njrat | b23fac3382a51f1910438bce97a602ced4b5509fe28f323cde76a60914d83c8d

General

Target

Doc_CompanyPROFILE_Quote30062021.exe
Size

689KB
MD5

d07f6d4d26c2fce6d6fcaedb2c9de1c2
SHA1

1bb5bb489d633cef59cb4d34d627aea811dad7fd
SHA256

b23fac3382a51f1910438bce97a602ced4b5509fe28f323cde76a60914d83c8d
SHA512

da5955dceb2dad9fdede9cc1c59f0ab995f3b5fd74b3a42e9d49019a8fde9948273bc664f616d11f4b232b236a7f2f96f8aeb594ecde682f77ea0375cb675935

Score

10^/10

njrat 2021$$$agilenet evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

2021$$$

C2

194.5.98.210:4040

Mutex

0ef5de3f5b1fb89677ba03e41fa0a05a

Attributes

reg_key
0ef5de3f5b1fb89677ba03e41fa0a05a
splitter
|'|'|

Signatures

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

Processes:

AddInProcess32.exe

pid process

2176 AddInProcess32.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
2176	AddInProcess32.exe

Drops startup file 2 IoCs

Processes:

AddInProcess32.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0ef5de3f5b1fb89677ba03e41fa0a05a.exe	AddInProcess32.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0ef5de3f5b1fb89677ba03e41fa0a05a.exe	AddInProcess32.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
behavioral2/memory/856-121-0x0000000006520000-0x0000000006541000-memory.dmp	agile_net
behavioral2/memory/856-124-0x00000000051F0000-0x00000000056EE000-memory.dmp	agile_net

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

AddInProcess32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\0ef5de3f5b1fb89677ba03e41fa0a05a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\AddInProcess32.exe\" .."	AddInProcess32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\0ef5de3f5b1fb89677ba03e41fa0a05a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\AddInProcess32.exe\" .."	AddInProcess32.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Doc_CompanyPROFILE_Quote30062021.exe

description pid process target process

PID 856 set thread context of 2176 856 Doc_CompanyPROFILE_Quote30062021.exe AddInProcess32.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Doc_CompanyPROFILE_Quote30062021.exe

pid process

856 Doc_CompanyPROFILE_Quote30062021.exe
856 Doc_CompanyPROFILE_Quote30062021.exe

description	pid	process	target process
PID 856 set thread context of 2176	856	Doc_CompanyPROFILE_Quote30062021.exe	AddInProcess32.exe

pid	process
856	Doc_CompanyPROFILE_Quote30062021.exe
856	Doc_CompanyPROFILE_Quote30062021.exe

Suspicious use of AdjustPrivilegeToken 26 IoCs

Processes:

Doc_CompanyPROFILE_Quote30062021.exeAddInProcess32.exe

description	pid	process
Token: SeDebugPrivilege	856	Doc_CompanyPROFILE_Quote30062021.exe
Token: SeDebugPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe
Token: 33	2176	AddInProcess32.exe
Token: SeIncBasePriorityPrivilege	2176	AddInProcess32.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Doc_CompanyPROFILE_Quote30062021.exeAddInProcess32.exe

description	pid	process	target process
PID 856 wrote to memory of 2176	856	Doc_CompanyPROFILE_Quote30062021.exe	AddInProcess32.exe
PID 856 wrote to memory of 2176	856	Doc_CompanyPROFILE_Quote30062021.exe	AddInProcess32.exe
PID 856 wrote to memory of 2176	856	Doc_CompanyPROFILE_Quote30062021.exe	AddInProcess32.exe
PID 856 wrote to memory of 2176	856	Doc_CompanyPROFILE_Quote30062021.exe	AddInProcess32.exe
PID 856 wrote to memory of 2176	856	Doc_CompanyPROFILE_Quote30062021.exe	AddInProcess32.exe
PID 856 wrote to memory of 2176	856	Doc_CompanyPROFILE_Quote30062021.exe	AddInProcess32.exe
PID 856 wrote to memory of 2176	856	Doc_CompanyPROFILE_Quote30062021.exe	AddInProcess32.exe
PID 2176 wrote to memory of 2068	2176	AddInProcess32.exe	netsh.exe
PID 2176 wrote to memory of 2068	2176	AddInProcess32.exe	netsh.exe
PID 2176 wrote to memory of 2068	2176	AddInProcess32.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\Doc_CompanyPROFILE_Quote30062021.exe
"C:\Users\Admin\AppData\Local\Temp\Doc_CompanyPROFILE_Quote30062021.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:856

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
"C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2176

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe" "AddInProcess32.exe" ENABLE
3⤵
PID:2068

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
memory/856-124-0x00000000051F0000-0x00000000056EE000-memory.dmp

Filesize
5.0MB

Download
memory/856-125-0x0000000006A10000-0x0000000006A1B000-memory.dmp

Filesize
44KB

Download
memory/856-119-0x00000000051F0000-0x00000000056EE000-memory.dmp

Filesize
5.0MB

Download
memory/856-121-0x0000000006520000-0x0000000006541000-memory.dmp

Filesize
132KB

Download
memory/856-122-0x00000000065E0000-0x00000000065E1000-memory.dmp

Filesize
4KB

Download
memory/856-123-0x00000000064F0000-0x00000000064F1000-memory.dmp

Filesize
4KB

Download
memory/856-114-0x0000000000680000-0x0000000000681000-memory.dmp

Filesize
4KB

Download
memory/856-118-0x00000000051F0000-0x00000000051F1000-memory.dmp

Filesize
4KB

Download
memory/856-126-0x0000000009100000-0x0000000009101000-memory.dmp

Filesize
4KB

Download
memory/856-116-0x00000000056F0000-0x00000000056F1000-memory.dmp

Filesize
4KB

Download
memory/856-117-0x0000000005140000-0x0000000005141000-memory.dmp

Filesize
4KB

Download
memory/2068-135-0x0000000000000000-mapping.dmp

Download
memory/2176-128-0x000000000040747E-mapping.dmp

Download
memory/2176-127-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2176-137-0x00000000052C0000-0x000000000535C000-memory.dmp

Filesize
624KB

Download
memory/2176-138-0x0000000005540000-0x0000000005541000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads