njrat | c2bea2d868e82aacc04296992cd63a14383592c225b868eaf0609299557c55a2

General

Target

PBHACK.exe
Size

1.3MB
MD5

a5ed586c6aa4674092bb6bd521affddd
SHA1

cd0034fafdcab582fa4b12ff2c5bbdceeca62533
SHA256

c2bea2d868e82aacc04296992cd63a14383592c225b868eaf0609299557c55a2
SHA512

f1b54ed8f3031dd36c01bd16580f673f004c9f68c8749e5c20b12b2cf65e780140aeddbe2a2d20f6ca787759bf3563a3cbe2d37f02937dbc46ab2615932d8a24

Score

10^/10

njrat pbhack agilenet evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

PBHACK

C2

zetsubranco.duckdns.org:1177

Mutex

043f16f4cc1323e18d4d845c634e9302

Attributes

reg_key
043f16f4cc1323e18d4d845c634e9302
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 1 IoCs

Processes:

System.exe

pid process

3656 System.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
3656	System.exe

Drops startup file 2 IoCs

Processes:

System.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\043f16f4cc1323e18d4d845c634e9302.exe	System.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\043f16f4cc1323e18d4d845c634e9302.exe	System.exe

Obfuscated with Agile.Net obfuscator 2 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

Processes:

resource	yara_rule
C:\Users\Admin\System.exe	agile_net
C:\Users\Admin\System.exe	agile_net

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

System.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\043f16f4cc1323e18d4d845c634e9302 = "\"C:\\Users\\Admin\\System.exe\" .."	System.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\043f16f4cc1323e18d4d845c634e9302 = "\"C:\\Users\\Admin\\System.exe\" .."	System.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 33 IoCs

Processes:

System.exe

description	pid	process
Token: SeDebugPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe
Token: 33	3656	System.exe
Token: SeIncBasePriorityPrivilege	3656	System.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

PBHACK.exeSystem.exe

description	pid	process	target process
PID 3716 wrote to memory of 3656	3716	PBHACK.exe	System.exe
PID 3716 wrote to memory of 3656	3716	PBHACK.exe	System.exe
PID 3716 wrote to memory of 3656	3716	PBHACK.exe	System.exe
PID 3656 wrote to memory of 928	3656	System.exe	netsh.exe
PID 3656 wrote to memory of 928	3656	System.exe	netsh.exe
PID 3656 wrote to memory of 928	3656	System.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\PBHACK.exe
"C:\Users\Admin\AppData\Local\Temp\PBHACK.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3716

C:\Users\Admin\System.exe
"C:\Users\Admin\System.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3656

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\System.exe" "System.exe" ENABLE
3⤵
PID:928

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

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

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\System.exe
MD5
a5ed586c6aa4674092bb6bd521affddd

SHA1
cd0034fafdcab582fa4b12ff2c5bbdceeca62533

SHA256
c2bea2d868e82aacc04296992cd63a14383592c225b868eaf0609299557c55a2

SHA512
f1b54ed8f3031dd36c01bd16580f673f004c9f68c8749e5c20b12b2cf65e780140aeddbe2a2d20f6ca787759bf3563a3cbe2d37f02937dbc46ab2615932d8a24

Download Submit
C:\Users\Admin\System.exe
MD5
a5ed586c6aa4674092bb6bd521affddd

SHA1
cd0034fafdcab582fa4b12ff2c5bbdceeca62533

SHA256
c2bea2d868e82aacc04296992cd63a14383592c225b868eaf0609299557c55a2

SHA512
f1b54ed8f3031dd36c01bd16580f673f004c9f68c8749e5c20b12b2cf65e780140aeddbe2a2d20f6ca787759bf3563a3cbe2d37f02937dbc46ab2615932d8a24

Download Submit
memory/928-131-0x0000000000000000-mapping.dmp

Download
memory/3656-121-0x0000000000000000-mapping.dmp

Download
memory/3656-130-0x0000000005760000-0x0000000005761000-memory.dmp

Filesize
4KB

Download
memory/3656-132-0x0000000005930000-0x0000000005931000-memory.dmp

Filesize
4KB

Download
memory/3716-114-0x00000000005D0000-0x00000000005D1000-memory.dmp

Filesize
4KB

Download
memory/3716-116-0x0000000005040000-0x0000000005041000-memory.dmp

Filesize
4KB

Download
memory/3716-117-0x00000000052B0000-0x00000000052B1000-memory.dmp

Filesize
4KB

Download
memory/3716-118-0x00000000057C0000-0x00000000057C1000-memory.dmp

Filesize
4KB

Download
memory/3716-119-0x0000000005360000-0x0000000005361000-memory.dmp

Filesize
4KB

Download
memory/3716-120-0x0000000005030000-0x0000000005036000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads