farfli | be0857171daf6deff36ada3f753a31d6d57b40c9af28759bf3f94006c24abfd9

General

Target
be0857171daf6deff36ada3f753a31d6d57b40c9af28759bf3f94006c24abfd9.exe
Size 114KB
Sample260825-amv3hsdn3x
SHA256 be0857171daf6deff36ada3f753a31d6d57b40c9af28759bf3f94006c24abfd9
MD5 2a8c3e1d07a1ffa00fab3ec47661e1c3
SHA1 66101621a7f57ef0562345a33bd33b5c63e161ca
SHA512 36c7dcb02dcfd08f5a68d8637c3b5e7f5dadcc1b8e525187ddec5c28367e4dc4e6d3214ba298cbcd5d9dce9f18d4122c480c8d3825a8258c33bcd1413542dbf8
SSDEEP 1536:vRiAXaKD5gxzmwYEM/D3ozc4I8JboecWtX4:piAXaKDeKNnD36cb8tI
TLSH
T185B3AE42ABF0C6A5E0625CB5067757219EB2FC2B2924832777D6B70EEC30F04EE25365
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli persistence spyware stealer

Malware Config

Signatures

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

Detects Farfli Backdoor 1 IoCs

resource	yara_rule
behavioral2/memory/4228-10-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
7	4228	rundll32.exe
8	4228	rundll32.exe
9	4228	rundll32.exe
11	4228	rundll32.exe
12	4228	rundll32.exe
14	4228	rundll32.exe
15	4228	rundll32.exe
17	4228	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2244	dxdbjaqlp.exe

Executes dropped EXE 1 IoCs

pid	Process
2244	dxdbjaqlp.exe

Loads dropped DLL 1 IoCs

pid	Process
4228	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-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\lrsxy\\kqihp.dll\",GetWindowClass"	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)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\v:	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

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
2236	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dxdbjaqlp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	be0857171daf6deff36ada3f753a31d6d57b40c9af28759bf3f94006c24abfd9.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
3308	PING.EXE
2236	cmd.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
3308	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4228	rundll32.exe
4228	rundll32.exe
4228	rundll32.exe
4228	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4228	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2944	be0857171daf6deff36ada3f753a31d6d57b40c9af28759bf3f94006c24abfd9.exe
2244	dxdbjaqlp.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2944 wrote to memory of 2236	2944	be0857171daf6deff36ada3f753a31d6d57b40c9af28759bf3f94006c24abfd9.exe	88
PID 2236 wrote to memory of 3308	2236	cmd.exe	90
PID 2236 wrote to memory of 2244	2236	cmd.exe	91
PID 2244 wrote to memory of 4228	2244	dxdbjaqlp.exe	92

C:\Users\Admin\AppData\Local\Temp\be0857171daf6deff36ada3f753a31d6d57b40c9af28759bf3f94006c24abfd9.exe
"C:\Users\Admin\AppData\Local\Temp\be0857171daf6deff36ada3f753a31d6d57b40c9af28759bf3f94006c24abfd9.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\dxdbjaqlp.exe "C:\Users\Admin\AppData\Local\Temp\be0857171daf6deff36ada3f753a31d6d57b40c9af28759bf3f94006c24abfd9.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:2236
- - 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:3308
- - \??\c:\dxdbjaqlp.exe
    c:\dxdbjaqlp.exe "C:\Users\Admin\AppData\Local\Temp\be0857171daf6deff36ada3f753a31d6d57b40c9af28759bf3f94006c24abfd9.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2244
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\lrsxy\kqihp.dll",GetWindowClass c:\dxdbjaqlp.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:4228

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

dxdbjaqlp.exe

Path \??\c:\dxdbjaqlp.exe
Size 114KB
SHA256 2549c37aac03332f30134815d64b3aee0c3417564d06614710882a583ac5064f
MD5 1b1c6aa20f89ea3997f15c78493e7303
SHA1 47b3e64aee1fca6f783b89d2c9345f0b96f8896b
SHA512 d44f4145c7c039eddc92ae2474128c159937e016b17395d04f33d67b5f255d33df5b031f784cbfa1f029adf2348e8847bfec2e104e4cfb20c8e0882e447d3e90
SSDEEP 1536:vRiAXaKD5gxzmwYEM/D3ozc4I8JboecWtX4j:piAXaKDeKNnD36cb8tIj
TLSH
T17EB3AE429BF0C6A5E0625CB5067757219AB2FC2B2924832777D6B70FEC30F04EE253A5
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

kqihp.dll

Path \??\c:\lrsxy\kqihp.dll
Size 46KB
SHA256 f57f9e54f4774c2b944fb070ae0c2a02cbb4b7686ab3207544c3ccaff0ff3dd9
MD5 a3fd41430ddcaa55fde840788925406a
SHA1 dbdd87f5c1bbf6a6f44c2e2c4744675d5e4e75c2
SHA512 23109572cfc9a282ea3ec84d93bfe02303d27f365ad2d9f47f6234f91da14c64f80133cc5e49746dfcb65d2454b7e7c13eff59ba4bbc18e09d2fb1c630ba59c9
SSDEEP 768:2sUfnvxs6iLlhpfFPtnQf7kifD/v7yb9Bh7Cb0VQJojZC/xjTk:2sJT1qf4W/vub9nnV1jZC/xE
TLSH
T19D2302C8A6F08EF3D2F90B7980E046DCDCFDB939877381150566008E7C71057FA446AA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2244-6-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/2944-0-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/2944-2-0x0000000000400000-0x000000000041A000-memory.dmp

Download

memory/4228-9-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/4228-10-0x0000000010000000-0x000000001002E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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