fatalrat | 61d1d245455ca4edd8e676fc53b3801b0e75d7cd73226947d11b97e18faf880e

Analysis

max time kernel
154s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 11:59

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

tgee.exe
Size

1.9MB
MD5

4ce9155d074716d997e7b806312c509b
SHA1

5fab284c13bda7a68237d4a130cac05a8abc465a
SHA256

61d1d245455ca4edd8e676fc53b3801b0e75d7cd73226947d11b97e18faf880e
SHA512

486fa5fc99eae43f1129755b6949cbc8a0a861df0a71985a5b303038857bbf1f3a7efdf6d466a02b1768e43679a8d8bc2da7b90da7e75051165f554e0795c90f

Score

10^/10

fatalrat infostealer persistence rat suricata upx

Malware Config

Signatures

FatalRat
FatalRat is a modular infostealer family written in C++ first appearing in June 2021.
infostealer rat fatalrat
suricata: ET MALWARE FatalRAT CnC Activity
suricata: ET MALWARE FatalRAT CnC Activity
suricata

Fatal Rat Payload 1 IoCs

rat infostealer

resource	yara_rule
behavioral2/memory/4856-1496-0x0000000001470000-0x000000000148D000-memory.dmp	fatalrat

Executes dropped EXE 2 IoCs

pid	Process
4452	AAscit.exe
4856	ApplicationFrame.exe

Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2944-130-0x0000000010000000-0x00000000100BE000-memory.dmp	upx
behavioral2/memory/2944-132-0x0000000010000000-0x00000000100BE000-memory.dmp	upx
behavioral2/memory/2944-133-0x0000000010000000-0x00000000100BE000-memory.dmp	upx
behavioral2/memory/2944-134-0x0000000010000000-0x00000000100BE000-memory.dmp	upx

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-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	tgee.exe

Loads dropped DLL 3 IoCs

pid	Process
4452	AAscit.exe
4452	AAscit.exe
4856	ApplicationFrame.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\software\WOW6432Node\microsoft\windows\CurrentVersion\Run	AAscit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Éù¿¨Çý¶¯ = "C:\\Users\\Public\\Music\\Misnobi\\teonwu\\AAscit.exe"	AAscit.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Public\\Downloads\\Tencente\\YYDS\\ApplicationFrame.exe"	ApplicationFrame.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\AAscit.exe	AAscit.exe
File created	C:\Windows\SysWOW64\Perl510.dll	AAscit.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4856	ApplicationFrame.exe

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

System Information Discovery
T1082

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	ApplicationFrame.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	ApplicationFrame.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client"	svchost.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000_Classes\Local Settings	tgee.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe
4452	AAscit.exe

Suspicious behavior: LoadsDriver 4 IoCs

pid	Process
656	Process not Found
656	Process not Found
656	Process not Found
656	Process not Found

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2512	svchost.exe
Token: SeCreatePagefilePrivilege	2512	svchost.exe
Token: SeLoadDriverPrivilege	5064	svchost.exe
Token: SeLoadDriverPrivilege	5064	svchost.exe
Token: SeDebugPrivilege	4856	ApplicationFrame.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2944	tgee.exe
2944	tgee.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2944 wrote to memory of 3620	2944	tgee.exe	91
PID 2944 wrote to memory of 3620	2944	tgee.exe	91
PID 2944 wrote to memory of 3620	2944	tgee.exe	91
PID 4452 wrote to memory of 4856	4452	AAscit.exe	93
PID 4452 wrote to memory of 4856	4452	AAscit.exe	93
PID 4452 wrote to memory of 4856	4452	AAscit.exe	93

C:\Users\Admin\AppData\Local\Temp\tgee.exe
"C:\Users\Admin\AppData\Local\Temp\tgee.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\tem.vbs"
  2⤵
  PID:3620

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4352

C:\Users\Public\Music\Misnobi\teonwu\AAscit.exe
"C:\Users\Public\Music\Misnobi\teonwu\AAscit.exe"
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4452
- C:\Users\Public\Downloads\Tencente\YYDS\ApplicationFrame.exe
  C:\Users\Public\Downloads\Tencente\YYDS\ApplicationFrame.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Checks processor information in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:4856

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:5064

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s NetSetupSvc
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2512

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tem.vbs

Filesize
215B

MD5
cb903aef09fea3eca537ad6414bd7113

SHA1
251509cbc25acbc223e2f611eb9ff78eb2a5ae3c

SHA256
5592efb670d7ae50ff9d202464435294442aeebb29baea55acf9cd7c9eb08609

SHA512
de4a1a816d4fb974999ee7958b9a656cb36e3e88cba63eccf5a0009a73912b60b1255d47aed8b96891837470a76211c28f1fc3258fefdd25d8f4308a8b35e6e4

Download Submit
C:\Users\Public\Downloads\Tencente\YYDS\ApplicationFrame.exe

Filesize
44KB

MD5
8b7741a2ae1664d9f1e45c3db481d896

SHA1
e841741c443fab28c4370e1404106c104e0b139b

SHA256
3b79bc26d722162b14619636e96efe06f9586da5fad9d7673555be99bf194e82

SHA512
4ec159948450af0d2deab7bb9f4ea6e83503b1f61d4322c6dbef90f0fb7a101158886712124862c8f52c73eb9928b6028ea01608b7a19269c28bd7b1876ae5cc

Download Submit
C:\Users\Public\Downloads\Tencente\YYDS\ApplicationFrame.exe

Filesize
44KB

MD5
8b7741a2ae1664d9f1e45c3db481d896

SHA1
e841741c443fab28c4370e1404106c104e0b139b

SHA256
3b79bc26d722162b14619636e96efe06f9586da5fad9d7673555be99bf194e82

SHA512
4ec159948450af0d2deab7bb9f4ea6e83503b1f61d4322c6dbef90f0fb7a101158886712124862c8f52c73eb9928b6028ea01608b7a19269c28bd7b1876ae5cc

Download Submit
C:\Users\Public\Downloads\Tencente\YYDS\Perl510.dll

Filesize
924KB

MD5
dbf8b9ab8ae650d5b452240c0e9c90df

SHA1
1215872c6f7306d6ba14133eb706483f04445885

SHA256
9c7feb98fb5804f1f80dd03db1f84a06b68ea6043d2d34ab53edce82b83827b2

SHA512
f9ab16d7946f4dfab4abbe368d6863dbaa1e0c49b6b051ff44eecdf0053ee0d1204272b08ffc925d76335874ca1099ebebc84ba80be3aa9c9bd5e5007a62d3a9

Download Submit
C:\Users\Public\Downloads\Tencente\YYDS\perl510.dll

Filesize
924KB

MD5
dbf8b9ab8ae650d5b452240c0e9c90df

SHA1
1215872c6f7306d6ba14133eb706483f04445885

SHA256
9c7feb98fb5804f1f80dd03db1f84a06b68ea6043d2d34ab53edce82b83827b2

SHA512
f9ab16d7946f4dfab4abbe368d6863dbaa1e0c49b6b051ff44eecdf0053ee0d1204272b08ffc925d76335874ca1099ebebc84ba80be3aa9c9bd5e5007a62d3a9

Download Submit
C:\Users\Public\Music\Misnobi\teonwu\AAscit.exe

Filesize
236KB

MD5
6473a6daccbc8da65d95d7ee7980ac6e

SHA1
85906fd92f4d6b0103f71ae0e4e37c77515b0aea

SHA256
38a8a37d4ff5553ebb5101fd5f0a919e96f909702de4f5d989f3e335ca800eca

SHA512
c53d254c6e8f74404f2f623dd74c0d2e8d2ad6db5e5d23670cec74a90e197e20eb1da0c444dddefccada15eb51a5760ac3736951266c08304d481f533fe2e6db

Download Submit
C:\Users\Public\Music\Misnobi\teonwu\AAscit.exe

Filesize
236KB

MD5
6473a6daccbc8da65d95d7ee7980ac6e

SHA1
85906fd92f4d6b0103f71ae0e4e37c77515b0aea

SHA256
38a8a37d4ff5553ebb5101fd5f0a919e96f909702de4f5d989f3e335ca800eca

SHA512
c53d254c6e8f74404f2f623dd74c0d2e8d2ad6db5e5d23670cec74a90e197e20eb1da0c444dddefccada15eb51a5760ac3736951266c08304d481f533fe2e6db

Download Submit
C:\Users\Public\Music\Misnobi\teonwu\EduCefWarper.dll

Filesize
1.1MB

MD5
55c32cb9a881b49bcc0d1b36868a3e98

SHA1
e0d623b55e5e307540d05a55fadc323d9615d3b2

SHA256
8795836a86dc61f9fe1d4b3f798ebf3a4c1900ddac2f207f4d1f46e87b85850f

SHA512
dba66ec3002d7f08bc17c63b34028775d5d9dde7c0c3cd0778e120aba0a273ed130924954a23fcdbbcac4c10c76c991712895ff971979a9a865632bb659e0414

Download Submit
C:\Users\Public\Music\Misnobi\teonwu\EduCefWarper.dll

Filesize
1.1MB

MD5
55c32cb9a881b49bcc0d1b36868a3e98

SHA1
e0d623b55e5e307540d05a55fadc323d9615d3b2

SHA256
8795836a86dc61f9fe1d4b3f798ebf3a4c1900ddac2f207f4d1f46e87b85850f

SHA512
dba66ec3002d7f08bc17c63b34028775d5d9dde7c0c3cd0778e120aba0a273ed130924954a23fcdbbcac4c10c76c991712895ff971979a9a865632bb659e0414

Download Submit
C:\Users\Public\Music\Misnobi\teonwu\VCRUNTIME140.dll

Filesize
78KB

MD5
0a79b529eb9012f65ac4500a7a915ca9

SHA1
bdc89773fbfed2edd18371786997d6c57672b096

SHA256
e985d4d2da1711289b0a67a2dab4002ef2cda5ec7e27f576b0e026fa6ef224a3

SHA512
d80c140566014a556f0da2ca6bf9e0d549670a9fdcb5a5f5d7340cd4733724b116d2335d16e9a4d126c5eee7ccb059f84bcaf0b12379c9abd4a018d4b42fdcdd

Download Submit
C:\Users\Public\Music\Misnobi\teonwu\vcruntime140.dll

Filesize
78KB

MD5
0a79b529eb9012f65ac4500a7a915ca9

SHA1
bdc89773fbfed2edd18371786997d6c57672b096

SHA256
e985d4d2da1711289b0a67a2dab4002ef2cda5ec7e27f576b0e026fa6ef224a3

SHA512
d80c140566014a556f0da2ca6bf9e0d549670a9fdcb5a5f5d7340cd4733724b116d2335d16e9a4d126c5eee7ccb059f84bcaf0b12379c9abd4a018d4b42fdcdd

Download Submit
memory/2944-132-0x0000000010000000-0x00000000100BE000-memory.dmp

Filesize
760KB

Download
memory/2944-130-0x0000000010000000-0x00000000100BE000-memory.dmp

Filesize
760KB

Download
memory/2944-134-0x0000000010000000-0x00000000100BE000-memory.dmp

Filesize
760KB

Download
memory/2944-133-0x0000000010000000-0x00000000100BE000-memory.dmp

Filesize
760KB

Download
memory/4856-148-0x0000000077210000-0x00000000773B3000-memory.dmp

Filesize
1.6MB

Download
memory/4856-149-0x0000000076DA0000-0x0000000076FB5000-memory.dmp

Filesize
2.1MB

Download
memory/4856-151-0x00000000763F0000-0x0000000076590000-memory.dmp

Filesize
1.6MB

Download
memory/4856-152-0x0000000075F10000-0x0000000075F8A000-memory.dmp

Filesize
488KB

Download
memory/4856-1496-0x0000000001470000-0x000000000148D000-memory.dmp

Filesize
116KB

Download