fatalrat | e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1

General

Target

JC_e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1.exe
Size

1.1MB
MD5

6c67d224cc9b69163ee6ebb135cc9f9a
SHA1

aece4bd142d5ad533fac6bf8e0279a93d56b6527
SHA256

e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1
SHA512

343c671b282e4b75a83d2755323c6e7f78b34a5a5bf8607d1ec478102f3a9cf3a945ae321f4aec29be4edd95ba6366556f4358882f4420a821b758f4206959f8
SSDEEP

12288:Xx/etSB4CrDhrsykLlTvxAorztLAGllSZNWWne:sSB4oDKLjG1e

Score

10^/10

fatalrat infostealer 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 4 IoCs

rat infostealer

resource	yara_rule
behavioral1/memory/2156-1-0x0000000010000000-0x000000001002A000-memory.dmp	fatalrat
behavioral1/memory/2156-23-0x0000000000400000-0x0000000000519000-memory.dmp	fatalrat
behavioral1/memory/2128-24-0x0000000000400000-0x0000000000519000-memory.dmp	fatalrat
behavioral1/memory/2724-25-0x0000000000400000-0x0000000000519000-memory.dmp	fatalrat

Executes dropped EXE 2 IoCs

pid	Process
2128	Svwxya.exe
2724	Svwxya.exe

Loads dropped DLL 1 IoCs

pid	Process
2128	Svwxya.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2156-0-0x0000000000400000-0x0000000000519000-memory.dmp	upx
behavioral1/files/0x000e00000001200a-7.dat	upx
behavioral1/files/0x000e00000001200a-13.dat	upx
behavioral1/files/0x000e00000001200a-14.dat	upx
behavioral1/files/0x000e00000001200a-16.dat	upx
behavioral1/memory/2724-17-0x0000000000400000-0x0000000000519000-memory.dmp	upx
behavioral1/memory/2156-23-0x0000000000400000-0x0000000000519000-memory.dmp	upx
behavioral1/memory/2128-24-0x0000000000400000-0x0000000000519000-memory.dmp	upx
behavioral1/memory/2724-25-0x0000000000400000-0x0000000000519000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Svwxya.exe	JC_e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1.exe
File opened for modification	C:\Program Files (x86)\Svwxya.exe	JC_e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1.exe
File opened for modification	C:\Program Files (x86)\Svwxya.exe	Svwxya.exe
File created	C:\Program Files (x86)\Svwxya.exe	Svwxya.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	Svwxya.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	Svwxya.exe

Modifies data under HKEY_USERS 12 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie	Svwxya.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	Svwxya.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Stuvwx Abcdefgh	Svwxya.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM	Svwxya.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet	Svwxya.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services	Svwxya.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	Svwxya.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Stuvwx Abcdefgh\Group = "Fatal"	Svwxya.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Stuvwx Abcdefgh\InstallTime = "2023-09-18 19:02"	Svwxya.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	Svwxya.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft	Svwxya.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7"	Svwxya.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe
2724	Svwxya.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2156	JC_e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1.exe
Token: SeDebugPrivilege	2128	Svwxya.exe
Token: SeDebugPrivilege	2724	Svwxya.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2724	2128	Svwxya.exe	29
PID 2128 wrote to memory of 2724	2128	Svwxya.exe	29
PID 2128 wrote to memory of 2724	2128	Svwxya.exe	29
PID 2128 wrote to memory of 2724	2128	Svwxya.exe	29

C:\Users\Admin\AppData\Local\Temp\JC_e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1.exe
"C:\Users\Admin\AppData\Local\Temp\JC_e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
PID:2156

C:\Program Files (x86)\Svwxya.exe
"C:\Program Files (x86)\Svwxya.exe"
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Program Files (x86)\Svwxya.exe
  "C:\Program Files (x86)\Svwxya.exe" Win7
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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:\Program Files (x86)\Svwxya.exe

Filesize
1.1MB

MD5
6c67d224cc9b69163ee6ebb135cc9f9a

SHA1
aece4bd142d5ad533fac6bf8e0279a93d56b6527

SHA256
e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1

SHA512
343c671b282e4b75a83d2755323c6e7f78b34a5a5bf8607d1ec478102f3a9cf3a945ae321f4aec29be4edd95ba6366556f4358882f4420a821b758f4206959f8

Download Submit
C:\Program Files (x86)\Svwxya.exe

Filesize
1.1MB

MD5
6c67d224cc9b69163ee6ebb135cc9f9a

SHA1
aece4bd142d5ad533fac6bf8e0279a93d56b6527

SHA256
e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1

SHA512
343c671b282e4b75a83d2755323c6e7f78b34a5a5bf8607d1ec478102f3a9cf3a945ae321f4aec29be4edd95ba6366556f4358882f4420a821b758f4206959f8

Download Submit
C:\Program Files (x86)\Svwxya.exe

Filesize
1.1MB

MD5
6c67d224cc9b69163ee6ebb135cc9f9a

SHA1
aece4bd142d5ad533fac6bf8e0279a93d56b6527

SHA256
e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1

SHA512
343c671b282e4b75a83d2755323c6e7f78b34a5a5bf8607d1ec478102f3a9cf3a945ae321f4aec29be4edd95ba6366556f4358882f4420a821b758f4206959f8

Download Submit
\Program Files (x86)\Svwxya.exe

Filesize
1.1MB

MD5
6c67d224cc9b69163ee6ebb135cc9f9a

SHA1
aece4bd142d5ad533fac6bf8e0279a93d56b6527

SHA256
e98cf15289ad0137131d86c506cff333ad1aab013cd50a62489340e100bdb7b1

SHA512
343c671b282e4b75a83d2755323c6e7f78b34a5a5bf8607d1ec478102f3a9cf3a945ae321f4aec29be4edd95ba6366556f4358882f4420a821b758f4206959f8

Download Submit
memory/2128-15-0x00000000026B0000-0x00000000027C9000-memory.dmp

Filesize
1.1MB

Download
memory/2128-24-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download
memory/2156-0-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download
memory/2156-1-0x0000000010000000-0x000000001002A000-memory.dmp

Filesize
168KB

Download
memory/2156-23-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download
memory/2724-17-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download
memory/2724-25-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download

Analysis

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