smokeloader | 20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69

Analysis

max time kernel
150s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2023, 20:07

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General

Target

20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69.exe
Size

191KB
MD5

25709f904617ff9ba8e9f9cc22d8edee
SHA1

efedbfc5ae18c5d69a41468767b02132ed421946
SHA256

20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69
SHA512

de1803e8ff2d82241aca69230f7ecbf326f15514e3a09e006065a134de12cd28f7aa58005c3d1580ce3865ea03d70153967f36558747afef96278d3299fcee3d
SSDEEP

3072:y8jc1J6tUFOJbW4ZQuZgY2jMcXG9hhcWJ7+TKVC0JX60bUv/:tI1YtUItOo9vd9QO7wICmJb

Score

10^/10

smokeloader sprg backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

sprg

Extracted

Family

smokeloader

Version

2022

http://hoh0aeghwugh2gie.com/

http://hie7doodohpae4na.com/

http://aek0aicifaloh1yo.com/

http://yic0oosaeiy7ahng.com/

http://wa5zu7sekai8xeih.com/

rc4.i32

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2088	wrvivub

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	20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	wrvivub
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	wrvivub
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	wrvivub
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Process not Found
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Process not Found

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4360	20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69.exe
4360	20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69.exe
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
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2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
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2636	Process not Found
2636	Process not Found
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2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
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2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
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2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2636	Process not Found

Suspicious behavior: MapViewOfSection 20 IoCs

pid	Process
4360	20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69.exe
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2636	Process not Found
2088	wrvivub

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2636	Process not Found
Token: SeCreatePagefilePrivilege	2636	Process not Found
Token: SeShutdownPrivilege	2636	Process not Found
Token: SeCreatePagefilePrivilege	2636	Process not Found

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 2104	2636	Process not Found	93
PID 2636 wrote to memory of 2104	2636	Process not Found	93
PID 2636 wrote to memory of 2104	2636	Process not Found	93
PID 2636 wrote to memory of 2104	2636	Process not Found	93
PID 2636 wrote to memory of 3912	2636	Process not Found	94
PID 2636 wrote to memory of 3912	2636	Process not Found	94
PID 2636 wrote to memory of 3912	2636	Process not Found	94
PID 2636 wrote to memory of 4276	2636	Process not Found	96
PID 2636 wrote to memory of 4276	2636	Process not Found	96
PID 2636 wrote to memory of 4276	2636	Process not Found	96
PID 2636 wrote to memory of 4276	2636	Process not Found	96
PID 2636 wrote to memory of 3040	2636	Process not Found	97
PID 2636 wrote to memory of 3040	2636	Process not Found	97
PID 2636 wrote to memory of 3040	2636	Process not Found	97
PID 2636 wrote to memory of 3852	2636	Process not Found	100
PID 2636 wrote to memory of 3852	2636	Process not Found	100
PID 2636 wrote to memory of 3852	2636	Process not Found	100
PID 2636 wrote to memory of 3852	2636	Process not Found	100
PID 2636 wrote to memory of 4696	2636	Process not Found	101
PID 2636 wrote to memory of 4696	2636	Process not Found	101
PID 2636 wrote to memory of 4696	2636	Process not Found	101
PID 2636 wrote to memory of 4696	2636	Process not Found	101
PID 2636 wrote to memory of 3624	2636	Process not Found	103
PID 2636 wrote to memory of 3624	2636	Process not Found	103
PID 2636 wrote to memory of 3624	2636	Process not Found	103
PID 2636 wrote to memory of 3624	2636	Process not Found	103
PID 2636 wrote to memory of 4216	2636	Process not Found	106
PID 2636 wrote to memory of 4216	2636	Process not Found	106
PID 2636 wrote to memory of 4216	2636	Process not Found	106
PID 2636 wrote to memory of 4904	2636	Process not Found	108
PID 2636 wrote to memory of 4904	2636	Process not Found	108
PID 2636 wrote to memory of 4904	2636	Process not Found	108
PID 2636 wrote to memory of 4904	2636	Process not Found	108

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\20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69.exe
"C:\Users\Admin\AppData\Local\Temp\20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4360

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:2104

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:3912

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:4276

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:3040

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:3852

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:4696

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:3624

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:4216

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:4904

C:\Users\Admin\AppData\Roaming\wrvivub
C:\Users\Admin\AppData\Roaming\wrvivub
1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2088

Network

MITRE ATT&CK Enterprise v6

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\wrvivub

Filesize
191KB

MD5
25709f904617ff9ba8e9f9cc22d8edee

SHA1
efedbfc5ae18c5d69a41468767b02132ed421946

SHA256
20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69

SHA512
de1803e8ff2d82241aca69230f7ecbf326f15514e3a09e006065a134de12cd28f7aa58005c3d1580ce3865ea03d70153967f36558747afef96278d3299fcee3d

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

Filesize
191KB

MD5
25709f904617ff9ba8e9f9cc22d8edee

SHA1
efedbfc5ae18c5d69a41468767b02132ed421946

SHA256
20aa1941a8c5639c7561516c39938ed769ac4716d822fdf3393e4fe09bc83f69

SHA512
de1803e8ff2d82241aca69230f7ecbf326f15514e3a09e006065a134de12cd28f7aa58005c3d1580ce3865ea03d70153967f36558747afef96278d3299fcee3d

Download Submit
memory/2088-184-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2104-171-0x0000000000600000-0x0000000000609000-memory.dmp

Filesize
36KB

Download
memory/2104-146-0x0000000000110000-0x000000000011B000-memory.dmp

Filesize
44KB

Download
memory/2104-147-0x0000000000110000-0x000000000011B000-memory.dmp

Filesize
44KB

Download
memory/2636-183-0x0000000002E90000-0x0000000002EA6000-memory.dmp

Filesize
88KB

Download
memory/2636-135-0x0000000002E50000-0x0000000002E66000-memory.dmp

Filesize
88KB

Download
memory/3040-174-0x0000000000A80000-0x0000000000A89000-memory.dmp

Filesize
36KB

Download
memory/3040-154-0x0000000000370000-0x000000000037C000-memory.dmp

Filesize
48KB

Download
memory/3040-155-0x0000000000A80000-0x0000000000A89000-memory.dmp

Filesize
36KB

Download
memory/3040-156-0x0000000000370000-0x000000000037C000-memory.dmp

Filesize
48KB

Download
memory/3624-163-0x0000000000900000-0x0000000000909000-memory.dmp

Filesize
36KB

Download
memory/3624-177-0x0000000000900000-0x0000000000909000-memory.dmp

Filesize
36KB

Download
memory/3624-164-0x0000000000710000-0x000000000071B000-memory.dmp

Filesize
44KB

Download
memory/3624-162-0x0000000000710000-0x000000000071B000-memory.dmp

Filesize
44KB

Download
memory/3852-175-0x0000000000370000-0x000000000037C000-memory.dmp

Filesize
48KB

Download
memory/3852-158-0x0000000000D20000-0x0000000000D47000-memory.dmp

Filesize
156KB

Download
memory/3852-157-0x0000000000D20000-0x0000000000D47000-memory.dmp

Filesize
156KB

Download
memory/3912-150-0x00000000001B0000-0x00000000001BF000-memory.dmp

Filesize
60KB

Download
memory/3912-149-0x0000000000110000-0x000000000011B000-memory.dmp

Filesize
44KB

Download
memory/3912-148-0x00000000001B0000-0x00000000001BF000-memory.dmp

Filesize
60KB

Download
memory/3912-172-0x0000000000110000-0x000000000011B000-memory.dmp

Filesize
44KB

Download
memory/4216-178-0x0000000000710000-0x000000000071B000-memory.dmp

Filesize
44KB

Download
memory/4216-165-0x0000000000F00000-0x0000000000F0D000-memory.dmp

Filesize
52KB

Download
memory/4216-167-0x0000000000F00000-0x0000000000F0D000-memory.dmp

Filesize
52KB

Download
memory/4216-166-0x0000000000710000-0x000000000071B000-memory.dmp

Filesize
44KB

Download
memory/4276-153-0x0000000000A80000-0x0000000000A89000-memory.dmp

Filesize
36KB

Download
memory/4276-173-0x00000000001B0000-0x00000000001BF000-memory.dmp

Filesize
60KB

Download
memory/4276-151-0x0000000000A80000-0x0000000000A89000-memory.dmp

Filesize
36KB

Download
memory/4276-152-0x00000000001B0000-0x00000000001BF000-memory.dmp

Filesize
60KB

Download
memory/4360-134-0x0000000000600000-0x0000000000609000-memory.dmp

Filesize
36KB

Download
memory/4360-136-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4696-160-0x0000000000D20000-0x0000000000D47000-memory.dmp

Filesize
156KB

Download
memory/4696-159-0x0000000000900000-0x0000000000909000-memory.dmp

Filesize
36KB

Download
memory/4696-176-0x0000000000D20000-0x0000000000D47000-memory.dmp

Filesize
156KB

Download
memory/4696-161-0x0000000000900000-0x0000000000909000-memory.dmp

Filesize
36KB

Download
memory/4904-170-0x0000000000F20000-0x0000000000F2B000-memory.dmp

Filesize
44KB

Download
memory/4904-179-0x0000000000F00000-0x0000000000F0D000-memory.dmp

Filesize
52KB

Download
memory/4904-168-0x0000000000F20000-0x0000000000F2B000-memory.dmp

Filesize
44KB

Download
memory/4904-169-0x0000000000F00000-0x0000000000F0D000-memory.dmp

Filesize
52KB

Download