njrat | c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f

General

Target
c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f.exe
Size 390KB
Sample201111-jf2aslx3sa
SHA256 c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f
MD5 dbf835717fe77ad9585c18ab2256b593
SHA1 764000cabdee4e33ad62be849ed2a807aa4efa22
SHA512 128ef62cbd3a9870e2447c51e3d877a7b6a9d688ccc0a90fd3fae2991d8e0e47afdba50d013277bb5f1cf3e92f9e40d7df8958ddc6190b5ff4f62519daa6b19b
MD5 SHA1 SHA512

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

masterlaith.publicvm.com:5552

Mutex

1c1ca01cd24f4704468e50b601bc2efb

Attributes

reg_key
1c1ca01cd24f4704468e50b601bc2efb
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Executes dropped EXE 2 IoCs

pid	Process
3712	DUCSetup_v4_1_1.exe
3140	host.exe

Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1c1ca01cd24f4704468e50b601bc2efb.exe	host.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1c1ca01cd24f4704468e50b601bc2efb.exe	host.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\1c1ca01cd24f4704468e50b601bc2efb = "\"C:\\ProgramData\\host.exe\" .."	host.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\1c1ca01cd24f4704468e50b601bc2efb = "\"C:\\ProgramData\\host.exe\" .."	host.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

NSIS installer 6 IoCs

installer

resource	yara_rule
behavioral2/files/0x000200000001ab57-9.dat	nsis_installer_1
behavioral2/files/0x000200000001ab57-9.dat	nsis_installer_2
behavioral2/files/0x000200000001ab57-10.dat	nsis_installer_1
behavioral2/files/0x000200000001ab57-10.dat	nsis_installer_2
behavioral2/files/0x000500000001ab58-13.dat	nsis_installer_2
behavioral2/files/0x000500000001ab58-14.dat	nsis_installer_2

Suspicious use of AdjustPrivilegeToken 34 IoCs

description	pid	Process
Token: SeDebugPrivilege	4632	c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f.exe
Token: SeDebugPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe
Token: 33	3140	host.exe
Token: SeIncBasePriorityPrivilege	3140	host.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4632 wrote to memory of 3712	4632	c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f.exe	74
PID 4632 wrote to memory of 3712	4632	c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f.exe	74
PID 4632 wrote to memory of 3712	4632	c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f.exe	74
PID 4632 wrote to memory of 3140	4632	c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f.exe	78
PID 4632 wrote to memory of 3140	4632	c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f.exe	78
PID 4632 wrote to memory of 3140	4632	c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f.exe	78
PID 3140 wrote to memory of 3276	3140	host.exe	79
PID 3140 wrote to memory of 3276	3140	host.exe	79
PID 3140 wrote to memory of 3276	3140	host.exe	79

C:\Users\Admin\AppData\Local\Temp\c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f.exe
"C:\Users\Admin\AppData\Local\Temp\c3f74355307b1e9758a2df3e2579ccb83c260dc4fe03dd4fa1695cbceb867e4f.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4632
- C:\Users\Admin\AppData\Local\Temp\DUCSetup_v4_1_1.exe
  "C:\Users\Admin\AppData\Local\Temp\DUCSetup_v4_1_1.exe"
  2⤵
  - Executes dropped EXE
  PID:3712
- C:\ProgramData\host.exe
  "C:\ProgramData\host.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3140
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\host.exe" "host.exe" ENABLE
    3⤵
    PID:3276

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

Web Service

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

memory/3140-15-0x0000000073D60000-0x000000007444E000-memory.dmp

Download

memory/4632-5-0x0000000004B30000-0x0000000004B31000-memory.dmp

Download

memory/4632-6-0x0000000004970000-0x0000000004971000-memory.dmp

Download

memory/4632-7-0x0000000004C90000-0x0000000004C91000-memory.dmp

Download

memory/4632-0-0x0000000073D60000-0x000000007444E000-memory.dmp

Download

memory/4632-4-0x0000000005030000-0x0000000005031000-memory.dmp

Download

memory/4632-11-0x0000000006900000-0x0000000006906000-memory.dmp

Download

memory/4632-3-0x00000000049F0000-0x00000000049F1000-memory.dmp

Download

memory/4632-1-0x0000000000100000-0x0000000000101000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads