gh0strat | 22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724

General

Target

22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe
Size

318KB
MD5

78f9918d06e51b5b4e86e241c95bdbc6
SHA1

fd2331b18c165e2771ebd20d83fd671d9a0a6f7d
SHA256

22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724
SHA512

cd7730cc3de8417303f9b9ff675281f17ab3e36b76a6c5d81f70e822f05c74d15727df96c6d7af7609b9fa9895b5788cebc6df64abaa86b6ffb1cb2801cbaa1a
SSDEEP

6144:ORoSgWbzYds0SfxsTxt3YeWH8k+p+Nj8DmV9Z3+jH:RSfbzc8GrYdcb88Dw+z

Score

10^/10

gh0strat bootkit discovery persistence rat spyware stealer upx

Malware Config

Extracted

Family

gh0strat

C2

host123.zz.am:6658

http://107.163.43.235:12388/

http://107.163.43.236:10289/support.php

Attributes

user_agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C))

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)

Signatures

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

Deletes itself 1 IoCs

pid	Process
4856	ulfqsylc.exe

Executes dropped EXE 2 IoCs

pid	Process
4856	ulfqsylc.exe
2852	hmxzwcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2852	hmxzwcl.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-83325578-304917428-1200496059-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\flate = "c:\\Program Files\\gfzls\\hmxzwcl.exe \"c:\\Program Files\\gfzls\\hmxzwcl.dll\",inflate"	hmxzwcl.exe

Enumerates connected drives 3 TTPs 23 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)	\??\m:	hmxzwcl.exe
File opened (read-only)	\??\p:	hmxzwcl.exe
File opened (read-only)	\??\r:	hmxzwcl.exe
File opened (read-only)	\??\t:	hmxzwcl.exe
File opened (read-only)	\??\l:	hmxzwcl.exe
File opened (read-only)	\??\o:	hmxzwcl.exe
File opened (read-only)	\??\q:	hmxzwcl.exe
File opened (read-only)	\??\u:	hmxzwcl.exe
File opened (read-only)	\??\w:	hmxzwcl.exe
File opened (read-only)	\??\y:	hmxzwcl.exe
File opened (read-only)	\??\a:	hmxzwcl.exe
File opened (read-only)	\??\n:	hmxzwcl.exe
File opened (read-only)	\??\s:	hmxzwcl.exe
File opened (read-only)	\??\e:	hmxzwcl.exe
File opened (read-only)	\??\g:	hmxzwcl.exe
File opened (read-only)	\??\i:	hmxzwcl.exe
File opened (read-only)	\??\v:	hmxzwcl.exe
File opened (read-only)	\??\x:	hmxzwcl.exe
File opened (read-only)	\??\z:	hmxzwcl.exe
File opened (read-only)	\??\b:	hmxzwcl.exe
File opened (read-only)	\??\h:	hmxzwcl.exe
File opened (read-only)	\??\j:	hmxzwcl.exe
File opened (read-only)	\??\k:	hmxzwcl.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	hmxzwcl.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/220-0-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral2/memory/220-2-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral2/files/0x00060000000236ea-4.dat	upx
behavioral2/memory/4856-10-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral2/files/0x000700000001e6aa-11.dat	upx
behavioral2/memory/2852-14-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/2852-15-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/2852-18-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/2852-20-0x0000000010000000-0x000000001004B000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\gfzls	ulfqsylc.exe
File created	\??\c:\Program Files\gfzls\hmxzwcl.dll	ulfqsylc.exe
File created	\??\c:\Program Files\gfzls\hmxzwcl.exe	ulfqsylc.exe
File opened for modification	\??\c:\Program Files\gfzls\hmxzwcl.exe	ulfqsylc.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	22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe
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	ulfqsylc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hmxzwcl.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
1608	cmd.exe
2756	PING.EXE

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	hmxzwcl.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	hmxzwcl.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2756	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2852	hmxzwcl.exe
2852	hmxzwcl.exe
2852	hmxzwcl.exe
2852	hmxzwcl.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2852	hmxzwcl.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
220	22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe
4856	ulfqsylc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 220 wrote to memory of 1608	220	22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe	88
PID 220 wrote to memory of 1608	220	22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe	88
PID 220 wrote to memory of 1608	220	22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe	88
PID 1608 wrote to memory of 2756	1608	cmd.exe	90
PID 1608 wrote to memory of 2756	1608	cmd.exe	90
PID 1608 wrote to memory of 2756	1608	cmd.exe	90
PID 1608 wrote to memory of 4856	1608	cmd.exe	92
PID 1608 wrote to memory of 4856	1608	cmd.exe	92
PID 1608 wrote to memory of 4856	1608	cmd.exe	92
PID 4856 wrote to memory of 2852	4856	ulfqsylc.exe	93
PID 4856 wrote to memory of 2852	4856	ulfqsylc.exe	93
PID 4856 wrote to memory of 2852	4856	ulfqsylc.exe	93

C:\Users\Admin\AppData\Local\Temp\22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe
"C:\Users\Admin\AppData\Local\Temp\22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:220
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ulfqsylc.exe "C:\Users\Admin\AppData\Local\Temp\22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1608
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2756
- - C:\Users\Admin\AppData\Local\Temp\ulfqsylc.exe
    C:\Users\Admin\AppData\Local\Temp\\ulfqsylc.exe "C:\Users\Admin\AppData\Local\Temp\22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4856
  - - \??\c:\Program Files\gfzls\hmxzwcl.exe
      "c:\Program Files\gfzls\hmxzwcl.exe" "c:\Program Files\gfzls\hmxzwcl.dll",inflate C:\Users\Admin\AppData\Local\Temp\ulfqsylc.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2852

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c c:\Program Files\gfzls\hmxzwcl.exe "c:\Program Files\gfzls\hmxzwcl.dll",inflate
1⤵
PID:1932

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

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

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

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\gfzls\hmxzwcl.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

Filesize
319KB

MD5
7276308873eb373fac839603fd80cef1

SHA1
64dfc012d5c6a3224c9eba1d306c612bc7749590

SHA256
1ab2e94d1bdd03e576eb2faeb3f8cca4c412d5ee48fdb3d6910edc16922a142b

SHA512
d1635865dc08ca9ae41465e04f3257ca314ad554ff29848022f766fc3f0574fd5dcdbd2cbccf464f75318e1e13b12cd85f4f40f79bd2026689863d44279b92f3

Download Submit
\??\c:\Program Files\gfzls\hmxzwcl.dll

Filesize
134KB

MD5
fc62aed8c5a39c27b2b2a6c75a5b3823

SHA1
ba7c5eece6e33ec412bb55e66e14e0960a1d92eb

SHA256
d0d50e80c3010627248cbeb8bfe3583da9425c39ebc31474f8284a6b0cd4df1d

SHA512
f2bb06d245a6d970091cf5289ccaa9a26220e3d95481201d3b9a6a2710b2a3b217741f77a99819eff5b817698b065887eaeb8c402ec2d20d7e40e698986d997e

Download Submit
memory/220-0-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/220-2-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2852-14-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2852-15-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2852-18-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2852-20-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4856-10-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads