plugx | 3f5c2045c0cdaab917b612ac86706d904912415c2485ec5801edf74a3a485154

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-12-2024 19:15

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General

Target

PS/RsTray.exe
Size

174KB
MD5

d65adc7ad95e88fab486707b8c228f17
SHA1

dfa0589b58a469e34695a22313d184e5352a3282
SHA256

a3674fef407c354e911a8a6c7d4b991802c47cf6409d6dc32dc84be6312159e2
SHA512

3c9114610dfc107adec6a6220356607c737499866eba965985bb1f6b9aedbfae529a5432abb8307ce0653580fab9c2580c66d96ef4cdb4319a0fde5ad3c3ac01
SSDEEP

3072:wq1/mmpPCL8OZwevvCRmvUGmeU1hbFZJslQLRzMaZ:wUmqCL8Oj3XZm5jNLRzVZ

Score

10^/10

plugx discovery trojan

Malware Config

Signatures

Detects PlugX payload 21 IoCs

resource	yara_rule
behavioral1/memory/828-1-0x00000000002D0000-0x0000000000301000-memory.dmp	family_plugx
behavioral1/memory/1592-19-0x00000000002A0000-0x00000000002D1000-memory.dmp	family_plugx
behavioral1/memory/1592-28-0x00000000002A0000-0x00000000002D1000-memory.dmp	family_plugx
behavioral1/memory/2692-26-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/828-31-0x00000000002D0000-0x0000000000301000-memory.dmp	family_plugx
behavioral1/memory/2692-33-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/2692-49-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/2692-46-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/2692-45-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/2692-44-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/2692-50-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/2692-51-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/2692-52-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/2604-63-0x00000000002C0000-0x00000000002F1000-memory.dmp	family_plugx
behavioral1/memory/2604-70-0x00000000002C0000-0x00000000002F1000-memory.dmp	family_plugx
behavioral1/memory/2604-69-0x00000000002C0000-0x00000000002F1000-memory.dmp	family_plugx
behavioral1/memory/2692-71-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/2604-72-0x00000000002C0000-0x00000000002F1000-memory.dmp	family_plugx
behavioral1/memory/2692-73-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/2692-77-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx
behavioral1/memory/2692-82-0x00000000001D0000-0x0000000000201000-memory.dmp	family_plugx

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

Deletes itself 1 IoCs

pid	Process
2692	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1592	RsTray.exe

Loads dropped DLL 1 IoCs

pid	Process
1592	RsTray.exe

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RsTray.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RsTray.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Modifies data under HKEY_USERS 12 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFE8583E-254A-4D24-B1BA-5A29A6D48CCF}	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFE8583E-254A-4D24-B1BA-5A29A6D48CCF}\WpadDecisionReason = "1"	svchost.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFE8583E-254A-4D24-B1BA-5A29A6D48CCF}\WpadDecisionTime = b02ff623384bdb01	svchost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFE8583E-254A-4D24-B1BA-5A29A6D48CCF}\WpadNetworkName = "Network 3"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-45-86-c8-2d-61\WpadDecisionReason = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-45-86-c8-2d-61\WpadDecision = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-45-86-c8-2d-61\WpadDetectedUrl	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFE8583E-254A-4D24-B1BA-5A29A6D48CCF}\WpadDecision = "0"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-45-86-c8-2d-61	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFE8583E-254A-4D24-B1BA-5A29A6D48CCF}\ae-45-86-c8-2d-61	svchost.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-45-86-c8-2d-61\WpadDecisionTime = b02ff623384bdb01	svchost.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\CLASSES\FAST	svchost.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\FAST\CLSID = 32004100410036004400360044004600340043003100370037004100430035000000	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2692	svchost.exe
2692	svchost.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2692	svchost.exe
2692	svchost.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2692	svchost.exe
2692	svchost.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2692	svchost.exe
2692	svchost.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe
2604	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2692	svchost.exe
2604	msiexec.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	828	RsTray.exe
Token: SeTcbPrivilege	828	RsTray.exe
Token: SeDebugPrivilege	1592	RsTray.exe
Token: SeTcbPrivilege	1592	RsTray.exe
Token: SeDebugPrivilege	2692	svchost.exe
Token: SeTcbPrivilege	2692	svchost.exe
Token: SeDebugPrivilege	2604	msiexec.exe
Token: SeTcbPrivilege	2604	msiexec.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1592 wrote to memory of 2692	1592	RsTray.exe	31
PID 1592 wrote to memory of 2692	1592	RsTray.exe	31
PID 1592 wrote to memory of 2692	1592	RsTray.exe	31
PID 1592 wrote to memory of 2692	1592	RsTray.exe	31
PID 1592 wrote to memory of 2692	1592	RsTray.exe	31
PID 1592 wrote to memory of 2692	1592	RsTray.exe	31
PID 1592 wrote to memory of 2692	1592	RsTray.exe	31
PID 1592 wrote to memory of 2692	1592	RsTray.exe	31
PID 1592 wrote to memory of 2692	1592	RsTray.exe	31
PID 2692 wrote to memory of 2604	2692	svchost.exe	32
PID 2692 wrote to memory of 2604	2692	svchost.exe	32
PID 2692 wrote to memory of 2604	2692	svchost.exe	32
PID 2692 wrote to memory of 2604	2692	svchost.exe	32
PID 2692 wrote to memory of 2604	2692	svchost.exe	32
PID 2692 wrote to memory of 2604	2692	svchost.exe	32
PID 2692 wrote to memory of 2604	2692	svchost.exe	32
PID 2692 wrote to memory of 2604	2692	svchost.exe	32
PID 2692 wrote to memory of 2604	2692	svchost.exe	32
PID 2692 wrote to memory of 2604	2692	svchost.exe	32
PID 2692 wrote to memory of 2604	2692	svchost.exe	32
PID 2692 wrote to memory of 2604	2692	svchost.exe	32

C:\Users\Admin\AppData\Local\Temp\PS\RsTray.exe
"C:\Users\Admin\AppData\Local\Temp\PS\RsTray.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:828

C:\ProgramData\PS\RsTray.exe
C:\ProgramData\PS\RsTray.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1592
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\svchost.exe 201 0
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2692
- - C:\Windows\SysWOW64\msiexec.exe
    C:\Windows\system32\msiexec.exe 209 2692
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:2604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\PS\RsTray.exe

Filesize
174KB

MD5
d65adc7ad95e88fab486707b8c228f17

SHA1
dfa0589b58a469e34695a22313d184e5352a3282

SHA256
a3674fef407c354e911a8a6c7d4b991802c47cf6409d6dc32dc84be6312159e2

SHA512
3c9114610dfc107adec6a6220356607c737499866eba965985bb1f6b9aedbfae529a5432abb8307ce0653580fab9c2580c66d96ef4cdb4319a0fde5ad3c3ac01

Download Submit
C:\ProgramData\PS\comserv.dll

Filesize
2KB

MD5
6d54b4f07a1b92bd6fafe7160b2c887c

SHA1
6bf4a36e729a2c4156b1280db97252ba8ea7d9b4

SHA256
653fe0ab7b634e50ba09f962c6357bcf76ce633768aa41dd01d1a93ef83a0a54

SHA512
32c57ca7ce437fc7712948a6f30733112830ff570d89ca903e5a5bdec43277a19a453df8c027e0835ad1dff2f7927cf973e33efa1847ed608cb6eb534d8163a3

Download Submit
C:\ProgramData\PS\comserv.dll.url

Filesize
122KB

MD5
fe14ef97d52c1c4f4764c36b76f18340

SHA1
60a931c6607ffe7dabdce33151f7d217b7581175

SHA256
d8c68c81908ca0b31a773cf78bc59b9d886ba72177b2b4f5a1d9ea46b95ce05e

SHA512
390366a82817d8e841084744cd879bd7be6ce1dff85e26e9fe4739b709c17718c4e836f2f543c1d84f47096230e2d9dbc6dab6c597acc8ae802c43b1d4ae7f0d

Download Submit
C:\ProgramData\SxS\bug.log

Filesize
980B

MD5
2f647cdf8616951565a08d8599fb5e8a

SHA1
eaefa863d398b81e3be4c5ac532f779a2a9984f0

SHA256
a971fdf29f69a2356c9617fb24efcfd5762a1c9b39a83899aee2722cbbc16f10

SHA512
d646f974960ad039770d3dfceea99e144e9eb471800b7ec5ac18e698e9e11a2a3fb548caf103766ba1a36a5781f5dc43483d3399aa58c371e29c6847b33a18c8

Download Submit
C:\ProgramData\SxS\bug.log

Filesize
1KB

MD5
a0efa7a0dd3849422182f41b5abe0f7e

SHA1
dbc7753b6deba69fe3b2e94c1d171b6563f4cd63

SHA256
348e14cc5a09aba2516a3cb74241d0e05b9a572996b759579f1025e1cc18627c

SHA512
70570cdc45270946ac3f0e549636e4a02258e366f01747dae7dfef77f8d7cf9e32da0d17c516e5fc668718e950bb4d85a39cbfb3a6b5c442b6bec62033be32fe

Download Submit
memory/828-1-0x00000000002D0000-0x0000000000301000-memory.dmp

Filesize
196KB

Download
memory/828-31-0x00000000002D0000-0x0000000000301000-memory.dmp

Filesize
196KB

Download
memory/828-0-0x0000000001E90000-0x0000000001F90000-memory.dmp

Filesize
1024KB

Download
memory/1592-19-0x00000000002A0000-0x00000000002D1000-memory.dmp

Filesize
196KB

Download
memory/1592-28-0x00000000002A0000-0x00000000002D1000-memory.dmp

Filesize
196KB

Download
memory/2604-72-0x00000000002C0000-0x00000000002F1000-memory.dmp

Filesize
196KB

Download
memory/2604-62-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/2604-69-0x00000000002C0000-0x00000000002F1000-memory.dmp

Filesize
196KB

Download
memory/2604-70-0x00000000002C0000-0x00000000002F1000-memory.dmp

Filesize
196KB

Download
memory/2604-68-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/2604-63-0x00000000002C0000-0x00000000002F1000-memory.dmp

Filesize
196KB

Download
memory/2692-23-0x00000000000E0000-0x00000000000FD000-memory.dmp

Filesize
116KB

Download
memory/2692-33-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-43-0x0000000000070000-0x0000000000071000-memory.dmp

Filesize
4KB

Download
memory/2692-50-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-51-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-52-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-45-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-46-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-49-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-44-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-26-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-25-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/2692-71-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-24-0x0000000000100000-0x0000000000102000-memory.dmp

Filesize
8KB

Download
memory/2692-73-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-77-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download
memory/2692-21-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/2692-82-0x00000000001D0000-0x0000000000201000-memory.dmp

Filesize
196KB

Download