gh0strat | 3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f

General

Target

3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f.exe
Size

617KB
MD5

1373429c415b5a4cbfee9bd642acb697
SHA1

71b92cbe5796e4bac7be89ab17624fcfdaaae0e2
SHA256

3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f
SHA512

a7cb0ef1fc4aef1d55662a693e1ad50e54cfca28fbc18874191eae606186ce50e8fe4137d109e6928f362aae03f954ecfd216f1301f114479cf8392575307e83
SSDEEP

12288:UhymnwJFPNdgBAEHApqePJN1AmLM7uVq9sS+ir005yz:UUmwrl2Ao7sJNlM7ymsSJ005yz

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 6 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/1204-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral1/memory/2496-25-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral1/memory/1204-20-0x0000000000400000-0x0000000000564000-memory.dmp	purplefox_rootkit
behavioral1/memory/2316-24-0x0000000000400000-0x0000000000564000-memory.dmp	purplefox_rootkit
behavioral1/memory/2496-22-0x0000000000400000-0x0000000000564000-memory.dmp	purplefox_rootkit
behavioral1/memory/2496-40-0x0000000000400000-0x0000000000564000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 6 IoCs

resource	yara_rule
behavioral1/memory/1204-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral1/memory/2496-25-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral1/memory/1204-20-0x0000000000400000-0x0000000000564000-memory.dmp	family_gh0strat
behavioral1/memory/2316-24-0x0000000000400000-0x0000000000564000-memory.dmp	family_gh0strat
behavioral1/memory/2496-22-0x0000000000400000-0x0000000000564000-memory.dmp	family_gh0strat
behavioral1/memory/2496-40-0x0000000000400000-0x0000000000564000-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	Dkrjq.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"	Dkrjq.exe

Deletes itself 1 IoCs

pid	Process
2928	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2316	Dkrjq.exe
2496	Dkrjq.exe

Loads dropped DLL 1 IoCs

pid	Process
2316	Dkrjq.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1204-0-0x0000000000400000-0x0000000000564000-memory.dmp	upx
behavioral1/files/0x00080000000120f9-9.dat	upx
behavioral1/memory/2316-10-0x0000000000400000-0x0000000000564000-memory.dmp	upx
behavioral1/memory/1204-20-0x0000000000400000-0x0000000000564000-memory.dmp	upx
behavioral1/memory/2316-24-0x0000000000400000-0x0000000000564000-memory.dmp	upx
behavioral1/memory/2496-22-0x0000000000400000-0x0000000000564000-memory.dmp	upx
behavioral1/memory/2496-40-0x0000000000400000-0x0000000000564000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Dkrjq.exe	3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f.exe
File opened for modification	C:\Windows\SysWOW64\Dkrjq.exe	3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dkrjq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dkrjq.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
2928	cmd.exe
2844	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2844	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2496	Dkrjq.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1204	3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f.exe
Token: SeLoadDriverPrivilege	2496	Dkrjq.exe
Token: 33	2496	Dkrjq.exe
Token: SeIncBasePriorityPrivilege	2496	Dkrjq.exe
Token: 33	2496	Dkrjq.exe
Token: SeIncBasePriorityPrivilege	2496	Dkrjq.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 2928	1204	3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f.exe	31
PID 1204 wrote to memory of 2928	1204	3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f.exe	31
PID 1204 wrote to memory of 2928	1204	3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f.exe	31
PID 1204 wrote to memory of 2928	1204	3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f.exe	31
PID 2316 wrote to memory of 2496	2316	Dkrjq.exe	32
PID 2316 wrote to memory of 2496	2316	Dkrjq.exe	32
PID 2316 wrote to memory of 2496	2316	Dkrjq.exe	32
PID 2316 wrote to memory of 2496	2316	Dkrjq.exe	32
PID 2928 wrote to memory of 2844	2928	cmd.exe	34
PID 2928 wrote to memory of 2844	2928	cmd.exe	34
PID 2928 wrote to memory of 2844	2928	cmd.exe	34
PID 2928 wrote to memory of 2844	2928	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f.exe
"C:\Users\Admin\AppData\Local\Temp\3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1204
- 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\3D3641~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2928
- - 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:2844

C:\Windows\SysWOW64\Dkrjq.exe
C:\Windows\SysWOW64\Dkrjq.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Windows\SysWOW64\Dkrjq.exe
  C:\Windows\SysWOW64\Dkrjq.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:2496

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\Dkrjq.exe

Filesize
617KB

MD5
1373429c415b5a4cbfee9bd642acb697

SHA1
71b92cbe5796e4bac7be89ab17624fcfdaaae0e2

SHA256
3d36416f0edfc758bc4dc014fa3242c0a36c068d33541ff83297b01f2cdf022f

SHA512
a7cb0ef1fc4aef1d55662a693e1ad50e54cfca28fbc18874191eae606186ce50e8fe4137d109e6928f362aae03f954ecfd216f1301f114479cf8392575307e83

Download Submit
memory/1204-0-0x0000000000400000-0x0000000000564000-memory.dmp

Filesize
1.4MB

Download
memory/1204-1-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/1204-20-0x0000000000400000-0x0000000000564000-memory.dmp

Filesize
1.4MB

Download
memory/2316-10-0x0000000000400000-0x0000000000564000-memory.dmp

Filesize
1.4MB

Download
memory/2316-24-0x0000000000400000-0x0000000000564000-memory.dmp

Filesize
1.4MB

Download
memory/2496-25-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/2496-22-0x0000000000400000-0x0000000000564000-memory.dmp

Filesize
1.4MB

Download
memory/2496-40-0x0000000000400000-0x0000000000564000-memory.dmp

Filesize
1.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads