smokeloader | 7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5

Analysis

max time kernel
132s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05/11/2024, 07:06

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General

Target

7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5.exe
Size

211KB
MD5

9e5995fad8dd7a6c735d5307b24a700a
SHA1

3e8a964b96f733c7f00460e460b58cccbc50bdb8
SHA256

7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5
SHA512

5fbdb7471291fbc4a2116e87ba9731ae3e8726e947cfca73c72118c89e7ec8ac5c8d3f9c67fc388fe75eb029249000a72a5803a9def97e0927e881d012b2c4b2
SSDEEP

3072:aRoSdUCN54sEy4xU24hZJcYdTXEfkv2ARgYzbHOAg0FujDKUiqQWMIm3veP/CTPK:aRoAl5dE3xURTTEw+AOS6AeXC

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 4824 set thread context of 4972	4824	7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5.exe	94

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2280	4824	WerFault.exe	83

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	7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5.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 queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	RegSvcs.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	RegSvcs.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4824 wrote to memory of 4972	4824	7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5.exe	94
PID 4824 wrote to memory of 4972	4824	7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5.exe	94
PID 4824 wrote to memory of 4972	4824	7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5.exe	94
PID 4824 wrote to memory of 4972	4824	7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5.exe	94
PID 4824 wrote to memory of 4972	4824	7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5.exe	94

C:\Users\Admin\AppData\Local\Temp\7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5.exe
"C:\Users\Admin\AppData\Local\Temp\7bca3edc5e670585a268f05a34c4532d847e945591465db2352d5d7766951cd5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4824
- 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:4972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4824 -s 268
  2⤵
  - Program crash
  PID:2280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4824 -ip 4824
1⤵
PID:2220

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/4824-0-0x0000000000BB1000-0x0000000000BB3000-memory.dmp

Filesize
8KB

Download
memory/4972-1-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download