smokeloader | 50b32932b9f18bcc2831aa83f4f3cca77d12540d7a78853409e18450921834ad

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 13:17

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General

Target

putty .exe
Size

544KB
MD5

0e64b6d4d68876c72a62d2d393fd8e15
SHA1

91451cff1cf4f6e69731c76c7b1113e455232c9c
SHA256

50b32932b9f18bcc2831aa83f4f3cca77d12540d7a78853409e18450921834ad
SHA512

1cf9e4917fae854df6fbc844574f1a2874c8033b90a189777a292adfbee21b7a3825352935e2d65da1d14ef7603ca16d69fb1b12843329fdf43257c527b77d1e
SSDEEP

12288:QiK05T+NhaEsDPEYkk3vNLXdVonSyNAx2ssT5E04j:KttcKivRdWnSyErsG0

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:

putty .exe

description pid process target process

PID 2932 set thread context of 2000 2932 putty .exe AddInProcess32.exe
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:

putty .exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language putty .exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

putty .exe

pid process

2932 putty .exe
2932 putty .exe
2932 putty .exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

putty .exe

description pid process

Token: SeDebugPrivilege 2932 putty .exe

description	pid	process	target process
PID 2932 set thread context of 2000	2932	putty .exe	AddInProcess32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	putty .exe

pid	process
2932	putty .exe
2932	putty .exe
2932	putty .exe

description	pid	process
Token: SeDebugPrivilege	2932	putty .exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

putty .exe

description	pid	process	target process
PID 2932 wrote to memory of 2000	2932	putty .exe	AddInProcess32.exe
PID 2932 wrote to memory of 2000	2932	putty .exe	AddInProcess32.exe
PID 2932 wrote to memory of 2000	2932	putty .exe	AddInProcess32.exe
PID 2932 wrote to memory of 2000	2932	putty .exe	AddInProcess32.exe
PID 2932 wrote to memory of 2000	2932	putty .exe	AddInProcess32.exe
PID 2932 wrote to memory of 2000	2932	putty .exe	AddInProcess32.exe
PID 2932 wrote to memory of 2000	2932	putty .exe	AddInProcess32.exe

C:\Users\Admin\AppData\Local\Temp\putty .exe
"C:\Users\Admin\AppData\Local\Temp\putty .exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  PID:2000

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/2000-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2000-18-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2000-17-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2000-16-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2000-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2000-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2932-8-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/2932-7-0x0000000000A40000-0x0000000000A46000-memory.dmp

Filesize
24KB

Download
memory/2932-0-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/2932-6-0x00000000008F0000-0x000000000090A000-memory.dmp

Filesize
104KB

Download
memory/2932-5-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/2932-4-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/2932-15-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/2932-3-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/2932-2-0x0000000000950000-0x0000000000994000-memory.dmp

Filesize
272KB

Download
memory/2932-1-0x00000000010E0000-0x000000000116C000-memory.dmp

Filesize
560KB

Download
memory/2932-19-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download