gh0strat | a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25

General

Target

a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25.exe
Size

611KB
MD5

5614922685bcd1d434aa0abafac3893d
SHA1

a703246ac0d0f072aa058f57d7a275b27815ce5c
SHA256

a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25
SHA512

66fc560b36207fb0c2ae7c2ef3c687f3572540f2c8f1d04594a7bf06a7486487f3f0d015c3a681007b6e3711fd52bb68b8d3062f51db156e97884c0cb7b25e92
SSDEEP

12288:dFpuzZSkcBNrl5mTEUkDaSdJfpSaoNRVBUyMCe8VMM80B7qrI3iK1XBwZQevUo:dFmShDrngEUkDaiJfpSaoNRpMCe8CM8H

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 5 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/1136-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/3040-11-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/1136-18-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit
behavioral2/memory/3236-26-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit
behavioral2/memory/3040-28-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/1136-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/3040-11-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/1136-18-0x0000000000400000-0x0000000000585000-memory.dmp	family_gh0strat
behavioral2/memory/3236-26-0x0000000000400000-0x0000000000585000-memory.dmp	family_gh0strat
behavioral2/memory/3040-28-0x0000000000400000-0x0000000000585000-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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\QAssist.sys	Dtlst.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys"	Dtlst.exe

Executes dropped EXE 2 IoCs

pid	Process
3040	Dtlst.exe
3236	Dtlst.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Dtlst.exe	a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25.exe
File opened for modification	C:\Windows\SysWOW64\Dtlst.exe	a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1136-0-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral2/files/0x00080000000234ae-9.dat	upx
behavioral2/memory/1136-18-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral2/memory/3236-26-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral2/memory/3040-28-0x0000000000400000-0x0000000000585000-memory.dmp	upx

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	a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dtlst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dtlst.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
3684	PING.EXE
3068	cmd.exe

Modifies data under HKEY_USERS 3 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Dtlst.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	Dtlst.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	Dtlst.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3684	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
3236	Dtlst.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1136	a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25.exe
Token: SeLoadDriverPrivilege	3236	Dtlst.exe
Token: 33	3236	Dtlst.exe
Token: SeIncBasePriorityPrivilege	3236	Dtlst.exe
Token: 33	3236	Dtlst.exe
Token: SeIncBasePriorityPrivilege	3236	Dtlst.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1136 wrote to memory of 3068	1136	a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25.exe	83
PID 1136 wrote to memory of 3068	1136	a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25.exe	83
PID 1136 wrote to memory of 3068	1136	a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25.exe	83
PID 3040 wrote to memory of 3236	3040	Dtlst.exe	84
PID 3040 wrote to memory of 3236	3040	Dtlst.exe	84
PID 3040 wrote to memory of 3236	3040	Dtlst.exe	84
PID 3068 wrote to memory of 3684	3068	cmd.exe	86
PID 3068 wrote to memory of 3684	3068	cmd.exe	86
PID 3068 wrote to memory of 3684	3068	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25.exe
"C:\Users\Admin\AppData\Local\Temp\a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1136
- 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\A741EE~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3068
- - 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:3684

C:\Windows\SysWOW64\Dtlst.exe
C:\Windows\SysWOW64\Dtlst.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\SysWOW64\Dtlst.exe
  C:\Windows\SysWOW64\Dtlst.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:3236

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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\Dtlst.exe

Filesize
611KB

MD5
5614922685bcd1d434aa0abafac3893d

SHA1
a703246ac0d0f072aa058f57d7a275b27815ce5c

SHA256
a741eeba901c52df6b1220e61bc03d2266e1dc5e8a8a2c6f724ed047c3528b25

SHA512
66fc560b36207fb0c2ae7c2ef3c687f3572540f2c8f1d04594a7bf06a7486487f3f0d015c3a681007b6e3711fd52bb68b8d3062f51db156e97884c0cb7b25e92

Download Submit
memory/1136-0-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/1136-1-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/1136-18-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/3040-11-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/3040-28-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/3236-26-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads