fatalrat | ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-12-2024 06:21

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General

Target

ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe
Size

6.1MB
MD5

052072ffc4f8449345ceea343fdee0a7
SHA1

c64f1e6fa8b7ebcbda234f4534fbf654b0a4850c
SHA256

ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2
SHA512

1703513639446cc7c72142571f3016032df27346c09b2da1a5b35e51b814f27e4f13599702338e884182f578eef7f32d90d165732238c45f26523a88f9737f97
SSDEEP

98304:AAymlFX/ZL1K4WIqBI4rpNBczHA65wtX5bBeNz26AG1jQiWHugB9:AAhlFRLchIqBfz82XN8N6OjQr

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

resource	yara_rule
behavioral1/memory/1668-80-0x0000000002710000-0x000000000273A000-memory.dmp	fatalrat

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Macromedia-Packages.lnk	VNU6sR.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Macromedia-Packages.lnk	VNU6sR.exe

Executes dropped EXE 2 IoCs

pid	Process
2608	VNU6sR.exe
1668	VNU6sR.exe

Loads dropped DLL 5 IoCs

pid	Process
2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe
2888	cmd.exe
2888	cmd.exe
1668	VNU6sR.exe
1668	VNU6sR.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 6 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	write.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wordpad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	VNU6sR.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	VNU6sR.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.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	VNU6sR.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	VNU6sR.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{6C467336-8281-4E60-8204-430CED96822D} {000214E4-0000-0000-C000-000000000046} 0xFFFF = 010000000000000020dcc2f1944bdb01	cmd.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{DFFACDC5-679F-4156-8947-C5C76BC0B67F} {ADD8BA80-002B-11D0-8F0F-00C04FD7D062} 0xFFFF = 0100000000000000803dc5f1944bdb01	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\UNCAsIntranet = "0"	cmd.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	cmd.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached	cmd.exe

Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

pid	Process
2608	VNU6sR.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe
2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe
2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe
1668	VNU6sR.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1668	VNU6sR.exe
Token: SeDebugPrivilege	1668	VNU6sR.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2852	wordpad.exe
2852	wordpad.exe
2852	wordpad.exe
2852	wordpad.exe
2852	wordpad.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2220	2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe	32
PID 2504 wrote to memory of 2220	2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe	32
PID 2504 wrote to memory of 2220	2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe	32
PID 2504 wrote to memory of 2220	2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe	32
PID 2220 wrote to memory of 2852	2220	write.exe	34
PID 2220 wrote to memory of 2852	2220	write.exe	34
PID 2220 wrote to memory of 2852	2220	write.exe	34
PID 2220 wrote to memory of 2852	2220	write.exe	34
PID 2828 wrote to memory of 2608	2828	cmd.exe	35
PID 2828 wrote to memory of 2608	2828	cmd.exe	35
PID 2828 wrote to memory of 2608	2828	cmd.exe	35
PID 2828 wrote to memory of 2608	2828	cmd.exe	35
PID 2852 wrote to memory of 2628	2852	wordpad.exe	36
PID 2852 wrote to memory of 2628	2852	wordpad.exe	36
PID 2852 wrote to memory of 2628	2852	wordpad.exe	36
PID 2852 wrote to memory of 2628	2852	wordpad.exe	36
PID 2504 wrote to memory of 2888	2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe	38
PID 2504 wrote to memory of 2888	2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe	38
PID 2504 wrote to memory of 2888	2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe	38
PID 2504 wrote to memory of 2888	2504	ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe	38
PID 2888 wrote to memory of 1668	2888	cmd.exe	39
PID 2888 wrote to memory of 1668	2888	cmd.exe	39
PID 2888 wrote to memory of 1668	2888	cmd.exe	39
PID 2888 wrote to memory of 1668	2888	cmd.exe	39

C:\Users\Admin\AppData\Local\Temp\ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe
"C:\Users\Admin\AppData\Local\Temp\ca210e068987b172434c1b99cb6f5f56fba99b3bccf5ff4c4e8cd170c7b9a8a2.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\SysWOW64\write.exe
  "C:\Windows\System32\write.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2220
- - C:\Program Files (x86)\Windows NT\Accessories\wordpad.exe
    "C:\Program Files (x86)\Windows NT\Accessories\wordpad.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2852
  - - C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      4⤵
      PID:2628
- C:\Windows\SysWOW64\cmd.exe
  cmd /c start "" "C:\ProgramData\VNU6sR\VNU6sR.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2888
- - C:\ProgramData\VNU6sR\VNU6sR.exe
    "C:\ProgramData\VNU6sR\VNU6sR.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
    PID:1668

C:\Windows\system32\cmd.exe
cmd /c start C:\Users\Admin\Desktop\VNU6.lnk
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:2828
- C:\Users\Admin\AppData\Roaming\VNU6sR.exe
  "C:\Users\Admin\AppData\Roaming\VNU6sR.exe" -n C:\Users\Admin\AppData\Roaming\VNU6s.zip -d C:\Users\Admin\AppData\Roaming
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: CmdExeWriteProcessMemorySpam
  PID:2608

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

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Downloads

C:\ProgramData\VNU6sR\MSVCR71.dll

Filesize
340KB

MD5
86f1895ae8c5e8b17d99ece768a70732

SHA1
d5502a1d00787d68f548ddeebbde1eca5e2b38ca

SHA256
8094af5ee310714caebccaeee7769ffb08048503ba478b879edfef5f1a24fefe

SHA512
3b7ce2b67056b6e005472b73447d2226677a8cadae70428873f7efa5ed11a3b3dbf6b1a42c5b05b1f2b1d8e06ff50dfc6532f043af8452ed87687eefbf1791da

Download Submit
C:\ProgramData\VNU6sR\fsk.dll

Filesize
1.7MB

MD5
5518f1f23917af02b88dac408e358ab9

SHA1
c110e288db0a65155cc6f32d7b786c3d319b4986

SHA256
9efcd38d6fdd8b15f9f223d39ad2185ade41674d355f7fcbd7361c1a0271f35a

SHA512
17a8e8d69a7bd5854da31d67ca198a1c42998451facc24a017b13bb8da1981fe4c4002f12e46aa3fe651723736d43925c518d0da95b41dba750ece5c470a050e

Download Submit
C:\ProgramData\VNU6sR\longlq.cl

Filesize
1.2MB

MD5
7384b590bbac1439e788640bc849759c

SHA1
a245fde160ae5796ae0e06b63e1448689f9b7e61

SHA256
cc52cdafa4d588e382dd30148eede53ba9dd9e16b95315bdd9de626521f7a302

SHA512
8fee0d97e541bb36163e7153d53cea3752dc4c0539705aaecbc3b803471990d26160478ac2bb450cf81fa3eda8ce237672f905ebf609fcd9836b948c43fb5d5b

Download Submit
C:\Users\Admin\AppData\Roaming\VNU6s.zip

Filesize
686B

MD5
6e1c79106a3912d45d34aee0cb5e9203

SHA1
7c3257d86d943de81d344296dd66670536cfa2f5

SHA256
00df75b3ecc1ca7aa21e82533ad858ebfd04b674b56b66bbab049f6d25f40875

SHA512
afa4768e982cdee3c74ddc8c799659ea8c61bd6e044de3cf4e6e9a170b417bf85012b75f22cdfd699f22d8194db2c879efb0aed19af87f0ec5af4b39b0b8eb35

Download Submit
C:\Users\Admin\Desktop\VNU6.lnk

Filesize
869B

MD5
00bc104e1918d295bc10408c6e9e046f

SHA1
721fd756bda0c31a406368232d9102fd3cc7f2c9

SHA256
ef0ff38e8b93f1909d9ae62f759ef86f43e362cefab16bc6ee9f0065cced7c32

SHA512
7d795d789924a6a1c933b6146cb37d4101ae6f1eaf0c26aa846297f1a2962b5395ecb134bf47028f9b104891dce8b2a7ceffee4c2b5160bf9d6652f84bd8521e

Download Submit
C:\Users\Admin\Desktop\VNU6.lnk

Filesize
1KB

MD5
f74dcb84428f4f471df812d28f4382ba

SHA1
dbc56419f29f8fcbe2dfe9c0cbf59dd7a7f5ec96

SHA256
8a016f7b8921bca5d2b4337b5714948b09a5ed0fe386b679b64cf1b1848eb121

SHA512
a98fad392d70f736390d751ce55b188c952071ebb11362a7354e6ee045a70afd949bd13da190cd69dbd9f76c426ddec462e69ffa577021fdf3dba7cd6ffc007c

Download Submit
\ProgramData\VNU6sR\VNU6sR.exe

Filesize
885KB

MD5
9e6082e88e8ef4c1bc50bca07ed21ad4

SHA1
ada9368c8a9b3430933c9df50272d4bd26831f4d

SHA256
e6fd5a873ba71bfc108000d25c73e03d184955c7aa5ffa17fc33ca2d0c5fd203

SHA512
3350e3dac2f8465bf966e8fa6e54a34842196dfbcc1e785b11ccef082f750d278116a6e6164ff07e3f7247039e22395186ed9fcb1c4141ba74c5e48dc8da1915

Download Submit
\Users\Admin\AppData\Roaming\VNU6sR.exe

Filesize
220KB

MD5
91eb8e88965207b2023519b7da93ac2b

SHA1
27ab0cbfddfd2cd4eae70b8762cd9ffc9382cbb4

SHA256
56efb141fc00a52e24d736cab09b966f80dacda3ce57386c1e5b1cc661c6bf4c

SHA512
7c3c1116388ec0ee725950340a6af705844313cbc62fc778eda147d8b99c144b3d13c92321f40a6292c443c93dfbcc855d792a9b36be573859e8876a770b11e1

Download Submit
memory/1668-80-0x0000000002710000-0x000000000273A000-memory.dmp

Filesize
168KB

Download
memory/2504-0-0x0000000002470000-0x0000000002A53000-memory.dmp

Filesize
5.9MB

Download
memory/2504-79-0x0000000002470000-0x0000000002A53000-memory.dmp

Filesize
5.9MB

Download
memory/2504-76-0x0000000000400000-0x0000000000A1A000-memory.dmp

Filesize
6.1MB

Download