fatalrat | 254c47277797a8913ee9e13a2272bea90551e625e5813541c2838ab6f1536eed

Analysis

max time kernel
148s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
12-01-2024 02:42

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General

Target

wyanoc/Agghosts.exe
Size

23KB
MD5

5aab297fa8f143bfa67310ad78b76d3f
SHA1

5db963c2cca1bc8c8c060c52f7df76ccb477f01a
SHA256

8ec64bc55e5641d7683288e5e8e27c9391f06eb4da096c3d677d8f25ca4d04df
SHA512

c1ee67bd4c6bcfdc4179f905c7abc4ac632c9265b61dd5fdb90eeeec39802abe2cc487a5c8ded8a0748728104170c1b4d3a88904f102e1c3f891fac7702a2256
SSDEEP

384:08bdzeOuMnujhAz3W1xEuw41M0Jn5DGlIPxh8E9VF0NyEoMe:0wdzeBo4lndw2M8n5DGiPxWE2g

Score

10^/10

fatalrat infostealer persistence 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 2 IoCs

rat infostealer

resource	yara_rule
behavioral16/memory/1896-0-0x0000000001470000-0x0000000001495000-memory.dmp	fatalrat
behavioral16/memory/1896-1-0x0000000010000000-0x000000001001D000-memory.dmp	fatalrat

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Æô¶¯Ïî¹ÜÀí = "C:\\Users\\Admin\\AppData\\Local\\Agghosts.exe"	Agghosts.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Æô¶¯Ïî¹ÜÀí = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wyanoc\\Agghosts.exe"	Agghosts.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	Agghosts.exe

Executes dropped EXE 1 IoCs

pid	Process
4480	Agghosts.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process
1516	4480	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1896	Agghosts.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 4480	1896	Agghosts.exe	22
PID 1896 wrote to memory of 4480	1896	Agghosts.exe	22
PID 1896 wrote to memory of 4480	1896	Agghosts.exe	22

C:\Users\Admin\AppData\Local\Temp\wyanoc\Agghosts.exe
"C:\Users\Admin\AppData\Local\Temp\wyanoc\Agghosts.exe"
1⤵
- Adds Run key to start application
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Users\Admin\AppData\Local\Agghosts.exe
  "C:\Users\Admin\AppData\Local\Agghosts.exe"
  2⤵
  - Adds Run key to start application
  - Executes dropped EXE
  PID:4480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4480 -ip 4480
1⤵
PID:1816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4480 -s 228
1⤵
- Program crash
PID:1516

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Agghosts.exe

Filesize
23KB

MD5
5aab297fa8f143bfa67310ad78b76d3f

SHA1
5db963c2cca1bc8c8c060c52f7df76ccb477f01a

SHA256
8ec64bc55e5641d7683288e5e8e27c9391f06eb4da096c3d677d8f25ca4d04df

SHA512
c1ee67bd4c6bcfdc4179f905c7abc4ac632c9265b61dd5fdb90eeeec39802abe2cc487a5c8ded8a0748728104170c1b4d3a88904f102e1c3f891fac7702a2256

Download Submit
memory/1896-0-0x0000000001470000-0x0000000001495000-memory.dmp

Filesize
148KB

Download
memory/1896-1-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads