plugx | 264f0a6d47f8c4578be602be1ea01dd634eace574afd7d44d854431721ffcabf

Analysis

max time kernel
152s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
16-06-2022 08:55

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General

Target

264f0a6d47f8c4578be602be1ea01dd634eace574afd7d44d854431721ffcabf.dll
Size

381KB
MD5

b17b80898eedfe9d51ac5f8da1b55a08
SHA1

1227c764f46482f5e30e5a53433f45cb1a7eabdb
SHA256

264f0a6d47f8c4578be602be1ea01dd634eace574afd7d44d854431721ffcabf
SHA512

e5afaf0e885efaf44d391bc63c46d97611af1119f5979f0f06ae109afe042af91944cdbd49ed6c84069f262ee8a5882d2450b1fcd929c6b61714665472192750

Score

10^/10

plugx suricata trojan

Malware Config

Signatures

Detects PlugX Payload 9 IoCs

resource	yara_rule
behavioral2/memory/4644-137-0x0000000002700000-0x000000000272E000-memory.dmp	family_plugx
behavioral2/memory/4904-148-0x00000000028B0000-0x00000000028DE000-memory.dmp	family_plugx
behavioral2/memory/3868-149-0x0000000001110000-0x000000000113E000-memory.dmp	family_plugx
behavioral2/memory/4044-150-0x0000000001270000-0x000000000129E000-memory.dmp	family_plugx
behavioral2/memory/3868-151-0x0000000001110000-0x000000000113E000-memory.dmp	family_plugx
behavioral2/memory/4904-152-0x00000000028B0000-0x00000000028DE000-memory.dmp	family_plugx
behavioral2/memory/2356-154-0x0000000002AB0000-0x0000000002ADE000-memory.dmp	family_plugx
behavioral2/memory/4044-155-0x0000000001270000-0x000000000129E000-memory.dmp	family_plugx
behavioral2/memory/2356-156-0x0000000002AB0000-0x0000000002ADE000-memory.dmp	family_plugx

PlugX
PlugX is a RAT (Remote Access Trojan) that has been around since 2008.
trojan plugx
suricata: ET MALWARE PlugX CnC Beacon
suricata: ET MALWARE PlugX CnC Beacon
suricata
suricata: ET MALWARE PlugX/Destory HTTP traffic
suricata: ET MALWARE PlugX/Destory HTTP traffic
suricata
suricata: ET MALWARE Possible PlugX Common Header Struct
suricata: ET MALWARE Possible PlugX Common Header Struct
suricata
suricata: ET MALWARE UPDATE Protocol Trojan Communication detected on http ports 2
suricata: ET MALWARE UPDATE Protocol Trojan Communication detected on http ports 2
suricata

Blocklisted process makes network request 3 IoCs

flow	pid	Process
27	2356	msiexec.exe
35	2356	msiexec.exe
36	2356	msiexec.exe

Executes dropped EXE 3 IoCs

pid	Process
4644	ktmhelp.exe
4904	ktmhelp.exe
3868	ktmhelp.exe

Loads dropped DLL 3 IoCs

pid	Process
4644	ktmhelp.exe
4904	ktmhelp.exe
3868	ktmhelp.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	dllhost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	dllhost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	dllhost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	dllhost.exe

Drops file in Program Files directory 7 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\Google\update.log	ktmhelp.exe
File opened for modification	C:\Program Files (x86)\Common Files\Google\ktmhelp.exe	ktmhelp.exe
File created	C:\Program Files (x86)\Common Files\Google\ktmhelp.exe	ktmhelp.exe
File opened for modification	C:\Program Files (x86)\Common Files\Google\roboform.dll	ktmhelp.exe
File created	C:\Program Files (x86)\Common Files\Google\roboform.dll	ktmhelp.exe
File opened for modification	C:\Program Files (x86)\Common Files\Google	ktmhelp.exe
File opened for modification	C:\Program Files (x86)\Common Files\Google\update.log	ktmhelp.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHZ	dllhost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\CENTRALPROCESSOR\0	dllhost.exe

Modifies data under HKEY_USERS 22 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent	ktmhelp.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	dllhost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	ktmhelp.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0	ktmhelp.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent\Post Platform	ktmhelp.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	dllhost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	dllhost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	dllhost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	dllhost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	ktmhelp.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	ktmhelp.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent\Post Platform	dllhost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent\Post Platform	dllhost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	dllhost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	dllhost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent\Post Platform	ktmhelp.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent\Post Platform	ktmhelp.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	ktmhelp.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent	ktmhelp.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	dllhost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent\Post Platform	ktmhelp.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	ktmhelp.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\CLASSES\FAST	ktmhelp.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\FAST\CLSID = 41003400420034003700440041003600350035004200370045003200310039000000	ktmhelp.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4044	dllhost.exe
2356	msiexec.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4644	ktmhelp.exe
4644	ktmhelp.exe
4644	ktmhelp.exe
4644	ktmhelp.exe
4044	dllhost.exe
4044	dllhost.exe
4904	ktmhelp.exe
4904	ktmhelp.exe
4044	dllhost.exe
4044	dllhost.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
4044	dllhost.exe
4044	dllhost.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
4044	dllhost.exe
4044	dllhost.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
4044	dllhost.exe
4044	dllhost.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
4044	dllhost.exe
4044	dllhost.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe
2356	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4044	dllhost.exe
2356	msiexec.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	4644	ktmhelp.exe
Token: SeTcbPrivilege	4644	ktmhelp.exe
Token: SeDebugPrivilege	4904	ktmhelp.exe
Token: SeTcbPrivilege	4904	ktmhelp.exe
Token: SeDebugPrivilege	3868	ktmhelp.exe
Token: SeTcbPrivilege	3868	ktmhelp.exe
Token: SeDebugPrivilege	4044	dllhost.exe
Token: SeTcbPrivilege	4044	dllhost.exe
Token: SeDebugPrivilege	2356	msiexec.exe
Token: SeTcbPrivilege	2356	msiexec.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 4032 wrote to memory of 2400	4032	rundll32.exe	82
PID 4032 wrote to memory of 2400	4032	rundll32.exe	82
PID 4032 wrote to memory of 2400	4032	rundll32.exe	82
PID 2400 wrote to memory of 4644	2400	rundll32.exe	83
PID 2400 wrote to memory of 4644	2400	rundll32.exe	83
PID 2400 wrote to memory of 4644	2400	rundll32.exe	83
PID 3868 wrote to memory of 4044	3868	ktmhelp.exe	92
PID 3868 wrote to memory of 4044	3868	ktmhelp.exe	92
PID 3868 wrote to memory of 4044	3868	ktmhelp.exe	92
PID 3868 wrote to memory of 4044	3868	ktmhelp.exe	92
PID 3868 wrote to memory of 4044	3868	ktmhelp.exe	92
PID 3868 wrote to memory of 4044	3868	ktmhelp.exe	92
PID 3868 wrote to memory of 4044	3868	ktmhelp.exe	92
PID 3868 wrote to memory of 4044	3868	ktmhelp.exe	92
PID 4044 wrote to memory of 2356	4044	dllhost.exe	93
PID 4044 wrote to memory of 2356	4044	dllhost.exe	93
PID 4044 wrote to memory of 2356	4044	dllhost.exe	93
PID 4044 wrote to memory of 2356	4044	dllhost.exe	93
PID 4044 wrote to memory of 2356	4044	dllhost.exe	93
PID 4044 wrote to memory of 2356	4044	dllhost.exe	93
PID 4044 wrote to memory of 2356	4044	dllhost.exe	93
PID 4044 wrote to memory of 2356	4044	dllhost.exe	93

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\264f0a6d47f8c4578be602be1ea01dd634eace574afd7d44d854431721ffcabf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4032
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\264f0a6d47f8c4578be602be1ea01dd634eace574afd7d44d854431721ffcabf.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2400
- - C:\Users\Admin\AppData\Local\Temp\OUT\ktmhelp.exe
    C:\Users\Admin\AppData\Local\Temp\OUT\ktmhelp.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4644

C:\Program Files (x86)\Common Files\Google\ktmhelp.exe
"C:\Program Files (x86)\Common Files\Google\ktmhelp.exe" 100 4644
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4904

C:\Program Files (x86)\Common Files\Google\ktmhelp.exe
"C:\Program Files (x86)\Common Files\Google\ktmhelp.exe" 200 0
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3868
- C:\Windows\SysWOW64\dllhost.exe
  C:\Windows\system32\dllhost.exe 201 0
  2⤵
  - Drops file in System32 directory
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4044
- - C:\Windows\SysWOW64\msiexec.exe
    C:\Windows\system32\msiexec.exe 209 4044
    3⤵
    - Blocklisted process makes network request
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:2356

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:\Program Files (x86)\Common Files\Google\RoboForm.DLL

Filesize
74KB

MD5
ee1887696c8445caaaad13bdb39d5dba

SHA1
bc09e8530d2497befaeacbf4d50022181ffc59cc

SHA256
2e1c2572e5e584ecfb00afcaa677c97b6c477c376da4f0169a72f8be7f9b426b

SHA512
94ce672d12e1de85deebd1362b7195a2365785689f00f63ba5240a3f81ba62409c973691713751468716fe8a502ca6dc8d7114da38d8b522d16f4ad027e013db

Download Submit
C:\Program Files (x86)\Common Files\Google\ktmhelp.exe

Filesize
96KB

MD5
0ba73a0db3913ba14be521f82c1b2c6c

SHA1
15920f9b5c190b70f927d18fa9d03793cb1f6332

SHA256
212a8859adb7a74beb51a9faac6df60edafb645f936d4b1af95d15265325d62f

SHA512
51472b924efea3d86607b17431829b3719ed7e1d153e09eb227b70f811d1db45880d0f195324afe3a418b62029a44c234011f3ad5e656c48e2920481a8fcc37a

Download Submit
C:\Program Files (x86)\Common Files\Google\ktmhelp.exe

Filesize
96KB

MD5
0ba73a0db3913ba14be521f82c1b2c6c

SHA1
15920f9b5c190b70f927d18fa9d03793cb1f6332

SHA256
212a8859adb7a74beb51a9faac6df60edafb645f936d4b1af95d15265325d62f

SHA512
51472b924efea3d86607b17431829b3719ed7e1d153e09eb227b70f811d1db45880d0f195324afe3a418b62029a44c234011f3ad5e656c48e2920481a8fcc37a

Download Submit
C:\Program Files (x86)\Common Files\Google\roboform.dll

Filesize
74KB

MD5
ee1887696c8445caaaad13bdb39d5dba

SHA1
bc09e8530d2497befaeacbf4d50022181ffc59cc

SHA256
2e1c2572e5e584ecfb00afcaa677c97b6c477c376da4f0169a72f8be7f9b426b

SHA512
94ce672d12e1de85deebd1362b7195a2365785689f00f63ba5240a3f81ba62409c973691713751468716fe8a502ca6dc8d7114da38d8b522d16f4ad027e013db

Download Submit
C:\Program Files (x86)\Common Files\Google\roboform.dll

Filesize
74KB

MD5
ee1887696c8445caaaad13bdb39d5dba

SHA1
bc09e8530d2497befaeacbf4d50022181ffc59cc

SHA256
2e1c2572e5e584ecfb00afcaa677c97b6c477c376da4f0169a72f8be7f9b426b

SHA512
94ce672d12e1de85deebd1362b7195a2365785689f00f63ba5240a3f81ba62409c973691713751468716fe8a502ca6dc8d7114da38d8b522d16f4ad027e013db

Download Submit
C:\Program Files (x86)\Common Files\Google\update.log

Filesize
115KB

MD5
fc34d2fd567e8d1815d8d67cbbb4b32e

SHA1
0e83054a19f683ccea20b6ee48726030ef550b36

SHA256
59ac056c4174c3065b8ca01ebcbb8b4c0c93b0a4f2f16de75de89865915bd6d8

SHA512
f968bebfd09bbba63480ae1c84fe77dce8890d447d211fbfa54ab61933ff75ed79a18088d3835888061dbe7c154d435ecb1ef5d881cc3d9c097b71475bf37257

Download Submit
C:\Users\Admin\AppData\Local\Temp\OUT\RoboForm.DLL

Filesize
74KB

MD5
ee1887696c8445caaaad13bdb39d5dba

SHA1
bc09e8530d2497befaeacbf4d50022181ffc59cc

SHA256
2e1c2572e5e584ecfb00afcaa677c97b6c477c376da4f0169a72f8be7f9b426b

SHA512
94ce672d12e1de85deebd1362b7195a2365785689f00f63ba5240a3f81ba62409c973691713751468716fe8a502ca6dc8d7114da38d8b522d16f4ad027e013db

Download Submit
C:\Users\Admin\AppData\Local\Temp\OUT\ktmhelp.exe

Filesize
96KB

MD5
0ba73a0db3913ba14be521f82c1b2c6c

SHA1
15920f9b5c190b70f927d18fa9d03793cb1f6332

SHA256
212a8859adb7a74beb51a9faac6df60edafb645f936d4b1af95d15265325d62f

SHA512
51472b924efea3d86607b17431829b3719ed7e1d153e09eb227b70f811d1db45880d0f195324afe3a418b62029a44c234011f3ad5e656c48e2920481a8fcc37a

Download Submit
C:\Users\Admin\AppData\Local\Temp\OUT\ktmhelp.exe

Filesize
96KB

MD5
0ba73a0db3913ba14be521f82c1b2c6c

SHA1
15920f9b5c190b70f927d18fa9d03793cb1f6332

SHA256
212a8859adb7a74beb51a9faac6df60edafb645f936d4b1af95d15265325d62f

SHA512
51472b924efea3d86607b17431829b3719ed7e1d153e09eb227b70f811d1db45880d0f195324afe3a418b62029a44c234011f3ad5e656c48e2920481a8fcc37a

Download Submit
C:\Users\Admin\AppData\Local\Temp\OUT\roboform.dll

Filesize
74KB

MD5
ee1887696c8445caaaad13bdb39d5dba

SHA1
bc09e8530d2497befaeacbf4d50022181ffc59cc

SHA256
2e1c2572e5e584ecfb00afcaa677c97b6c477c376da4f0169a72f8be7f9b426b

SHA512
94ce672d12e1de85deebd1362b7195a2365785689f00f63ba5240a3f81ba62409c973691713751468716fe8a502ca6dc8d7114da38d8b522d16f4ad027e013db

Download Submit
C:\Users\Admin\AppData\Local\Temp\OUT\update.log

Filesize
115KB

MD5
fc34d2fd567e8d1815d8d67cbbb4b32e

SHA1
0e83054a19f683ccea20b6ee48726030ef550b36

SHA256
59ac056c4174c3065b8ca01ebcbb8b4c0c93b0a4f2f16de75de89865915bd6d8

SHA512
f968bebfd09bbba63480ae1c84fe77dce8890d447d211fbfa54ab61933ff75ed79a18088d3835888061dbe7c154d435ecb1ef5d881cc3d9c097b71475bf37257

Download Submit
memory/2356-154-0x0000000002AB0000-0x0000000002ADE000-memory.dmp

Filesize
184KB

Download
memory/2356-156-0x0000000002AB0000-0x0000000002ADE000-memory.dmp

Filesize
184KB

Download
memory/3868-149-0x0000000001110000-0x000000000113E000-memory.dmp

Filesize
184KB

Download
memory/3868-151-0x0000000001110000-0x000000000113E000-memory.dmp

Filesize
184KB

Download
memory/4044-150-0x0000000001270000-0x000000000129E000-memory.dmp

Filesize
184KB

Download
memory/4044-155-0x0000000001270000-0x000000000129E000-memory.dmp

Filesize
184KB

Download
memory/4644-137-0x0000000002700000-0x000000000272E000-memory.dmp

Filesize
184KB

Download
memory/4644-136-0x00000000025B0000-0x00000000026B0000-memory.dmp

Filesize
1024KB

Download
memory/4904-148-0x00000000028B0000-0x00000000028DE000-memory.dmp

Filesize
184KB

Download
memory/4904-152-0x00000000028B0000-0x00000000028DE000-memory.dmp

Filesize
184KB

Download