fatalrat | 24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3

Resubmissions

02-12-2024 06:58

241202-hrp13azmep 10

02-12-2024 04:09

241202-eqvclstrbk 10

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2024 04:09

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
Size

4.5MB
MD5

0b002ffd1ba0c617cfd6f25f75d8432e
SHA1

9a102e169744d9a28e575efecadc53b9d77fb751
SHA256

24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3
SHA512

52236ec4b8d3df89a7c60937c8d886ca05285cd77e639b731075368ef6bf80f973ae978d24123127d3785c8254f718c0556dc6b55be9355c4ac77bfb88f7172b
SSDEEP

49152:9YJMpJc32PMgJjQhGp7fOU3h1hyiTrMIx7Rtpb68N54+97boAXuE+OPnmr7DvjZd:9Og51Mgr/txTbV7+6W

Score

10^/10

fatalrat discovery infostealer rat

Malware Config

Signatures

FatalRat
FatalRat is a modular infostealer family written in C++ first appearing in June 2021.
infostealer rat fatalrat
Fatalrat family
fatalrat

Fatal Rat payload 1 IoCs

rat infostealer

Processes:

resource	yara_rule
behavioral2/memory/1056-39-0x0000000002E40000-0x0000000002E6A000-memory.dmp	fatalrat

Drops startup file 2 IoCs

Processes:

OuNKjE.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Macromedia-Packages.lnk	OuNKjE.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Macromedia-Packages.lnk	OuNKjE.exe

Executes dropped EXE 2 IoCs

Processes:

OuNKjE.exeOuNKjE.exe

pid	Process
1852	OuNKjE.exe
1056	OuNKjE.exe

Loads dropped DLL 1 IoCs

Processes:

OuNKjE.exe

pid	Process
1056	OuNKjE.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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

Processes:

OuNKjE.exeOuNKjE.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	OuNKjE.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	OuNKjE.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

Processes:

OuNKjE.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	OuNKjE.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	OuNKjE.exe

Modifies data under HKEY_USERS 10 IoCs

Processes:

cmd.exe

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached	cmd.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer	cmd.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\SlowContextMenuEntries = 6024b221ea3a6910a2dc08002b30309d6e0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	cmd.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\SlowContextMenuEntries = 6024b221ea3a6910a2dc08002b30309d6e0000000114020000000000c0000000000000466e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	cmd.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	cmd.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	cmd.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	cmd.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{00021401-0000-0000-C000-000000000046} {000214E4-0000-0000-C000-000000000046} 0xFFFF = 0100000000000000bf0c4ef76f44db01	cmd.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	cmd.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	cmd.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exeOuNKjE.exe

pid	Process
4552	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
4552	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
4552	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
4552	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
4552	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
4552	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe
1056	OuNKjE.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

OuNKjE.exe

description	pid	Process
Token: SeDebugPrivilege	1056	OuNKjE.exe
Token: SeDebugPrivilege	1056	OuNKjE.exe

Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

wordpad.exeOuNKjE.exe

pid	Process
1680	wordpad.exe
1680	wordpad.exe
1680	wordpad.exe
1680	wordpad.exe
1680	wordpad.exe
1056	OuNKjE.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exewrite.execmd.execmd.exe

description	pid	Process	procid_target
PID 4552 wrote to memory of 3660	4552	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe	87
PID 4552 wrote to memory of 3660	4552	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe	87
PID 3660 wrote to memory of 1680	3660	write.exe	89
PID 3660 wrote to memory of 1680	3660	write.exe	89
PID 1300 wrote to memory of 1852	1300	cmd.exe	92
PID 1300 wrote to memory of 1852	1300	cmd.exe	92
PID 1300 wrote to memory of 1852	1300	cmd.exe	92
PID 4552 wrote to memory of 3060	4552	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe	98
PID 4552 wrote to memory of 3060	4552	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe	98
PID 3060 wrote to memory of 1056	3060	cmd.exe	99
PID 3060 wrote to memory of 1056	3060	cmd.exe	99
PID 3060 wrote to memory of 1056	3060	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
"C:\Users\Admin\AppData\Local\Temp\24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4552
- C:\Windows\System32\write.exe
  "C:\Windows\System32\write.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3660
- - C:\Program Files\Windows NT\Accessories\wordpad.exe
    "C:\Program Files\Windows NT\Accessories\wordpad.exe"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1680
- C:\Windows\System32\cmd.exe
  cmd /c start "" "C:\ProgramData\OuNKjE\OuNKjE.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3060
- - C:\ProgramData\OuNKjE\OuNKjE.exe
    "C:\ProgramData\OuNKjE\OuNKjE.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1056

C:\Windows\system32\cmd.exe
cmd /c start C:\Users\Admin\Desktop\OuNK.lnk
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:1300
- C:\Users\Admin\AppData\Roaming\OuNKjE.exe
  "C:\Users\Admin\AppData\Roaming\OuNKjE.exe" -n C:\Users\Admin\AppData\Roaming\OuNKj.zip -d C:\Users\Admin\AppData\Roaming
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1852

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:2272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\OuNKjE\OuNKjE.exe

Filesize
508KB

MD5
a79a2e0b7f299ab2f80ee8315679baee

SHA1
43d76adbcc19e4c8b60ffba419797a22b756e927

SHA256
0a804e7efe38d6eba358781597205519b936239e9daebcdf2f71c62c6a416f5c

SHA512
f246044eb82e2d4562081b0041ba2109cbda385b335b3bf10d3408acda6ae0c605ab1a522a7f5f363dfd6417e6825ff7d2831d42b8e4440d012fdf33ec605649

Download Submit
C:\ProgramData\OuNKjE\VEDecoder.dll

Filesize
1.6MB

MD5
d6a3fed112ab4e6bfe32cbe220dc225d

SHA1
bb9190ee490c46959e2bc192009f7773222dfa12

SHA256
8d89d4282f514acf2d7ef3ff7a618bbd513a84538ad309f2a48bff77c202bd58

SHA512
043b866e32db62bf8deb4ad9aa896b8274813cf1e6e4e575a3afc595893b5e5265a0430f6a1010c80db955114a0f9d9c3f4e0b3ee47b3323fb2bbcda5b6b7f61

Download Submit
C:\ProgramData\OuNKjE\longlq.cl

Filesize
1.2MB

MD5
6652b3a6e7290de3f12a5f94b9b72b8c

SHA1
4702a4305f14c8437787343de339fa4f0a4b4d75

SHA256
946d9c70c3ae9d8b22530a844547494c60668a6a3b0cf4e25f84f03a0781743e

SHA512
38950c74297de0820ba606680ad74252dc0f8a4c9d46bdb73b903da55ab7b243a4ae7fa6812f026d2b4ec47b8000454e944be587cb788d592ab30d3848b77d34

Download Submit
C:\Users\Admin\AppData\Roaming\OuNKj.zip

Filesize
655B

MD5
34ee9ebcefc5604fba3f892b7a061c75

SHA1
f86cedb3f00b9caea7678eb13086647d9a278adb

SHA256
717ef68df0c74408fa348d1f416aa170d6409210a88d042edf5029606c0b04fa

SHA512
19fbb8ec7fb45228b1d6e239183443feee7d36362c48f88218c7e2126321344d04550715d0388e70fa5b4e0f1ed12a7112013abb75116bdeec4df2474c7d4d41

Download Submit
C:\Users\Admin\AppData\Roaming\OuNKjE.exe

Filesize
105KB

MD5
6b8ebc942fe392c669b0b21bc8f83a03

SHA1
18fb9645a7365ae17b8386e47bec0b5ba6f5122f

SHA256
e5a35deff01c93f658ab8c4192570ad9ae5ffaa4f5f6d1b4db99f176bf5bdbe7

SHA512
0953d528c5d07b22fa0a969c98d569cf68e58450e1fc0179ddb2068cb4c429d23044a71005fd0daebe7e0c896c5a7598c5329e4c040be9099dfb1e62a2686589

Download Submit
C:\Users\Admin\Desktop\OuNK.lnk

Filesize
948B

MD5
5e2ad5aea8429c5abf9b1e78b311b693

SHA1
9ad4de23eae7a9c8629027523481b510b8f7f985

SHA256
893271baff52758c60a1457d2a047eb6368e70541aab48bc95305d5840a55a01

SHA512
fa6049b56bdaa263183eb61f1ddf6b9cc9069cc52e1cd09fbd888286be9d5054b48b3abfd805007299e3f9dfd178debaf4ccee93b5bd0f03bef7f3852b51bdcb

Download Submit
C:\Users\Admin\Desktop\OuNK.lnk

Filesize
1KB

MD5
fef7f95af8a5dc98eb9d1a98e4a98ed6

SHA1
8a98ab3a17e85cfc54c4726000120656d1118bb7

SHA256
ae28d26c09cc26390c01d29f0a9b61a359daaa9145478108154ab0d51c032f57

SHA512
06c66c967269b04279e2f38100fc16e0298a05a732feb66f94d3290de822bedc31ad6b902e4b0719283496f99a0c185a7cf67ffc2cc67f5d668c78e9e9b1a26c

Download Submit
memory/1056-39-0x0000000002E40000-0x0000000002E6A000-memory.dmp

Filesize
168KB

Download
memory/1852-23-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/4552-0-0x0000000002410000-0x00000000027F6000-memory.dmp

Filesize
3.9MB

Download
memory/4552-35-0x0000000000400000-0x0000000000890000-memory.dmp

Filesize
4.6MB

Download
memory/4552-36-0x0000000002410000-0x00000000027F6000-memory.dmp

Filesize
3.9MB

Download