gh0strat | 36f13661f39c9bff3e4fd6be7a5f0f951b0d4db23b8114fb1b84871d76efa11b

General

Target

enlpu.dll
Size

50.2MB
MD5

16a2f5d1ac6a7f134d808050c3697a68
SHA1

d192bcedbedec45f8770bf1b225936862aa78727
SHA256

c57b86b7e816cddb68e0903b12c30bb0495ca4cdf69f5dee9fc281eea3cd39ca
SHA512

dbb163f0fee43a2ffe9cbaca0aa8542a70570eb527efaee44748666b09d75db91f51826adbd845715633c359423cb2ab66ef8c758b62c05152ee7b9ea1296659
SSDEEP

3072:tSorJcpkszwTzM6ZCtOSMiwO2njCampn6VwJ3VY0yX6a4:tSbWsazMzMiunZmd6VwJFY0yX6V

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral3/memory/1564-0-0x00000000002D0000-0x000000000033E000-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

Blocklisted process makes network request 16 IoCs

flow	pid	Process
4	1564	rundll32.exe
5	1564	rundll32.exe
7	1564	rundll32.exe
9	1564	rundll32.exe
13	1564	rundll32.exe
15	1564	rundll32.exe
17	1564	rundll32.exe
27	1564	rundll32.exe
29	1564	rundll32.exe
30	1564	rundll32.exe
32	1564	rundll32.exe
34	1564	rundll32.exe
35	1564	rundll32.exe
36	1564	rundll32.exe
37	1564	rundll32.exe
39	1564	rundll32.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Active Setup\Installed Components	Explorer.EXE

System Location Discovery: System Language Discovery 1 TTPs 4 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	Userinit.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	runonce.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BCSSync.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	runonce.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	runonce.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	Explorer.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_Classes\Local Settings	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1564	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2960	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2960	Explorer.EXE
Token: SeShutdownPrivilege	2960	Explorer.EXE
Token: SeShutdownPrivilege	2960	Explorer.EXE
Token: SeShutdownPrivilege	2960	Explorer.EXE
Token: SeShutdownPrivilege	2960	Explorer.EXE
Token: SeShutdownPrivilege	2960	Explorer.EXE
Token: SeShutdownPrivilege	2960	Explorer.EXE
Token: SeShutdownPrivilege	2960	Explorer.EXE
Token: SeShutdownPrivilege	2960	Explorer.EXE
Token: SeShutdownPrivilege	2960	Explorer.EXE
Token: SeShutdownPrivilege	2960	Explorer.EXE
Token: SeShutdownPrivilege	2960	Explorer.EXE

Suspicious use of FindShellTrayWindow 28 IoCs

pid	Process
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE

Suspicious use of SendNotifyMessage 17 IoCs

pid	Process
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE
2960	Explorer.EXE

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 1564	2412	rundll32.exe	31
PID 2412 wrote to memory of 1564	2412	rundll32.exe	31
PID 2412 wrote to memory of 1564	2412	rundll32.exe	31
PID 2412 wrote to memory of 1564	2412	rundll32.exe	31
PID 2412 wrote to memory of 1564	2412	rundll32.exe	31
PID 2412 wrote to memory of 1564	2412	rundll32.exe	31
PID 2412 wrote to memory of 1564	2412	rundll32.exe	31
PID 1564 wrote to memory of 3016	1564	rundll32.exe	32
PID 1564 wrote to memory of 3016	1564	rundll32.exe	32
PID 1564 wrote to memory of 3016	1564	rundll32.exe	32
PID 1564 wrote to memory of 3016	1564	rundll32.exe	32
PID 3016 wrote to memory of 2960	3016	Userinit.exe	33
PID 3016 wrote to memory of 2960	3016	Userinit.exe	33
PID 3016 wrote to memory of 2960	3016	Userinit.exe	33
PID 3016 wrote to memory of 2960	3016	Userinit.exe	33
PID 2960 wrote to memory of 1444	2960	Explorer.EXE	34
PID 2960 wrote to memory of 1444	2960	Explorer.EXE	34
PID 2960 wrote to memory of 1444	2960	Explorer.EXE	34
PID 2960 wrote to memory of 2388	2960	Explorer.EXE	35
PID 2960 wrote to memory of 2388	2960	Explorer.EXE	35
PID 2960 wrote to memory of 2388	2960	Explorer.EXE	35
PID 2960 wrote to memory of 2388	2960	Explorer.EXE	35
PID 2388 wrote to memory of 1704	2388	runonce.exe	36
PID 2388 wrote to memory of 1704	2388	runonce.exe	36
PID 2388 wrote to memory of 1704	2388	runonce.exe	36
PID 2388 wrote to memory of 1704	2388	runonce.exe	36

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\enlpu.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\enlpu.dll,#1
  2⤵
  - Blocklisted process makes network request
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1564
- - C:\Windows\SysWOW64\Userinit.exe
    Userinit.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3016
  - - C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      4⤵
      Boot or Logon Autostart Execution: Active Setup
      Modifies registry class
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of FindShellTrayWindow
      Suspicious use of SendNotifyMessage
      Suspicious use of WriteProcessMemory
      PID:2960
    - - C:\Windows\System32\dzuhbf.exe
        
        "C:\Windows\System32\dzuhbf.exe"
        5⤵
        
        PID:1444
    - - C:\Windows\SysWOW64\runonce.exe
        
        C:\Windows\SysWOW64\runonce.exe /Run6432
        5⤵
        System Location Discovery: System Language Discovery
        Checks processor information in registry
        Suspicious use of WriteProcessMemory
        
        PID:2388
      - C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe
        
        "C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe" /DelayServices
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:1704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Active Setup

1

T1547.014

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Active Setup

1

T1547.014

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357

Filesize
1KB

MD5
a266bb7dcc38a562631361bbf61dd11b

SHA1
3b1efd3a66ea28b16697394703a72ca340a05bd5

SHA256
df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

SHA512
0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

Filesize
242B

MD5
41e23954b2e35167312f692bba27a660

SHA1
55d98d3c570716223dea26a448371d37f5ce676b

SHA256
2739dae91124f95f8fe0ac2617a8bf587b84d95978991f9c7a805e128cbee512

SHA512
3fb76150535b7777463e55f5508a89082f2a0f69c36571d809d4625b26d3f1d535dc5ee34a402320f2647609f8b85aaeb73e9131d21d4037a606737edb251220

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\AS91FDNI\ips138[1].htm

Filesize
162B

MD5
4f8e702cc244ec5d4de32740c0ecbd97

SHA1
3adb1f02d5b6054de0046e367c1d687b6cdf7aff

SHA256
9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a

SHA512
21047fea5269fee75a2a187aa09316519e35068cb2f2f76cfaf371e5224445e9d5c98497bd76fb9608d2b73e9dac1a3f5bfadfdc4623c479d53ecf93d81d3c9f

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabF308.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarF369.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/1564-0-0x00000000002D0000-0x000000000033E000-memory.dmp

Filesize
440KB

Download
memory/2960-153-0x0000000002630000-0x0000000002640000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads