smokeloader | 6982578f0c5bf8815e82c4fb2d790457c769448998ac8f3c20a1bb79c7deb1ef

Analysis

max time kernel
135s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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
392	GZM1925_kansas.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1580 set thread context of 392	1580	GZM1925_kansas.exe	93

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

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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	GZM1925_kansas.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	GZM1925_kansas.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	GZM1925_kansas.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1580	GZM1925_kansas.exe
1580	GZM1925_kansas.exe
1580	GZM1925_kansas.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1580	GZM1925_kansas.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 392	1580	GZM1925_kansas.exe	93
PID 1580 wrote to memory of 392	1580	GZM1925_kansas.exe	93
PID 1580 wrote to memory of 392	1580	GZM1925_kansas.exe	93
PID 1580 wrote to memory of 392	1580	GZM1925_kansas.exe	93
PID 1580 wrote to memory of 392	1580	GZM1925_kansas.exe	93
PID 1580 wrote to memory of 392	1580	GZM1925_kansas.exe	93

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:1580
- C:\Users\Admin\AppData\Local\Temp\GZM1925_kansas.exe
  "{path}"
  2⤵
  - Loads dropped DLL
  - Checks SCSI registry key(s)
  PID:392

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

Replay Monitor

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Downloads

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

Filesize
1.6MB

MD5
4f3387277ccbd6d1f21ac5c07fe4ca68

SHA1
e16506f662dc92023bf82def1d621497c8ab5890

SHA256
767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

SHA512
9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

Download Submit
memory/392-12-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/392-18-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/392-14-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1580-4-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/1580-5-0x0000000004D40000-0x0000000004D4A000-memory.dmp

Filesize
40KB

Download
memory/1580-6-0x0000000008DA0000-0x0000000008E3C000-memory.dmp

Filesize
624KB

Download
memory/1580-7-0x0000000007920000-0x000000000792A000-memory.dmp

Filesize
40KB

Download
memory/1580-8-0x000000007453E000-0x000000007453F000-memory.dmp

Filesize
4KB

Download
memory/1580-9-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/1580-10-0x0000000009070000-0x00000000090A8000-memory.dmp

Filesize
224KB

Download
memory/1580-11-0x0000000007C60000-0x0000000007C6E000-memory.dmp

Filesize
56KB

Download
memory/1580-0-0x000000007453E000-0x000000007453F000-memory.dmp

Filesize
4KB

Download
memory/1580-3-0x0000000007770000-0x0000000007802000-memory.dmp

Filesize
584KB

Download
memory/1580-2-0x0000000007C80000-0x0000000008224000-memory.dmp

Filesize
5.6MB

Download
memory/1580-1-0x0000000000860000-0x00000000008A0000-memory.dmp

Filesize
256KB

Download
memory/1580-19-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download