gh0strat | e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253

General

Target

e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253.exe
Size

491KB
MD5

9248742a45493b74ced90a6c2787229b
SHA1

6de6bf1f27437df0d94f549920271b14105478f3
SHA256

e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253
SHA512

1a7be94fd6e95b17f4c5f4bb609a61a5aa9bb947e63a2749e7b53153f7a9c1060333d30168ed0dbba4dc6193bf86046f2bc3466214eaa1ea38589d2bcee29d1e
SSDEEP

6144:GpoMkequERu8qQ1fjYMMW9eKZH+IdISTUL24qL9cPKcPzR2RP6lZv:oDR+u8pfjYMMWNvdhUSByFPzJv

Score

10^/10

gh0strat purplefox discovery rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 9 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/2132-5-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral1/memory/2132-3-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral1/memory/2132-2-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral1/memory/2600-14-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral1/memory/2600-16-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral1/memory/2564-25-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral1/memory/2564-27-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral1/memory/2600-28-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit
behavioral1/memory/2132-20-0x0000000010000000-0x00000000101D0000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 9 IoCs

resource	yara_rule
behavioral1/memory/2132-5-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral1/memory/2132-3-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral1/memory/2132-2-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral1/memory/2600-14-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral1/memory/2600-16-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral1/memory/2564-25-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral1/memory/2564-27-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral1/memory/2600-28-0x0000000010000000-0x00000000101D0000-memory.dmp	family_gh0strat
behavioral1/memory/2132-20-0x0000000010000000-0x00000000101D0000-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
PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox

Deletes itself 1 IoCs

pid	Process
2616	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2600	Sklde.exe
2564	Sklde.exe

Loads dropped DLL 1 IoCs

pid	Process
2600	Sklde.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2132-0-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral1/memory/2132-5-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral1/memory/2132-3-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral1/memory/2132-2-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral1/memory/2600-14-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral1/memory/2600-16-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral1/memory/2564-25-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral1/memory/2564-27-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral1/memory/2600-28-0x0000000010000000-0x00000000101D0000-memory.dmp	upx
behavioral1/memory/2132-20-0x0000000010000000-0x00000000101D0000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Sklde.exe	e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253.exe
File opened for modification	C:\Program Files\Sklde.exe	e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253.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	e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Sklde.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Sklde.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
2616	cmd.exe
2496	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2496	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2132	e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 2616	2132	e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253.exe	29
PID 2132 wrote to memory of 2616	2132	e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253.exe	29
PID 2132 wrote to memory of 2616	2132	e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253.exe	29
PID 2132 wrote to memory of 2616	2132	e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253.exe	29
PID 2600 wrote to memory of 2564	2600	Sklde.exe	30
PID 2600 wrote to memory of 2564	2600	Sklde.exe	30
PID 2600 wrote to memory of 2564	2600	Sklde.exe	30
PID 2600 wrote to memory of 2564	2600	Sklde.exe	30
PID 2616 wrote to memory of 2496	2616	cmd.exe	32
PID 2616 wrote to memory of 2496	2616	cmd.exe	32
PID 2616 wrote to memory of 2496	2616	cmd.exe	32
PID 2616 wrote to memory of 2496	2616	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253.exe
"C:\Users\Admin\AppData\Local\Temp\e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2132
- 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\E69774~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2616
- - 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:2496

C:\Program Files\Sklde.exe
"C:\\Program Files\\Sklde.exe" -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Program Files\Sklde.exe
  "C:\Program Files\Sklde.exe" -acsi
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2564

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

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Downloads

C:\Program Files\Sklde.exe

Filesize
491KB

MD5
9248742a45493b74ced90a6c2787229b

SHA1
6de6bf1f27437df0d94f549920271b14105478f3

SHA256
e697742a0c12ee9b3f3bc5a04745c98062db1ac154dc1a6351d5f2a6f0166253

SHA512
1a7be94fd6e95b17f4c5f4bb609a61a5aa9bb947e63a2749e7b53153f7a9c1060333d30168ed0dbba4dc6193bf86046f2bc3466214eaa1ea38589d2bcee29d1e

Download Submit
memory/2132-0-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2132-5-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2132-3-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2132-2-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2132-20-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2564-25-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2564-27-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2600-14-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2600-16-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

Download
memory/2600-28-0x0000000010000000-0x00000000101D0000-memory.dmp

Filesize
1.8MB

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Analysis

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