gh0strat | 28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0

Analysis

max time kernel
150s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-10-2024 11:12

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General

Target

28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe
Size

891KB
MD5

cc8f80b421ef5815eda85a4ea6b1d2ea
SHA1

50fabdd9aa742f2b0e71b5b4c08d0cdc96632e31
SHA256

28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0
SHA512

e44cd076b9857b99285770b1be130bb91f732fb874f251dcc8092ce757ab504416a0f0da823b8a0736dc27202f17e1c9b696e38a95e5998dff94183ede1b4ceb
SSDEEP

24576:6i2Tro2H2HESq2eWJ6MQjySjyoPdzj6SPdzjN:6xTc2H2tFvduySpFRF9

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 11 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/3720-11-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3720-12-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3720-15-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2660-22-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2660-23-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2660-33-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1852-31-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2660-21-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1852-35-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1852-38-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1852-39-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 11 IoCs

resource	yara_rule
behavioral2/memory/3720-11-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3720-12-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3720-15-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2660-22-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2660-23-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2660-33-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/1852-31-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2660-21-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/1852-35-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/1852-38-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/1852-39-0x0000000010000000-0x00000000101B6000-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	TXPlatforn.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"	TXPlatforn.exe

Executes dropped EXE 4 IoCs

pid	Process
3720	RVN.exe
3464	HD_28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe
2660	TXPlatforn.exe
1852	TXPlatforn.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\TXPlatforn.exe	RVN.exe
File opened for modification	C:\Windows\SysWOW64\TXPlatforn.exe	RVN.exe

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3720-9-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3720-11-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3720-12-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3720-15-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2660-22-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2660-23-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2660-19-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2660-33-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1852-31-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2660-21-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1852-35-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1852-38-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1852-39-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 10 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	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TXPlatforn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RVN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HD_28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.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
4564	PING.EXE
1152	cmd.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4564	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4532	28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe
4532	28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
1852	TXPlatforn.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3720	RVN.exe
Token: SeLoadDriverPrivilege	1852	TXPlatforn.exe
Token: 33	1852	TXPlatforn.exe
Token: SeIncBasePriorityPrivilege	1852	TXPlatforn.exe
Token: 33	1852	TXPlatforn.exe
Token: SeIncBasePriorityPrivilege	1852	TXPlatforn.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4532	28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 3720	4532	28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe	85
PID 4532 wrote to memory of 3720	4532	28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe	85
PID 4532 wrote to memory of 3720	4532	28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe	85
PID 4532 wrote to memory of 3464	4532	28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe	86
PID 4532 wrote to memory of 3464	4532	28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe	86
PID 4532 wrote to memory of 3464	4532	28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe	86
PID 3720 wrote to memory of 1152	3720	RVN.exe	89
PID 3720 wrote to memory of 1152	3720	RVN.exe	89
PID 3720 wrote to memory of 1152	3720	RVN.exe	89
PID 3464 wrote to memory of 824	3464	HD_28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe	90
PID 3464 wrote to memory of 824	3464	HD_28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe	90
PID 3464 wrote to memory of 824	3464	HD_28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe	90
PID 2660 wrote to memory of 1852	2660	TXPlatforn.exe	91
PID 2660 wrote to memory of 1852	2660	TXPlatforn.exe	91
PID 2660 wrote to memory of 1852	2660	TXPlatforn.exe	91
PID 1152 wrote to memory of 4564	1152	cmd.exe	93
PID 1152 wrote to memory of 4564	1152	cmd.exe	93
PID 1152 wrote to memory of 4564	1152	cmd.exe	93
PID 824 wrote to memory of 2576	824	cmd.exe	95
PID 824 wrote to memory of 2576	824	cmd.exe	95
PID 824 wrote to memory of 2576	824	cmd.exe	95
PID 824 wrote to memory of 3564	824	cmd.exe	97
PID 824 wrote to memory of 3564	824	cmd.exe	97
PID 824 wrote to memory of 3564	824	cmd.exe	97
PID 824 wrote to memory of 4144	824	cmd.exe	98
PID 824 wrote to memory of 4144	824	cmd.exe	98
PID 824 wrote to memory of 4144	824	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe
"C:\Users\Admin\AppData\Local\Temp\28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Users\Admin\AppData\Local\Temp\RVN.exe
  C:\Users\Admin\AppData\Local\Temp\\RVN.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3720
- - 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\RVN.exe > nul
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:1152
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 2 127.0.0.1
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:4564
- C:\Users\Admin\AppData\Local\Temp\HD_28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe
  C:\Users\Admin\AppData\Local\Temp\HD_28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3464
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\8RKGM6DL.bat" C:\Users\Admin\AppData\Local\Temp\HD_28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:824
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbflags\18D1D00D0100" /v "osvc" /t REG_BINARY /d "0000" /f
      4⤵
      System Location Discovery: System Language Discovery
      PID:2576
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbflags\18D1D00D0100" /v "SkipContainerIdQuery" /t REG_BINARY /d "01000000" /f
      4⤵
      System Location Discovery: System Language Discovery
      PID:3564
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbflags\18D1D00D0100" /v "SkipBOSDescriptorQuery" /t REG_BINARY /d "01000000" /f
      4⤵
      System Location Discovery: System Language Discovery
      PID:4144

C:\Windows\SysWOW64\TXPlatforn.exe
C:\Windows\SysWOW64\TXPlatforn.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\SysWOW64\TXPlatforn.exe
  C:\Windows\SysWOW64\TXPlatforn.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:1852

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\8RKGM6DL.bat

Filesize
660B

MD5
36379b01b269c0e2dada4455414fce80

SHA1
03fc60e0762b106dcfa187867a87950e9500318f

SHA256
eeb75cabf0f4262e375ffae209943880a48262493092c26af9806af575abcef9

SHA512
d7d5d18e37e6656a701423947359e44218ba4fc93cfc5f967dcce7fa1d58cb93560e5ad43716e039463fadf6c478705d3a6b98bdb6a596e8a4d4e61a31e2ca30

Download Submit
C:\Users\Admin\AppData\Local\Temp\HD_28533b0bfef3b203a12954c73aaacf1bb4162cc1a897b99455f6c181bcd9f7c0.exe

Filesize
159KB

MD5
a9ff2c5f0c1c95624decbd86dc7c1d5b

SHA1
52f7c0181be308a2bab7a1f65dca4ef2045550f7

SHA256
d249b5db2e06dfe25e8783fe71ff7fbb50caf3a58631af9f2a4520b6f16b1c2d

SHA512
0f4c28ebe4a48df0d23bca6a97a19aa5a1d9058650f719738d88399179ae15ed3e583d41a4e3bf2c80268da2887ba72585fada8282ff6abada9ba0422008076c

Download Submit
C:\Users\Admin\AppData\Local\Temp\HD_X.dat

Filesize
732KB

MD5
3bf88b36764e81cc187440ee7730204f

SHA1
988e7d59ba4fa218dc048a197d4c2342c76abca2

SHA256
a61f9a5f4013c7ee7db50940bf61b9361bb395a27e832238db206406264d79df

SHA512
2d721d4bde2e59e8ea6fc84ef3b79ec78483b282cba9a20920dca6585bb82cb6344b1304271f44dff101d6f6ce3c65e58b8fdd0b06b1b2eba289bdb44d4d7b47

Download Submit
C:\Users\Admin\AppData\Local\Temp\RVN.exe

Filesize
377KB

MD5
80ade1893dec9cab7f2e63538a464fcc

SHA1
c06614da33a65eddb506db00a124a3fc3f5be02e

SHA256
57a920389c044e3f5cf93dabff67070b4511e79779b6f874e08f92d8b0d7afbd

SHA512
fffd4f3fccb5301b3c7a5b3bd92747f31549fbd9d0803fe5d502d1bb0ef979140988718c2ee1406ed3e755790d275185e120a56cbcb5ed2eadf62b5cdbfc4cc4

Download Submit
memory/1852-39-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/1852-38-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/1852-35-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/1852-31-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2660-21-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2660-33-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2660-19-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2660-23-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2660-22-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3464-40-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3720-15-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3720-12-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3720-11-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3720-9-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download