fatalrat | e8c0a00f7230e5bc8f1b56204ed6e9618411f9294f082e6a184f20d6d3c5b66b

General

Target

d2c1eeaa94359fa6755d648652144d50.exe
Size

92KB
MD5

d2c1eeaa94359fa6755d648652144d50
SHA1

b145b3e25eb5f0e390858208c4a4e20763c32377
SHA256

e8c0a00f7230e5bc8f1b56204ed6e9618411f9294f082e6a184f20d6d3c5b66b
SHA512

bd048edaaf937fe9dac757e496bf4b855e8906cc465ee49ad1c8018d951af7369b5814633374ca9be6e6848d36c2cd9a6fd55bfb839fa0864562acc604cb43c2
SSDEEP

1536:uSdoOrkNrU6Ul4cl7S082EBO05Pa3qSxMM07TcSAetXxXJXXEtCUetvy+YG3L1Yc:uSOGkNtcle03EBPavATccthXJi9+YKSV

Score

10^/10

fatalrat infostealer persistence rat upx

Malware Config

Signatures

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

Fatal Rat payload 3 IoCs

rat infostealer

resource	yara_rule
behavioral1/memory/972-55-0x0000000000400000-0x0000000000433000-memory.dmp	fatalrat
behavioral1/memory/972-56-0x0000000010000000-0x000000001002A000-memory.dmp	fatalrat
behavioral1/memory/1492-69-0x0000000000400000-0x0000000000433000-memory.dmp	fatalrat

Executes dropped EXE 1 IoCs

pid	Process
1492	d2c1eeaa94359fa6755d648652144d50.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/972-55-0x0000000000400000-0x0000000000433000-memory.dmp	upx
behavioral1/files/0x000b0000000122f6-59.dat	upx
behavioral1/files/0x000b0000000122f6-60.dat	upx
behavioral1/files/0x000b0000000122f6-62.dat	upx
behavioral1/memory/1492-69-0x0000000000400000-0x0000000000433000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
972	d2c1eeaa94359fa6755d648652144d50.exe
972	d2c1eeaa94359fa6755d648652144d50.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run	d2c1eeaa94359fa6755d648652144d50.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\SVP7 = "C:\\Users\\Admin\\AppData\\Local\\d2c1eeaa94359fa6755d648652144d50.exe"	d2c1eeaa94359fa6755d648652144d50.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1492	d2c1eeaa94359fa6755d648652144d50.exe
1492	d2c1eeaa94359fa6755d648652144d50.exe
1492	d2c1eeaa94359fa6755d648652144d50.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	972	d2c1eeaa94359fa6755d648652144d50.exe
Token: SeDebugPrivilege	1492	d2c1eeaa94359fa6755d648652144d50.exe
Token: SeDebugPrivilege	1492	d2c1eeaa94359fa6755d648652144d50.exe
Token: SeDebugPrivilege	1492	d2c1eeaa94359fa6755d648652144d50.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 972 wrote to memory of 1492	972	d2c1eeaa94359fa6755d648652144d50.exe	28
PID 972 wrote to memory of 1492	972	d2c1eeaa94359fa6755d648652144d50.exe	28
PID 972 wrote to memory of 1492	972	d2c1eeaa94359fa6755d648652144d50.exe	28
PID 972 wrote to memory of 1492	972	d2c1eeaa94359fa6755d648652144d50.exe	28
PID 1492 wrote to memory of 1156	1492	d2c1eeaa94359fa6755d648652144d50.exe	29
PID 1492 wrote to memory of 1156	1492	d2c1eeaa94359fa6755d648652144d50.exe	29
PID 1492 wrote to memory of 1156	1492	d2c1eeaa94359fa6755d648652144d50.exe	29
PID 1492 wrote to memory of 1156	1492	d2c1eeaa94359fa6755d648652144d50.exe	29
PID 1492 wrote to memory of 1156	1492	d2c1eeaa94359fa6755d648652144d50.exe	29
PID 1492 wrote to memory of 1156	1492	d2c1eeaa94359fa6755d648652144d50.exe	29

C:\Users\Admin\AppData\Local\Temp\d2c1eeaa94359fa6755d648652144d50.exe
"C:\Users\Admin\AppData\Local\Temp\d2c1eeaa94359fa6755d648652144d50.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:972
- C:\Users\Admin\AppData\Local\d2c1eeaa94359fa6755d648652144d50.exe
  "C:\Users\Admin\AppData\Local\d2c1eeaa94359fa6755d648652144d50.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1492
- - C:\Windows\SysWOW64\notepad.exe
    notepad.exe
    3⤵
    PID:1156

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\d2c1eeaa94359fa6755d648652144d50.exe

Filesize
92KB

MD5
d2c1eeaa94359fa6755d648652144d50

SHA1
b145b3e25eb5f0e390858208c4a4e20763c32377

SHA256
e8c0a00f7230e5bc8f1b56204ed6e9618411f9294f082e6a184f20d6d3c5b66b

SHA512
bd048edaaf937fe9dac757e496bf4b855e8906cc465ee49ad1c8018d951af7369b5814633374ca9be6e6848d36c2cd9a6fd55bfb839fa0864562acc604cb43c2

Download Submit
\Users\Admin\AppData\Local\d2c1eeaa94359fa6755d648652144d50.exe

Filesize
92KB

MD5
d2c1eeaa94359fa6755d648652144d50

SHA1
b145b3e25eb5f0e390858208c4a4e20763c32377

SHA256
e8c0a00f7230e5bc8f1b56204ed6e9618411f9294f082e6a184f20d6d3c5b66b

SHA512
bd048edaaf937fe9dac757e496bf4b855e8906cc465ee49ad1c8018d951af7369b5814633374ca9be6e6848d36c2cd9a6fd55bfb839fa0864562acc604cb43c2

Download Submit
\Users\Admin\AppData\Local\d2c1eeaa94359fa6755d648652144d50.exe

Filesize
92KB

MD5
d2c1eeaa94359fa6755d648652144d50

SHA1
b145b3e25eb5f0e390858208c4a4e20763c32377

SHA256
e8c0a00f7230e5bc8f1b56204ed6e9618411f9294f082e6a184f20d6d3c5b66b

SHA512
bd048edaaf937fe9dac757e496bf4b855e8906cc465ee49ad1c8018d951af7369b5814633374ca9be6e6848d36c2cd9a6fd55bfb839fa0864562acc604cb43c2

Download Submit
memory/972-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/972-55-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/972-56-0x0000000010000000-0x000000001002A000-memory.dmp

Filesize
168KB

Download
memory/1492-69-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download

Analysis

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