gh0strat | bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7

Analysis

max time kernel
150s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
26/05/2024, 15:03

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General

Target
bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
Size 3.0MB
Sample240526-se2jfaad8v
SHA256 bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7
MD5 8dc3b2715db1fc59f204cb437c4b40be
SHA1 6df54ecb73c1a12cdeb2d245e9ac017826c61329
SHA512 1327c65742a980b7a963f61104de20e10deb0c73cca4724e0e2c3f358eb885b97e88d8417551c0af6adc7a123ca935d6c273b5cd031d3bcef0f5aa887d023082
SSDEEP 49152:809XJt4HIN2H2tFvduySPdDmn2d335wyQ/Dsc9UGwSAc8B2uU3g6ju8m:hZJt4HINy2Lk1Dmn2535w1/NjwSlA
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gh0strat purplefox bootkit persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 11 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/3484-6-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3484-7-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3484-10-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1828-17-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1828-16-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1828-25-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3936-27-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1828-15-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3936-30-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3936-34-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3936-51-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 11 IoCs

resource	yara_rule
behavioral2/memory/3484-6-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3484-7-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3484-10-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/1828-17-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/1828-16-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/1828-25-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3936-27-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/1828-15-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3936-30-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3936-34-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3936-51-0x0000000010000000-0x00000000101B6000-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
3484	RVN.exe
1828	TXPlatforn.exe
3936	TXPlatforn.exe
1160	HD_bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3484-4-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3484-6-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3484-7-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3484-10-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1828-13-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1828-17-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1828-16-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1828-25-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3936-27-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1828-15-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3936-30-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3936-34-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3936-51-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

Enumerates connected drives 3 TTPs 2 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\F:	HD_bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
File opened (read-only)	\??\D:	HD_bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	HD_bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.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

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Google\Chrome\Application\chrome.exe	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc.exe	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.exe	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4120	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4044	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
4044	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
3936	TXPlatforn.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3484	RVN.exe
Token: SeLoadDriverPrivilege	3936	TXPlatforn.exe
Token: 33	3936	TXPlatforn.exe
Token: SeIncBasePriorityPrivilege	3936	TXPlatforn.exe
Token: 33	3936	TXPlatforn.exe
Token: SeIncBasePriorityPrivilege	3936	TXPlatforn.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4044	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
4044	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4044 wrote to memory of 3484	4044	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe	82
PID 4044 wrote to memory of 3484	4044	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe	82
PID 4044 wrote to memory of 3484	4044	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe	82
PID 3484 wrote to memory of 3636	3484	RVN.exe	84
PID 3484 wrote to memory of 3636	3484	RVN.exe	84
PID 3484 wrote to memory of 3636	3484	RVN.exe	84
PID 1828 wrote to memory of 3936	1828	TXPlatforn.exe	85
PID 1828 wrote to memory of 3936	1828	TXPlatforn.exe	85
PID 1828 wrote to memory of 3936	1828	TXPlatforn.exe	85
PID 4044 wrote to memory of 1160	4044	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe	86
PID 4044 wrote to memory of 1160	4044	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe	86
PID 4044 wrote to memory of 1160	4044	bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe	86
PID 3636 wrote to memory of 4120	3636	cmd.exe	88
PID 3636 wrote to memory of 4120	3636	cmd.exe	88
PID 3636 wrote to memory of 4120	3636	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
"C:\Users\Admin\AppData\Local\Temp\bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4044
- 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
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3484
- - 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⤵
    - Suspicious use of WriteProcessMemory
    PID:3636
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 2 127.0.0.1
      4⤵
      Runs ping.exe
      PID:4120
- C:\Users\Admin\AppData\Local\Temp\HD_bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
  C:\Users\Admin\AppData\Local\Temp\HD_bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
  2⤵
  - Executes dropped EXE
  - Enumerates connected drives
  - Writes to the Master Boot Record (MBR)
  PID:1160

C:\Windows\SysWOW64\TXPlatforn.exe
C:\Windows\SysWOW64\TXPlatforn.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1828
- 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:3936

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

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

HD_X.dat

Path C:\Users\Admin\AppData\Local\Temp\HD_X.dat
Size 1.5MB
SHA256 2f88c8e1a34d477463ef76f5130394203810bd3a8efc1c7dfc1ba6be0aad20e2
MD5 152b706abb33e0783d0949a816651105
SHA1 9b7cbe1a291b7e42cbbd630559e1f1a0c82f3dd9
SHA512 f70cfdef354c263ac5b84e931ad2e2bbfe6a4dc40e911b1ea2c3ec8d480c4daa81f5e3d3504c8198ad3bce6a8048c4f7e1fdc96aeba8bbf6e2999fc35bbd5f2f
SSDEEP 24576:809tv9/7JtDElDEExIko2H2HESq2eWJ6MQjySjy+Zv1Dfun2Y:809XJt4HIN2H2tFvduySPdDmn2Y
MD5 SHA1 SHA512 SSDEEP

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HD_bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe

Path C:\Users\Admin\AppData\Local\Temp\HD_bfced6fa1129735a50ab82fe4806f9d561132179ac1e8dc4092e22d973cb30d7.exe
Size 1.5MB
SHA256 a28ba01431b15c9a79b0bfeda1d714b1c2a49ac823588904efaf94029c04bd00
MD5 318d6293168dd857d4d085cb62d69fbf
SHA1 06825c778e87ad182bf36427210f621a3f276b95
SHA512 239527bab5f8831993ebcc8e644d2968469b72af6be01f36d249e7645b8c8f8d2652274b9dad4083f961c10a5b51c356057d2bcf2022a56f57aafe5c77414928
SSDEEP 24576:GQ335wyxe/DF6ogc7MElXkGwStPuc8BAruU3g6ju8m:D335wyQ/Dsc9UGwSAc8B2uU3g6ju8m
MD5 SHA1 SHA512 SSDEEP

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RVN.exe

Path C:\Users\Admin\AppData\Local\Temp\RVN.exe
Size 377KB
SHA256 57a920389c044e3f5cf93dabff67070b4511e79779b6f874e08f92d8b0d7afbd
MD5 80ade1893dec9cab7f2e63538a464fcc
SHA1 c06614da33a65eddb506db00a124a3fc3f5be02e
SHA512 fffd4f3fccb5301b3c7a5b3bd92747f31549fbd9d0803fe5d502d1bb0ef979140988718c2ee1406ed3e755790d275185e120a56cbcb5ed2eadf62b5cdbfc4cc4
SSDEEP 6144:BEo7J1ixs4uVKE9rFEAHKThrBSq2hAzSM5mDo9lSJULHZqExlD2E1LxhJVwIe0Dy:Wo2HQVWAHkFSq2hAWJYlMUtrxlyuJVRq
MD5 SHA1 SHA512 SSDEEP

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memory/1828-25-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/1828-15-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/1828-13-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/1828-17-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/1828-16-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3484-10-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3484-7-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3484-6-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3484-4-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3936-27-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3936-30-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3936-34-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3936-51-0x0000000010000000-0x00000000101B6000-memory.dmp

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