farfli | 64885e81ed4102cf983c24fd63a5bc66d2d65aca5c6df1f45fffa7b1ad72b268

Analysis

max time kernel
148s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260706-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
07/07/2026, 00:27

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General

Target
2026-07-06_e03ac17f49071f6bbfdcb13a95dfa69e_coinminer_elex_wannacry.exe
Size 132KB
Sample260707-ar3cdsbv3k
SHA256 64885e81ed4102cf983c24fd63a5bc66d2d65aca5c6df1f45fffa7b1ad72b268
MD5 e03ac17f49071f6bbfdcb13a95dfa69e
SHA1 1133b67ee4aba11a59d188c6ab08a8ef978823fb
SHA512 ad2a27f1d26376414013fec9d62bf96825a990b0356b10d158d2ab514749e80486f135e4bcf479436d3a61239eab956f248092936861b9fc1b98f86143fbcf9a
SSDEEP 1536:PWCfpn0RbXmUvElSdwS4ytneUDy9ZkM4A3FaJw/xfPWMDXKpQTi:PWmpn0RbXGxeeJ9w7EPWMWpZ
TLSH
T11CD3CF53AB7E84F6E0210C7406BA173543B5785A2B245773D388EE5EE872EC4EC3D25A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli gh0strat persistence rat spyware stealer upx

Malware Config

Extracted

Family

gh0strat

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

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli
Family: 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

Detects Farfli Backdoor 3 IoCs

resource	yara_rule
behavioral2/memory/1680-11-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli
behavioral2/memory/1680-12-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli
behavioral2/memory/1680-13-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/1680-11-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1680-12-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1680-13-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3428-0-0x0000000000400000-0x000000000041E000-memory.dmp	UPX
behavioral2/memory/3428-2-0x0000000000400000-0x000000000041E000-memory.dmp	UPX
behavioral2/files/0x00160000000115f1-3.dat	UPX
behavioral2/memory/4644-6-0x0000000000400000-0x000000000041E000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
1	1680	rundll32.exe
3	1680	rundll32.exe
4	1680	rundll32.exe
6	1680	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
4644	rbjczs.exe

Loads dropped DLL 1 IoCs

pid	Process
1680	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-1-5-21-515251955-468707340-1782030364-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\busvo\\vhmdnvdia.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)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	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/3428-0-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral2/memory/3428-2-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral2/files/0x00160000000115f1-3.dat	upx
behavioral2/memory/4644-6-0x0000000000400000-0x000000000041E000-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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rbjczs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-06_e03ac17f49071f6bbfdcb13a95dfa69e_coinminer_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
2408	cmd.exe
4392	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
4392	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1680	rundll32.exe
1680	rundll32.exe
1680	rundll32.exe
1680	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1680	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3428	2026-07-06_e03ac17f49071f6bbfdcb13a95dfa69e_coinminer_elex_wannacry.exe
4644	rbjczs.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3428 wrote to memory of 2408	3428	2026-07-06_e03ac17f49071f6bbfdcb13a95dfa69e_coinminer_elex_wannacry.exe	87
PID 2408 wrote to memory of 4392	2408	cmd.exe	89
PID 2408 wrote to memory of 4644	2408	cmd.exe	90
PID 4644 wrote to memory of 1680	4644	rbjczs.exe	91

C:\Users\Admin\AppData\Local\Temp\2026-07-06_e03ac17f49071f6bbfdcb13a95dfa69e_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-06_e03ac17f49071f6bbfdcb13a95dfa69e_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3428
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\rbjczs.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-06_e03ac17f49071f6bbfdcb13a95dfa69e_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2408
- - 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:4392
- - \??\c:\rbjczs.exe
    c:\rbjczs.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-06_e03ac17f49071f6bbfdcb13a95dfa69e_coinminer_elex_wannacry.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4644
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\busvo\vhmdnvdia.dll",AbortProc c:\rbjczs.exe
      4⤵
      Badlisted 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:1680

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

vhmdnvdia.dll

Path \??\c:\busvo\vhmdnvdia.dll
Size 60KB
SHA256 42304221991ff2ea9d6c0252d42b90390caebc312a17126a4b13e9514f2b7d87
MD5 75e08aa9274df390fcdb1df3d0733bd5
SHA1 f3053cc10f33436aa1da7ec82a12ffdaff10ccfb
SHA512 dee8a07ca2142eb2ec1a5ce56af92605bb1c11e89da5d4335aee1098dc73375e422d9c53f201e571ff64b51c5cfa3928b1f26c0a23f4671dfbd91b1355d0e9db
SSDEEP 1536:Itj4HbqT+M0L2J2US62eSBQno/CUVzsxeOPw:ItqeT+M02J25qnLUVzs9w
TLSH
T1D05301286F6D2EDDFA3152B1E0985093FBD98B03043FA24D2544777F7D829631A93BA4
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

rbjczs.exe

Path \??\c:\rbjczs.exe
Size 133KB
SHA256 6f6be682d170dfd4bdb92f80c3368d943f8ab418c6899a672fa94e36ba342bfa
MD5 9326b7a002744242a7dfda9cf4a5e16a
SHA1 70a4c8e57bdb4e1470a2e4af0b5d6cee9a537684
SHA512 8619047557a4bff5791156f34f63e3dd3a4612a10d1bf499a1918b8159117306e5a87ab3d8abe11c5f12eddc1d7230cf0ecf2e99a29055c2774de9a281e1e340
SSDEEP 1536:PWCfpn0RbXmUvElSdwS4ytneUDy9ZkM4A3FaJw/xfPWMDXKpQTv:PWmpn0RbXGxeeJ9w7EPWMWpI
TLSH
T13DD3BF53AB7E84F6E0210C7806BA173543B5685A2B245773D388EE5EEC71EC4EC3D25A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1680-9-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/1680-10-0x0000000002CE0000-0x0000000002CE1000-memory.dmp

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memory/1680-11-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/1680-12-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/1680-13-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/3428-0-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/3428-2-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4644-6-0x0000000000400000-0x000000000041E000-memory.dmp

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