gh0strat | 01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004

General

Target

01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004.exe
Size

491KB
MD5

e11f7015e74102c6a2abe27434e7b9d7
SHA1

485652878fea0efaf7b843dac4707b0f34cb6b68
SHA256

01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004
SHA512

a2f2c47156077c9f8b9ecb63cd333e9254492babccd01315f138a6bb62efd1e8804990e452f187bea25cbde8dd183325c74205839a7705f0505682b78066b7f3
SSDEEP

6144:GpoMkequERu8qQ1fjYMMW9eKZH+IdISTUL24qL9cPKcPzR2RS6lZv:oDR+u8pfjYMMWNvdhUSByFPzwv

Score

10^/10

gh0strat purplefox discovery rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 12 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/1040-2-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/1040-3-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/1040-5-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/1040-6-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/2944-14-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/2944-16-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/2944-17-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/2944-13-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/2944-25-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/1012-26-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/1040-24-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/1012-28-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 12 IoCs

resource	yara_rule
behavioral2/memory/1040-2-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/1040-3-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/1040-5-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/1040-6-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/2944-14-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/2944-16-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/2944-17-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/2944-13-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/2944-25-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/1012-26-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/1040-24-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/1012-28-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat

Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat
Gh0strat family
gh0strat
PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox
Purplefox family
purplefox

Executes dropped EXE 2 IoCs

pid	Process
2944	Skcsk.exe
1012	Skcsk.exe

UPX packed file 14 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1040-2-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/1040-0-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/1040-3-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/1040-5-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/1040-6-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/2944-11-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/2944-14-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/2944-16-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/2944-17-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/2944-13-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/2944-25-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/1012-26-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/1040-24-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/1012-28-0x0000000010000000-0x00000000101D0000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Skcsk.exe	01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004.exe
File opened for modification	C:\Program Files\Skcsk.exe	01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	Skcsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Skcsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
5100	cmd.exe
780	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
780	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1040	01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1040 wrote to memory of 5100	1040	01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004.exe	84
PID 1040 wrote to memory of 5100	1040	01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004.exe	84
PID 1040 wrote to memory of 5100	1040	01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004.exe	84
PID 2944 wrote to memory of 1012	2944	Skcsk.exe	85
PID 2944 wrote to memory of 1012	2944	Skcsk.exe	85
PID 2944 wrote to memory of 1012	2944	Skcsk.exe	85
PID 5100 wrote to memory of 780	5100	cmd.exe	87
PID 5100 wrote to memory of 780	5100	cmd.exe	87
PID 5100 wrote to memory of 780	5100	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004.exe
"C:\Users\Admin\AppData\Local\Temp\01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1040
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\01BC8A~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5100
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 2 127.0.0.1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:780

C:\Program Files\Skcsk.exe
"C:\\Program Files\\Skcsk.exe" -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Program Files\Skcsk.exe
  "C:\Program Files\Skcsk.exe" -acsi
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

1

T1018

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files\Skcsk.exe

Filesize
491KB

MD5
e11f7015e74102c6a2abe27434e7b9d7

SHA1
485652878fea0efaf7b843dac4707b0f34cb6b68

SHA256
01bc8af53338ddf735e744e947c659477b275854a25d3a64edf4fa092b4a5004

SHA512
a2f2c47156077c9f8b9ecb63cd333e9254492babccd01315f138a6bb62efd1e8804990e452f187bea25cbde8dd183325c74205839a7705f0505682b78066b7f3

Download Submit
memory/1012-26-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/1012-28-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/1040-0-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/1040-3-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/1040-5-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/1040-6-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/1040-2-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/1040-24-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2944-11-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2944-13-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2944-25-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2944-17-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2944-16-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2944-14-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download

Analysis

Sharing