smokeloader | 6982578f0c5bf8815e82c4fb2d790457c769448998ac8f3c20a1bb79c7deb1ef

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15-09-2024 16:03

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General

Target

GZM1925_kansas.exe
Size

233KB
MD5

8f351981fe3674b7df70d5efcae20b80
SHA1

d445fdc8b283611313ee45334a7646891cb865d2
SHA256

febbc268d54ae4612531ceb696c39bd8c0a60ea22d2877751eecce32bd651257
SHA512

63f47d19bbc1db4107277a878c8ae3a6f3447bf51cb8a26843276bf290baf21690cda613ffde158d7b64f12df4740595f74e7e15973e1d715422e3ea10577395
SSDEEP

6144:9NaAAXMNwTkk67xtcmuHMlwBqjFR43j+aHQ2IVU:Ta5MNwlyKQr4z+aHQ2UU

Score

10^/10

smokeloader backdoor discovery trojan

Malware Config

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

Loads dropped DLL 1 IoCs

pid	Process
2588	GZM1925_kansas.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2968 set thread context of 2588	2968	GZM1925_kansas.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GZM1925_kansas.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2968	GZM1925_kansas.exe
2968	GZM1925_kansas.exe
2968	GZM1925_kansas.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2968	GZM1925_kansas.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2968 wrote to memory of 2588	2968	GZM1925_kansas.exe	30
PID 2968 wrote to memory of 2588	2968	GZM1925_kansas.exe	30
PID 2968 wrote to memory of 2588	2968	GZM1925_kansas.exe	30
PID 2968 wrote to memory of 2588	2968	GZM1925_kansas.exe	30
PID 2968 wrote to memory of 2588	2968	GZM1925_kansas.exe	30
PID 2968 wrote to memory of 2588	2968	GZM1925_kansas.exe	30
PID 2968 wrote to memory of 2588	2968	GZM1925_kansas.exe	30

C:\Users\Admin\AppData\Local\Temp\GZM1925_kansas.exe
"C:\Users\Admin\AppData\Local\Temp\GZM1925_kansas.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Users\Admin\AppData\Local\Temp\GZM1925_kansas.exe
  "{path}"
  2⤵
  - Loads dropped DLL
  PID:2588

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

\Users\Admin\AppData\Local\Temp\65B3.tmp

Filesize
1.2MB

MD5
d124f55b9393c976963407dff51ffa79

SHA1
2c7bbedd79791bfb866898c85b504186db610b5d

SHA256
ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

SHA512
278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

Download Submit
memory/2588-13-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2588-8-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2588-18-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2588-9-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2588-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2588-12-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2968-2-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/2968-6-0x0000000000B90000-0x0000000000BC8000-memory.dmp

Filesize
224KB

Download
memory/2968-7-0x0000000000520000-0x000000000052E000-memory.dmp

Filesize
56KB

Download
memory/2968-5-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/2968-4-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/2968-0-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/2968-1-0x0000000001110000-0x0000000001150000-memory.dmp

Filesize
256KB

Download
memory/2968-15-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/2968-3-0x00000000004A0000-0x00000000004AA000-memory.dmp

Filesize
40KB

Download