plugx | 3f5c2045c0cdaab917b612ac86706d904912415c2485ec5801edf74a3a485154

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12-09-2024 08:24

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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 20 IoCs

resource	yara_rule
behavioral2/memory/2448-1-0x0000000002340000-0x0000000002371000-memory.dmp	family_plugx
behavioral2/memory/3136-21-0x0000000000EE0000-0x0000000000F11000-memory.dmp	family_plugx
behavioral2/memory/3136-20-0x0000000000EE0000-0x0000000000F11000-memory.dmp	family_plugx
behavioral2/memory/4180-24-0x0000000001540000-0x0000000001571000-memory.dmp	family_plugx
behavioral2/memory/3136-25-0x0000000000EE0000-0x0000000000F11000-memory.dmp	family_plugx
behavioral2/memory/2448-29-0x0000000002340000-0x0000000002371000-memory.dmp	family_plugx
behavioral2/memory/4180-23-0x0000000001540000-0x0000000001571000-memory.dmp	family_plugx
behavioral2/memory/4180-30-0x0000000001540000-0x0000000001571000-memory.dmp	family_plugx
behavioral2/memory/4180-42-0x0000000001540000-0x0000000001571000-memory.dmp	family_plugx
behavioral2/memory/4180-41-0x0000000001540000-0x0000000001571000-memory.dmp	family_plugx
behavioral2/memory/4180-43-0x0000000001540000-0x0000000001571000-memory.dmp	family_plugx
behavioral2/memory/4180-47-0x0000000001540000-0x0000000001571000-memory.dmp	family_plugx
behavioral2/memory/4180-48-0x0000000001540000-0x0000000001571000-memory.dmp	family_plugx
behavioral2/memory/3116-53-0x0000000002490000-0x00000000024C1000-memory.dmp	family_plugx
behavioral2/memory/3116-58-0x0000000002490000-0x00000000024C1000-memory.dmp	family_plugx
behavioral2/memory/3116-59-0x0000000002490000-0x00000000024C1000-memory.dmp	family_plugx
behavioral2/memory/4180-60-0x0000000001540000-0x0000000001571000-memory.dmp	family_plugx
behavioral2/memory/3116-61-0x0000000002490000-0x00000000024C1000-memory.dmp	family_plugx
behavioral2/memory/4180-64-0x0000000001540000-0x0000000001571000-memory.dmp	family_plugx
behavioral2/memory/4180-65-0x0000000001540000-0x0000000001571000-memory.dmp	family_plugx

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

Deletes itself 1 IoCs

pid	Process
4180	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3136	RsTray.exe

Loads dropped DLL 1 IoCs

pid	Process
3136	RsTray.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	svchost.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 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 = 43004300310031004600360034003600320038003400380032003000340037000000	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4180	svchost.exe
4180	svchost.exe
4180	svchost.exe
4180	svchost.exe
4180	svchost.exe
4180	svchost.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
4180	svchost.exe
4180	svchost.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
4180	svchost.exe
4180	svchost.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
4180	svchost.exe
4180	svchost.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
4180	svchost.exe
4180	svchost.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe
3116	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4180	svchost.exe
3116	msiexec.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2448	RsTray.exe
Token: SeTcbPrivilege	2448	RsTray.exe
Token: SeDebugPrivilege	3136	RsTray.exe
Token: SeTcbPrivilege	3136	RsTray.exe
Token: SeDebugPrivilege	4180	svchost.exe
Token: SeTcbPrivilege	4180	svchost.exe
Token: SeDebugPrivilege	3116	msiexec.exe
Token: SeTcbPrivilege	3116	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3136 wrote to memory of 4180	3136	RsTray.exe	84
PID 3136 wrote to memory of 4180	3136	RsTray.exe	84
PID 3136 wrote to memory of 4180	3136	RsTray.exe	84
PID 3136 wrote to memory of 4180	3136	RsTray.exe	84
PID 3136 wrote to memory of 4180	3136	RsTray.exe	84
PID 3136 wrote to memory of 4180	3136	RsTray.exe	84
PID 3136 wrote to memory of 4180	3136	RsTray.exe	84
PID 3136 wrote to memory of 4180	3136	RsTray.exe	84
PID 4180 wrote to memory of 3116	4180	svchost.exe	93
PID 4180 wrote to memory of 3116	4180	svchost.exe	93
PID 4180 wrote to memory of 3116	4180	svchost.exe	93
PID 4180 wrote to memory of 3116	4180	svchost.exe	93
PID 4180 wrote to memory of 3116	4180	svchost.exe	93
PID 4180 wrote to memory of 3116	4180	svchost.exe	93
PID 4180 wrote to memory of 3116	4180	svchost.exe	93
PID 4180 wrote to memory of 3116	4180	svchost.exe	93

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:2448

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:3136
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\svchost.exe 201 0
  2⤵
  - Deletes itself
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4180
- - C:\Windows\SysWOW64\msiexec.exe
    C:\Windows\system32\msiexec.exe 209 4180
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:3116

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
1KB

MD5
f249a0a57abd838a3512fc5f182b60ee

SHA1
1e8abaecad375c7264b8c71a52a4a9608897b3a4

SHA256
7039a70a29c2ff832f81a23239d96cee3115cbacfd45158eaa45696a16afa14c

SHA512
f1756ee357c50fdaa425443388824d6e3c308c23149bfdc585ef810166fde0c03a40d779f26144dae3621c68296fed887e2c25bb88f0323d5505861d770e243c

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

Filesize
1KB

MD5
b28f61c42a1c966487a6ccebeaab42f3

SHA1
29ddf01290950ba03c52abbb54da3db1c18da77d

SHA256
64ea9781fe209fa18e2a6cadf01303f409378df539011e957850d8854d3f8946

SHA512
bf981454567fba24970a6f92519daadb579ac6deb3bb0b81b11d4e0be02235ac7976467b747dd2043a21d06a1de5d6056674da566ac29663c3493e42d536337c

Download Submit
memory/2448-0-0x0000000002390000-0x0000000002490000-memory.dmp

Filesize
1024KB

Download
memory/2448-29-0x0000000002340000-0x0000000002371000-memory.dmp

Filesize
196KB

Download
memory/2448-1-0x0000000002340000-0x0000000002371000-memory.dmp

Filesize
196KB

Download
memory/3116-51-0x00000000008D0000-0x00000000008D1000-memory.dmp

Filesize
4KB

Download
memory/3116-61-0x0000000002490000-0x00000000024C1000-memory.dmp

Filesize
196KB

Download
memory/3116-57-0x0000000000860000-0x0000000000861000-memory.dmp

Filesize
4KB

Download
memory/3116-59-0x0000000002490000-0x00000000024C1000-memory.dmp

Filesize
196KB

Download
memory/3116-58-0x0000000002490000-0x00000000024C1000-memory.dmp

Filesize
196KB

Download
memory/3116-53-0x0000000002490000-0x00000000024C1000-memory.dmp

Filesize
196KB

Download
memory/3136-21-0x0000000000EE0000-0x0000000000F11000-memory.dmp

Filesize
196KB

Download
memory/3136-20-0x0000000000EE0000-0x0000000000F11000-memory.dmp

Filesize
196KB

Download
memory/3136-25-0x0000000000EE0000-0x0000000000F11000-memory.dmp

Filesize
196KB

Download
memory/4180-22-0x0000000000D20000-0x0000000000D21000-memory.dmp

Filesize
4KB

Download
memory/4180-48-0x0000000001540000-0x0000000001571000-memory.dmp

Filesize
196KB

Download
memory/4180-47-0x0000000001540000-0x0000000001571000-memory.dmp

Filesize
196KB

Download
memory/4180-40-0x0000000000D20000-0x0000000000D21000-memory.dmp

Filesize
4KB

Download
memory/4180-43-0x0000000001540000-0x0000000001571000-memory.dmp

Filesize
196KB

Download
memory/4180-41-0x0000000001540000-0x0000000001571000-memory.dmp

Filesize
196KB

Download
memory/4180-42-0x0000000001540000-0x0000000001571000-memory.dmp

Filesize
196KB

Download
memory/4180-30-0x0000000001540000-0x0000000001571000-memory.dmp

Filesize
196KB

Download
memory/4180-60-0x0000000001540000-0x0000000001571000-memory.dmp

Filesize
196KB

Download
memory/4180-23-0x0000000001540000-0x0000000001571000-memory.dmp

Filesize
196KB

Download
memory/4180-64-0x0000000001540000-0x0000000001571000-memory.dmp

Filesize
196KB

Download
memory/4180-24-0x0000000001540000-0x0000000001571000-memory.dmp

Filesize
196KB

Download
memory/4180-65-0x0000000001540000-0x0000000001571000-memory.dmp

Filesize
196KB

Download