smokeloader | 3478077ba1325b1b78f026b86271dfd41ebf844344d9829f66c7b317de737f3e

Reason

Machine shutdown

General

Target

5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe
Size

242KB
MD5

09ad810630e8251be546dffede1480f3
SHA1

3e912255a14e30bc82a56d41ce3c3078bf0cd942
SHA256

5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f
SHA512

dedd8d91eade7680d454fb4cb315e104c79b8ded3e70fec01cbfaaf2b0235b2a43a5ad85e1ca58c3f1e4e417168dcf2a83a2a58966d9f8ad62c7f94d6108e2a4
SSDEEP

6144:IEZQdLhb/V7MB76567iM255WTHiNK3Lrje3Zwlku:zZWb/V7MBmjM2rAHl3vsZ

Score

10^/10

smokeloader 555 backdoor discovery trojan

Malware Config

Extracted

Family

smokeloader

Botnet

555

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3488 set thread context of 4340	3488	5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe	82

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	5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.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	5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292114432"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292114432"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365268"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "73"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = 99ebff004cc2ff000091f8000078d4000067c000003e9200001a6800f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4290799360"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365268"	LogonUI.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3124	LogonUI.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3488 wrote to memory of 4340	3488	5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe	82
PID 3488 wrote to memory of 4340	3488	5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe	82
PID 3488 wrote to memory of 4340	3488	5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe	82
PID 3488 wrote to memory of 4340	3488	5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe	82
PID 3488 wrote to memory of 4340	3488	5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe	82
PID 3488 wrote to memory of 4340	3488	5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe	82

C:\Users\Admin\AppData\Local\Temp\5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe
"C:\Users\Admin\AppData\Local\Temp\5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3488
- C:\Users\Admin\AppData\Local\Temp\5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe
  "C:\Users\Admin\AppData\Local\Temp\5dcdd9b2e6f81b11f4e4d0cb96709286deac6c8a8385d473f17d599ee55c150f.exe"
  2⤵
  - Checks SCSI registry key(s)
  PID:4340

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3a0f855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3488-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/3488-2-0x00000000009B0000-0x00000000009B9000-memory.dmp

Filesize
36KB

Download
memory/4340-3-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/4340-4-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/4340-7-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

Errors