gh0strat | cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559

General

Target

cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559.exe
Size

83KB
MD5

4e969a3e3014194ed6e33f384fe3394c
SHA1

3209f7973906286f182dc1574c571356834c2b1c
SHA256

cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559
SHA512

ca88c9a6b493b658498de783d1b95cabbf8d7fd49c06636adb33c66a7bd861ea310c5484d92c293a75025b21e528b3581f170691c070161e40a0e51a48339501
SSDEEP

1536:nQgUoFley2HuI4eB7qsd1yre4zm4miCRv4KCrVFxOJ4rw4XKpf:mElKxd8rhzqiAw4Jzpf

Score

10^/10

gh0strat bootkit discovery persistence rat spyware stealer upx

Malware Config

Extracted

Family

gh0strat

C2

host123.zz.am:6658

http://23.104.160.115:8890/version.php

http://23.104.160.116:9963/

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

Blocklisted process makes network request 4 IoCs

flow	pid	Process
33	2424	rundll32.exe
40	2424	rundll32.exe
41	2424	rundll32.exe
62	2424	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
4868	efanin.exe

Loads dropped DLL 1 IoCs

pid	Process
2424	rundll32.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-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\wuyzvbe\\fpkbz.dll\",AbortProc"	rundll32.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)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.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	rundll32.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2612-0-0x0000000000400000-0x000000000041D000-memory.dmp	upx
behavioral2/memory/2612-2-0x0000000000400000-0x000000000041D000-memory.dmp	upx
behavioral2/files/0x000c000000023c15-4.dat	upx
behavioral2/memory/4868-8-0x0000000000400000-0x000000000041D000-memory.dmp	upx

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559.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	efanin.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
1824	cmd.exe
4164	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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4164	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2424	rundll32.exe
2424	rundll32.exe
2424	rundll32.exe
2424	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2424	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2612	cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559.exe
4868	efanin.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 1824	2612	cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559.exe	90
PID 2612 wrote to memory of 1824	2612	cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559.exe	90
PID 2612 wrote to memory of 1824	2612	cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559.exe	90
PID 1824 wrote to memory of 4164	1824	cmd.exe	92
PID 1824 wrote to memory of 4164	1824	cmd.exe	92
PID 1824 wrote to memory of 4164	1824	cmd.exe	92
PID 1824 wrote to memory of 4868	1824	cmd.exe	94
PID 1824 wrote to memory of 4868	1824	cmd.exe	94
PID 1824 wrote to memory of 4868	1824	cmd.exe	94
PID 4868 wrote to memory of 2424	4868	efanin.exe	95
PID 4868 wrote to memory of 2424	4868	efanin.exe	95
PID 4868 wrote to memory of 2424	4868	efanin.exe	95

C:\Users\Admin\AppData\Local\Temp\cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559.exe
"C:\Users\Admin\AppData\Local\Temp\cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\efanin.exe "C:\Users\Admin\AppData\Local\Temp\cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1824
- - 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:4164
- - \??\c:\efanin.exe
    c:\efanin.exe "C:\Users\Admin\AppData\Local\Temp\cfed7abc2cdce41348af42dd516e8731d4de0ceaa14c6c3a0e48ebd539e22559.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4868
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\wuyzvbe\fpkbz.dll",AbortProc c:\efanin.exe
      4⤵
      Blocklisted process makes network request
      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:2424

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:\efanin.exe

Filesize
83KB

MD5
fc32784d61408d73dae750119d974b7b

SHA1
afbde6123304489fdefb6c80f886dd80026b74b2

SHA256
5808fb74934b88fd8ee3b3607983871a49bb9dbbb72f0f784376b4fe3ea95f22

SHA512
0da8659ba2cbe1823a5d73ec2767ac909e59a6ca1b088932b56a867806af13709a221b051bc48d3e12a05f86fe6ccdf7f946f30e463a548ab1c5c01607bcb8f1

Download Submit
\??\c:\wuyzvbe\fpkbz.dll

Filesize
60KB

MD5
75e08aa9274df390fcdb1df3d0733bd5

SHA1
f3053cc10f33436aa1da7ec82a12ffdaff10ccfb

SHA256
42304221991ff2ea9d6c0252d42b90390caebc312a17126a4b13e9514f2b7d87

SHA512
dee8a07ca2142eb2ec1a5ce56af92605bb1c11e89da5d4335aee1098dc73375e422d9c53f201e571ff64b51c5cfa3928b1f26c0a23f4671dfbd91b1355d0e9db

Download Submit
memory/2424-11-0x0000000010000000-0x0000000010045000-memory.dmp

Filesize
276KB

Download
memory/2424-12-0x00000000009C0000-0x00000000009C1000-memory.dmp

Filesize
4KB

Download
memory/2424-13-0x0000000010000000-0x0000000010045000-memory.dmp

Filesize
276KB

Download
memory/2424-14-0x0000000010000000-0x0000000010045000-memory.dmp

Filesize
276KB

Download
memory/2424-15-0x0000000010000000-0x0000000010045000-memory.dmp

Filesize
276KB

Download
memory/2424-16-0x00000000009C0000-0x00000000009C1000-memory.dmp

Filesize
4KB

Download
memory/2612-0-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/2612-2-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/4868-8-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads