farfli | b6a302e7e057b6257aa9e3d873862978d0e5ea507e344fc7b4bceb301c7063de

Analysis

max time kernel
149s
max time network
94s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
08/05/2026, 17:49

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General

Target
2026-05-08_0231280ce2aeacb01996911ffd01ff78_elex_wannacry.exe
Size 364KB
Sample260508-weeapaez8m
SHA256 b6a302e7e057b6257aa9e3d873862978d0e5ea507e344fc7b4bceb301c7063de
MD5 0231280ce2aeacb01996911ffd01ff78
SHA1 eefe2c4297e9a3585ce745863ed695d51d77bc36
SHA512 39892317c0f1be32d2e28e26e522ea2c9967ea5f9454d57ab0d39caf0b440747c7a42787cc5d9da850732d8aabea8fbdeda91bf5338fb8df3ab3c0343192a78c
SSDEEP 6144:KpFbYiKsO/Vo8wjOm6JMRPzyZCJeNnTImk9dKacFK8Czj8YT4kFkLX:qci/O2PE2QC00me2VCzYYT4r
TLSH
T1E584DF1272D048F6E4853633CE76BE74E3E9D4AC5E32DB775F98060D1E36A0893122AD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

107.163.56.251:6658
http://107.163.56.240:18963/main.php
http://107.163.56.241:18530/

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/2268-18-0x0000000010000000-0x000000001004F000-memory.dmp	family_farfli
behavioral2/memory/2268-22-0x0000000010000000-0x000000001004F000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/2268-18-0x0000000010000000-0x000000001004F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2268-22-0x0000000010000000-0x000000001004F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Deletes itself 1 IoCs

pid	Process
4948	oadjdqwwb.exe

Executes dropped EXE 2 IoCs

pid	Process
4948	oadjdqwwb.exe
2268	axx.exe

Loads dropped DLL 1 IoCs

pid	Process
2268	axx.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-1-5-21-1456842261-3464001825-2855069093-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\dscvf\\axx.exe \"c:\\Program Files\\dscvf\\axxwe.dll\",Compliance"	axx.exe

Enumerates connected drives 3 TTPs 2 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)	\??\a:	axx.exe
File opened (read-only)	\??\b:	axx.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	axx.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\dscvf	oadjdqwwb.exe
File created	\??\c:\Program Files\dscvf\axxwe.dll	oadjdqwwb.exe
File created	\??\c:\Program Files\dscvf\axx.exe	oadjdqwwb.exe
File opened for modification	\??\c:\Program Files\dscvf\axx.exe	oadjdqwwb.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3796	2268	WerFault.exe	83

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	oadjdqwwb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	axx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-05-08_0231280ce2aeacb01996911ffd01ff78_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
1768	cmd.exe
1796	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1796	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2268	axx.exe
2268	axx.exe
2268	axx.exe
2268	axx.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	axx.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2608	2026-05-08_0231280ce2aeacb01996911ffd01ff78_elex_wannacry.exe
4948	oadjdqwwb.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2608 wrote to memory of 1768	2608	2026-05-08_0231280ce2aeacb01996911ffd01ff78_elex_wannacry.exe	79
PID 1768 wrote to memory of 1796	1768	cmd.exe	81
PID 1768 wrote to memory of 4948	1768	cmd.exe	82
PID 4948 wrote to memory of 2268	4948	oadjdqwwb.exe	83

C:\Users\Admin\AppData\Local\Temp\2026-05-08_0231280ce2aeacb01996911ffd01ff78_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-08_0231280ce2aeacb01996911ffd01ff78_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2608
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\oadjdqwwb.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-08_0231280ce2aeacb01996911ffd01ff78_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1768
- - 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:1796
- - C:\Users\Admin\AppData\Local\Temp\oadjdqwwb.exe
    C:\Users\Admin\AppData\Local\Temp\\oadjdqwwb.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-08_0231280ce2aeacb01996911ffd01ff78_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:4948
  - - \??\c:\Program Files\dscvf\axx.exe
      "c:\Program Files\dscvf\axx.exe" "c:\Program Files\dscvf\axxwe.dll",Compliance C:\Users\Admin\AppData\Local\Temp\oadjdqwwb.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
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2268
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1720
        5⤵
        Program crash
        
        PID:3796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2268 -ip 2268
1⤵
PID:4656

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

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Downloads

axx.exe

Path C:\Program Files\dscvf\axx.exe
Size 40KB
SHA256 8dcaeeebef9b9f3d41d295db145ffb3850f309d089c08125c7fa7034db5fd80e
MD5 22bb5bd901d8b25ac5b41edbb7d5053e
SHA1 8a935dd8d7e104fc553ff7e8b54a404f7b079334
SHA512 cc3fb68fd6791a08e4a7d1a8db8d07cfcc8c9b9dceec10b53f0cb7ee86473303a19be4f23e379f84c59e02d0568e7c066e21cd1300f6032dac4ba52f609f62e7
SSDEEP 768:C67uhQpPPp0nnqFk509FRdVcQX6N58hJYim1jLP3RRe:C67uhQpXp0nnqa5093jKNAmB3RR
TLSH
T10C134C02BE88C071DDA114B41A5DB337939DED604B1586D3593887EBAA2D3E39E343DE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

oadjdqwwb.exe

Path C:\Users\Admin\AppData\Local\Temp\oadjdqwwb.exe
Size 365KB
SHA256 1c4886f7c66bad49877f3412b48ef8263dcb882ced46a36a0128c050ee7a15dc
MD5 cb88781a1e5db3cc696ca09dfca18644
SHA1 afe52d8bfb46d8a02c095458a10633b58b0d0f94
SHA512 4de08007271af9e26d58b20f10a0df8ee3e0b76bdd7017a7f3a972267fdcafb14725bd73d4038fe046908d145b2681575fa02d76d3d01ce9adab2abef6fc7af8
SSDEEP 6144:KpFbYiKsO/Vo8wjOm6JMRPzyZCJeNnTImk9dKacFK8Czj8YT4kFkL:qci/O2PE2QC00me2VCzYYT4
TLSH
T1C984DF1272D048F6E4853633CE76BE74E3E9D4AC5E32DB775F98060D1E36A0893122AD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

axxwe.dll

Path \??\c:\Program Files\dscvf\axxwe.dll
Size 179KB
SHA256 c946393ea52e79f165f73f79a161054d4c599f697c1858c03197e999edf4d557
MD5 5a2db52f2ac05e53a497e403c907fd1c
SHA1 855dc9c3191d9937aa067821a74e4ed8b69b73bd
SHA512 9bc8d9761827e49e315c7e57575b26430ae4db2bd6492917023435b1efae9891fd3753dadf9ca8d9460b469b489a315b843a4883ec3706b9cba57ea9c6871ffc
SSDEEP 3072:EC5Wpfs98nVCWdKycHtld8VBt7NUalwXH9RqYzJabTYd3KIdj6+uFdi98pvO0hfp:ECOfQ8nVcycHrd8VBtBUa4HfRzJabT8w
TLSH
T1EA0423EBBF82C652C84F67767AAF244437A905D91BC1E0A56F0482CE39C3135E67DE48
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2268-17-0x0000000000940000-0x0000000000941000-memory.dmp

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memory/2268-16-0x0000000010000000-0x000000001004F000-memory.dmp

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memory/2268-18-0x0000000010000000-0x000000001004F000-memory.dmp

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memory/2268-19-0x0000000000A80000-0x0000000000B1C000-memory.dmp

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memory/2268-22-0x0000000010000000-0x000000001004F000-memory.dmp

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memory/2608-2-0x0000000000B20000-0x0000000000BBC000-memory.dmp

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memory/2608-3-0x0000000000400000-0x0000000000458000-memory.dmp

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memory/2608-0-0x0000000000400000-0x0000000000458000-memory.dmp

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memory/4948-12-0x0000000000400000-0x0000000000458000-memory.dmp

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memory/4948-11-0x0000000000880000-0x000000000091C000-memory.dmp

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