smokeloader | e35834d7b78b4f6161a4ec9d625087d0d4827d3927c78e32523fe0eabab8d576

Analysis

max time kernel
92s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-11-2024 23:51

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General

Target

33ba57a290511c97e2840371b8867e595a4fd9f6.exe
Size

211KB
MD5

c0d17b5d27eabfd8e0f12567e620332e
SHA1

33ba57a290511c97e2840371b8867e595a4fd9f6
SHA256

e35834d7b78b4f6161a4ec9d625087d0d4827d3927c78e32523fe0eabab8d576
SHA512

f778fdd47910ae99e264a2aefb315810fe81a24f358ff29b5f83185b773622cd987fbcb658fb1e0db61303fcbc9bf5e745a54986fdb63f296e7bca794d9e41ee
SSDEEP

3072:FbWoSdUCtu9MUy4xk2Q5Jco4RxJEPSvnARgYzbHOAg0FujDg5HH3bbJlqyDY6P/S:FqogFu6U3xkxaRHEF+AO4bJllXC

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:

33ba57a290511c97e2840371b8867e595a4fd9f6.exe

description	pid	Process	procid_target
PID 1304 set thread context of 1164	1304	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	95

Program crash 1 IoCs

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
844	1304	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:

33ba57a290511c97e2840371b8867e595a4fd9f6.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	33ba57a290511c97e2840371b8867e595a4fd9f6.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 8 IoCs

Processes:

33ba57a290511c97e2840371b8867e595a4fd9f6.exe

description	pid	Process	procid_target
PID 1304 wrote to memory of 3052	1304	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	94
PID 1304 wrote to memory of 3052	1304	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	94
PID 1304 wrote to memory of 3052	1304	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	94
PID 1304 wrote to memory of 1164	1304	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	95
PID 1304 wrote to memory of 1164	1304	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	95
PID 1304 wrote to memory of 1164	1304	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	95
PID 1304 wrote to memory of 1164	1304	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	95
PID 1304 wrote to memory of 1164	1304	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	95

C:\Users\Admin\AppData\Local\Temp\33ba57a290511c97e2840371b8867e595a4fd9f6.exe
"C:\Users\Admin\AppData\Local\Temp\33ba57a290511c97e2840371b8867e595a4fd9f6.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1304
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:3052
- 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:1164
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1304 -s 276
  2⤵
  - Program crash
  PID:844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1304 -ip 1304
1⤵
PID:2424

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/1164-1-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1304-0-0x0000000000AB1000-0x0000000000AB3000-memory.dmp

Filesize
8KB

Download