smokeloader | b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a

Resubmissions

09-04-2024 13:56

240409-q8381sgg93 10

09-04-2024 13:56

09-04-2024 13:56

09-04-2024 13:56

02-12-2023 09:25

Analysis

max time kernel
1800s
max time network
1308s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
09-04-2024 13:56

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General

Target

b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe
Size

306KB
MD5

39984dd8a5e8246ce321592c274114fd
SHA1

7a80fcdffbc624c54b4df3beaa9a3d1d108c7943
SHA256

b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a
SHA512

3c9c30a1c0d1799b91d9feacc3868732dca0bc2e38abf988eb3d8b42f406133d087af3f7da4e2d6ba825df10a64157349feecf99b8f656de41b4f051e67b4c4e
SSDEEP

3072:ZEbn4NJpfmROpECfWYS1hiwAhvJtPOSm9Zh5eAIUUXdZ315U:GcNJpfmmHCiw6vYZKAI7NhM

Score

10^/10

smokeloader pu10 backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

pu10

Extracted

Family

smokeloader

Version

2020

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32

Signatures

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

Deletes itself 1 IoCs

pid	Process
3296	Process not Found

Executes dropped EXE 8 IoCs

pid	Process
2224	ABE0.exe
1256	ADC5.exe
424	urfirha
1180	urfirha
1436	urfirha
3012	urfirha
1848	urfirha
1312	urfirha

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2436 set thread context of 412	2436	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe	76
PID 424 set thread context of 1180	424	urfirha	84
PID 1436 set thread context of 3012	1436	urfirha	89
PID 1848 set thread context of 1312	1848	urfirha	94

Program crash 4 IoCs

pid	pid_target	Process	procid_target
3440	412	WerFault.exe	76
2672	1180	WerFault.exe	84
3580	3012	WerFault.exe	89
3644	1312	WerFault.exe	94

Checks SCSI registry key(s) 3 TTPs 12 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	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	urfirha
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	urfirha
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	urfirha
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	urfirha
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	urfirha
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	urfirha
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	urfirha
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	urfirha
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	urfirha

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
412	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe
412	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found
3296	Process not Found

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
412	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe
1180	urfirha
3012	urfirha
1312	urfirha

Suspicious use of AdjustPrivilegeToken 26 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found
Token: SeShutdownPrivilege	3296	Process not Found
Token: SeCreatePagefilePrivilege	3296	Process not Found

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 412	2436	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe	76
PID 2436 wrote to memory of 412	2436	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe	76
PID 2436 wrote to memory of 412	2436	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe	76
PID 2436 wrote to memory of 412	2436	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe	76
PID 2436 wrote to memory of 412	2436	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe	76
PID 2436 wrote to memory of 412	2436	b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe	76
PID 3296 wrote to memory of 2224	3296	Process not Found	80
PID 3296 wrote to memory of 2224	3296	Process not Found	80
PID 3296 wrote to memory of 2224	3296	Process not Found	80
PID 3296 wrote to memory of 1256	3296	Process not Found	81
PID 3296 wrote to memory of 1256	3296	Process not Found	81
PID 3296 wrote to memory of 1256	3296	Process not Found	81
PID 424 wrote to memory of 1180	424	urfirha	84
PID 424 wrote to memory of 1180	424	urfirha	84
PID 424 wrote to memory of 1180	424	urfirha	84
PID 424 wrote to memory of 1180	424	urfirha	84
PID 424 wrote to memory of 1180	424	urfirha	84
PID 424 wrote to memory of 1180	424	urfirha	84
PID 1436 wrote to memory of 3012	1436	urfirha	89
PID 1436 wrote to memory of 3012	1436	urfirha	89
PID 1436 wrote to memory of 3012	1436	urfirha	89
PID 1436 wrote to memory of 3012	1436	urfirha	89
PID 1436 wrote to memory of 3012	1436	urfirha	89
PID 1436 wrote to memory of 3012	1436	urfirha	89
PID 1848 wrote to memory of 1312	1848	urfirha	94
PID 1848 wrote to memory of 1312	1848	urfirha	94
PID 1848 wrote to memory of 1312	1848	urfirha	94
PID 1848 wrote to memory of 1312	1848	urfirha	94
PID 1848 wrote to memory of 1312	1848	urfirha	94
PID 1848 wrote to memory of 1312	1848	urfirha	94

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe
"C:\Users\Admin\AppData\Local\Temp\b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Users\Admin\AppData\Local\Temp\b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe
  "C:\Users\Admin\AppData\Local\Temp\b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a.exe"
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:412
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 412 -s 368
    3⤵
    - Program crash
    PID:3440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 412 -ip 412
1⤵
PID:4960

C:\Users\Admin\AppData\Local\Temp\ABE0.exe
C:\Users\Admin\AppData\Local\Temp\ABE0.exe
1⤵
- Executes dropped EXE
PID:2224

C:\Users\Admin\AppData\Local\Temp\ADC5.exe
C:\Users\Admin\AppData\Local\Temp\ADC5.exe
1⤵
- Executes dropped EXE
PID:1256

C:\Users\Admin\AppData\Roaming\urfirha
C:\Users\Admin\AppData\Roaming\urfirha
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:424
- C:\Users\Admin\AppData\Roaming\urfirha
  C:\Users\Admin\AppData\Roaming\urfirha
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:1180
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 364
    3⤵
    - Program crash
    PID:2672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1180 -ip 1180
1⤵
PID:1616

C:\Users\Admin\AppData\Roaming\urfirha
C:\Users\Admin\AppData\Roaming\urfirha
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1436
- C:\Users\Admin\AppData\Roaming\urfirha
  C:\Users\Admin\AppData\Roaming\urfirha
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:3012
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 364
    3⤵
    - Program crash
    PID:3580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3012 -ip 3012
1⤵
PID:3352

C:\Users\Admin\AppData\Roaming\urfirha
C:\Users\Admin\AppData\Roaming\urfirha
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Users\Admin\AppData\Roaming\urfirha
  C:\Users\Admin\AppData\Roaming\urfirha
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:1312
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1312 -s 364
    3⤵
    - Program crash
    PID:3644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1312 -ip 1312
1⤵
PID:3368

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ABE0.exe

Filesize
5.0MB

MD5
10ef283264e5050eb40f465feabeea60

SHA1
5c2b60ad7c2089db827532fed6069bdf74b505f8

SHA256
6d45d61463e3521aa6d3d31bd7e953d38c6381c0e1b526dcb28c7f2786669eb6

SHA512
c4e4080840991a829b05c76a55f6da6bffc9f618c7a1214d4d0b84e6e714d7b0e5646a99a5d92188f71801e6b7269069728f328d3a3b3fda577191372f399080

Download Submit
C:\Users\Admin\AppData\Local\Temp\ADC5.exe

Filesize
385KB

MD5
bdbfccc2b71c0d7f9de70aba81597b52

SHA1
ebb97f2a7fe51ff607a1d1b7557c995dd1cc275a

SHA256
082e8792e48e6ae0b16330f6bde833c42158ba2c9b75fad31ebc3d939f8a0042

SHA512
fba755745e82b6acd1e74e15ce9bc729a9b0e85bbb1975959c1b5d7ab1e6859efc715de87c3f4b6ef4bb21a25d9246142e96323cfc5d732ae6007b4690dcd417

Download Submit
C:\Users\Admin\AppData\Roaming\urfirha

Filesize
306KB

MD5
39984dd8a5e8246ce321592c274114fd

SHA1
7a80fcdffbc624c54b4df3beaa9a3d1d108c7943

SHA256
b7e1e34df8d8f63cad1d66970746631001c34f2bad3f86e3a517e5ebdfdd6b3a

SHA512
3c9c30a1c0d1799b91d9feacc3868732dca0bc2e38abf988eb3d8b42f406133d087af3f7da4e2d6ba825df10a64157349feecf99b8f656de41b4f051e67b4c4e

Download Submit
memory/412-3-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/412-4-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/412-8-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/424-49-0x0000000002C10000-0x0000000002D10000-memory.dmp

Filesize
1024KB

Download
memory/1180-56-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1180-52-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1256-19-0x0000000000010000-0x0000000000076000-memory.dmp

Filesize
408KB

Download
memory/1256-22-0x0000000077110000-0x0000000077362000-memory.dmp

Filesize
2.3MB

Download
memory/1256-32-0x0000000000010000-0x0000000000076000-memory.dmp

Filesize
408KB

Download
memory/1256-44-0x0000000000840000-0x000000000087D000-memory.dmp

Filesize
244KB

Download
memory/1256-45-0x0000000000010000-0x0000000000076000-memory.dmp

Filesize
408KB

Download
memory/1312-76-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1312-80-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1436-63-0x0000000002C0E000-0x0000000002C23000-memory.dmp

Filesize
84KB

Download
memory/1848-75-0x0000000002D80000-0x0000000002E80000-memory.dmp

Filesize
1024KB

Download
memory/2224-31-0x00000000FFDE0000-0x00000000FFE68000-memory.dmp

Filesize
544KB

Download
memory/2224-30-0x0000000002880000-0x0000000002906000-memory.dmp

Filesize
536KB

Download
memory/2224-28-0x00000000FFDE0000-0x00000000FFE68000-memory.dmp

Filesize
544KB

Download
memory/2224-24-0x00000000FFDE0000-0x00000000FFE68000-memory.dmp

Filesize
544KB

Download
memory/2224-23-0x0000000002880000-0x0000000002906000-memory.dmp

Filesize
536KB

Download
memory/2436-1-0x0000000002C20000-0x0000000002D20000-memory.dmp

Filesize
1024KB

Download
memory/2436-2-0x0000000004910000-0x0000000004919000-memory.dmp

Filesize
36KB

Download
memory/3012-64-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3012-68-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3296-53-0x0000000000460000-0x0000000000476000-memory.dmp

Filesize
88KB

Download
memory/3296-65-0x0000000002410000-0x0000000002426000-memory.dmp

Filesize
88KB

Download
memory/3296-5-0x0000000000670000-0x0000000000686000-memory.dmp

Filesize
88KB

Download
memory/3296-77-0x0000000002440000-0x0000000002456000-memory.dmp

Filesize
88KB

Download