farfli | e68cf97ff31cd39b09346d2e829532c6e24b4db037231dcbdbc80566a5959f1e

General

Target
2026-08-07_2a73da4ffd25ad1daa09e4cd9c8a9651_coinminer_elex_wannacry.exe
Size 231KB
Sample260807-ehqdpaxbla
SHA256 e68cf97ff31cd39b09346d2e829532c6e24b4db037231dcbdbc80566a5959f1e
MD5 2a73da4ffd25ad1daa09e4cd9c8a9651
SHA1 cf7a62a4de841fbc7f17c8b48b9b36a28c591435
SHA512 986b9cebfcd49ee68c612344754d6f872930cb439aea6b51cd2c29adc8921c2930f0e22821ca9ef32a56693658a17139f487052ceb90b59cf4844c2852a0c666
SSDEEP 6144:yOFgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSok:zgmYA/nsYf8QdsINkZ6CQetFx
TLSH
T11834F18136AADD37F062177E4C7B163B8536BE650B00B49BD3C4AD5FB4319E46E2E209
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/1204-8-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral2/memory/1204-11-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/1204-8-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1204-11-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000011371-1.dat	UPX

Deletes itself 1 IoCs

pid	Process
1824	bdryij.exe

Executes dropped EXE 2 IoCs

pid	Process
1824	bdryij.exe
1204	ote.exe

Loads dropped DLL 1 IoCs

pid	Process
1204	ote.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-1-5-21-1875162379-3804078649-638427191-1000\Software\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\aegog\\ote.exe \"c:\\Program Files\\aegog\\otefj.dll\",Interface"	ote.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)	\??\z:	ote.exe
File opened (read-only)	\??\b:	ote.exe
File opened (read-only)	\??\o:	ote.exe
File opened (read-only)	\??\r:	ote.exe
File opened (read-only)	\??\i:	ote.exe
File opened (read-only)	\??\k:	ote.exe
File opened (read-only)	\??\s:	ote.exe
File opened (read-only)	\??\v:	ote.exe
File opened (read-only)	\??\w:	ote.exe
File opened (read-only)	\??\a:	ote.exe
File opened (read-only)	\??\d:	ote.exe
File opened (read-only)	\??\g:	ote.exe
File opened (read-only)	\??\h:	ote.exe
File opened (read-only)	\??\m:	ote.exe
File opened (read-only)	\??\p:	ote.exe
File opened (read-only)	\??\q:	ote.exe
File opened (read-only)	\??\t:	ote.exe
File opened (read-only)	\??\j:	ote.exe
File opened (read-only)	\??\l:	ote.exe
File opened (read-only)	\??\n:	ote.exe
File opened (read-only)	\??\u:	ote.exe
File opened (read-only)	\??\x:	ote.exe
File opened (read-only)	\??\y:	ote.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	ote.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\aegog	bdryij.exe
File created	\??\c:\Program Files\aegog\otefj.dll	bdryij.exe
File created	\??\c:\Program Files\aegog\ote.exe	bdryij.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
3436	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	ote.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-07_2a73da4ffd25ad1daa09e4cd9c8a9651_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bdryij.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
3436	cmd.exe
5364	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	ote.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ote.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5364	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1204	ote.exe
1204	ote.exe
1204	ote.exe
1204	ote.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1204	ote.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4852	2026-08-07_2a73da4ffd25ad1daa09e4cd9c8a9651_coinminer_elex_wannacry.exe
1824	bdryij.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4852 wrote to memory of 3436	4852	2026-08-07_2a73da4ffd25ad1daa09e4cd9c8a9651_coinminer_elex_wannacry.exe	89
PID 3436 wrote to memory of 5364	3436	cmd.exe	91
PID 3436 wrote to memory of 1824	3436	cmd.exe	92
PID 1824 wrote to memory of 1204	1824	bdryij.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-07_2a73da4ffd25ad1daa09e4cd9c8a9651_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-07_2a73da4ffd25ad1daa09e4cd9c8a9651_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4852
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\bdryij.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_2a73da4ffd25ad1daa09e4cd9c8a9651_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:3436
- - 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:5364
- - C:\Users\Admin\AppData\Local\Temp\bdryij.exe
    C:\Users\Admin\AppData\Local\Temp\\bdryij.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_2a73da4ffd25ad1daa09e4cd9c8a9651_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:1824
  - - \??\c:\Program Files\aegog\ote.exe
      "c:\Program Files\aegog\ote.exe" "c:\Program Files\aegog\otefj.dll",Interface C:\Users\Admin\AppData\Local\Temp\bdryij.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:1204

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

Replay Monitor

Loading Replay Monitor...

Downloads

ote.exe

Path C:\Program Files\aegog\ote.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

bdryij.exe

Path C:\Users\Admin\AppData\Local\Temp\bdryij.exe
Size 231KB
SHA256 d4e0a5ce0c97adc1fb061bb6f209908eaf8b1c2a734fd26b5f18336f48fe6f1e
MD5 9f5c249d6ac58e2e6cc2ae3baaf61641
SHA1 9241e73419b263e56ed38d8f3673fb740417d62f
SHA512 bcd816721670fe1827e051a38bbc30a30861e6a6d74fb24381cb74e8cf69c073583d8ed7f53b3da6c255533370ea80be13cc4d9740ce027d8d56ab58ecd0a52f
SSDEEP 6144:yOFgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo:zgmYA/nsYf8QdsINkZ6CQetF
TLSH
T17134F18136AADD37F062177E4C7B163B8536BE650B00B48BD3C4AD5FB4319E46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

otefj.dll

Path \??\c:\Program Files\aegog\otefj.dll
Size 168KB
SHA256 359e0bc4562ffb2036e83b5feb3c9e7e8247d2094e206a56f1b6feb1d4ed5772
MD5 0998d4c38a894940854480fdda51f23d
SHA1 10294e508022ce008bcf043fd2ee0c04922dcba7
SHA512 c41a26a4387d937ea0027c547ef9e6e50fb4c601273cb5457137e9538c99b216fa615d28dd897b1febfdd14d98fbabdbeb3c28f6d3b5d5dfdd5f41155717ea8b
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMG:SJ8T1xE3ocg9f2nfLnwYsxf2Zz
TLSH
T1C0F312D3EFA649E0C0361BB07C53C10FB8620CA498715B5553D9FEEA3DA668E493D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1204-7-0x0000000010000000-0x000000001006D000-memory.dmp

Download

memory/1204-8-0x0000000010000000-0x000000001006D000-memory.dmp

Download

memory/1204-11-0x0000000010000000-0x000000001006D000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads