smokeloader | 73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b

Analysis

max time kernel
151s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
10/10/2023, 09:49

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General

Target

73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe
Size

294KB
MD5

fcee9e1b0025545cb9dac6c55df91af5
SHA1

f701b4312336ab49a6a382db865c840012bf7af9
SHA256

73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b
SHA512

dd3143894fb5e18fd9088446d4f6cfa1f989631f747e2e10df4d785d2555cbfa61af3d0c8295a08872ce8f24a97e7268e116a15cc8ba301c3da47125bb55ddfd
SSDEEP

6144:5BoUhw660s+tx64h4BbA+3sdSz7V2Ywa:wUhw660s6xiAbwz0Y

Score

10^/10

smokeloader pub1 backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

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

Executes dropped EXE 2 IoCs

pid	Process
556	tbjfcfh
2820	tbjfcfh

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1328 set thread context of 1092	1328	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe	87
PID 556 set thread context of 2820	556	tbjfcfh	99

Checks SCSI registry key(s) 3 TTPs 6 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	tbjfcfh
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	tbjfcfh
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	tbjfcfh
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1092	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe
1092	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
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3096	Process not Found
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3096	Process not Found
3096	Process not Found
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3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
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3096	Process not Found
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3096	Process not Found
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3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found
3096	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3096	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1092	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe
2820	tbjfcfh

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3096	Process not Found
Token: SeCreatePagefilePrivilege	3096	Process not Found

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3096	Process not Found

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1328 wrote to memory of 1092	1328	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe	87
PID 1328 wrote to memory of 1092	1328	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe	87
PID 1328 wrote to memory of 1092	1328	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe	87
PID 1328 wrote to memory of 1092	1328	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe	87
PID 1328 wrote to memory of 1092	1328	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe	87
PID 1328 wrote to memory of 1092	1328	73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe	87
PID 556 wrote to memory of 2820	556	tbjfcfh	99
PID 556 wrote to memory of 2820	556	tbjfcfh	99
PID 556 wrote to memory of 2820	556	tbjfcfh	99
PID 556 wrote to memory of 2820	556	tbjfcfh	99
PID 556 wrote to memory of 2820	556	tbjfcfh	99
PID 556 wrote to memory of 2820	556	tbjfcfh	99

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\73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe
"C:\Users\Admin\AppData\Local\Temp\73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1328
- C:\Users\Admin\AppData\Local\Temp\73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe
  "C:\Users\Admin\AppData\Local\Temp\73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b.exe"
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:1092

C:\Users\Admin\AppData\Roaming\tbjfcfh
C:\Users\Admin\AppData\Roaming\tbjfcfh
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:556
- C:\Users\Admin\AppData\Roaming\tbjfcfh
  C:\Users\Admin\AppData\Roaming\tbjfcfh
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:2820

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\Roaming\tbjfcfh

Filesize
294KB

MD5
fcee9e1b0025545cb9dac6c55df91af5

SHA1
f701b4312336ab49a6a382db865c840012bf7af9

SHA256
73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b

SHA512
dd3143894fb5e18fd9088446d4f6cfa1f989631f747e2e10df4d785d2555cbfa61af3d0c8295a08872ce8f24a97e7268e116a15cc8ba301c3da47125bb55ddfd

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

Filesize
294KB

MD5
fcee9e1b0025545cb9dac6c55df91af5

SHA1
f701b4312336ab49a6a382db865c840012bf7af9

SHA256
73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b

SHA512
dd3143894fb5e18fd9088446d4f6cfa1f989631f747e2e10df4d785d2555cbfa61af3d0c8295a08872ce8f24a97e7268e116a15cc8ba301c3da47125bb55ddfd

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

Filesize
294KB

MD5
fcee9e1b0025545cb9dac6c55df91af5

SHA1
f701b4312336ab49a6a382db865c840012bf7af9

SHA256
73d979ea2a3882f6d459a4160b7f511dff48d8b3c0ecebe857d629b6bb70391b

SHA512
dd3143894fb5e18fd9088446d4f6cfa1f989631f747e2e10df4d785d2555cbfa61af3d0c8295a08872ce8f24a97e7268e116a15cc8ba301c3da47125bb55ddfd

Download Submit
memory/556-16-0x0000000002320000-0x0000000002420000-memory.dmp

Filesize
1024KB

Download
memory/1092-3-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1092-4-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1092-6-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1328-1-0x0000000002320000-0x0000000002420000-memory.dmp

Filesize
1024KB

Download
memory/1328-2-0x0000000003FD0000-0x0000000003FD9000-memory.dmp

Filesize
36KB

Download
memory/2820-22-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3096-5-0x0000000000E20000-0x0000000000E36000-memory.dmp

Filesize
88KB

Download
memory/3096-19-0x0000000002BE0000-0x0000000002BF6000-memory.dmp

Filesize
88KB

Download