smokeloader | a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-11-2024 20:27

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General

Target

a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1.exe
Size

211KB
MD5

bb976fdd50ef7af2b720ce08ef62e082
SHA1

1d8ef0f91941d95bbd4b9d3b067069ed7d7cee58
SHA256

a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1
SHA512

db3fb31012c48e375f313b78bfa29a3409106a9a17eacff4e5b1b214ccc319ac6bbbf1072f0dd6e4fb9e798b9b112568ddd1a0c9c89bc5af01ee1d96500d3896
SSDEEP

3072:dbWoSdUCtu9MUy4xk2Q5Jco4RxJEPSvnARgYzbHOAg0FujDY5sS86WV1+HGfz6FG:dqogFu6U3xkxaRHEF+AOj9PVTfz6hXC

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

description	pid	Process	procid_target
PID 3952 set thread context of 4472	3952	a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1.exe	91

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2856	3952	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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1.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

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

description	pid	Process	procid_target
PID 3952 wrote to memory of 4472	3952	a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1.exe	91
PID 3952 wrote to memory of 4472	3952	a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1.exe	91
PID 3952 wrote to memory of 4472	3952	a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1.exe	91
PID 3952 wrote to memory of 4472	3952	a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1.exe	91
PID 3952 wrote to memory of 4472	3952	a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1.exe	91

C:\Users\Admin\AppData\Local\Temp\a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1.exe
"C:\Users\Admin\AppData\Local\Temp\a5abd9bf3f7d64920e664294bdb09eaf8ef049a3f6001c4429c0ab05e12378d1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3952
- 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:4472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3952 -s 276
  2⤵
  - Program crash
  PID:2856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3952 -ip 3952
1⤵
PID:3680

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/3952-0-0x00000000005C1000-0x00000000005C3000-memory.dmp

Filesize
8KB

Download
memory/4472-1-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

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