956	2976	hthvivd	33
PID 2976 wrote to memory of 1956	2976	hthvivd	33
PID 2976 wrote to memory of 1956	2976	hthvivd	33
PID 2976 wrote to memory of 1956	2976	hthvivd	33
PID 2976 wrote to memory of 1956	2976	hthvivd	33

C:\Users\Admin\AppData\Local\Temp\3ba6971e3e7a7136824b2b1a92ca55e7.exe
"C:\Users\Admin\AppData\Local\Temp\3ba6971e3e7a7136824b2b1a92ca55e7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2424
- C:\Users\Admin\AppData\Local\Temp\3ba6971e3e7a7136824b2b1a92ca55e7.exe
  "C:\Users\Admin\AppData\Local\Temp\3ba6971e3e7a7136824b2b1a92ca55e7.exe"
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:2728

C:\Windows\system32\taskeng.exe
taskeng.exe {B5258FB8-62CF-4D53-99E9-9CE9A774E1DD} S-1-5-21-3427588347-1492276948-3422228430-1000:QVMRJQQO\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Users\Admin\AppData\Roaming\hthvivd
  C:\Users\Admin\AppData\Roaming\hthvivd
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2976
- - C:\Users\Admin\AppData\Roaming\hthvivd
    C:\Users\Admin\AppData\Roaming\hthvivd
    3⤵
    - Executes dropped EXE
    - Checks SCSI registry key(s)
    - Suspicious behavior: MapViewOfSection
    PID:1956

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\hthvivd

Filesize
271KB

MD5
3ba6971e3e7a7136824b2b1a92ca55e7

SHA1
2fb21afade8731ed860559716cf3b6a2d788d735

SHA256
1fc4a88f0220817b729357d09fdaef4fdc80e414d947ad35a8b4ddbd6bf28801

SHA512
38367546199facec607308e3a67c3060ef4523e10def2a2333c4070827ca6620781495756fe0f98bad69223aa40aa6bcd0084118a4da820ec9bcf4a28e32cd94

Download Submit
memory/1380-7-0x0000000002260000-0x0000000002276000-memory.dmp

Filesize
88KB

Download
memory/1380-24-0x0000000002A70000-0x0000000002A86000-memory.dmp

Filesize
88KB

Download
memory/1956-23-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1956-25-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2424-2-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/2424-4-0x0000000000020000-0x000000000002A000-memory.dmp

Filesize
40KB

Download
memory/2728-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2728-5-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2728-6-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2728-8-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2976-18-0x00000000009B0000-0x0000000000AB0000-memory.dmp

Filesize
1024KB

Download