gh0strat | 2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b

General

Target

2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b.exe
Size

207KB
MD5

ec117b61c9f9d18adb39633f504196a9
SHA1

daeee2a39e1f6474bef1199bb17f82f4648457f7
SHA256

2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b
SHA512

bb90e19147e786829da21bf5cb6ed310b65ca539424fa715d7388c7e2db531ca972114041421f7e582bac822cf40ff556625f937bb8ec23a2bd2d6d2ab60fb43
SSDEEP

3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTF:X2vnSwjaOcADw9cUeCOf

Score

10^/10

gh0strat bootkit discovery persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

C2

107.163.241.193:6520

http://107.163.241.181:16300/

http://107.163.241.182:12354/login.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
2492	bbcfj.exe

Executes dropped EXE 2 IoCs

pid	Process
2492	bbcfj.exe
2496	nbs.exe

Loads dropped DLL 7 IoCs

pid	Process
2544	cmd.exe
2544	cmd.exe
2492	bbcfj.exe
2496	nbs.exe
2496	nbs.exe
2496	nbs.exe
2496	nbs.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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\efsif\\nbs.exe \"c:\\Program Files\\efsif\\nbsao.dll\",Compliance"	nbs.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)	\??\g:	nbs.exe
File opened (read-only)	\??\j:	nbs.exe
File opened (read-only)	\??\l:	nbs.exe
File opened (read-only)	\??\n:	nbs.exe
File opened (read-only)	\??\w:	nbs.exe
File opened (read-only)	\??\z:	nbs.exe
File opened (read-only)	\??\k:	nbs.exe
File opened (read-only)	\??\s:	nbs.exe
File opened (read-only)	\??\u:	nbs.exe
File opened (read-only)	\??\v:	nbs.exe
File opened (read-only)	\??\m:	nbs.exe
File opened (read-only)	\??\p:	nbs.exe
File opened (read-only)	\??\t:	nbs.exe
File opened (read-only)	\??\x:	nbs.exe
File opened (read-only)	\??\y:	nbs.exe
File opened (read-only)	\??\a:	nbs.exe
File opened (read-only)	\??\b:	nbs.exe
File opened (read-only)	\??\e:	nbs.exe
File opened (read-only)	\??\h:	nbs.exe
File opened (read-only)	\??\i:	nbs.exe
File opened (read-only)	\??\o:	nbs.exe
File opened (read-only)	\??\q:	nbs.exe
File opened (read-only)	\??\r:	nbs.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	nbs.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\efsif	bbcfj.exe
File created	\??\c:\Program Files\efsif\nbsao.dll	bbcfj.exe
File created	\??\c:\Program Files\efsif\nbs.exe	bbcfj.exe
File opened for modification	\??\c:\Program Files\efsif\nbs.exe	bbcfj.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	2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b.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	bbcfj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nbs.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
2544	cmd.exe
2576	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	nbs.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	nbs.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2576	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2496	nbs.exe
2496	nbs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2496	nbs.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1812	2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b.exe
2492	bbcfj.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 2544	1812	2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b.exe	31
PID 1812 wrote to memory of 2544	1812	2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b.exe	31
PID 1812 wrote to memory of 2544	1812	2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b.exe	31
PID 1812 wrote to memory of 2544	1812	2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b.exe	31
PID 2544 wrote to memory of 2576	2544	cmd.exe	33
PID 2544 wrote to memory of 2576	2544	cmd.exe	33
PID 2544 wrote to memory of 2576	2544	cmd.exe	33
PID 2544 wrote to memory of 2576	2544	cmd.exe	33
PID 2544 wrote to memory of 2492	2544	cmd.exe	34
PID 2544 wrote to memory of 2492	2544	cmd.exe	34
PID 2544 wrote to memory of 2492	2544	cmd.exe	34
PID 2544 wrote to memory of 2492	2544	cmd.exe	34
PID 2492 wrote to memory of 2496	2492	bbcfj.exe	35
PID 2492 wrote to memory of 2496	2492	bbcfj.exe	35
PID 2492 wrote to memory of 2496	2492	bbcfj.exe	35
PID 2492 wrote to memory of 2496	2492	bbcfj.exe	35

C:\Users\Admin\AppData\Local\Temp\2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b.exe
"C:\Users\Admin\AppData\Local\Temp\2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\bbcfj.exe "C:\Users\Admin\AppData\Local\Temp\2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2544
- - 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:2576
- - C:\Users\Admin\AppData\Local\Temp\bbcfj.exe
    C:\Users\Admin\AppData\Local\Temp\\bbcfj.exe "C:\Users\Admin\AppData\Local\Temp\2b6f87ec9fc09c492daa8de70e2765646e1a191024f3201fcd47e5105e6ac46b.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2492
  - - \??\c:\Program Files\efsif\nbs.exe
      "c:\Program Files\efsif\nbs.exe" "c:\Program Files\efsif\nbsao.dll",Compliance C:\Users\Admin\AppData\Local\Temp\bbcfj.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:2496

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\efsif\nbsao.dll

Filesize
141KB

MD5
59d7b0b9b8f9814d786d8684b0b61bda

SHA1
7a7eec32d07ab77cd42180ff2ae2f1e52205b0e3

SHA256
688ae8f8d95f086f933510295d71c4813575c95016884c1276027fdef5fdf647

SHA512
88501530de5868a11e597991480c18c10c605fe8a561a921abf571f36b0ac3833c7fd5ff93a67006b68fc884189f72fcedc8c345f387c4120264b217591bb196

Download Submit
\Program Files\efsif\nbs.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\Users\Admin\AppData\Local\Temp\bbcfj.exe

Filesize
208KB

MD5
1cbaf26c86246e68a8e3cf7772a4f1f8

SHA1
ae9aeba17cb339daf81e0cad9b55cba1cbf556e0

SHA256
ca00666e76815174046d1fa9aa0e7086b5d37f88a52e752bd8515aeadff61dd1

SHA512
0f875b541b1b7bed23439aca7b644968e84d8467480600fc80c3ba69f1b01e9daf0b48a7721354ab66e3e0d1de35636b064ceeb649c6c4e7dfecccbd52305c1b

Download Submit
memory/1812-1-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/1812-2-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/1812-4-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/1812-0-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2492-11-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2492-10-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2492-18-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2496-26-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2496-27-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2496-28-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2496-31-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2544-8-0x00000000001C0000-0x000000000020A000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads