fatalrat | 1722be3ca7c30055c94f37b865d6f3554c934b23a59f3c1adb7c093473ee0521

Analysis

max time kernel
122s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-11-2024 05:12

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General

Target

svhost.exe
Size

140KB
MD5

200488185d59ab372448732e08da1b50
SHA1

717019dd5769e2a765401df7028fbf367d805268
SHA256

1722be3ca7c30055c94f37b865d6f3554c934b23a59f3c1adb7c093473ee0521
SHA512

6d84378730d86a0fb0c4b10c47375470595b6e6f42d9cfb6b7224f50aa2af372da2f9ae341e1a277a7c04663be4adce8c6baecc8b29a6815cf056d73a93a2637
SSDEEP

1536:Vua+BTv3tIO8MtM+/6jRVGIk1MgHjsPGYYwOda2CqqZOIgQJb0lfjtO+vbWL8xJb:Vn+htWMtf+7GZYGVA2QJgi8xJLDoU

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 3 IoCs

rat infostealer

Processes:

resource	yara_rule
behavioral2/memory/3492-0-0x0000000010000000-0x000000001001C000-memory.dmp	fatalrat
behavioral2/memory/2540-8-0x0000000010000000-0x000000001001C000-memory.dmp	fatalrat
behavioral2/memory/3492-19-0x0000000000400000-0x0000000000424000-memory.dmp	fatalrat

Executes dropped EXE 2 IoCs

Processes:

Ghijkl.exeGhijkl.exe

pid	Process
2540	Ghijkl.exe
2748	Ghijkl.exe

Drops file in Windows directory 4 IoCs

Processes:

svhost.exeGhijkl.exe

description	ioc	Process
File created	C:\Windows\Ghijkl.exe	svhost.exe
File opened for modification	C:\Windows\Ghijkl.exe	svhost.exe
File opened for modification	C:\Windows\Ghijkl.exe	Ghijkl.exe
File created	C:\Windows\Ghijkl.exe	Ghijkl.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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:

svhost.exeGhijkl.exeGhijkl.exe

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

Modifies data under HKEY_USERS 7 IoCs

Processes:

Ghijkl.exe

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services\Ghijkl Nopqrstu	Ghijkl.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services\Ghijkl Nopqrstu\Group = "new1104"	Ghijkl.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services\Ghijkl Nopqrstu\InstallTime = "2024-11-12 05:12"	Ghijkl.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Ghijkl Nopqrstu	Ghijkl.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM	Ghijkl.exe
Key created	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet	Ghijkl.exe
Key created	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services	Ghijkl.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

svhost.exeGhijkl.exeGhijkl.exe

pid	Process
3492	svhost.exe
3492	svhost.exe
2540	Ghijkl.exe
2540	Ghijkl.exe
2748	Ghijkl.exe
2748	Ghijkl.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

svhost.exe

pid	Process
3492	svhost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

svhost.exeGhijkl.exeGhijkl.exe

description	pid	Process
Token: SeDebugPrivilege	3492	svhost.exe
Token: SeDebugPrivilege	2540	Ghijkl.exe
Token: SeDebugPrivilege	2748	Ghijkl.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

Ghijkl.exe

description	pid	Process	procid_target
PID 2540 wrote to memory of 2748	2540	Ghijkl.exe	98
PID 2540 wrote to memory of 2748	2540	Ghijkl.exe	98
PID 2540 wrote to memory of 2748	2540	Ghijkl.exe	98

C:\Users\Admin\AppData\Local\Temp\svhost.exe
"C:\Users\Admin\AppData\Local\Temp\svhost.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
PID:3492

C:\Windows\Ghijkl.exe
C:\Windows\Ghijkl.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\Ghijkl.exe
  C:\Windows\Ghijkl.exe Win7
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Ghijkl.exe

Filesize
140KB

MD5
200488185d59ab372448732e08da1b50

SHA1
717019dd5769e2a765401df7028fbf367d805268

SHA256
1722be3ca7c30055c94f37b865d6f3554c934b23a59f3c1adb7c093473ee0521

SHA512
6d84378730d86a0fb0c4b10c47375470595b6e6f42d9cfb6b7224f50aa2af372da2f9ae341e1a277a7c04663be4adce8c6baecc8b29a6815cf056d73a93a2637

Download Submit
memory/2540-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3492-0-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3492-19-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download