smokeloader | e35834d7b78b4f6161a4ec9d625087d0d4827d3927c78e32523fe0eabab8d576

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-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 2332 set thread context of 2524	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	31

Program crash 1 IoCs

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
1408	2332	WerFault.exe	30

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

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

33ba57a290511c97e2840371b8867e595a4fd9f6.exe

description	pid	Process	procid_target
PID 2332 wrote to memory of 2524	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	31
PID 2332 wrote to memory of 2524	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	31
PID 2332 wrote to memory of 2524	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	31
PID 2332 wrote to memory of 2524	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	31
PID 2332 wrote to memory of 2524	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	31
PID 2332 wrote to memory of 2524	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	31
PID 2332 wrote to memory of 2524	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	31
PID 2332 wrote to memory of 2524	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	31
PID 2332 wrote to memory of 2524	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	31
PID 2332 wrote to memory of 1408	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	32
PID 2332 wrote to memory of 1408	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	32
PID 2332 wrote to memory of 1408	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	32
PID 2332 wrote to memory of 1408	2332	33ba57a290511c97e2840371b8867e595a4fd9f6.exe	32

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:2332
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:2524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2332 -s 88
  2⤵
  - Program crash
  PID:1408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2332-0-0x0000000000BF1000-0x0000000000BF3000-memory.dmp

Filesize
8KB

Download
memory/2524-4-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2524-2-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2524-1-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download