smokeloader | 5686d9765b6cedecebf28f9ec51cd7307064d69afd38798b087a2cbebca056fd

General

Target

file.exe
Size

230KB
MD5

d38a02f967e07a910ed35e289ec9c56a
SHA1

2533c534bfc11130198cd22cfc356e458c96fd7f
SHA256

5686d9765b6cedecebf28f9ec51cd7307064d69afd38798b087a2cbebca056fd
SHA512

7047954168b10c0a55a5e77755aec62eec63d2ff76dbae55090c246ec0943506e5515a9557be35640261159e774be7cfb13486a56b22137593bbaea31c8f44a4
SSDEEP

3072:cXV+nLl/P4DY5tEsFSwdN11aua4juc1/yEI3fCQwkr+ll:YMnL54DcEsAlJc1/yEUfDwkr+ll

Score

10^/10

smokeloader vidar 937 backdoor discovery spyware stealer trojan

Malware Config

Extracted

Family

vidar

Version

55.2

Botnet

937

C2

https://t.me/slivetalks

https://c.im/@xinibin420

Attributes

profile_id
937

Signatures

Detects Smokeloader packer 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4224-133-0x00000000001F0000-0x00000000001F9000-memory.dmp	family_smokeloader

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

ihhisvhBC2D.exe

pid process

4136 ihhisvh
4384 BC2D.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

BC2D.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation BC2D.exe
Loads dropped DLL 3 IoCs

Processes:

BC2D.exe

pid process

4384 BC2D.exe
4384 BC2D.exe
4384 BC2D.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2808 4384 WerFault.exe BC2D.exe

pid	process
4136	ihhisvh
4384	BC2D.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	BC2D.exe

pid	process
4384	BC2D.exe
4384	BC2D.exe
4384	BC2D.exe

pid	pid_target	process	target process
2808	4384	WerFault.exe	BC2D.exe

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

Processes:

ihhisvhfile.exe

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

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

BC2D.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	BC2D.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	BC2D.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4720 timeout.exe

pid	process
4720	timeout.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

file.exe

pid	process
4224	file.exe
4224	file.exe
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

3052
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

file.exeihhisvh

pid process

4224 file.exe
4136 ihhisvh

pid	process
3052

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

description	pid	process
Token: SeShutdownPrivilege	3052
Token: SeCreatePagefilePrivilege	3052
Token: SeShutdownPrivilege	3052
Token: SeCreatePagefilePrivilege	3052
Token: SeShutdownPrivilege	3052
Token: SeCreatePagefilePrivilege	3052
Token: SeShutdownPrivilege	3052
Token: SeCreatePagefilePrivilege	3052

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

BC2D.execmd.exe

description	pid	process	target process
PID 3052 wrote to memory of 4384	3052		BC2D.exe
PID 3052 wrote to memory of 4384	3052		BC2D.exe
PID 3052 wrote to memory of 4384	3052		BC2D.exe
PID 4384 wrote to memory of 2780	4384	BC2D.exe	cmd.exe
PID 4384 wrote to memory of 2780	4384	BC2D.exe	cmd.exe
PID 4384 wrote to memory of 2780	4384	BC2D.exe	cmd.exe
PID 2780 wrote to memory of 4720	2780	cmd.exe	timeout.exe
PID 2780 wrote to memory of 4720	2780	cmd.exe	timeout.exe
PID 2780 wrote to memory of 4720	2780	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4224

C:\Users\Admin\AppData\Roaming\ihhisvh
C:\Users\Admin\AppData\Roaming\ihhisvh
1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:4136

C:\Users\Admin\AppData\Local\Temp\BC2D.exe
C:\Users\Admin\AppData\Local\Temp\BC2D.exe
1⤵
- Executes dropped EXE
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:4384

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\BC2D.exe" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2780

C:\Windows\SysWOW64\timeout.exe
timeout /t 6
3⤵
- Delays execution with timeout.exe
PID:4720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 1972
2⤵
- Program crash
PID:2808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4384 -ip 4384
1⤵
PID:1116

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

4

T1012

System Information Discovery

4

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\mozglue.dll
Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll
Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\ProgramData\sqlite3.dll
Filesize
1.1MB

MD5
1f44d4d3087c2b202cf9c90ee9d04b0f

SHA1
106a3ebc9e39ab6ddb3ff987efb6527c956f192d

SHA256
4841020c8bd06b08fde6e44cbe2e2ab33439e1c8368e936ec5b00dc0584f7260

SHA512
b614c72a3c1ce681ebffa628e29aa50275cc80ca9267380960c5198ea4d0a3f2df6cfb7275491d220bad72f14fc94e6656501e9a061d102fb11e00cfda2beb45

Download Submit
C:\Users\Admin\AppData\Local\Temp\BC2D.exe
Filesize
332KB

MD5
e75ec445beb33e400201791a3fba433d

SHA1
a2c29449d05c2a26077e45dfcb45e37ef7c638a8

SHA256
f16953dfb98fb54bde6e9410883839e228ee09aa0a09892ab56a5ddfc76e7a0e

SHA512
4efdb748bcaef9aa1ca5bc934d5797f692a7bbd974fc675318124a4bfce62e074fd32a3033a10057a5af5cc1b9d2c7d87de316c31bce0f5b7d61983f1f967134

Download Submit
C:\Users\Admin\AppData\Local\Temp\BC2D.exe
Filesize
332KB

MD5
e75ec445beb33e400201791a3fba433d

SHA1
a2c29449d05c2a26077e45dfcb45e37ef7c638a8

SHA256
f16953dfb98fb54bde6e9410883839e228ee09aa0a09892ab56a5ddfc76e7a0e

SHA512
4efdb748bcaef9aa1ca5bc934d5797f692a7bbd974fc675318124a4bfce62e074fd32a3033a10057a5af5cc1b9d2c7d87de316c31bce0f5b7d61983f1f967134

Download Submit
C:\Users\Admin\AppData\Roaming\ihhisvh
Filesize
230KB

MD5
d38a02f967e07a910ed35e289ec9c56a

SHA1
2533c534bfc11130198cd22cfc356e458c96fd7f

SHA256
5686d9765b6cedecebf28f9ec51cd7307064d69afd38798b087a2cbebca056fd

SHA512
7047954168b10c0a55a5e77755aec62eec63d2ff76dbae55090c246ec0943506e5515a9557be35640261159e774be7cfb13486a56b22137593bbaea31c8f44a4

Download Submit
C:\Users\Admin\AppData\Roaming\ihhisvh
Filesize
230KB

MD5
d38a02f967e07a910ed35e289ec9c56a

SHA1
2533c534bfc11130198cd22cfc356e458c96fd7f

SHA256
5686d9765b6cedecebf28f9ec51cd7307064d69afd38798b087a2cbebca056fd

SHA512
7047954168b10c0a55a5e77755aec62eec63d2ff76dbae55090c246ec0943506e5515a9557be35640261159e774be7cfb13486a56b22137593bbaea31c8f44a4

Download Submit
memory/2780-150-0x0000000000000000-mapping.dmp

Download
memory/4136-138-0x0000000002FC3000-0x0000000002FD9000-memory.dmp

Filesize
88KB

Download
memory/4136-139-0x0000000000400000-0x0000000002C27000-memory.dmp

Filesize
40.2MB

Download
memory/4136-140-0x0000000000400000-0x0000000002C27000-memory.dmp

Filesize
40.2MB

Download
memory/4224-134-0x0000000000400000-0x0000000002C27000-memory.dmp

Filesize
40.2MB

Download
memory/4224-135-0x0000000000400000-0x0000000002C27000-memory.dmp

Filesize
40.2MB

Download
memory/4224-132-0x0000000002D63000-0x0000000002D79000-memory.dmp

Filesize
88KB

Download
memory/4224-133-0x00000000001F0000-0x00000000001F9000-memory.dmp

Filesize
36KB

Download
memory/4384-144-0x0000000000893000-0x00000000008BF000-memory.dmp

Filesize
176KB

Download
memory/4384-145-0x0000000000820000-0x0000000000869000-memory.dmp

Filesize
292KB

Download
memory/4384-146-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/4384-141-0x0000000000000000-mapping.dmp

Download
memory/4384-152-0x0000000000893000-0x00000000008BF000-memory.dmp

Filesize
176KB

Download
memory/4384-153-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/4720-151-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads