smokeloader | e2bcf74dbc9f020e8f08492e6a10a601cff375971b66a19435c5faddb8ce7a97

Analysis

max time kernel
98s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-11-2024 00:41

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General

Target

1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe
Size

211KB
MD5

10dbd1a1516638aecff2d02c70c41c3a
SHA1

1968ec0826ed8dd2047c5f9bcd28acbea4a63294
SHA256

e2bcf74dbc9f020e8f08492e6a10a601cff375971b66a19435c5faddb8ce7a97
SHA512

8ef07deefe4781f0469061cb79213d77c3f31815fb9ad3ed3f8f83119c59410e6bee29a299a54926b6464083c5cea0c79c8fd75f7325a40bff7693823110df79
SSDEEP

3072:cbWoSdUCtu9MUy4xk2Q5Jco4RxJEPSvnARgYzbHOAg0FujD05A9aq/oHMP/CAPK:cqogFu6U3xkxaRHEF+AObaq5XC

Score

10^/10

smokeloader backdoor discovery trojan

Malware Config

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe

description	pid	Process	procid_target
PID 1940 set thread context of 4188	1940	1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe	88

Program crash 1 IoCs

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
3696	1940	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1968ec0826ed8dd2047c5f9bcd28acbea4a63294.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:

RegSvcs.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	RegSvcs.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	RegSvcs.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	RegSvcs.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe

description	pid	Process	procid_target
PID 1940 wrote to memory of 4188	1940	1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe	88
PID 1940 wrote to memory of 4188	1940	1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe	88
PID 1940 wrote to memory of 4188	1940	1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe	88
PID 1940 wrote to memory of 4188	1940	1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe	88
PID 1940 wrote to memory of 4188	1940	1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe	88

C:\Users\Admin\AppData\Local\Temp\1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe
"C:\Users\Admin\AppData\Local\Temp\1968ec0826ed8dd2047c5f9bcd28acbea4a63294.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Checks SCSI registry key(s)
  PID:4188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1940 -s 276
  2⤵
  - Program crash
  PID:3696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1940 -ip 1940
1⤵
PID:1620

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1940-0-0x0000000000AA1000-0x0000000000AA3000-memory.dmp

Filesize
8KB

Download
memory/4188-1-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download