njrat | 474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9

General

Target

474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9.exe
Size

169KB
MD5

dcf9499899f83e60d57ac9aa5064db63
SHA1

7a9aba94c8c035438fb708abe8b06920871041f3
SHA256

474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9
SHA512

f646b1710dea8dbbce6f355d6752b9c8ba36357589a2e5b3ee6332a151261f13f124e1aa4320461515d5748293c99857f5ec9cf2d8a33e31c285207b5e2fb8bd
SSDEEP

3072:R58LGtClDqkVBz4ZpSABKo+YfoXhRhd1TYo8aAz+jc1/J:HqDqkV5cYABt+Y6DJ/az+jU/

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

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

Processes:

winrar.exe

pid process

2708 winrar.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4400 netsh.exe

pid	process
2708	winrar.exe

pid	process
4400	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9.exe

Drops startup file 2 IoCs

Processes:

winrar.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a00810e7676004207936d369e0551bd1.exe	winrar.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a00810e7676004207936d369e0551bd1.exe	winrar.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

winrar.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a00810e7676004207936d369e0551bd1 = "\"C:\\ProgramData\\winrar.exe\" .."	winrar.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\a00810e7676004207936d369e0551bd1 = "\"C:\\ProgramData\\winrar.exe\" .."	winrar.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 11 IoCs

Processes:

winrar.exe

description	pid	process
Token: SeDebugPrivilege	2708	winrar.exe
Token: 33	2708	winrar.exe
Token: SeIncBasePriorityPrivilege	2708	winrar.exe
Token: 33	2708	winrar.exe
Token: SeIncBasePriorityPrivilege	2708	winrar.exe
Token: 33	2708	winrar.exe
Token: SeIncBasePriorityPrivilege	2708	winrar.exe
Token: 33	2708	winrar.exe
Token: SeIncBasePriorityPrivilege	2708	winrar.exe
Token: 33	2708	winrar.exe
Token: SeIncBasePriorityPrivilege	2708	winrar.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9.exewinrar.exe

description	pid	process	target process
PID 864 wrote to memory of 2708	864	474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9.exe	winrar.exe
PID 864 wrote to memory of 2708	864	474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9.exe	winrar.exe
PID 864 wrote to memory of 2708	864	474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9.exe	winrar.exe
PID 2708 wrote to memory of 4400	2708	winrar.exe	netsh.exe
PID 2708 wrote to memory of 4400	2708	winrar.exe	netsh.exe
PID 2708 wrote to memory of 4400	2708	winrar.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9.exe
"C:\Users\Admin\AppData\Local\Temp\474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:864

C:\ProgramData\winrar.exe
"C:\ProgramData\winrar.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2708

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\ProgramData\winrar.exe" "winrar.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:4400

Network

MITRE ATT&CK Enterprise 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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\winrar.exe
Filesize
169KB

MD5
dcf9499899f83e60d57ac9aa5064db63

SHA1
7a9aba94c8c035438fb708abe8b06920871041f3

SHA256
474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9

SHA512
f646b1710dea8dbbce6f355d6752b9c8ba36357589a2e5b3ee6332a151261f13f124e1aa4320461515d5748293c99857f5ec9cf2d8a33e31c285207b5e2fb8bd

Download Submit
C:\ProgramData\winrar.exe
Filesize
169KB

MD5
dcf9499899f83e60d57ac9aa5064db63

SHA1
7a9aba94c8c035438fb708abe8b06920871041f3

SHA256
474379bf82cdf09ed9e85eff1272c21c99143be48ebd698fca6f7dce3c7276f9

SHA512
f646b1710dea8dbbce6f355d6752b9c8ba36357589a2e5b3ee6332a151261f13f124e1aa4320461515d5748293c99857f5ec9cf2d8a33e31c285207b5e2fb8bd

Download Submit
memory/864-132-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/864-133-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/864-137-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/2708-134-0x0000000000000000-mapping.dmp

Download
memory/2708-138-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/2708-140-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/4400-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads