plugx | 8bd9dfcfd59b0e2073caf8c0fc8740a01f8c7eabb6239a9b714d3b41a3793b95

Analysis

max time kernel
4294128s
max time network
68s
platform
windows7_x64
resource
win7-20220311-en
submitted
29-03-2022 08:17

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General

Target

8bd9d.exe
Size

133KB
MD5

99ee1e21a34b0536b120d4a6977fd252
SHA1

24c50b507febd6e2b81154d3d80401dd9207e3e1
SHA256

8bd9dfcfd59b0e2073caf8c0fc8740a01f8c7eabb6239a9b714d3b41a3793b95
SHA512

03cafd628d19cda98db021fb009500105906617ab414c9ba6087c693cacdb36159d1973d21af2b275da136dbb10157f97c243ca1ae7ea198ae99d74427e26408

Score

10^/10

plugx trojan

Malware Config

Signatures

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

PlugX Rat Payload 5 IoCs

resource	yara_rule
behavioral1/memory/1956-66-0x00000000003C0000-0x00000000003EE000-memory.dmp	PlugX
behavioral1/memory/536-80-0x00000000002C0000-0x00000000002EE000-memory.dmp	PlugX
behavioral1/memory/580-81-0x0000000000210000-0x000000000023E000-memory.dmp	PlugX
behavioral1/memory/632-82-0x00000000003D0000-0x00000000003FE000-memory.dmp	PlugX
behavioral1/memory/1180-91-0x0000000000810000-0x000000000083E000-memory.dmp	PlugX

Executes dropped EXE 1 IoCs

pid	Process
536	vcredist_x64.exe

Deletes itself 1 IoCs

pid	Process
580	svchost.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\CENTRALPROCESSOR\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CENTRALPROCESSOR\0\~MHZ	svchost.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\CLASSES\FAST	8bd9d.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\FAST\CLSID = 45004100430032004500460043004400310033003400340031004400370039000000	8bd9d.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
536	vcredist_x64.exe
632	svchost.exe
1180	msiexec.exe
1180	msiexec.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe
632	svchost.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	1956	8bd9d.exe
Token: SeTcbPrivilege	1956	8bd9d.exe
Token: SeDebugPrivilege	580	svchost.exe
Token: SeTcbPrivilege	580	svchost.exe
Token: SeDebugPrivilege	536	vcredist_x64.exe
Token: SeTcbPrivilege	536	vcredist_x64.exe
Token: SeDebugPrivilege	632	svchost.exe
Token: SeTcbPrivilege	632	svchost.exe
Token: SeDebugPrivilege	1180	msiexec.exe
Token: SeTcbPrivilege	1180	msiexec.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1956 wrote to memory of 580	1956	8bd9d.exe	27
PID 1956 wrote to memory of 580	1956	8bd9d.exe	27
PID 1956 wrote to memory of 580	1956	8bd9d.exe	27
PID 1956 wrote to memory of 580	1956	8bd9d.exe	27
PID 1956 wrote to memory of 580	1956	8bd9d.exe	27
PID 1956 wrote to memory of 580	1956	8bd9d.exe	27
PID 1956 wrote to memory of 580	1956	8bd9d.exe	27
PID 1956 wrote to memory of 580	1956	8bd9d.exe	27
PID 1956 wrote to memory of 580	1956	8bd9d.exe	27
PID 536 wrote to memory of 632	536	vcredist_x64.exe	29
PID 536 wrote to memory of 632	536	vcredist_x64.exe	29
PID 536 wrote to memory of 632	536	vcredist_x64.exe	29
PID 536 wrote to memory of 632	536	vcredist_x64.exe	29
PID 536 wrote to memory of 632	536	vcredist_x64.exe	29
PID 536 wrote to memory of 632	536	vcredist_x64.exe	29
PID 536 wrote to memory of 632	536	vcredist_x64.exe	29
PID 536 wrote to memory of 632	536	vcredist_x64.exe	29
PID 536 wrote to memory of 632	536	vcredist_x64.exe	29
PID 632 wrote to memory of 1180	632	svchost.exe	30
PID 632 wrote to memory of 1180	632	svchost.exe	30
PID 632 wrote to memory of 1180	632	svchost.exe	30
PID 632 wrote to memory of 1180	632	svchost.exe	30
PID 632 wrote to memory of 1180	632	svchost.exe	30
PID 632 wrote to memory of 1180	632	svchost.exe	30
PID 632 wrote to memory of 1180	632	svchost.exe	30
PID 632 wrote to memory of 1180	632	svchost.exe	30
PID 632 wrote to memory of 1180	632	svchost.exe	30
PID 632 wrote to memory of 1180	632	svchost.exe	30
PID 632 wrote to memory of 1180	632	svchost.exe	30
PID 632 wrote to memory of 1180	632	svchost.exe	30

C:\Users\Admin\AppData\Local\Temp\8bd9d.exe
"C:\Users\Admin\AppData\Local\Temp\8bd9d.exe"
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1956
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\svchost.exe 100 1956
  2⤵
  - Deletes itself
  - Suspicious use of AdjustPrivilegeToken
  PID:580

C:\ProgramData\Packages\vcredist_x64.exe
"C:\ProgramData\Packages\vcredist_x64.exe" 200 0
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:536
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\svchost.exe 201 0
  2⤵
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:632
- - C:\Windows\SysWOW64\msiexec.exe
    C:\Windows\system32\msiexec.exe 209 632 1
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1180

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Packages\vcredist_x64.exe

Filesize
133KB

MD5
99ee1e21a34b0536b120d4a6977fd252

SHA1
24c50b507febd6e2b81154d3d80401dd9207e3e1

SHA256
8bd9dfcfd59b0e2073caf8c0fc8740a01f8c7eabb6239a9b714d3b41a3793b95

SHA512
03cafd628d19cda98db021fb009500105906617ab414c9ba6087c693cacdb36159d1973d21af2b275da136dbb10157f97c243ca1ae7ea198ae99d74427e26408

Download Submit
memory/536-80-0x00000000002C0000-0x00000000002EE000-memory.dmp

Filesize
184KB

Download
memory/536-69-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/580-58-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/580-61-0x00000000000F0000-0x000000000010C000-memory.dmp

Filesize
112KB

Download
memory/580-81-0x0000000000210000-0x000000000023E000-memory.dmp

Filesize
184KB

Download
memory/632-82-0x00000000003D0000-0x00000000003FE000-memory.dmp

Filesize
184KB

Download
memory/1180-91-0x0000000000810000-0x000000000083E000-memory.dmp

Filesize
184KB

Download
memory/1956-54-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/1956-66-0x00000000003C0000-0x00000000003EE000-memory.dmp

Filesize
184KB

Download
memory/1956-57-0x0000000074F31000-0x0000000074F33000-memory.dmp

Filesize
8KB

Download
memory/1956-56-0x0000000000350000-0x000000000036D000-memory.dmp

Filesize
116KB

Download
memory/1956-55-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download