gh0strat | ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a

General

Target

ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a.exe
Size

840KB
MD5

4ed34f731afb121409605b3b84ee97b2
SHA1

c75930cae82f86257396372ed95f0ca3fb85fe4a
SHA256

ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a
SHA512

6be774ca4b0aca8c1ec58d5c6c69dc38361eff7487ea98b7586b24c2ce4bcdf877fe21250254f90f66537c87bcf59edf5bb54ff7e320638935331c1e5fb61fc2
SSDEEP

24576:1z5IE72LxXgzQgC8iXn8m0hpwTe5Wm84SLnxjpaoilfF:FOLpmi8iXn8m4Rcm8L9jpxil

Score

10^/10

gh0strat purplefox discovery rat rootkit trojan vmprotect

Malware Config

Signatures

Detect PurpleFox Rootkit 5 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/4372-3-0x0000000010000000-0x00000000101A0000-memory.dmp	purplefox_rootkit
behavioral2/memory/4844-15-0x0000000010000000-0x00000000101A0000-memory.dmp	purplefox_rootkit
behavioral2/memory/4372-22-0x0000000000400000-0x000000000066A000-memory.dmp	purplefox_rootkit
behavioral2/memory/4844-23-0x0000000000400000-0x000000000066A000-memory.dmp	purplefox_rootkit
behavioral2/memory/4836-33-0x0000000000400000-0x000000000066A000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/4372-3-0x0000000010000000-0x00000000101A0000-memory.dmp	family_gh0strat
behavioral2/memory/4844-15-0x0000000010000000-0x00000000101A0000-memory.dmp	family_gh0strat
behavioral2/memory/4372-22-0x0000000000400000-0x000000000066A000-memory.dmp	family_gh0strat
behavioral2/memory/4844-23-0x0000000000400000-0x000000000066A000-memory.dmp	family_gh0strat
behavioral2/memory/4836-33-0x0000000000400000-0x000000000066A000-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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
21	3000	Process not Found

Executes dropped EXE 2 IoCs

pid	Process
4844	SkWcsk.exe
4836	SkWcsk.exe

VMProtect packed file 6 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral2/memory/4372-0-0x0000000000400000-0x000000000066A000-memory.dmp	vmprotect
behavioral2/memory/4372-1-0x0000000000400000-0x000000000066A000-memory.dmp	vmprotect
behavioral2/files/0x000a000000023de4-11.dat	vmprotect
behavioral2/memory/4372-22-0x0000000000400000-0x000000000066A000-memory.dmp	vmprotect
behavioral2/memory/4844-23-0x0000000000400000-0x000000000066A000-memory.dmp	vmprotect
behavioral2/memory/4836-33-0x0000000000400000-0x000000000066A000-memory.dmp	vmprotect

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\SkWcsk.exe	ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a.exe
File opened for modification	C:\Windows\SysWOW64\SkWcsk.exe	ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SkWcsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SkWcsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 3 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1780	cmd.exe
400	PING.EXE
3784	MicrosoftEdgeUpdate.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
400	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4372	ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 4836	4844	SkWcsk.exe	90
PID 4844 wrote to memory of 4836	4844	SkWcsk.exe	90
PID 4844 wrote to memory of 4836	4844	SkWcsk.exe	90
PID 4372 wrote to memory of 1780	4372	ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a.exe	91
PID 4372 wrote to memory of 1780	4372	ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a.exe	91
PID 4372 wrote to memory of 1780	4372	ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a.exe	91
PID 1780 wrote to memory of 400	1780	cmd.exe	93
PID 1780 wrote to memory of 400	1780	cmd.exe	93
PID 1780 wrote to memory of 400	1780	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a.exe
"C:\Users\Admin\AppData\Local\Temp\ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4372
- 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\EA699C~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1780
- - 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:400

C:\Windows\SysWOW64\SkWcsk.exe
C:\Windows\SysWOW64\SkWcsk.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Windows\SysWOW64\SkWcsk.exe
  C:\Windows\SysWOW64\SkWcsk.exe -acsi
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4836

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4ODkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTM2NTgwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTUzMDgxMjQ3Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3784

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:\Windows\SysWOW64\SkWcsk.exe

Filesize
840KB

MD5
4ed34f731afb121409605b3b84ee97b2

SHA1
c75930cae82f86257396372ed95f0ca3fb85fe4a

SHA256
ea699cb1c1c17b0e23e9311f13cc7cc956b4561433ab2f884885db7e2472654a

SHA512
6be774ca4b0aca8c1ec58d5c6c69dc38361eff7487ea98b7586b24c2ce4bcdf877fe21250254f90f66537c87bcf59edf5bb54ff7e320638935331c1e5fb61fc2

Download Submit
memory/4372-0-0x0000000000400000-0x000000000066A000-memory.dmp

Filesize
2.4MB

Download
memory/4372-1-0x0000000000400000-0x000000000066A000-memory.dmp

Filesize
2.4MB

Download
memory/4372-3-0x0000000010000000-0x00000000101A0000-memory.dmp

Filesize
1.6MB

Download
memory/4372-22-0x0000000000400000-0x000000000066A000-memory.dmp

Filesize
2.4MB

Download
memory/4836-33-0x0000000000400000-0x000000000066A000-memory.dmp

Filesize
2.4MB

Download
memory/4844-15-0x0000000010000000-0x00000000101A0000-memory.dmp

Filesize
1.6MB

Download
memory/4844-23-0x0000000000400000-0x000000000066A000-memory.dmp

Filesize
2.4MB

Download

Analysis

Sharing