plugx | f949b78b040cbfc95aafb50ef30ac3e8c16771c6b926b6f8f1efe44a1f437d51

General

Target

AcroRd32DQe.bin.exe
Size

293KB
MD5

187a89cf24890c3af628219d0d9ae881
SHA1

5b1ba0821ca5461ced123cc646dd5823504075f5
SHA256

f949b78b040cbfc95aafb50ef30ac3e8c16771c6b926b6f8f1efe44a1f437d51
SHA512

aaf9203cda730018988f38c4734b144d0f83e61e3a342c6c26f3668b2e6860d95558da39bc11d3a7d4683f74059e144fc0c98ebe05acde501012caf3609263ef

Score

10^/10

plugx persistence trojan

Malware Config

Extracted

Family

plugx

C2

45.134.83.41:443

45.134.83.41:8080

45.134.83.41:80

Mutex

jqcdxvOfUAlRGUCUknxZ

Attributes

folder
AcroRd32DQe

Signatures

PlugX
PlugX is a RAT (Remote Access Trojan) that has been around since 2008.
trojan plugx

Executes dropped EXE 3 IoCs

pid	Process
972	AcroRd32.exe
2180	AcroRd32.exe
2160	acrotrays.exe

Loads dropped DLL 5 IoCs

pid	Process
972	AcroRd32.exe
972	AcroRd32.exe
2180	AcroRd32.exe
2180	AcroRd32.exe
2160	acrotrays.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	AcroRd32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AcroRd32DQe = "\"C:\\ProgramData\\AcroRd32DQe\\AcroRd32.exe\" 913"	AcroRd32.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	AcroRd32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\AcroRd32DQe = "\"C:\\ProgramData\\AcroRd32DQe\\AcroRd32.exe\" 913"	AcroRd32.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\D:	AcroRd32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\CLASSES\ms-pu	AcroRd32.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\ms-pu	AcroRd32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\ms-pu\CLSID = 31004300380030003500330038003800450039004500340038003300340036000000	AcroRd32.exe
Key created	\REGISTRY\MACHINE\Software\CLASSES\ms-pu	AcroRd32.exe
Key created	\REGISTRY\MACHINE\Software\CLASSES\ms-pu	acrotrays.exe
Key created	\REGISTRY\MACHINE\Software\CLASSES\ms-pu\PROXY	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
2180	AcroRd32.exe
2180	AcroRd32.exe
2180	AcroRd32.exe
2180	AcroRd32.exe
2180	AcroRd32.exe
2180	AcroRd32.exe
2180	AcroRd32.exe
2180	AcroRd32.exe
2180	AcroRd32.exe
2180	AcroRd32.exe
2180	AcroRd32.exe
2180	AcroRd32.exe
2160	acrotrays.exe
2160	acrotrays.exe
2160	acrotrays.exe
2160	acrotrays.exe
2160	acrotrays.exe
2160	acrotrays.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2180	AcroRd32.exe
Token: SeDebugPrivilege	2180	AcroRd32.exe
Token: SeTcbPrivilege	2180	AcroRd32.exe
Token: SeDebugPrivilege	2160	acrotrays.exe
Token: SeDebugPrivilege	2160	acrotrays.exe
Token: SeDebugPrivilege	2160	acrotrays.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
804	AcroRd32DQe.bin.exe
804	AcroRd32DQe.bin.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 804 wrote to memory of 972	804	AcroRd32DQe.bin.exe	78
PID 804 wrote to memory of 972	804	AcroRd32DQe.bin.exe	78
PID 804 wrote to memory of 972	804	AcroRd32DQe.bin.exe	78
PID 972 wrote to memory of 2180	972	AcroRd32.exe	79
PID 972 wrote to memory of 2180	972	AcroRd32.exe	79
PID 972 wrote to memory of 2180	972	AcroRd32.exe	79
PID 2180 wrote to memory of 2160	2180	AcroRd32.exe	80
PID 2180 wrote to memory of 2160	2180	AcroRd32.exe	80
PID 2180 wrote to memory of 2160	2180	AcroRd32.exe	80

C:\Users\Admin\AppData\Local\Temp\AcroRd32DQe.bin.exe
"C:\Users\Admin\AppData\Local\Temp\AcroRd32DQe.bin.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:804
- C:\Users\Admin\AppData\Local\Temp\AcroRd32.exe
  "C:\Users\Admin\AppData\Local\Temp\AcroRd32.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:972
- - C:\ProgramData\AcroRd32DQe\AcroRd32.exe
    C:\ProgramData\AcroRd32DQe\AcroRd32.exe 913
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Enumerates connected drives
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2180
  - - C:\ProgramData\back\acrotrays.exe
      C:\ProgramData\back\acrotrays.exe -d AAA
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Modifies registry class
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2160

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/972-122-0x00000000026D0000-0x0000000006309000-memory.dmp

Filesize
60.2MB

Download
memory/972-123-0x00000000025D0000-0x00000000026D0000-memory.dmp

Filesize
1024KB

Download
memory/972-120-0x0000000000DE1000-0x0000000000DE3000-memory.dmp

Filesize
8KB

Download
memory/2160-139-0x00000000021F0000-0x0000000005E29000-memory.dmp

Filesize
60.2MB

Download
memory/2180-130-0x0000000000C81000-0x0000000000C83000-memory.dmp

Filesize
8KB

Download
memory/2180-132-0x0000000002A30000-0x0000000006669000-memory.dmp

Filesize
60.2MB

Download

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Analysis

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