fatalrat | 254c47277797a8913ee9e13a2272bea90551e625e5813541c2838ab6f1536eed

Analysis

max time kernel
118s
max time network
128s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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
behavioral15/memory/1620-0-0x0000000000080000-0x00000000000A5000-memory.dmp	fatalrat
behavioral15/memory/1620-1-0x0000000010000000-0x000000001001D000-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-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Windows\CurrentVersion\Run\Æô¶¯Ïî¹ÜÀí = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wyanoc\\Agghosts.exe"	Agghosts.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Windows\CurrentVersion\Run\Æô¶¯Ïî¹ÜÀí = "C:\\Users\\Admin\\AppData\\Local\\Agghosts.exe"	Agghosts.exe

Executes dropped EXE 1 IoCs

pid	Process
2668	Agghosts.exe

Loads dropped DLL 6 IoCs

pid	Process
1620	Agghosts.exe
2716	WerFault.exe
2716	WerFault.exe
2716	WerFault.exe
2716	WerFault.exe
2716	WerFault.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	procid_target
2716	2668	WerFault.exe	28

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1620	Agghosts.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 2668	1620	Agghosts.exe	28
PID 1620 wrote to memory of 2668	1620	Agghosts.exe	28
PID 1620 wrote to memory of 2668	1620	Agghosts.exe	28
PID 1620 wrote to memory of 2668	1620	Agghosts.exe	28
PID 2668 wrote to memory of 2716	2668	Agghosts.exe	29
PID 2668 wrote to memory of 2716	2668	Agghosts.exe	29
PID 2668 wrote to memory of 2716	2668	Agghosts.exe	29
PID 2668 wrote to memory of 2716	2668	Agghosts.exe	29

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
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Users\Admin\AppData\Local\Agghosts.exe
  "C:\Users\Admin\AppData\Local\Agghosts.exe"
  2⤵
  - Adds Run key to start application
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2668 -s 72
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2716

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
23KB

MD5
5aab297fa8f143bfa67310ad78b76d3f

SHA1
5db963c2cca1bc8c8c060c52f7df76ccb477f01a

SHA256
8ec64bc55e5641d7683288e5e8e27c9391f06eb4da096c3d677d8f25ca4d04df

SHA512
c1ee67bd4c6bcfdc4179f905c7abc4ac632c9265b61dd5fdb90eeeec39802abe2cc487a5c8ded8a0748728104170c1b4d3a88904f102e1c3f891fac7702a2256

Download Submit
memory/1620-0-0x0000000000080000-0x00000000000A5000-memory.dmp

Filesize
148KB

Download
memory/1620-1-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads