njrat | f9ae91e6b312fadf8864035e4e737daf845cd41cd4b9e28e83fe9820277ea925

General

Target

f8ed697e63a97f53801c85a47b5350e3.exe
Size

646KB
MD5

f8ed697e63a97f53801c85a47b5350e3
SHA1

a12f21b71c116d3b9669c94e454a532283a85c19
SHA256

f9ae91e6b312fadf8864035e4e737daf845cd41cd4b9e28e83fe9820277ea925
SHA512

2da4243cdb031f0269e9672ced790b017458928a1bc6a37a238f4596152f9e7aa08c5023c6bf5490b7386adb4f441559d42a0a7076da8f16c3672268d18585ba

Score

10^/10

njrat nyan cat evasion trojan

Malware Config

Extracted

Family

njrat

Version

0.7NC

Botnet

NYAN CAT

C2

pedrobedoya2021.duckdns.org:1980

Mutex

cf13c225ff474d45b

Attributes

reg_key
cf13c225ff474d45b
splitter
@!#&^%$

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

f8ed697e63a97f53801c85a47b5350e3.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f8ed697e63a97f53801c85a47b5350e3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f8ed697e63a97f53801c85a47b5350e3.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

f8ed697e63a97f53801c85a47b5350e3.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	f8ed697e63a97f53801c85a47b5350e3.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	f8ed697e63a97f53801c85a47b5350e3.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

f8ed697e63a97f53801c85a47b5350e3.exe

description pid process target process

PID 652 set thread context of 2272 652 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1420 schtasks.exe

description	pid	process	target process
PID 652 set thread context of 2272	652	f8ed697e63a97f53801c85a47b5350e3.exe	RegSvcs.exe

pid	process
1420	schtasks.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

Processes:

f8ed697e63a97f53801c85a47b5350e3.exeRegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	652	f8ed697e63a97f53801c85a47b5350e3.exe
Token: SeDebugPrivilege	2272	RegSvcs.exe
Token: 33	2272	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	2272	RegSvcs.exe
Token: 33	2272	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	2272	RegSvcs.exe
Token: 33	2272	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	2272	RegSvcs.exe
Token: 33	2272	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	2272	RegSvcs.exe
Token: 33	2272	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	2272	RegSvcs.exe
Token: 33	2272	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	2272	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

f8ed697e63a97f53801c85a47b5350e3.exe

description	pid	process	target process
PID 652 wrote to memory of 1420	652	f8ed697e63a97f53801c85a47b5350e3.exe	schtasks.exe
PID 652 wrote to memory of 1420	652	f8ed697e63a97f53801c85a47b5350e3.exe	schtasks.exe
PID 652 wrote to memory of 1420	652	f8ed697e63a97f53801c85a47b5350e3.exe	schtasks.exe
PID 652 wrote to memory of 2272	652	f8ed697e63a97f53801c85a47b5350e3.exe	RegSvcs.exe
PID 652 wrote to memory of 2272	652	f8ed697e63a97f53801c85a47b5350e3.exe	RegSvcs.exe
PID 652 wrote to memory of 2272	652	f8ed697e63a97f53801c85a47b5350e3.exe	RegSvcs.exe
PID 652 wrote to memory of 2272	652	f8ed697e63a97f53801c85a47b5350e3.exe	RegSvcs.exe
PID 652 wrote to memory of 2272	652	f8ed697e63a97f53801c85a47b5350e3.exe	RegSvcs.exe
PID 652 wrote to memory of 2272	652	f8ed697e63a97f53801c85a47b5350e3.exe	RegSvcs.exe
PID 652 wrote to memory of 2272	652	f8ed697e63a97f53801c85a47b5350e3.exe	RegSvcs.exe
PID 652 wrote to memory of 2272	652	f8ed697e63a97f53801c85a47b5350e3.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\f8ed697e63a97f53801c85a47b5350e3.exe
"C:\Users\Admin\AppData\Local\Temp\f8ed697e63a97f53801c85a47b5350e3.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:652

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RbgkAODGyxjzXd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE6E6.tmp"
2⤵
- Creates scheduled task(s)
PID:1420

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2272

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE6E6.tmp
MD5
265126302e1c3a663d2b15f76ba0b5e9

SHA1
5fe58aa610eb59377a94527e56249409a1e95012

SHA256
8676fafe1789c26eef7f6043fc23bbe9ba8971742b619d7c75b463a722bb076d

SHA512
35a435ab28479dd9fcda83dd402064a259bc600d0df9d37de3e1a4eedf9e05c0597669b693c1d25f3fa81b021b97de1c61f741c33da0202059f97b6749333603

Download Submit
memory/652-123-0x0000000004DB0000-0x0000000004DC0000-memory.dmp

Filesize
64KB

Download
memory/652-122-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

Filesize
4KB

Download
memory/652-118-0x000000000A770000-0x000000000A771000-memory.dmp

Filesize
4KB

Download
memory/652-119-0x000000000A310000-0x000000000A311000-memory.dmp

Filesize
4KB

Download
memory/652-124-0x0000000005200000-0x0000000005277000-memory.dmp

Filesize
476KB

Download
memory/652-121-0x000000000A270000-0x000000000A271000-memory.dmp

Filesize
4KB

Download
memory/652-117-0x000000000A1D0000-0x000000000A1D1000-memory.dmp

Filesize
4KB

Download
memory/652-114-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/652-120-0x0000000004820000-0x0000000004821000-memory.dmp

Filesize
4KB

Download
memory/652-125-0x00000000052A0000-0x00000000052D2000-memory.dmp

Filesize
200KB

Download
memory/652-126-0x0000000005350000-0x0000000005351000-memory.dmp

Filesize
4KB

Download
memory/652-116-0x0000000000F70000-0x0000000000FDE000-memory.dmp

Filesize
440KB

Download
memory/1420-127-0x0000000000000000-mapping.dmp

Download
memory/2272-129-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2272-130-0x000000000040677E-mapping.dmp

Download
memory/2272-136-0x0000000005000000-0x00000000054FE000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads