fatalrat | 977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95

General

Target

977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Size

2.3MB
MD5

03ba96beafa71789414d0c9ed40c41ad
SHA1

4e6826256eb92f7b9b106e31b9c1619559d535fa
SHA256

977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95
SHA512

7e1ffeb5df7d30e1f70dac8d3aaf6ec9e89bc45af459c8272bf3ed37bb2a91e10664a2d13a0126fc3a95defc5323cdd5ed9080908be91c6d25806ef26651d82d
SSDEEP

49152:/zwkuPNZCkLOVtOk5qwqDJg3yw/JhBnLtxhA6v/e33g:8TrLObO9QxpvA6vv

Score

10^/10

fatalrat discovery evasion infostealer rat themida trojan

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/2372-3-0x0000000010000000-0x000000001002A000-memory.dmp	fatalrat
behavioral1/memory/2372-19-0x0000000000400000-0x0000000000A15000-memory.dmp	fatalrat
behavioral1/memory/2832-22-0x0000000010000000-0x000000001002A000-memory.dmp	fatalrat
behavioral1/memory/2832-27-0x0000000000400000-0x0000000000A15000-memory.dmp	fatalrat

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Executes dropped EXE 1 IoCs

pid	Process
2832	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Loads dropped DLL 2 IoCs

pid	Process
2372	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
2372	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2372-0-0x0000000000400000-0x0000000000A15000-memory.dmp	themida
behavioral1/memory/2372-2-0x0000000000400000-0x0000000000A15000-memory.dmp	themida
behavioral1/files/0x0005000000010300-11.dat	themida
behavioral1/memory/2832-20-0x0000000000400000-0x0000000000A15000-memory.dmp	themida
behavioral1/memory/2372-19-0x0000000000400000-0x0000000000A15000-memory.dmp	themida
behavioral1/memory/2832-21-0x0000000000400000-0x0000000000A15000-memory.dmp	themida
behavioral1/memory/2832-27-0x0000000000400000-0x0000000000A15000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2372	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
2832	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2372	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Token: SeDebugPrivilege	2832	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 2832	2372	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe	30
PID 2372 wrote to memory of 2832	2372	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe	30
PID 2372 wrote to memory of 2832	2372	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe	30
PID 2372 wrote to memory of 2832	2372	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe	30

C:\Users\Admin\AppData\Local\Temp\977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
"C:\Users\Admin\AppData\Local\Temp\977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Users\Admin\AppData\Local\977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
  "C:\Users\Admin\AppData\Local\977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2832

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Filesize
2.3MB

MD5
03ba96beafa71789414d0c9ed40c41ad

SHA1
4e6826256eb92f7b9b106e31b9c1619559d535fa

SHA256
977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95

SHA512
7e1ffeb5df7d30e1f70dac8d3aaf6ec9e89bc45af459c8272bf3ed37bb2a91e10664a2d13a0126fc3a95defc5323cdd5ed9080908be91c6d25806ef26651d82d

Download Submit
memory/2372-0-0x0000000000400000-0x0000000000A15000-memory.dmp

Filesize
6.1MB

Download
memory/2372-1-0x0000000077C50000-0x0000000077C52000-memory.dmp

Filesize
8KB

Download
memory/2372-2-0x0000000000400000-0x0000000000A15000-memory.dmp

Filesize
6.1MB

Download
memory/2372-3-0x0000000010000000-0x000000001002A000-memory.dmp

Filesize
168KB

Download
memory/2372-19-0x0000000000400000-0x0000000000A15000-memory.dmp

Filesize
6.1MB

Download
memory/2832-20-0x0000000000400000-0x0000000000A15000-memory.dmp

Filesize
6.1MB

Download
memory/2832-22-0x0000000010000000-0x000000001002A000-memory.dmp

Filesize
168KB

Download
memory/2832-21-0x0000000000400000-0x0000000000A15000-memory.dmp

Filesize
6.1MB

Download
memory/2832-27-0x0000000000400000-0x0000000000A15000-memory.dmp

Filesize
6.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads