fatalrat | 1d0cea2310ac256c3c509befbb25972c1d1574994d08092ccd440bad0fc53cbb

General

Target

tmp.exe
Size

140KB
MD5

fd1bc01f2a921ebf9704019605b27ab2
SHA1

39de5f483e5658034ae86e19b80d11ca477dae94
SHA256

1d0cea2310ac256c3c509befbb25972c1d1574994d08092ccd440bad0fc53cbb
SHA512

ed931513cfeafd2ead0e535101b7f216019c127ed50f63fd882180b2ddec842a8f368c5de3c6e123a1ae5afb62b7548407a89a0bf412351c13e8f01f15a50980
SSDEEP

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

Score

10^/10

fatalrat infostealer rat

Malware Config

Signatures

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

Fatal Rat payload 1 IoCs

rat infostealer

resource	yara_rule
behavioral1/memory/1596-55-0x0000000010000000-0x000000001001C000-memory.dmp	fatalrat

Executes dropped EXE 2 IoCs

pid	Process
848	Pqrstu.exe
1900	Pqrstu.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\Pqrstu.exe	tmp.exe
File opened for modification	C:\Windows\Pqrstu.exe	tmp.exe
File opened for modification	C:\Windows\Pqrstu.exe	Pqrstu.exe
File created	C:\Windows\Pqrstu.exe	Pqrstu.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	Pqrstu.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	Pqrstu.exe

Modifies data under HKEY_USERS 11 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software	Pqrstu.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	Pqrstu.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	Pqrstu.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Pqrstu Wxyabcde	Pqrstu.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM	Pqrstu.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet	Pqrstu.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services	Pqrstu.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Pqrstu Wxyabcde\InstallTime = "2022-12-02 16:45"	Pqrstu.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Pqrstu Wxyabcde\Group = "Fatal"	Pqrstu.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	Pqrstu.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	Pqrstu.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe
1900	Pqrstu.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1596	tmp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1596	tmp.exe
Token: SeDebugPrivilege	848	Pqrstu.exe
Token: SeDebugPrivilege	1900	Pqrstu.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 1900	848	Pqrstu.exe	28
PID 848 wrote to memory of 1900	848	Pqrstu.exe	28
PID 848 wrote to memory of 1900	848	Pqrstu.exe	28
PID 848 wrote to memory of 1900	848	Pqrstu.exe	28

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
PID:1596

C:\Windows\Pqrstu.exe
C:\Windows\Pqrstu.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:848
- C:\Windows\Pqrstu.exe
  C:\Windows\Pqrstu.exe Win7
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1900

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Pqrstu.exe

Filesize
140KB

MD5
fd1bc01f2a921ebf9704019605b27ab2

SHA1
39de5f483e5658034ae86e19b80d11ca477dae94

SHA256
1d0cea2310ac256c3c509befbb25972c1d1574994d08092ccd440bad0fc53cbb

SHA512
ed931513cfeafd2ead0e535101b7f216019c127ed50f63fd882180b2ddec842a8f368c5de3c6e123a1ae5afb62b7548407a89a0bf412351c13e8f01f15a50980

Download Submit
C:\Windows\Pqrstu.exe

Filesize
140KB

MD5
fd1bc01f2a921ebf9704019605b27ab2

SHA1
39de5f483e5658034ae86e19b80d11ca477dae94

SHA256
1d0cea2310ac256c3c509befbb25972c1d1574994d08092ccd440bad0fc53cbb

SHA512
ed931513cfeafd2ead0e535101b7f216019c127ed50f63fd882180b2ddec842a8f368c5de3c6e123a1ae5afb62b7548407a89a0bf412351c13e8f01f15a50980

Download Submit
C:\Windows\Pqrstu.exe

Filesize
140KB

MD5
fd1bc01f2a921ebf9704019605b27ab2

SHA1
39de5f483e5658034ae86e19b80d11ca477dae94

SHA256
1d0cea2310ac256c3c509befbb25972c1d1574994d08092ccd440bad0fc53cbb

SHA512
ed931513cfeafd2ead0e535101b7f216019c127ed50f63fd882180b2ddec842a8f368c5de3c6e123a1ae5afb62b7548407a89a0bf412351c13e8f01f15a50980

Download Submit
memory/1596-54-0x0000000074C91000-0x0000000074C93000-memory.dmp

Filesize
8KB

Download
memory/1596-55-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download

Analysis

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