plugx | 6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92

Resubmissions

24-02-2022 11:15

220224-nck2fschd6 10

22-02-2022 08:29

220222-kdlgtsfgen 10

Analysis

max time kernel
150s
max time network
151s
platform
windows10_x64
resource
win10-20220223-en
submitted
24-02-2022 11:15

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General

Target

6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe
Size

267KB
MD5

b921f1f433015d3780e9c13ab245f2eb
SHA1

cbc30251bb9392dc0c47b2b1084273c0aa58a0dc
SHA256

6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92
SHA512

7eef07ca4bf6ba69e56f0dc6420d8af25a50a2aefcfdc72d5718238068076a2794e74282743132537c166ee38864e6bc85fc905e3cf1d98082b94fbb32f8e203

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 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3612-124-0x0000000000590000-0x00000000005B7000-memory.dmp	PlugX
behavioral2/memory/1356-125-0x0000000000550000-0x0000000000577000-memory.dmp	PlugX
behavioral2/memory/3576-127-0x00000000029A0000-0x00000000029C5000-memory.dmp	PlugX
behavioral2/memory/3852-131-0x0000000002DC0000-0x0000000002DE5000-memory.dmp	PlugX

Executes dropped EXE 2 IoCs

Processes:

Mc.exeMc.exe

pid process

1356 Mc.exe
3612 Mc.exe
Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3576 svchost.exe
Loads dropped DLL 1 IoCs

Processes:

Mc.exe

pid process

1356 Mc.exe

pid	process
1356	Mc.exe
3612	Mc.exe

pid	process
1356	Mc.exe

Drops file in System32 directory 5 IoCs

Processes:

svchost.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\counters2.dat	svchost.exe
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

Drops file in Windows directory 6 IoCs

Processes:

Mc.exe

description	ioc	process
File opened for modification	C:\Windows\McUtil.dll.url	Mc.exe
File created	C:\Windows\McUtil.dll.url	Mc.exe
File opened for modification	C:\Windows\Mc.exe	Mc.exe
File created	C:\Windows\Mc.exe	Mc.exe
File opened for modification	C:\Windows\McUtil.dll	Mc.exe
File created	C:\Windows\McUtil.dll	Mc.exe

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

System Information Discovery
T1082

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

Processes:

svchost.exe

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

Processes:

svchost.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\CLASSES\XXXX	svchost.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\XXXX\CLSID = 36003200320034003400350043003000330030003700420036004300320032000000	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

svchost.exemsiexec.exe

pid	process
3576	svchost.exe
3576	svchost.exe
3576	svchost.exe
3576	svchost.exe
3576	svchost.exe
3576	svchost.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3576	svchost.exe
3576	svchost.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3576	svchost.exe
3576	svchost.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3576	svchost.exe
3576	svchost.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3576	svchost.exe
3576	svchost.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe
3852	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

Processes:

svchost.exemsiexec.exe

pid process

3576 svchost.exe
3852 msiexec.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

Mc.exeMc.exesvchost.exemsiexec.exe

description	pid	process
Token: SeDebugPrivilege	1356	Mc.exe
Token: SeTcbPrivilege	1356	Mc.exe
Token: SeDebugPrivilege	3612	Mc.exe
Token: SeTcbPrivilege	3612	Mc.exe
Token: SeDebugPrivilege	3576	svchost.exe
Token: SeTcbPrivilege	3576	svchost.exe
Token: SeDebugPrivilege	3852	msiexec.exe
Token: SeTcbPrivilege	3852	msiexec.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exeMc.exesvchost.exe

description	pid	process	target process
PID 3936 wrote to memory of 1356	3936	6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe	Mc.exe
PID 3936 wrote to memory of 1356	3936	6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe	Mc.exe
PID 3936 wrote to memory of 1356	3936	6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe	Mc.exe
PID 3612 wrote to memory of 3576	3612	Mc.exe	svchost.exe
PID 3612 wrote to memory of 3576	3612	Mc.exe	svchost.exe
PID 3612 wrote to memory of 3576	3612	Mc.exe	svchost.exe
PID 3612 wrote to memory of 3576	3612	Mc.exe	svchost.exe
PID 3612 wrote to memory of 3576	3612	Mc.exe	svchost.exe
PID 3612 wrote to memory of 3576	3612	Mc.exe	svchost.exe
PID 3612 wrote to memory of 3576	3612	Mc.exe	svchost.exe
PID 3612 wrote to memory of 3576	3612	Mc.exe	svchost.exe
PID 3576 wrote to memory of 3852	3576	svchost.exe	msiexec.exe
PID 3576 wrote to memory of 3852	3576	svchost.exe	msiexec.exe
PID 3576 wrote to memory of 3852	3576	svchost.exe	msiexec.exe
PID 3576 wrote to memory of 3852	3576	svchost.exe	msiexec.exe
PID 3576 wrote to memory of 3852	3576	svchost.exe	msiexec.exe
PID 3576 wrote to memory of 3852	3576	svchost.exe	msiexec.exe
PID 3576 wrote to memory of 3852	3576	svchost.exe	msiexec.exe
PID 3576 wrote to memory of 3852	3576	svchost.exe	msiexec.exe

C:\Users\Admin\AppData\Local\Temp\6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe
"C:\Users\Admin\AppData\Local\Temp\6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3936
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\Mc.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Mc.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  PID:1356

C:\Windows\Mc.exe
C:\Windows\Mc.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3612
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\svchost.exe
  2⤵
  - Deletes itself
  - Drops file in System32 directory
  - Checks processor information in registry
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3576
- - C:\Windows\SysWOW64\msiexec.exe
    C:\Windows\SysWOW64\msiexec.exe
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:3852

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:\Users\Admin\AppData\Local\Temp\RarSFX0\Mc.exe

MD5
884d46c01c762ad6ddd2759fd921bf71

SHA1
d201b130232e0ea411daa23c1ba2892fe6468712

SHA256
3124fcb79da0bdf9d0d1995e37b06f7929d83c1c4b60e38c104743be71170efe

SHA512
0acb3fe1050c1c07880ed2161956c4bee7c1e813a5fb518059b9bb88ed0bff50c108ad7b3708b6568413df4bdcc6f4d26dcd8759625a5ab77c4b26c1ba4f8813

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Mc.exe

MD5
884d46c01c762ad6ddd2759fd921bf71

SHA1
d201b130232e0ea411daa23c1ba2892fe6468712

SHA256
3124fcb79da0bdf9d0d1995e37b06f7929d83c1c4b60e38c104743be71170efe

SHA512
0acb3fe1050c1c07880ed2161956c4bee7c1e813a5fb518059b9bb88ed0bff50c108ad7b3708b6568413df4bdcc6f4d26dcd8759625a5ab77c4b26c1ba4f8813

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\McUtil.dll

MD5
ffa5f4b6b580d53bc311d6e5bace3110

SHA1
d599ca575b995d8de971aed8a64762225bde386d

SHA256
9857e40be1fb5b9b6db93dc03f96f6b3ff0ffab85af7944dddcac0e37775ab02

SHA512
20ac2b2508e931d545e952d29afa5ee8ce6600934e56ff8aee169ee2e1cb7c0d7eb1396c947edb45c31a434bd17ceada0cdfd5ea0c11ce7cc7298cbac4c9ca90

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\McUtil.dll.url

MD5
edde2e450441e30b15017ab452e8098c

SHA1
bcb266521f254d4408e78ee1c0b1089c4eb6026c

SHA256
ffd0ecf04be3041c0878d13b1de5576e1c58ea900944475ed944695e8b96c632

SHA512
eff93e35b42393f124a6db78c68ba414aa2b052520b6cf4f8588628e7a6748ebf179dbff8a8ea6ce5b3fa882fa7bcb2ea7814baf4976f31c804435d6b3fa2d52

Download Submit
C:\Windows\Mc.exe

MD5
884d46c01c762ad6ddd2759fd921bf71

SHA1
d201b130232e0ea411daa23c1ba2892fe6468712

SHA256
3124fcb79da0bdf9d0d1995e37b06f7929d83c1c4b60e38c104743be71170efe

SHA512
0acb3fe1050c1c07880ed2161956c4bee7c1e813a5fb518059b9bb88ed0bff50c108ad7b3708b6568413df4bdcc6f4d26dcd8759625a5ab77c4b26c1ba4f8813

Download Submit
C:\Windows\Mc.exe

MD5
884d46c01c762ad6ddd2759fd921bf71

SHA1
d201b130232e0ea411daa23c1ba2892fe6468712

SHA256
3124fcb79da0bdf9d0d1995e37b06f7929d83c1c4b60e38c104743be71170efe

SHA512
0acb3fe1050c1c07880ed2161956c4bee7c1e813a5fb518059b9bb88ed0bff50c108ad7b3708b6568413df4bdcc6f4d26dcd8759625a5ab77c4b26c1ba4f8813

Download Submit
C:\Windows\McUtil.dll

MD5
ffa5f4b6b580d53bc311d6e5bace3110

SHA1
d599ca575b995d8de971aed8a64762225bde386d

SHA256
9857e40be1fb5b9b6db93dc03f96f6b3ff0ffab85af7944dddcac0e37775ab02

SHA512
20ac2b2508e931d545e952d29afa5ee8ce6600934e56ff8aee169ee2e1cb7c0d7eb1396c947edb45c31a434bd17ceada0cdfd5ea0c11ce7cc7298cbac4c9ca90

Download Submit
C:\Windows\McUtil.dll.url

MD5
edde2e450441e30b15017ab452e8098c

SHA1
bcb266521f254d4408e78ee1c0b1089c4eb6026c

SHA256
ffd0ecf04be3041c0878d13b1de5576e1c58ea900944475ed944695e8b96c632

SHA512
eff93e35b42393f124a6db78c68ba414aa2b052520b6cf4f8588628e7a6748ebf179dbff8a8ea6ce5b3fa882fa7bcb2ea7814baf4976f31c804435d6b3fa2d52

Download Submit
\Users\Admin\AppData\Local\Temp\RarSFX0\McUtil.dll

MD5
ffa5f4b6b580d53bc311d6e5bace3110

SHA1
d599ca575b995d8de971aed8a64762225bde386d

SHA256
9857e40be1fb5b9b6db93dc03f96f6b3ff0ffab85af7944dddcac0e37775ab02

SHA512
20ac2b2508e931d545e952d29afa5ee8ce6600934e56ff8aee169ee2e1cb7c0d7eb1396c947edb45c31a434bd17ceada0cdfd5ea0c11ce7cc7298cbac4c9ca90

Download Submit
memory/1356-125-0x0000000000550000-0x0000000000577000-memory.dmp

Filesize
156KB

Download
memory/3576-126-0x00000000005D0000-0x00000000005D1000-memory.dmp

Filesize
4KB

Download
memory/3576-127-0x00000000029A0000-0x00000000029C5000-memory.dmp

Filesize
148KB

Download
memory/3612-123-0x0000000000F80000-0x0000000001080000-memory.dmp

Filesize
1024KB

Download
memory/3612-124-0x0000000000590000-0x00000000005B7000-memory.dmp

Filesize
156KB

Download
memory/3852-130-0x0000000002940000-0x0000000002941000-memory.dmp

Filesize
4KB

Download
memory/3852-131-0x0000000002DC0000-0x0000000002DE5000-memory.dmp

Filesize
148KB

Download