farfli | b77c4a9f36b9946cfc0db10d3381291384fb887d87e0fc0b32eadde494de4154

General

Target
2026-08-09_0ecc4fe3c773547f6515fa23d9af16db_coinminer_elex_wannacry.exe
Size 236KB
Sample260809-hvysdawxdx
SHA256 b77c4a9f36b9946cfc0db10d3381291384fb887d87e0fc0b32eadde494de4154
MD5 0ecc4fe3c773547f6515fa23d9af16db
SHA1 fce4312f15e031c68a1367a63a5c63a1e8cab91a
SHA512 f3a622888824da5f4167bbb553a315e107571b2e302eae1d4ae16242f127d8b9007fcee03415494f29c2a8ab356f564f0dfbfa6c0a87dba5cff8964635f2defe
SSDEEP 6144:yOFgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo7:zgmYA/nsYf8QdsINkZ6CQetFa
TLSH
T1C434F18136A5CD77F06217BD0D7B163A8136BE691B00B09BD3C4AD4FB4319E4AE2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

C2

98.126.40.18:3204
http://98.126.40.19:805/index.php
http://98.126.40.20:803/

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 2 IoCs

resource	yara_rule
behavioral2/memory/4768-8-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral2/memory/4768-11-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/4768-8-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4768-11-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000016cdc-1.dat	UPX

Deletes itself 1 IoCs

pid	Process
4436	mdpjr.exe

Executes dropped EXE 2 IoCs

pid	Process
4436	mdpjr.exe
4768	fve.exe

Loads dropped DLL 1 IoCs

pid	Process
4768	fve.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-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\zsyrucs\\fve.exe \"c:\\Program Files\\zsyrucs\\fvejc.dll\",Interface"	fve.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)	\??\i:	fve.exe
File opened (read-only)	\??\o:	fve.exe
File opened (read-only)	\??\r:	fve.exe
File opened (read-only)	\??\t:	fve.exe
File opened (read-only)	\??\k:	fve.exe
File opened (read-only)	\??\p:	fve.exe
File opened (read-only)	\??\q:	fve.exe
File opened (read-only)	\??\s:	fve.exe
File opened (read-only)	\??\x:	fve.exe
File opened (read-only)	\??\a:	fve.exe
File opened (read-only)	\??\d:	fve.exe
File opened (read-only)	\??\g:	fve.exe
File opened (read-only)	\??\j:	fve.exe
File opened (read-only)	\??\l:	fve.exe
File opened (read-only)	\??\m:	fve.exe
File opened (read-only)	\??\n:	fve.exe
File opened (read-only)	\??\w:	fve.exe
File opened (read-only)	\??\b:	fve.exe
File opened (read-only)	\??\h:	fve.exe
File opened (read-only)	\??\u:	fve.exe
File opened (read-only)	\??\v:	fve.exe
File opened (read-only)	\??\y:	fve.exe
File opened (read-only)	\??\z:	fve.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	fve.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\zsyrucs	mdpjr.exe
File created	\??\c:\Program Files\zsyrucs\fvejc.dll	mdpjr.exe
File created	\??\c:\Program Files\zsyrucs\fve.exe	mdpjr.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4172	cmd.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	mdpjr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fve.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-09_0ecc4fe3c773547f6515fa23d9af16db_coinminer_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
4172	cmd.exe
5004	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	fve.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	fve.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5004	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4768	fve.exe
4768	fve.exe
4768	fve.exe
4768	fve.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4768	fve.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3412	2026-08-09_0ecc4fe3c773547f6515fa23d9af16db_coinminer_elex_wannacry.exe
4436	mdpjr.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3412 wrote to memory of 4172	3412	2026-08-09_0ecc4fe3c773547f6515fa23d9af16db_coinminer_elex_wannacry.exe	89
PID 4172 wrote to memory of 5004	4172	cmd.exe	91
PID 4172 wrote to memory of 4436	4172	cmd.exe	92
PID 4436 wrote to memory of 4768	4436	mdpjr.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-09_0ecc4fe3c773547f6515fa23d9af16db_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_0ecc4fe3c773547f6515fa23d9af16db_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3412
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\mdpjr.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_0ecc4fe3c773547f6515fa23d9af16db_coinminer_elex_wannacry.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4172
- - 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:5004
- - C:\Users\Admin\AppData\Local\Temp\mdpjr.exe
    C:\Users\Admin\AppData\Local\Temp\\mdpjr.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_0ecc4fe3c773547f6515fa23d9af16db_coinminer_elex_wannacry.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:4436
  - - \??\c:\Program Files\zsyrucs\fve.exe
      "c:\Program Files\zsyrucs\fve.exe" "c:\Program Files\zsyrucs\fvejc.dll",Interface C:\Users\Admin\AppData\Local\Temp\mdpjr.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:4768

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

fve.exe

Path C:\Program Files\zsyrucs\fve.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

mdpjr.exe

Path C:\Users\Admin\AppData\Local\Temp\mdpjr.exe
Size 236KB
SHA256 b42d7a56a253ef29263b7ad6b444331c39cd036ebf3377207b83a32924187f12
MD5 b20e9d0eae0a5d5959b18bcf77d464a9
SHA1 46149aaae639f1a9ae0e956acdc1059ab08a8a8b
SHA512 75cee4ce1b7b7b45ba6f138ca5c2a6081af662e4d46e8714d27194b130006ac968fff8046ec567525fc253c960f7eb347c34ab49c72b3ff64d7dc671042a8a29
SSDEEP 6144:yOFgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo4:zgmYA/nsYf8QdsINkZ6CQetFv
TLSH
T12534F18136A5CD77F06217BD0D7B563A8136BE691B00B49BD3C4AD4FB4319E4AE3E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

fvejc.dll

Path \??\c:\Program Files\zsyrucs\fvejc.dll
Size 168KB
SHA256 95436fa52de5eb9e93fcee0cfb268ed65517117f235eaab6769b6aa8c95a69c3
MD5 225bb7679a01c92259c5a449ace16c8c
SHA1 a3e30fdee8a1a4a7b0aecba9634172cd517dffea
SHA512 7244391ebed07f1bea3114aae1f2f65efd96512ae7fc5de46d1635920e5e05a7a2ddcda672d0a3273bee3c848c7b277dc3fb9fd4dbbd82ec90f3bd12137925ad
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZM0:SJ8T1xE3ocg9f2nfLnwYsxf2ZJ
TLSH
T13FF312D3EFA649E0C4361BB07C53C10FB8620CA498725B5543D9FEEA3DA668E453D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4768-7-0x0000000010000000-0x000000001006D000-memory.dmp

Download

memory/4768-8-0x0000000010000000-0x000000001006D000-memory.dmp

Download

memory/4768-11-0x0000000010000000-0x000000001006D000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads