smokeloader | 4c67be3bae55934bcd1d482461c9c6fcea941091d43adbcd512240f43c104b46

Analysis

max time kernel
150s
max time network
119s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01/02/2024, 22:48

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General

Target

87dd69225560d8450047f1b8536d2eeb.exe
Size

335KB
MD5

87dd69225560d8450047f1b8536d2eeb
SHA1

67bf606b4b3b34d7ef8ac5b1953ab1a7a8e7e33b
SHA256

4c67be3bae55934bcd1d482461c9c6fcea941091d43adbcd512240f43c104b46
SHA512

6a881c7e4fbbcd169e3ff0462a27a55576ebcc7b2adca851edee6c6a00a6e0d2b75b3ea696982a47558d65dad983a128a22ab65be0d7e6da79c1762f893233cf
SSDEEP

3072:Xuc6DKv3aKonFR0RLQ2UHxqmMx/7btmA2yls2LK5JP6orhVE+R28raarSy:XujDKvWFR0BbKhMXs2iP6MDfR2C

Score

10^/10

smokeloader 0308 backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

0308

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
1212	Process not Found

Executes dropped EXE 2 IoCs

pid	Process
2060	vviitrc
2180	vviitrc

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1752 set thread context of 2540	1752	87dd69225560d8450047f1b8536d2eeb.exe	28
PID 2060 set thread context of 2180	2060	vviitrc	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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	vviitrc
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	vviitrc
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	vviitrc
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	87dd69225560d8450047f1b8536d2eeb.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	87dd69225560d8450047f1b8536d2eeb.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	87dd69225560d8450047f1b8536d2eeb.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2540	87dd69225560d8450047f1b8536d2eeb.exe
2540	87dd69225560d8450047f1b8536d2eeb.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: MapViewOfSection 2 IoCs

pid	Process
2540	87dd69225560d8450047f1b8536d2eeb.exe
2180	vviitrc

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 2540	1752	87dd69225560d8450047f1b8536d2eeb.exe	28
PID 1752 wrote to memory of 2540	1752	87dd69225560d8450047f1b8536d2eeb.exe	28
PID 1752 wrote to memory of 2540	1752	87dd69225560d8450047f1b8536d2eeb.exe	28
PID 1752 wrote to memory of 2540	1752	87dd69225560d8450047f1b8536d2eeb.exe	28
PID 1752 wrote to memory of 2540	1752	87dd69225560d8450047f1b8536d2eeb.exe	28
PID 1752 wrote to memory of 2540	1752	87dd69225560d8450047f1b8536d2eeb.exe	28
PID 1752 wrote to memory of 2540	1752	87dd69225560d8450047f1b8536d2eeb.exe	28
PID 2476 wrote to memory of 2060	2476	taskeng.exe	32
PID 2476 wrote to memory of 2060	2476	taskeng.exe	32
PID 2476 wrote to memory of 2060	2476	taskeng.exe	32
PID 2476 wrote to memory of 2060	2476	taskeng.exe	32
PID 2060 wrote to memory of 2180	2060	vviitrc	33
PID 2060 wrote to memory of 2180	2060	vviitrc	33
PID 2060 wrote to memory of 2180	2060	vviitrc	33
PID 2060 wrote to memory of 2180	2060	vviitrc	33
PID 2060 wrote to memory of 2180	2060	vviitrc	33
PID 2060 wrote to memory of 2180	2060	vviitrc	33
PID 2060 wrote to memory of 2180	2060	vviitrc	33

C:\Users\Admin\AppData\Local\Temp\87dd69225560d8450047f1b8536d2eeb.exe
"C:\Users\Admin\AppData\Local\Temp\87dd69225560d8450047f1b8536d2eeb.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Users\Admin\AppData\Local\Temp\87dd69225560d8450047f1b8536d2eeb.exe
  "C:\Users\Admin\AppData\Local\Temp\87dd69225560d8450047f1b8536d2eeb.exe"
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:2540

C:\Windows\system32\taskeng.exe
taskeng.exe {932F4BEA-25D3-46EE-9F1B-BD5FAB7F3B54} S-1-5-21-3818056530-936619650-3554021955-1000:SFVRQGEO\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2476
- C:\Users\Admin\AppData\Roaming\vviitrc
  C:\Users\Admin\AppData\Roaming\vviitrc
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\Users\Admin\AppData\Roaming\vviitrc
    C:\Users\Admin\AppData\Roaming\vviitrc
    3⤵
    - Executes dropped EXE
    - Checks SCSI registry key(s)
    - Suspicious behavior: MapViewOfSection
    PID:2180

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\vviitrc

Filesize
335KB

MD5
87dd69225560d8450047f1b8536d2eeb

SHA1
67bf606b4b3b34d7ef8ac5b1953ab1a7a8e7e33b

SHA256
4c67be3bae55934bcd1d482461c9c6fcea941091d43adbcd512240f43c104b46

SHA512
6a881c7e4fbbcd169e3ff0462a27a55576ebcc7b2adca851edee6c6a00a6e0d2b75b3ea696982a47558d65dad983a128a22ab65be0d7e6da79c1762f893233cf

Download Submit
memory/1212-8-0x0000000002E10000-0x0000000002E26000-memory.dmp

Filesize
88KB

Download
memory/1212-25-0x0000000002D70000-0x0000000002D86000-memory.dmp

Filesize
88KB

Download
memory/1752-4-0x0000000000220000-0x000000000022A000-memory.dmp

Filesize
40KB

Download
memory/1752-1-0x00000000033D0000-0x00000000034D0000-memory.dmp

Filesize
1024KB

Download
memory/2060-23-0x0000000003344000-0x0000000003355000-memory.dmp

Filesize
68KB

Download
memory/2180-24-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2180-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2540-7-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2540-6-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2540-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2540-9-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2540-5-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download