farfli | e2a0f297d440612c395f88722aaaac69cd2f2fafb5ada64810adfbc114f72050

General

Target
2026-07-02_a7fa846394da76d0ff3cf6d85e2d8080_coinminer_elex_wannacry.exe
Size 234KB
Sample260702-2jsa1acw8l
SHA256 e2a0f297d440612c395f88722aaaac69cd2f2fafb5ada64810adfbc114f72050
MD5 a7fa846394da76d0ff3cf6d85e2d8080
SHA1 ff48e8dc94d3dac48b86a1392ffa9c72f7dc8044
SHA512 f21e3b939af05e20655929400572649af04eaf7800fdf84b59c9a997cf2e58079e2de28b30aa79dab0561f849f7a76f7472f3fcd60496523a08d49a82e8ba75b
SSDEEP 6144:yOFgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo:zgmYA/nsYf8QdsINkZ6CQetF
TLSH
T1E834F18136A6CD77F06217BD0D7B563A8136BE590B00B49BD3C4AD4FB4359E4AE2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery 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/3796-8-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral2/memory/3796-11-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/3796-8-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3796-11-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x002b000000011556-1.dat	UPX

Deletes itself 1 IoCs

pid	Process
2436	xgybtd.exe

Executes dropped EXE 2 IoCs

pid	Process
2436	xgybtd.exe
3796	hdhynwgrb.exe

Loads dropped DLL 1 IoCs

pid	Process
3796	hdhynwgrb.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-1-5-21-1935666426-3801330415-1166019131-1000\Software\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\uwter\\hdhynwgrb.exe \"c:\\Program Files\\uwter\\hdhynwgrb.dll\",Interface"	hdhynwgrb.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)	\??\u:	hdhynwgrb.exe
File opened (read-only)	\??\a:	hdhynwgrb.exe
File opened (read-only)	\??\d:	hdhynwgrb.exe
File opened (read-only)	\??\l:	hdhynwgrb.exe
File opened (read-only)	\??\n:	hdhynwgrb.exe
File opened (read-only)	\??\r:	hdhynwgrb.exe
File opened (read-only)	\??\v:	hdhynwgrb.exe
File opened (read-only)	\??\w:	hdhynwgrb.exe
File opened (read-only)	\??\y:	hdhynwgrb.exe
File opened (read-only)	\??\i:	hdhynwgrb.exe
File opened (read-only)	\??\o:	hdhynwgrb.exe
File opened (read-only)	\??\z:	hdhynwgrb.exe
File opened (read-only)	\??\k:	hdhynwgrb.exe
File opened (read-only)	\??\p:	hdhynwgrb.exe
File opened (read-only)	\??\t:	hdhynwgrb.exe
File opened (read-only)	\??\x:	hdhynwgrb.exe
File opened (read-only)	\??\b:	hdhynwgrb.exe
File opened (read-only)	\??\g:	hdhynwgrb.exe
File opened (read-only)	\??\h:	hdhynwgrb.exe
File opened (read-only)	\??\j:	hdhynwgrb.exe
File opened (read-only)	\??\m:	hdhynwgrb.exe
File opened (read-only)	\??\q:	hdhynwgrb.exe
File opened (read-only)	\??\s:	hdhynwgrb.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	hdhynwgrb.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	\??\c:\Program Files\uwter\hdhynwgrb.dll	xgybtd.exe
File created	\??\c:\Program Files\uwter\hdhynwgrb.exe	xgybtd.exe
File opened for modification	\??\c:\Program Files\uwter	xgybtd.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	xgybtd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hdhynwgrb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-02_a7fa846394da76d0ff3cf6d85e2d8080_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
5936	cmd.exe
5576	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	hdhynwgrb.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	hdhynwgrb.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5576	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3796	hdhynwgrb.exe
3796	hdhynwgrb.exe
3796	hdhynwgrb.exe
3796	hdhynwgrb.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3796	hdhynwgrb.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5912	2026-07-02_a7fa846394da76d0ff3cf6d85e2d8080_coinminer_elex_wannacry.exe
2436	xgybtd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5912 wrote to memory of 5936	5912	2026-07-02_a7fa846394da76d0ff3cf6d85e2d8080_coinminer_elex_wannacry.exe	89
PID 5936 wrote to memory of 5576	5936	cmd.exe	91
PID 5936 wrote to memory of 2436	5936	cmd.exe	92
PID 2436 wrote to memory of 3796	2436	xgybtd.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-07-02_a7fa846394da76d0ff3cf6d85e2d8080_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-02_a7fa846394da76d0ff3cf6d85e2d8080_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5912
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\xgybtd.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-02_a7fa846394da76d0ff3cf6d85e2d8080_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5936
- - 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:5576
- - C:\Users\Admin\AppData\Local\Temp\xgybtd.exe
    C:\Users\Admin\AppData\Local\Temp\\xgybtd.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-02_a7fa846394da76d0ff3cf6d85e2d8080_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:2436
  - - \??\c:\Program Files\uwter\hdhynwgrb.exe
      "c:\Program Files\uwter\hdhynwgrb.exe" "c:\Program Files\uwter\hdhynwgrb.dll",Interface C:\Users\Admin\AppData\Local\Temp\xgybtd.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:3796

Network

MITRE ATT&CK Enterprise v16

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

hdhynwgrb.exe

Path C:\Program Files\uwter\hdhynwgrb.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

xgybtd.exe

Path C:\Users\Admin\AppData\Local\Temp\xgybtd.exe
Size 234KB
SHA256 e2feb4d97b337798411888026a0a309ea51ab7b71e01baa50fcd0e4bf4cab5a2
MD5 319c622270170b31ba7764d7aed2acc4
SHA1 5f01e17bd139a59606dd200e450c691b1eb24b7d
SHA512 876ec2103469625d8bbceabf8c56f70d2d034c91eba52860548abeafaceb276523a1198fc838b9224713c94ab0f910ec31570bc2cd903a676fcfccc9367469ff
SSDEEP 6144:yOFgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSoc:zgmYA/nsYf8QdsINkZ6CQetFP
TLSH
T1A134F18136A5CD77F0621BBD0D7B163A8136BE591B00B49BD3C4AD4FF4319E4AE2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

hdhynwgrb.dll

Path \??\c:\Program Files\uwter\hdhynwgrb.dll
Size 168KB
SHA256 c1bd20df1b32eb3c36dd1b015a939423e42bce63d0a3386b4676fec9fe4cd41a
MD5 da9773de18753e718a943c6cae923de1
SHA1 31a9c250e0c1f8ec41c3f89623656621d5a0e695
SHA512 d83e3073e60d88b172d38c82b6e44c5131a355b1821c6996ddf3c10482be0525a7cc435efb9444a64a3fb3bb974c224cd320420e4529a601d96da9c51fad14e1
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMV:SJ8T1xE3ocg9f2nfLnwYsxf2ZQ
TLSH
T103F312D3EFA649E0C0361BB07C53C10FB8620C6498725B5543D9FEEA3DA668E493D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3796-7-0x0000000010000000-0x000000001006D000-memory.dmp

Download

memory/3796-8-0x0000000010000000-0x000000001006D000-memory.dmp

Download

memory/3796-11-0x0000000010000000-0x000000001006D000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads