gh0strat | d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef

General

Target

d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef.exe
Size

843KB
MD5

72d713ac7194e970b5d7f927967e3688
SHA1

b4ad499cdcb1d3409270ec9b86b6deb9397a28ae
SHA256

d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef
SHA512

59f60ed53470a09e2fa7db16ba41c990894260ca923614a0a9ecc77e008c718d4771193d73a0243408b2a1efb64a4e4e167c25d8d46e39e3cd306f06e9546636
SSDEEP

24576:iKnZJNXNon3Nr+C+l/pB4dCHyWdVbStQyRVp:iKnZj6ul/p+WnSt7p

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 4 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/2816-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral1/memory/2816-21-0x0000000000400000-0x0000000000620000-memory.dmp	purplefox_rootkit
behavioral1/memory/2948-29-0x0000000000400000-0x0000000000620000-memory.dmp	purplefox_rootkit
behavioral1/memory/2752-39-0x0000000000400000-0x0000000000620000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral1/memory/2816-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral1/memory/2816-21-0x0000000000400000-0x0000000000620000-memory.dmp	family_gh0strat
behavioral1/memory/2948-29-0x0000000000400000-0x0000000000620000-memory.dmp	family_gh0strat
behavioral1/memory/2752-39-0x0000000000400000-0x0000000000620000-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	Jbrja.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"	Jbrja.exe

Deletes itself 1 IoCs

pid	Process
2860	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2948	Jbrja.exe
2752	Jbrja.exe

Loads dropped DLL 1 IoCs

pid	Process
2948	Jbrja.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Jbrja.exe	d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef.exe
File created	C:\Windows\SysWOW64\Jbrja.exe	d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2816-0-0x0000000000400000-0x0000000000620000-memory.dmp	upx
behavioral1/files/0x000700000001211b-9.dat	upx
behavioral1/memory/2948-10-0x0000000000400000-0x0000000000620000-memory.dmp	upx
behavioral1/memory/2816-21-0x0000000000400000-0x0000000000620000-memory.dmp	upx
behavioral1/memory/2948-29-0x0000000000400000-0x0000000000620000-memory.dmp	upx
behavioral1/memory/2752-39-0x0000000000400000-0x0000000000620000-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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Jbrja.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Jbrja.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
2860	cmd.exe
2300	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2300	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2752	Jbrja.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2816	d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef.exe
Token: SeLoadDriverPrivilege	2752	Jbrja.exe
Token: 33	2752	Jbrja.exe
Token: SeIncBasePriorityPrivilege	2752	Jbrja.exe
Token: 33	2752	Jbrja.exe
Token: SeIncBasePriorityPrivilege	2752	Jbrja.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2816 wrote to memory of 2860	2816	d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef.exe	31
PID 2816 wrote to memory of 2860	2816	d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef.exe	31
PID 2816 wrote to memory of 2860	2816	d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef.exe	31
PID 2816 wrote to memory of 2860	2816	d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef.exe	31
PID 2948 wrote to memory of 2752	2948	Jbrja.exe	32
PID 2948 wrote to memory of 2752	2948	Jbrja.exe	32
PID 2948 wrote to memory of 2752	2948	Jbrja.exe	32
PID 2948 wrote to memory of 2752	2948	Jbrja.exe	32
PID 2860 wrote to memory of 2300	2860	cmd.exe	34
PID 2860 wrote to memory of 2300	2860	cmd.exe	34
PID 2860 wrote to memory of 2300	2860	cmd.exe	34
PID 2860 wrote to memory of 2300	2860	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef.exe
"C:\Users\Admin\AppData\Local\Temp\d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2816
- 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\D67361~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2860
- - 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:2300

C:\Windows\SysWOW64\Jbrja.exe
C:\Windows\SysWOW64\Jbrja.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\SysWOW64\Jbrja.exe
  C:\Windows\SysWOW64\Jbrja.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:2752

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

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Downloads

C:\Windows\SysWOW64\Jbrja.exe

Filesize
843KB

MD5
72d713ac7194e970b5d7f927967e3688

SHA1
b4ad499cdcb1d3409270ec9b86b6deb9397a28ae

SHA256
d673611d726d39cfbcf3f28f5834b44cafaff82d70eabc9a0e9ab111549abcef

SHA512
59f60ed53470a09e2fa7db16ba41c990894260ca923614a0a9ecc77e008c718d4771193d73a0243408b2a1efb64a4e4e167c25d8d46e39e3cd306f06e9546636

Download Submit
memory/2752-39-0x0000000000400000-0x0000000000620000-memory.dmp

Filesize
2.1MB

Download
memory/2816-0-0x0000000000400000-0x0000000000620000-memory.dmp

Filesize
2.1MB

Download
memory/2816-1-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/2816-21-0x0000000000400000-0x0000000000620000-memory.dmp

Filesize
2.1MB

Download
memory/2948-10-0x0000000000400000-0x0000000000620000-memory.dmp

Filesize
2.1MB

Download
memory/2948-29-0x0000000000400000-0x0000000000620000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads