njrat | 063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d

Analysis

max time kernel
153s
max time network
159s
platform
windows10_x64
resource
win10v20210408
submitted
30/08/2021, 06:13

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General

Target
063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe
Size 1009KB
Sample210830-4snfxcbjbx
SHA256 063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d
MD5 3b7e67075780219f65693e397fa721b8
SHA1 6cff74dcac65d345f10565268c95003854062f4a
SHA512 cc5de66f5bab3054068de6e34ca2dff86ee9312036dd3b0d5f370f9821dfefc1c24d15e233000abfbf5da296726b43e14c4845a62428176636aab8bbf1d3f770
MD5 SHA1 SHA512

Score

10^/10

njrat limebot3 trojan

Malware Config

Extracted

Family

njrat

Version

0.7.3

Botnet

Limebot3

microsoftdnsbug.duckdns.org:6699

Mutex

Client.exe

Attributes

reg_key
Client.exe
splitter
luffy

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
3692	AppVCatalog.exe
1860	AppVCatalog.exe
1788	AppVCatalog.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 572 set thread context of 2800	572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe	75
PID 3692 set thread context of 1592	3692	AppVCatalog.exe	82
PID 1860 set thread context of 2548	1860	AppVCatalog.exe	86
PID 1788 set thread context of 660	1788	AppVCatalog.exe	90

autoit_exe 4 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000200000001ab24-123.dat	autoit_exe
behavioral2/files/0x000200000001ab24-124.dat	autoit_exe
behavioral2/files/0x000200000001ab24-134.dat	autoit_exe
behavioral2/files/0x000200000001ab24-145.dat	autoit_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 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1252	schtasks.exe
3836	schtasks.exe
2400	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe
572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe
572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe
572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe
3692	AppVCatalog.exe
3692	AppVCatalog.exe
3692	AppVCatalog.exe
3692	AppVCatalog.exe
1860	AppVCatalog.exe
1860	AppVCatalog.exe
1860	AppVCatalog.exe
1860	AppVCatalog.exe
1788	AppVCatalog.exe
1788	AppVCatalog.exe
1788	AppVCatalog.exe
1788	AppVCatalog.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 572 wrote to memory of 2800	572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe	75
PID 572 wrote to memory of 2800	572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe	75
PID 572 wrote to memory of 2800	572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe	75
PID 572 wrote to memory of 2800	572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe	75
PID 572 wrote to memory of 2800	572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe	75
PID 572 wrote to memory of 1252	572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe	79
PID 572 wrote to memory of 1252	572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe	79
PID 572 wrote to memory of 1252	572	063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe	79
PID 3692 wrote to memory of 1592	3692	AppVCatalog.exe	82
PID 3692 wrote to memory of 1592	3692	AppVCatalog.exe	82
PID 3692 wrote to memory of 1592	3692	AppVCatalog.exe	82
PID 3692 wrote to memory of 1592	3692	AppVCatalog.exe	82
PID 3692 wrote to memory of 1592	3692	AppVCatalog.exe	82
PID 3692 wrote to memory of 3836	3692	AppVCatalog.exe	83
PID 3692 wrote to memory of 3836	3692	AppVCatalog.exe	83
PID 3692 wrote to memory of 3836	3692	AppVCatalog.exe	83
PID 1860 wrote to memory of 2548	1860	AppVCatalog.exe	86
PID 1860 wrote to memory of 2548	1860	AppVCatalog.exe	86
PID 1860 wrote to memory of 2548	1860	AppVCatalog.exe	86
PID 1860 wrote to memory of 2548	1860	AppVCatalog.exe	86
PID 1860 wrote to memory of 2548	1860	AppVCatalog.exe	86
PID 1860 wrote to memory of 2400	1860	AppVCatalog.exe	87
PID 1860 wrote to memory of 2400	1860	AppVCatalog.exe	87
PID 1860 wrote to memory of 2400	1860	AppVCatalog.exe	87
PID 1788 wrote to memory of 660	1788	AppVCatalog.exe	90
PID 1788 wrote to memory of 660	1788	AppVCatalog.exe	90
PID 1788 wrote to memory of 660	1788	AppVCatalog.exe	90
PID 1788 wrote to memory of 660	1788	AppVCatalog.exe	90
PID 1788 wrote to memory of 660	1788	AppVCatalog.exe	90

C:\Users\Admin\AppData\Local\Temp\063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe
"C:\Users\Admin\AppData\Local\Temp\063b9544262ae25393961c4f57a4e4c5a73032644d2a22ff423b8a53bc6c6a7d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:572
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2800
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn PnPUnattend /tr "C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe" /sc minute /mo 1 /F
  2⤵
  - Creates scheduled task(s)
  PID:1252

C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3692
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:1592
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn PnPUnattend /tr "C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe" /sc minute /mo 1 /F
  2⤵
  - Creates scheduled task(s)
  PID:3836

C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1860
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:2548
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn PnPUnattend /tr "C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe" /sc minute /mo 1 /F
  2⤵
  - Creates scheduled task(s)
  PID:2400

C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1788
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:660

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/572-114-0x0000000001120000-0x00000000011DD000-memory.dmp

Download

memory/660-152-0x0000000000C20000-0x0000000000C21000-memory.dmp

Download

memory/660-146-0x00000000003E0000-0x00000000003FA000-memory.dmp

Download

memory/1592-132-0x0000000003070000-0x0000000003071000-memory.dmp

Download

memory/1592-125-0x0000000000400000-0x000000000041A000-memory.dmp

Download

memory/1860-142-0x0000000000E80000-0x0000000000E81000-memory.dmp

Download

memory/2548-143-0x0000000003200000-0x0000000003201000-memory.dmp

Download

memory/2800-121-0x00000000023A0000-0x00000000023A1000-memory.dmp

Download

memory/2800-115-0x0000000000720000-0x000000000073A000-memory.dmp

Download

memory/3692-131-0x0000000000B30000-0x0000000000C7A000-memory.dmp

Download