gh0strat | 5d58b6a597af3f62350210bf7787ae6f95dfe339f78f4cd73532d58e437fee31

Analysis

max time kernel
77s
max time network
21s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
20-12-2024 03:49

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General

Target

SoftUpdate.exe
Size

27.3MB
MD5

7242a7175a802d9d42020d49d302c8ca
SHA1

ff0f6adcce3d43a3aca6dc07bd58a4d8a981db7a
SHA256

5d58b6a597af3f62350210bf7787ae6f95dfe339f78f4cd73532d58e437fee31
SHA512

32277c1711aeec60349f4b2987c6fefe6059d40ad04abdc6f49c71cf89d59fdfcd1da5b4a59dfe47bbb15541fcf6a008ba5ce20689d5570a1c967d51c99d04c5
SSDEEP

393216:AbpnKq10jUmMdJKOQIWx0XsiK5isSG90AQ/WF80uVgV3bo01gZeFIqCnzieQb1tk:op0gJKObG9zpQ0rhV3bb1xFI7xQb1tM1

Score

10^/10

gh0strat purplefox discovery rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 1 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/2816-17406-0x0000000000400000-0x0000000001F59000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/memory/2816-17406-0x0000000000400000-0x0000000001F59000-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
Gh0strat family
gh0strat
PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox
Purplefox family
purplefox

Deletes itself 1 IoCs

pid	Process
3868	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
9488	Kbskb.exe
6304	Kbskb.exe

Loads dropped DLL 1 IoCs

pid	Process
9488	Kbskb.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Kbskb.exe	SoftUpdate.exe
File opened for modification	C:\Windows\SysWOW64\Kbskb.exe	SoftUpdate.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 10 IoCs

pid	Process
2816	SoftUpdate.exe
2816	SoftUpdate.exe
2816	SoftUpdate.exe
2816	SoftUpdate.exe
2816	SoftUpdate.exe
2816	SoftUpdate.exe
2816	SoftUpdate.exe
9488	Kbskb.exe
2816	SoftUpdate.exe
9488	Kbskb.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	SoftUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Kbskb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Kbskb.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
3868	cmd.exe
8312	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
8312	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2816	SoftUpdate.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2816 wrote to memory of 3868	2816	SoftUpdate.exe	31
PID 2816 wrote to memory of 3868	2816	SoftUpdate.exe	31
PID 2816 wrote to memory of 3868	2816	SoftUpdate.exe	31
PID 2816 wrote to memory of 3868	2816	SoftUpdate.exe	31
PID 2816 wrote to memory of 3868	2816	SoftUpdate.exe	31
PID 2816 wrote to memory of 3868	2816	SoftUpdate.exe	31
PID 2816 wrote to memory of 3868	2816	SoftUpdate.exe	31
PID 9488 wrote to memory of 6304	9488	Kbskb.exe	32
PID 9488 wrote to memory of 6304	9488	Kbskb.exe	32
PID 9488 wrote to memory of 6304	9488	Kbskb.exe	32
PID 9488 wrote to memory of 6304	9488	Kbskb.exe	32
PID 3868 wrote to memory of 8312	3868	cmd.exe	34
PID 3868 wrote to memory of 8312	3868	cmd.exe	34
PID 3868 wrote to memory of 8312	3868	cmd.exe	34
PID 3868 wrote to memory of 8312	3868	cmd.exe	34
PID 3868 wrote to memory of 8312	3868	cmd.exe	34
PID 3868 wrote to memory of 8312	3868	cmd.exe	34
PID 3868 wrote to memory of 8312	3868	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\SoftUpdate.exe
"C:\Users\Admin\AppData\Local\Temp\SoftUpdate.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- 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\SOFTUP~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3868
- - 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:8312

C:\Windows\SysWOW64\Kbskb.exe
C:\Windows\SysWOW64\Kbskb.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:9488
- C:\Windows\SysWOW64\Kbskb.exe
  C:\Windows\SysWOW64\Kbskb.exe -acsi
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:6304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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:\Windows\SysWOW64\Kbskb.exe

Filesize
27.3MB

MD5
7242a7175a802d9d42020d49d302c8ca

SHA1
ff0f6adcce3d43a3aca6dc07bd58a4d8a981db7a

SHA256
5d58b6a597af3f62350210bf7787ae6f95dfe339f78f4cd73532d58e437fee31

SHA512
32277c1711aeec60349f4b2987c6fefe6059d40ad04abdc6f49c71cf89d59fdfcd1da5b4a59dfe47bbb15541fcf6a008ba5ce20689d5570a1c967d51c99d04c5

Download Submit
memory/2816-857-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-1-0x00000000024D0000-0x0000000004029000-memory.dmp

Filesize
27.3MB

Download
memory/2816-3-0x0000000076BD0000-0x0000000076C17000-memory.dmp

Filesize
284KB

Download
memory/2816-860-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-824-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-822-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-820-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-818-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-814-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-813-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-828-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-830-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-832-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-834-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-836-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-842-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-852-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-0-0x0000000000400000-0x0000000001F59000-memory.dmp

Filesize
27.3MB

Download
memory/2816-816-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-2-0x00000000024D0000-0x0000000004029000-memory.dmp

Filesize
27.3MB

Download
memory/2816-840-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-839-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-844-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-846-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-850-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-848-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-854-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-858-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-862-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-874-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-872-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-870-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-868-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-866-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-864-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-826-0x0000000003F80000-0x0000000004091000-memory.dmp

Filesize
1.1MB

Download
memory/2816-17406-0x0000000000400000-0x0000000001F59000-memory.dmp

Filesize
27.3MB

Download