plugx | 6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92

Resubmissions

24-02-2022 11:15

220224-nck2fschd6 10

22-02-2022 08:29

220222-kdlgtsfgen 10

Analysis

max time kernel
152s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-en-20220112
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

resource	yara_rule
behavioral3/memory/3944-144-0x0000000000D30000-0x0000000000D57000-memory.dmp	PlugX
behavioral3/memory/3668-145-0x00000000006F0000-0x0000000000717000-memory.dmp	PlugX
behavioral3/memory/1764-147-0x0000000003860000-0x0000000003885000-memory.dmp	PlugX
behavioral3/memory/1532-151-0x00000000043A0000-0x00000000043C5000-memory.dmp	PlugX

Executes dropped EXE 2 IoCs

pid	Process
3668	Mc.exe
3944	Mc.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe

Loads dropped DLL 2 IoCs

pid	Process
3668	Mc.exe
3944	Mc.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
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
File opened for modification	C:\Windows\McUtil.dll.url	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

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\XXXX	svchost.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\XXXX\CLSID = 37003100410033003600430042004100300032003300320039004300410036000000	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1764	svchost.exe
1764	svchost.exe
1764	svchost.exe
1764	svchost.exe
1764	svchost.exe
1764	svchost.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1764	svchost.exe
1764	svchost.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1764	svchost.exe
1764	svchost.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1764	svchost.exe
1764	svchost.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1764	svchost.exe
1764	svchost.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe
1532	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1764	svchost.exe
1532	msiexec.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3668	Mc.exe
Token: SeTcbPrivilege	3668	Mc.exe
Token: SeDebugPrivilege	3944	Mc.exe
Token: SeTcbPrivilege	3944	Mc.exe
Token: SeDebugPrivilege	1764	svchost.exe
Token: SeTcbPrivilege	1764	svchost.exe
Token: SeDebugPrivilege	1532	msiexec.exe
Token: SeTcbPrivilege	1532	msiexec.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3868 wrote to memory of 3668	3868	6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe	57
PID 3868 wrote to memory of 3668	3868	6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe	57
PID 3868 wrote to memory of 3668	3868	6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe	57
PID 3944 wrote to memory of 1764	3944	Mc.exe	60
PID 3944 wrote to memory of 1764	3944	Mc.exe	60
PID 3944 wrote to memory of 1764	3944	Mc.exe	60
PID 3944 wrote to memory of 1764	3944	Mc.exe	60
PID 3944 wrote to memory of 1764	3944	Mc.exe	60
PID 3944 wrote to memory of 1764	3944	Mc.exe	60
PID 3944 wrote to memory of 1764	3944	Mc.exe	60
PID 3944 wrote to memory of 1764	3944	Mc.exe	60
PID 1764 wrote to memory of 1532	1764	svchost.exe	62
PID 1764 wrote to memory of 1532	1764	svchost.exe	62
PID 1764 wrote to memory of 1532	1764	svchost.exe	62
PID 1764 wrote to memory of 1532	1764	svchost.exe	62
PID 1764 wrote to memory of 1532	1764	svchost.exe	62
PID 1764 wrote to memory of 1532	1764	svchost.exe	62
PID 1764 wrote to memory of 1532	1764	svchost.exe	62
PID 1764 wrote to memory of 1532	1764	svchost.exe	62

C:\Users\Admin\AppData\Local\Temp\6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe
"C:\Users\Admin\AppData\Local\Temp\6e6bfcbc22644d060670718dea2c5a7d860edc55cf8bd6100e277e53a8b0fc92.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3868
- 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:3668

C:\Windows\Mc.exe
C:\Windows\Mc.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3944
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\svchost.exe
  2⤵
  - Checks processor information in registry
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1764
- - C:\Windows\SysWOW64\msiexec.exe
    C:\Windows\SysWOW64\msiexec.exe
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:1532

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

memory/1532-150-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/1532-151-0x00000000043A0000-0x00000000043C5000-memory.dmp

Filesize
148KB

Download
memory/1764-146-0x0000000002FF0000-0x0000000002FF1000-memory.dmp

Filesize
4KB

Download
memory/1764-147-0x0000000003860000-0x0000000003885000-memory.dmp

Filesize
148KB

Download
memory/3668-145-0x00000000006F0000-0x0000000000717000-memory.dmp

Filesize
156KB

Download
memory/3944-143-0x0000000000DE0000-0x0000000000EE0000-memory.dmp

Filesize
1024KB

Download
memory/3944-144-0x0000000000D30000-0x0000000000D57000-memory.dmp

Filesize
156KB

Download