gh0strat | 16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4

General

Target

16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4.exe
Size

491KB
MD5

687c0c12bf3635877c3b00289335e732
SHA1

8c6d1871031b877a93ee83dcdbc8984fc79467a9
SHA256

16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4
SHA512

a95bd620d9231bd0c782e89f211f7e34945cf4c5073c8fce794f20751bc07cb489d74285be48016fc63c76f960c6fea3b74f7f9e15972855321bc91f765249f9
SSDEEP

6144:GpoMkequERu8qQ1fjYMMW9eKZH+IdISTUL24qL9cPKcPzR2R06lZv:oDR+u8pfjYMMWNvdhUSByFPzyv

Score

10^/10

gh0strat purplefox discovery rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 11 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/3580-6-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/3580-5-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/4796-17-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/4796-19-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/6044-26-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/6044-25-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/4796-16-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/4796-14-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/4796-13-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/3580-2-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral2/memory/3580-3-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 11 IoCs

resource	yara_rule
behavioral2/memory/3580-6-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/3580-5-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/4796-17-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/4796-19-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/6044-26-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/6044-25-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/4796-16-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/4796-14-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/4796-13-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/3580-2-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral2/memory/3580-3-0x0000000010000000-0x00000000101D0000-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
4796	Skcsk.exe
6044	Skcsk.exe

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3580-0-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/3580-6-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/3580-5-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/4796-17-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/4796-19-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/6044-26-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/6044-25-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/4796-16-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/4796-14-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/4796-13-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/4796-11-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/3580-2-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral2/memory/3580-3-0x0000000010000000-0x00000000101D0000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Skcsk.exe	16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4.exe
File opened for modification	C:\Program Files\Skcsk.exe	16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Skcsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4.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
1772	cmd.exe
808	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
808	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3580	16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3580 wrote to memory of 1772	3580	16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4.exe	79
PID 3580 wrote to memory of 1772	3580	16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4.exe	79
PID 3580 wrote to memory of 1772	3580	16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4.exe	79
PID 4796 wrote to memory of 6044	4796	Skcsk.exe	81
PID 4796 wrote to memory of 6044	4796	Skcsk.exe	81
PID 4796 wrote to memory of 6044	4796	Skcsk.exe	81
PID 1772 wrote to memory of 808	1772	cmd.exe	82
PID 1772 wrote to memory of 808	1772	cmd.exe	82
PID 1772 wrote to memory of 808	1772	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4.exe
"C:\Users\Admin\AppData\Local\Temp\16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3580
- 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\16FFA6~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1772
- - 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:808

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:4796
- C:\Program Files\Skcsk.exe
  "C:\Program Files\Skcsk.exe" -acsi
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:6044

Network

MITRE ATT&CK Enterprise v16

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

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Downloads

C:\Program Files\Skcsk.exe

Filesize
491KB

MD5
687c0c12bf3635877c3b00289335e732

SHA1
8c6d1871031b877a93ee83dcdbc8984fc79467a9

SHA256
16ffa6fd3f16370b267266920dd108ab80077f58269f1b793bb6d97d618aefa4

SHA512
a95bd620d9231bd0c782e89f211f7e34945cf4c5073c8fce794f20751bc07cb489d74285be48016fc63c76f960c6fea3b74f7f9e15972855321bc91f765249f9

Download Submit
memory/3580-0-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/3580-6-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/3580-5-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/3580-3-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/3580-2-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/4796-14-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/4796-16-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/4796-13-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/4796-11-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/4796-19-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/4796-17-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/6044-25-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/6044-26-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download

Analysis

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