smokeloader | 92f5bc1c04cfa529056b7f6cead4ec4aa2ce280ea51b166e4f62b7c40e0e32de

General

Target

file.exe
Size

24KB
MD5

4edc2181db86513f593f18793d30ebf9
SHA1

33a4a18759143c258703147bb5a05a19f9be65d6
SHA256

92f5bc1c04cfa529056b7f6cead4ec4aa2ce280ea51b166e4f62b7c40e0e32de
SHA512

1f74d7a3d3a956ab8c472d1977279b8cff4a3989b03c7c78d704ee18a34e98546a7678baaddcc5c22930f627f3ffde2101a613f13fa4d6306b74cdc4fbf240b5
SSDEEP

96:TbpKgeeUZvHZ6mkIWjT4nLkjDUPRx0UxkRbkPf4LNiRB4e3T3e3Lvn1fzNt:Y8AvQdIWfoLkjD8TOQPf4L9bnr

Score

10^/10

smokeloader backdoor collection persistence trojan

Malware Config

Signatures

Detects Smokeloader packer 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3800-148-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/3800-149-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/3800-150-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Executes dropped EXE 1 IoCs

Processes:

C071.exe

pid process

1772 C071.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

file.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation file.exe

pid	process
1772	C071.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	file.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

explorer.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	explorer.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	explorer.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	explorer.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

file.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Goyyvx = "\"C:\\Users\\Admin\\AppData\\Roaming\\Neyachzs\\Goyyvx.exe\""	file.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

file.exe

description pid process target process

PID 2268 set thread context of 3800 2268 file.exe file.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4456 1772 WerFault.exe C071.exe

description	pid	process	target process
PID 2268 set thread context of 3800	2268	file.exe	file.exe

pid	pid_target	process	target process
4456	1772	WerFault.exe	C071.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

Processes:

file.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	file.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	file.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	file.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

powershell.exefile.exefile.exe

pid	process
3400	powershell.exe
3400	powershell.exe
2268	file.exe
2268	file.exe
2268	file.exe
2268	file.exe
3800	file.exe
3800	file.exe
2648
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2648

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2648
Suspicious behavior: MapViewOfSection 13 IoCs

Processes:

file.exe

pid process

3800 file.exe
2648
2648
2648
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2648

pid	process
2648

pid	process
3800	file.exe
2648
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2648

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

file.exepowershell.exeC071.exe

description	pid	process
Token: SeDebugPrivilege	2268	file.exe
Token: SeDebugPrivilege	3400	powershell.exe
Token: SeDebugPrivilege	1772	C071.exe
Token: SeShutdownPrivilege	2648
Token: SeCreatePagefilePrivilege	2648

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

file.exe

description	pid	process	target process
PID 2268 wrote to memory of 3400	2268	file.exe	powershell.exe
PID 2268 wrote to memory of 3400	2268	file.exe	powershell.exe
PID 2268 wrote to memory of 3400	2268	file.exe	powershell.exe
PID 2268 wrote to memory of 4312	2268	file.exe	file.exe
PID 2268 wrote to memory of 4312	2268	file.exe	file.exe
PID 2268 wrote to memory of 4312	2268	file.exe	file.exe
PID 2268 wrote to memory of 2176	2268	file.exe	file.exe
PID 2268 wrote to memory of 2176	2268	file.exe	file.exe
PID 2268 wrote to memory of 2176	2268	file.exe	file.exe
PID 2268 wrote to memory of 3800	2268	file.exe	file.exe
PID 2268 wrote to memory of 3800	2268	file.exe	file.exe
PID 2268 wrote to memory of 3800	2268	file.exe	file.exe
PID 2268 wrote to memory of 3800	2268	file.exe	file.exe
PID 2268 wrote to memory of 3800	2268	file.exe	file.exe
PID 2268 wrote to memory of 3800	2268	file.exe	file.exe
PID 2648 wrote to memory of 1772	2648		C071.exe
PID 2648 wrote to memory of 1772	2648		C071.exe
PID 2648 wrote to memory of 1772	2648		C071.exe
PID 2648 wrote to memory of 3600	2648		explorer.exe
PID 2648 wrote to memory of 3600	2648		explorer.exe
PID 2648 wrote to memory of 3600	2648		explorer.exe
PID 2648 wrote to memory of 3600	2648		explorer.exe
PID 2648 wrote to memory of 2256	2648		explorer.exe
PID 2648 wrote to memory of 2256	2648		explorer.exe
PID 2648 wrote to memory of 2256	2648		explorer.exe
PID 2648 wrote to memory of 2760	2648		explorer.exe
PID 2648 wrote to memory of 2760	2648		explorer.exe
PID 2648 wrote to memory of 2760	2648		explorer.exe
PID 2648 wrote to memory of 2760	2648		explorer.exe
PID 2648 wrote to memory of 1344	2648		explorer.exe
PID 2648 wrote to memory of 1344	2648		explorer.exe
PID 2648 wrote to memory of 1344	2648		explorer.exe
PID 2648 wrote to memory of 4820	2648		explorer.exe
PID 2648 wrote to memory of 4820	2648		explorer.exe
PID 2648 wrote to memory of 4820	2648		explorer.exe
PID 2648 wrote to memory of 4820	2648		explorer.exe
PID 2648 wrote to memory of 4364	2648		explorer.exe
PID 2648 wrote to memory of 4364	2648		explorer.exe
PID 2648 wrote to memory of 4364	2648		explorer.exe

outlook_office_path 1 IoCs

Processes:

explorer.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	explorer.exe

outlook_win_path 1 IoCs

Processes:

explorer.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	explorer.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2268

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3400

C:\Users\Admin\AppData\Local\Temp\file.exe
C:\Users\Admin\AppData\Local\Temp\file.exe
2⤵
PID:4312

C:\Users\Admin\AppData\Local\Temp\file.exe
C:\Users\Admin\AppData\Local\Temp\file.exe
2⤵
PID:2176

C:\Users\Admin\AppData\Local\Temp\file.exe
C:\Users\Admin\AppData\Local\Temp\file.exe
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3800

C:\Users\Admin\AppData\Local\Temp\C071.exe
C:\Users\Admin\AppData\Local\Temp\C071.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1772 -s 1468
2⤵
- Program crash
PID:4456

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
- Accesses Microsoft Outlook profiles
- outlook_office_path
- outlook_win_path
PID:3600

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:2256

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:2760

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:1344

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:4820

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:4364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1772 -ip 1772
1⤵
PID:1904

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\C071.exe
Filesize
34KB

MD5
942d4384987c409eb5c3b5609a1c5216

SHA1
f705df7ca7b570357a19b19d28e5ea232c12e163

SHA256
46b3863afa7d05696d16d90c4fd7fefa1f2c9cb333dbf5abaacee35e39c0feee

SHA512
273620b4937d269735c4e915fa4f6c0dd48366b330fc7b2af37bdfb84a4e0813cbfa5fce78a96d2284d06ef43a2320b87a1a1fdc822aca75fbc373d12d808f88

Download Submit
C:\Users\Admin\AppData\Local\Temp\C071.exe
Filesize
34KB

MD5
942d4384987c409eb5c3b5609a1c5216

SHA1
f705df7ca7b570357a19b19d28e5ea232c12e163

SHA256
46b3863afa7d05696d16d90c4fd7fefa1f2c9cb333dbf5abaacee35e39c0feee

SHA512
273620b4937d269735c4e915fa4f6c0dd48366b330fc7b2af37bdfb84a4e0813cbfa5fce78a96d2284d06ef43a2320b87a1a1fdc822aca75fbc373d12d808f88

Download Submit
memory/1344-163-0x0000000000000000-mapping.dmp

Download
memory/1344-173-0x0000000000F60000-0x0000000000F69000-memory.dmp

Filesize
36KB

Download
memory/1344-165-0x0000000000F50000-0x0000000000F5F000-memory.dmp

Filesize
60KB

Download
memory/1344-164-0x0000000000F60000-0x0000000000F69000-memory.dmp

Filesize
36KB

Download
memory/1772-151-0x0000000000000000-mapping.dmp

Download
memory/1772-154-0x00000000009E0000-0x00000000009EE000-memory.dmp

Filesize
56KB

Download
memory/2176-146-0x0000000000000000-mapping.dmp

Download
memory/2256-159-0x00000000010E0000-0x00000000010EC000-memory.dmp

Filesize
48KB

Download
memory/2256-158-0x0000000000000000-mapping.dmp

Download
memory/2268-136-0x0000000005F30000-0x0000000005F52000-memory.dmp

Filesize
136KB

Download
memory/2268-135-0x0000000005DA0000-0x0000000005E32000-memory.dmp

Filesize
584KB

Download
memory/2268-133-0x0000000000080000-0x000000000008C000-memory.dmp

Filesize
48KB

Download
memory/2268-134-0x0000000006250000-0x00000000067F4000-memory.dmp

Filesize
5.6MB

Download
memory/2760-160-0x0000000000000000-mapping.dmp

Download
memory/2760-161-0x00000000003A0000-0x00000000003A7000-memory.dmp

Filesize
28KB

Download
memory/2760-162-0x0000000000390000-0x000000000039B000-memory.dmp

Filesize
44KB

Download
memory/2760-172-0x00000000003A0000-0x00000000003A7000-memory.dmp

Filesize
28KB

Download
memory/3400-142-0x0000000006470000-0x000000000648E000-memory.dmp

Filesize
120KB

Download
memory/3400-141-0x0000000005D30000-0x0000000005D96000-memory.dmp

Filesize
408KB

Download
memory/3400-137-0x0000000000000000-mapping.dmp

Download
memory/3400-138-0x0000000004EB0000-0x0000000004EE6000-memory.dmp

Filesize
216KB

Download
memory/3400-140-0x0000000005CC0000-0x0000000005D26000-memory.dmp

Filesize
408KB

Download
memory/3400-139-0x0000000005620000-0x0000000005C48000-memory.dmp

Filesize
6.2MB

Download
memory/3400-144-0x0000000006980000-0x000000000699A000-memory.dmp

Filesize
104KB

Download
memory/3400-143-0x0000000007AB0000-0x000000000812A000-memory.dmp

Filesize
6.5MB

Download
memory/3600-155-0x0000000000000000-mapping.dmp

Download
memory/3600-157-0x0000000001260000-0x00000000012CB000-memory.dmp

Filesize
428KB

Download
memory/3600-156-0x00000000012D0000-0x0000000001345000-memory.dmp

Filesize
468KB

Download
memory/3800-147-0x0000000000000000-mapping.dmp

Download
memory/3800-150-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3800-148-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3800-149-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4312-145-0x0000000000000000-mapping.dmp

Download
memory/4364-169-0x0000000000000000-mapping.dmp

Download
memory/4364-170-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/4364-171-0x00000000007E0000-0x00000000007EC000-memory.dmp

Filesize
48KB

Download
memory/4364-175-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/4820-166-0x0000000000000000-mapping.dmp

Download
memory/4820-167-0x00000000003D0000-0x00000000003D5000-memory.dmp

Filesize
20KB

Download
memory/4820-168-0x00000000003C0000-0x00000000003C9000-memory.dmp

Filesize
36KB

Download
memory/4820-174-0x00000000003D0000-0x00000000003D5000-memory.dmp

Filesize
20KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads