smokeloader | 29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724 | Triage

Analysis

max time kernel
90s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
15-06-2022 13:21

Sharing

Report Analysis Logs

General

Target

29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe
Size

180KB
MD5

33853c2fe24684a7211293ccc4747bf1
SHA1

6ef73fd47628c650ea4c028e833c4fb399ceab67
SHA256

29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724
SHA512

7f9060902747dcc6e3eb2e7e9bbae3146ec8c9228aeff16a47a07ad1e2c749d50143d289a81755a17dba8f561b718ec6b188df55e11c5f4582e48b94a1eb9ac5

Score

10^/10

smokeloader backdoor trojan

Malware Config

Extracted

Family

smokeloader

Version

2018

C2

http://jo15y.xyz/br/

rc4.i32

rc4.i32

Signatures

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

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

System Information Discovery

Processes:

29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe

description	pid	process	target process
PID 816 set thread context of 2160	816	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe

Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe

pid	process
2160	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe
2160	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe

pid	process
816	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe
816	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe
816	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe
816	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe

description	pid	process	target process
PID 816 wrote to memory of 2160	816	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe
PID 816 wrote to memory of 2160	816	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe
PID 816 wrote to memory of 2160	816	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe
PID 816 wrote to memory of 2160	816	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe	29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe

C:\Users\Admin\AppData\Local\Temp\29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe
"C:\Users\Admin\AppData\Local\Temp\29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:816

C:\Users\Admin\AppData\Local\Temp\29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe
"C:\Users\Admin\AppData\Local\Temp\29bd4ef84c9cd950f396b4e46a06f56775bf2272104c6b868187a3bce40cf724.exe"
2⤵
- Maps connected drives based on registry
- Suspicious behavior: MapViewOfSection
PID:2160

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

Peripheral Device Discovery

System Information Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/816-130-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2160-131-0x0000000000000000-mapping.dmp

Download
memory/2160-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2684-132-0x0000000000E60000-0x0000000000E75000-memory.dmp

Filesize
84KB

Download