plugx | 5fc3a63d5b76578a23f1aa59bc7618dd73fc42fe78355294bf587fb7587579e1

General

Target

5fc3a63d5b76578a23f1aa59bc7618dd73fc42fe78355294bf587fb7587579e1.exe
Size

260KB
MD5

f43faec42c367d3c8ea3c6b193398ed0
SHA1

360f85bde56f166c72690f09c765496a7e931dd6
SHA256

5fc3a63d5b76578a23f1aa59bc7618dd73fc42fe78355294bf587fb7587579e1
SHA512

2afba8a444824211e072e16fcf03a188fded5b324c4004180f772bacc503330899ace0c9ae9e2e97b7c0db989f9e8dd1cfaeed4d53e02d0fd84a7725f45dbce5

Score

10^/10

Malware Config

Signatures

Detects PlugX payload 2 IoCs

resource	yara_rule
behavioral2/memory/1744-139-0x0000000000830000-0x0000000000860000-memory.dmp	family_plugx
behavioral2/memory/1744-141-0x0000000000830000-0x0000000000860000-memory.dmp	family_plugx

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

Executes dropped EXE 1 IoCs

pid	Process
4464	hkcmd.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0006000000022f58-132.dat	upx
behavioral2/files/0x0006000000022f58-131.dat	upx
behavioral2/memory/4464-137-0x0000000000400000-0x000000000041A000-memory.dmp	upx

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-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation	5fc3a63d5b76578a23f1aa59bc7618dd73fc42fe78355294bf587fb7587579e1.exe

Loads dropped DLL 1 IoCs

pid	Process
4464	hkcmd.exe

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

System Information Discovery
T1082

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 = 38003200370030003900390036003700450037004100440038003600310032000000	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1744	svchost.exe
1744	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1744	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4464	hkcmd.exe
Token: SeTcbPrivilege	4464	hkcmd.exe
Token: SeDebugPrivilege	1744	svchost.exe
Token: SeTcbPrivilege	1744	svchost.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4464	hkcmd.exe
4464	hkcmd.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
4464	hkcmd.exe
4464	hkcmd.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3904 wrote to memory of 4464	3904	5fc3a63d5b76578a23f1aa59bc7618dd73fc42fe78355294bf587fb7587579e1.exe	83
PID 3904 wrote to memory of 4464	3904	5fc3a63d5b76578a23f1aa59bc7618dd73fc42fe78355294bf587fb7587579e1.exe	83
PID 3904 wrote to memory of 4464	3904	5fc3a63d5b76578a23f1aa59bc7618dd73fc42fe78355294bf587fb7587579e1.exe	83
PID 4464 wrote to memory of 1744	4464	hkcmd.exe	85
PID 4464 wrote to memory of 1744	4464	hkcmd.exe	85
PID 4464 wrote to memory of 1744	4464	hkcmd.exe	85
PID 4464 wrote to memory of 1744	4464	hkcmd.exe	85
PID 4464 wrote to memory of 1744	4464	hkcmd.exe	85
PID 4464 wrote to memory of 1744	4464	hkcmd.exe	85
PID 4464 wrote to memory of 1744	4464	hkcmd.exe	85
PID 4464 wrote to memory of 1744	4464	hkcmd.exe	85

C:\Users\Admin\AppData\Local\Temp\5fc3a63d5b76578a23f1aa59bc7618dd73fc42fe78355294bf587fb7587579e1.exe
"C:\Users\Admin\AppData\Local\Temp\5fc3a63d5b76578a23f1aa59bc7618dd73fc42fe78355294bf587fb7587579e1.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3904
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\hkcmd.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\hkcmd.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:4464
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\system32\svchost.exe 201 0
    3⤵
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:1744

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RarSFX0\hkcmd.exe

Filesize
34KB

MD5
fdfbe2692b9caf2714e74b02c7e77dbd

SHA1
3c45cefab43569de87f0e008f23be3df6d74093f

SHA256
f798ff4cb303a59a32ecbaf04378477ff4781c46d3843cf900c94fc2d8fa0862

SHA512
60d3a7f06ea4328b0da36475d5888eaca2f571e3d34edf7d2ae957433866e47f9abec2c5cccbf7df249ab1d4a594b940a25f9e0708abf5d323c17f62fd6ff101

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

Filesize
34KB

MD5
fdfbe2692b9caf2714e74b02c7e77dbd

SHA1
3c45cefab43569de87f0e008f23be3df6d74093f

SHA256
f798ff4cb303a59a32ecbaf04378477ff4781c46d3843cf900c94fc2d8fa0862

SHA512
60d3a7f06ea4328b0da36475d5888eaca2f571e3d34edf7d2ae957433866e47f9abec2c5cccbf7df249ab1d4a594b940a25f9e0708abf5d323c17f62fd6ff101

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

Filesize
40KB

MD5
ca7f8f2508d00b2b387dc2288b58ce3e

SHA1
c7ecea655412981ac747de04d8d8279de7a68ef3

SHA256
03a3783526b0ff574d4b302b098ee3356991552b3988586752651bbd1dac99f1

SHA512
db0b35431966d5200271f294dcc576b558af918c945779e1a795f3b13a3d157e2966e381427af53ff3edd9b09de7fb6c5f57c26bbef27bfe28145f68590244a2

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

Filesize
40KB

MD5
ca7f8f2508d00b2b387dc2288b58ce3e

SHA1
c7ecea655412981ac747de04d8d8279de7a68ef3

SHA256
03a3783526b0ff574d4b302b098ee3356991552b3988586752651bbd1dac99f1

SHA512
db0b35431966d5200271f294dcc576b558af918c945779e1a795f3b13a3d157e2966e381427af53ff3edd9b09de7fb6c5f57c26bbef27bfe28145f68590244a2

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\vlmshlp.tmp

Filesize
119KB

MD5
bda06cd5abaccde6e13cc39599186f2d

SHA1
5f212f336ec9455dbf76f8b9def2eec25f31cd30

SHA256
742392e806273d74ea54b5e4342fa236db31a04c5b5940744185c962b87aab61

SHA512
dc0912b0e77526b57748231660e1a85e845e5e82f3e02f5e3b6f14d0f1d9061096f11bf92da74521e5a6ded300343b3c1ea2cacff49ef13ef119a682c188837a

Download Submit
memory/1744-139-0x0000000000830000-0x0000000000860000-memory.dmp

Filesize
192KB

Download
memory/1744-141-0x0000000000830000-0x0000000000860000-memory.dmp

Filesize
192KB

Download
memory/4464-137-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/4464-138-0x0000000002840000-0x00000000029CF000-memory.dmp

Filesize
1.6MB

Download
memory/4464-140-0x0000000002840000-0x00000000029CF000-memory.dmp

Filesize
1.6MB

Download

Analysis

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