smokeloader | 2f4140d42063d60f416435b8cc1493588293c7516e25aad65fc6929125b4c7dd

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
13-10-2023 21:31

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General

Target

d20f88b50c4b3b1083499e32d674fb58.exe
Size

268KB
MD5

d20f88b50c4b3b1083499e32d674fb58
SHA1

d41276d90a406273cc748c0dcf648fb2bb965296
SHA256

2f4140d42063d60f416435b8cc1493588293c7516e25aad65fc6929125b4c7dd
SHA512

9275c9dc0336a808cde2f776254ac35f9bdab52ace7486dbe7d8427fefcfa6117cfa030c2d2f302bb6ff60f92b9eacfca11deaa2203083857674bcca2a3f4028
SSDEEP

3072:OnEwxB2mXQ+YJq4I7MqGnohhiEaYpMA7Et4Y+rpuJTY4VBUqsZTwNA:JwxVXQ+Yo4EM6hIY2AE4Y+luZTnjOt

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
1212	Process not Found

Executes dropped EXE 2 IoCs

pid	Process
2544	avafgsh
1052	avafgsh

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1728 set thread context of 2200	1728	d20f88b50c4b3b1083499e32d674fb58.exe	28
PID 2544 set thread context of 1052	2544	avafgsh	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	avafgsh
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	d20f88b50c4b3b1083499e32d674fb58.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	d20f88b50c4b3b1083499e32d674fb58.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	d20f88b50c4b3b1083499e32d674fb58.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	avafgsh
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	avafgsh

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2200	d20f88b50c4b3b1083499e32d674fb58.exe
2200	d20f88b50c4b3b1083499e32d674fb58.exe
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found
1212	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1212	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2200	d20f88b50c4b3b1083499e32d674fb58.exe
1052	avafgsh

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 2200	1728	d20f88b50c4b3b1083499e32d674fb58.exe	28
PID 1728 wrote to memory of 2200	1728	d20f88b50c4b3b1083499e32d674fb58.exe	28
PID 1728 wrote to memory of 2200	1728	d20f88b50c4b3b1083499e32d674fb58.exe	28
PID 1728 wrote to memory of 2200	1728	d20f88b50c4b3b1083499e32d674fb58.exe	28
PID 1728 wrote to memory of 2200	1728	d20f88b50c4b3b1083499e32d674fb58.exe	28
PID 1728 wrote to memory of 2200	1728	d20f88b50c4b3b1083499e32d674fb58.exe	28
PID 1728 wrote to memory of 2200	1728	d20f88b50c4b3b1083499e32d674fb58.exe	28
PID 2624 wrote to memory of 2544	2624	taskeng.exe	32
PID 2624 wrote to memory of 2544	2624	taskeng.exe	32
PID 2624 wrote to memory of 2544	2624	taskeng.exe	32
PID 2624 wrote to memory of 2544	2624	taskeng.exe	32
PID 2544 wrote to memory of 1052	2544	avafgsh	33
PID 2544 wrote to memory of 1052	2544	avafgsh	33
PID 2544 wrote to memory of 1052	2544	avafgsh	33
PID 2544 wrote to memory of 1052	2544	avafgsh	33
PID 2544 wrote to memory of 1052	2544	avafgsh	33
PID 2544 wrote to memory of 1052	2544	avafgsh	33
PID 2544 wrote to memory of 1052	2544	avafgsh	33

C:\Users\Admin\AppData\Local\Temp\d20f88b50c4b3b1083499e32d674fb58.exe
"C:\Users\Admin\AppData\Local\Temp\d20f88b50c4b3b1083499e32d674fb58.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Users\Admin\AppData\Local\Temp\d20f88b50c4b3b1083499e32d674fb58.exe
  "C:\Users\Admin\AppData\Local\Temp\d20f88b50c4b3b1083499e32d674fb58.exe"
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:2200

C:\Windows\system32\taskeng.exe
taskeng.exe {15E2F6C0-5EBC-44ED-BAB8-5CDD54F346CD} S-1-5-21-86725733-3001458681-3405935542-1000:ZWKQHIWB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Users\Admin\AppData\Roaming\avafgsh
  C:\Users\Admin\AppData\Roaming\avafgsh
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2544
- - C:\Users\Admin\AppData\Roaming\avafgsh
    C:\Users\Admin\AppData\Roaming\avafgsh
    3⤵
    - Executes dropped EXE
    - Checks SCSI registry key(s)
    - Suspicious behavior: MapViewOfSection
    PID:1052

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\avafgsh

Filesize
268KB

MD5
d20f88b50c4b3b1083499e32d674fb58

SHA1
d41276d90a406273cc748c0dcf648fb2bb965296

SHA256
2f4140d42063d60f416435b8cc1493588293c7516e25aad65fc6929125b4c7dd

SHA512
9275c9dc0336a808cde2f776254ac35f9bdab52ace7486dbe7d8427fefcfa6117cfa030c2d2f302bb6ff60f92b9eacfca11deaa2203083857674bcca2a3f4028

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

Filesize
268KB

MD5
d20f88b50c4b3b1083499e32d674fb58

SHA1
d41276d90a406273cc748c0dcf648fb2bb965296

SHA256
2f4140d42063d60f416435b8cc1493588293c7516e25aad65fc6929125b4c7dd

SHA512
9275c9dc0336a808cde2f776254ac35f9bdab52ace7486dbe7d8427fefcfa6117cfa030c2d2f302bb6ff60f92b9eacfca11deaa2203083857674bcca2a3f4028

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

Filesize
268KB

MD5
d20f88b50c4b3b1083499e32d674fb58

SHA1
d41276d90a406273cc748c0dcf648fb2bb965296

SHA256
2f4140d42063d60f416435b8cc1493588293c7516e25aad65fc6929125b4c7dd

SHA512
9275c9dc0336a808cde2f776254ac35f9bdab52ace7486dbe7d8427fefcfa6117cfa030c2d2f302bb6ff60f92b9eacfca11deaa2203083857674bcca2a3f4028

Download Submit
memory/1052-31-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1052-29-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1212-18-0x000007FEDEB70000-0x000007FEDEB7A000-memory.dmp

Filesize
40KB

Download
memory/1212-20-0x000007FEDEB70000-0x000007FEDEB7A000-memory.dmp

Filesize
40KB

Download
memory/1212-8-0x00000000029A0000-0x00000000029B6000-memory.dmp

Filesize
88KB

Download
memory/1212-30-0x0000000002A00000-0x0000000002A16000-memory.dmp

Filesize
88KB

Download
memory/1212-17-0x000007FEF5AE0000-0x000007FEF5C23000-memory.dmp

Filesize
1.3MB

Download
memory/1212-19-0x000007FEF5AE0000-0x000007FEF5C23000-memory.dmp

Filesize
1.3MB

Download
memory/1728-1-0x0000000000830000-0x0000000000930000-memory.dmp

Filesize
1024KB

Download
memory/1728-13-0x0000000000830000-0x0000000000930000-memory.dmp

Filesize
1024KB

Download
memory/1728-5-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/2200-9-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2200-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2200-4-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2200-7-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2200-6-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2544-24-0x0000000000850000-0x0000000000950000-memory.dmp

Filesize
1024KB

Download