smokeloader | 474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594

Analysis

max time kernel
131s
max time network
148s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
08/09/2024, 18:27

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General

Target

474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe
Size

2.1MB
MD5

1a6cdff2b97a62c28ea6ac397219f8af
SHA1

2a81951f33d443b482dad08e5900abec56af61fe
SHA256

474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594
SHA512

1d068806a36b500dc2f8ec03d24d9923b2c6b7a7e64f094646f8da6db77df863ce60a8f65dcc9a9ed69966b4b0643763c39072af0684f4b0ccea96f3f0ff406e
SSDEEP

49152:4OC7utMJFh8ZzgS9Up9i27GRx1+o/vL9p1KKPp5/GRoc+0cJ:4Z7utLZzgpp42ODtvL9Z0ovPJ

Score

10^/10

smokeloader backdoor discovery execution persistence trojan

Malware Config

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
5292	km111.exe
3248	km111.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3007475212-2160282277-2943627620-1000\Software\Microsoft\Windows\CurrentVersion\Run\km111 = "C:\\Users\\Admin\\AppData\\Roaming\\km111.exe"	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3456	powershell.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5916 set thread context of 336	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe	79
PID 5292 set thread context of 3248	5292	km111.exe	80

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	km111.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	km111.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.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	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3456	powershell.exe
3456	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe
Token: SeDebugPrivilege	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe
Token: SeDebugPrivilege	5292	km111.exe
Token: SeDebugPrivilege	5292	km111.exe
Token: SeDebugPrivilege	3248	km111.exe
Token: SeDebugPrivilege	3456	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 5916 wrote to memory of 5292	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe	78
PID 5916 wrote to memory of 5292	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe	78
PID 5916 wrote to memory of 5292	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe	78
PID 5916 wrote to memory of 336	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe	79
PID 5916 wrote to memory of 336	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe	79
PID 5916 wrote to memory of 336	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe	79
PID 5916 wrote to memory of 336	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe	79
PID 5916 wrote to memory of 336	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe	79
PID 5916 wrote to memory of 336	5916	474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe	79
PID 5292 wrote to memory of 3248	5292	km111.exe	80
PID 5292 wrote to memory of 3248	5292	km111.exe	80
PID 5292 wrote to memory of 3248	5292	km111.exe	80
PID 5292 wrote to memory of 3248	5292	km111.exe	80
PID 5292 wrote to memory of 3248	5292	km111.exe	80
PID 5292 wrote to memory of 3248	5292	km111.exe	80
PID 5292 wrote to memory of 3248	5292	km111.exe	80
PID 5292 wrote to memory of 3248	5292	km111.exe	80
PID 3248 wrote to memory of 3456	3248	km111.exe	82
PID 3248 wrote to memory of 3456	3248	km111.exe	82
PID 3248 wrote to memory of 3456	3248	km111.exe	82

C:\Users\Admin\AppData\Local\Temp\474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe
"C:\Users\Admin\AppData\Local\Temp\474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5916
- C:\Users\Admin\AppData\Local\Temp\km111.exe
  "C:\Users\Admin\AppData\Local\Temp\km111.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5292
- - C:\Users\Admin\AppData\Local\Temp\km111.exe
    "C:\Users\Admin\AppData\Local\Temp\km111.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3248
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Remove-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'km111';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'km111' -Value '"C:\Users\Admin\AppData\Roaming\km111.exe"' -PropertyType 'String'
      4⤵
      Adds Run key to start application
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3456
- C:\Users\Admin\AppData\Local\Temp\474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe
  "C:\Users\Admin\AppData\Local\Temp\474c65289e7c68055b5fced2afa669eb8fb4cce35b05c1b952ab0e90c4d8b594.exe"
  2⤵
  - Checks SCSI registry key(s)
  PID:336

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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\__PSScriptPolicyTest_340scgtw.v3o.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\km111.exe

Filesize
1.4MB

MD5
5d732b2da899b5936271c0b6dc4f5c28

SHA1
969650de38c8c1a41cf2f0c7f5ba7086ce06b28b

SHA256
a4b8ad50830b34fee2f177b29023424c3177946d96c7b755d8bf8274522e5c97

SHA512
2592d14ba5204b2511cada87853562abaab9a39cb35fb05537834620a2999abcad9e0bc3478714fc78c9c574bf620dcbf3535220d175c61477c3b108e1caf66e

Download Submit
memory/336-1158-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3248-2218-0x0000000074FCE000-0x0000000074FCF000-memory.dmp

Filesize
4KB

Download
memory/3248-2192-0x00000000003A0000-0x00000000003FE000-memory.dmp

Filesize
376KB

Download
memory/3248-2197-0x0000000004D70000-0x0000000004DD6000-memory.dmp

Filesize
408KB

Download
memory/3248-2195-0x0000000074FCE000-0x0000000074FCF000-memory.dmp

Filesize
4KB

Download
memory/3248-2193-0x0000000004C40000-0x0000000004CFC000-memory.dmp

Filesize
752KB

Download
memory/3456-2210-0x0000000006340000-0x0000000006697000-memory.dmp

Filesize
3.3MB

Download
memory/3456-2214-0x0000000006CF0000-0x0000000006D0A000-memory.dmp

Filesize
104KB

Download
memory/3456-2200-0x0000000005A70000-0x0000000005A92000-memory.dmp

Filesize
136KB

Download
memory/3456-2199-0x0000000005AC0000-0x00000000060EA000-memory.dmp

Filesize
6.2MB

Download
memory/3456-2198-0x0000000005370000-0x00000000053A6000-memory.dmp

Filesize
216KB

Download
memory/3456-2215-0x0000000006D40000-0x0000000006D62000-memory.dmp

Filesize
136KB

Download
memory/3456-2211-0x0000000006810000-0x000000000682E000-memory.dmp

Filesize
120KB

Download
memory/3456-2201-0x0000000006260000-0x00000000062C6000-memory.dmp

Filesize
408KB

Download
memory/3456-2212-0x0000000006AC0000-0x0000000006B0C000-memory.dmp

Filesize
304KB

Download
memory/3456-2213-0x00000000079E0000-0x0000000007A76000-memory.dmp

Filesize
600KB

Download
memory/5292-2196-0x0000000074FC0000-0x0000000075771000-memory.dmp

Filesize
7.7MB

Download
memory/5292-2194-0x0000000074FC0000-0x0000000075771000-memory.dmp

Filesize
7.7MB

Download
memory/5292-2189-0x0000000002B91000-0x0000000002B92000-memory.dmp

Filesize
4KB

Download
memory/5292-2185-0x0000000002E83000-0x0000000002E84000-memory.dmp

Filesize
4KB

Download
memory/5292-2183-0x0000000005550000-0x00000000055F6000-memory.dmp

Filesize
664KB

Download
memory/5292-2182-0x00000000054C0000-0x00000000054C1000-memory.dmp

Filesize
4KB

Download
memory/5292-1103-0x0000000005370000-0x000000000549A000-memory.dmp

Filesize
1.2MB

Download
memory/5292-2188-0x0000000002B36000-0x0000000002B37000-memory.dmp

Filesize
4KB

Download
memory/5292-1097-0x0000000005100000-0x000000000522A000-memory.dmp

Filesize
1.2MB

Download
memory/5292-1100-0x0000000074FC0000-0x0000000075771000-memory.dmp

Filesize
7.7MB

Download
memory/5292-1095-0x0000000074FC0000-0x0000000075771000-memory.dmp

Filesize
7.7MB

Download
memory/5292-1092-0x0000000000500000-0x0000000000662000-memory.dmp

Filesize
1.4MB

Download
memory/5916-39-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-38-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-28-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-24-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-20-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-10-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-3-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-1078-0x0000000074FC0000-0x0000000075771000-memory.dmp

Filesize
7.7MB

Download
memory/5916-1079-0x0000000005140000-0x00000000052DC000-memory.dmp

Filesize
1.6MB

Download
memory/5916-1080-0x00000000052E0000-0x000000000532C000-memory.dmp

Filesize
304KB

Download
memory/5916-6-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-8-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-12-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-18-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-22-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-1094-0x0000000006600000-0x0000000006654000-memory.dmp

Filesize
336KB

Download
memory/5916-1093-0x0000000007730000-0x0000000007CD6000-memory.dmp

Filesize
5.6MB

Download
memory/5916-1101-0x0000000074FC0000-0x0000000075771000-memory.dmp

Filesize
7.7MB

Download
memory/5916-1102-0x0000000074FC0000-0x0000000075771000-memory.dmp

Filesize
7.7MB

Download
memory/5916-1111-0x0000000074FC0000-0x0000000075771000-memory.dmp

Filesize
7.7MB

Download
memory/5916-1159-0x0000000074FC0000-0x0000000075771000-memory.dmp

Filesize
7.7MB

Download
memory/5916-26-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-30-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-4-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-32-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-41-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-35-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-0-0x0000000074FCE000-0x0000000074FCF000-memory.dmp

Filesize
4KB

Download
memory/5916-43-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-45-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-47-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-49-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-51-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-53-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-55-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-57-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-61-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-63-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-65-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-67-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-59-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-34-0x0000000074FC0000-0x0000000075771000-memory.dmp

Filesize
7.7MB

Download
memory/5916-16-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-14-0x0000000004E90000-0x00000000050AB000-memory.dmp

Filesize
2.1MB

Download
memory/5916-2-0x0000000004E90000-0x00000000050B2000-memory.dmp

Filesize
2.1MB

Download
memory/5916-1-0x0000000000220000-0x0000000000442000-memory.dmp

Filesize
2.1MB

Download