njrat | 4c56ade4409add1d78eac3b202a9fbd6afbd71878c31f798026082467ace2628

General

Target

1728-55-0x00000000003C0000-0x00000000003CC000-memory.exe
Size

48KB
MD5

9948b0078db02f20a849748bfe4d1d1c
SHA1

b452876d8daef06dffe35a8767386ae575c0f0d6
SHA256

4c56ade4409add1d78eac3b202a9fbd6afbd71878c31f798026082467ace2628
SHA512

bf1ea220ad74153aaf8379dea78cf322171a23cdd44203bbbfea188a2b31d3a9b16e60541eb2aed8c61e3f76c6fc0b983317b00ca31a01a8b63d082bee42f8d6
SSDEEP

384:MoWSkWHa55BgDVRGipkItzY6vZg36Eh7FpmRvR6JZlbw8hqIusZzZvt:7Juk9pHRpcnu2

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

blog.biliianstore.com:1991

Mutex

76e66b105946ffdfd44b4673a61b0c13

Attributes

reg_key
76e66b105946ffdfd44b4673a61b0c13
splitter
|'|'|

Signatures

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

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
4696	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	1728-55-0x00000000003C0000-0x00000000003CC000-memory.exe

Executes dropped EXE 1 IoCs

pid	Process
100	explorer.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-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\76e66b105946ffdfd44b4673a61b0c13 = "\"C:\\Users\\Admin\\AppData\\Roaming\\explorer.exe\" .."	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\76e66b105946ffdfd44b4673a61b0c13 = "\"C:\\Users\\Admin\\AppData\\Roaming\\explorer.exe\" .."	explorer.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe
Token: 33	100	explorer.exe
Token: SeIncBasePriorityPrivilege	100	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3364 wrote to memory of 100	3364	1728-55-0x00000000003C0000-0x00000000003CC000-memory.exe	89
PID 3364 wrote to memory of 100	3364	1728-55-0x00000000003C0000-0x00000000003CC000-memory.exe	89
PID 3364 wrote to memory of 100	3364	1728-55-0x00000000003C0000-0x00000000003CC000-memory.exe	89
PID 100 wrote to memory of 4696	100	explorer.exe	92
PID 100 wrote to memory of 4696	100	explorer.exe	92
PID 100 wrote to memory of 4696	100	explorer.exe	92

C:\Users\Admin\AppData\Local\Temp\1728-55-0x00000000003C0000-0x00000000003CC000-memory.exe
"C:\Users\Admin\AppData\Local\Temp\1728-55-0x00000000003C0000-0x00000000003CC000-memory.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3364
- C:\Users\Admin\AppData\Roaming\explorer.exe
  "C:\Users\Admin\AppData\Roaming\explorer.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:100
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\explorer.exe" "explorer.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4696

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:\Users\Admin\AppData\Roaming\explorer.exe

Filesize
48KB

MD5
9948b0078db02f20a849748bfe4d1d1c

SHA1
b452876d8daef06dffe35a8767386ae575c0f0d6

SHA256
4c56ade4409add1d78eac3b202a9fbd6afbd71878c31f798026082467ace2628

SHA512
bf1ea220ad74153aaf8379dea78cf322171a23cdd44203bbbfea188a2b31d3a9b16e60541eb2aed8c61e3f76c6fc0b983317b00ca31a01a8b63d082bee42f8d6

Download Submit
C:\Users\Admin\AppData\Roaming\explorer.exe

Filesize
48KB

MD5
9948b0078db02f20a849748bfe4d1d1c

SHA1
b452876d8daef06dffe35a8767386ae575c0f0d6

SHA256
4c56ade4409add1d78eac3b202a9fbd6afbd71878c31f798026082467ace2628

SHA512
bf1ea220ad74153aaf8379dea78cf322171a23cdd44203bbbfea188a2b31d3a9b16e60541eb2aed8c61e3f76c6fc0b983317b00ca31a01a8b63d082bee42f8d6

Download Submit
C:\Users\Admin\AppData\Roaming\explorer.exe

Filesize
48KB

MD5
9948b0078db02f20a849748bfe4d1d1c

SHA1
b452876d8daef06dffe35a8767386ae575c0f0d6

SHA256
4c56ade4409add1d78eac3b202a9fbd6afbd71878c31f798026082467ace2628

SHA512
bf1ea220ad74153aaf8379dea78cf322171a23cdd44203bbbfea188a2b31d3a9b16e60541eb2aed8c61e3f76c6fc0b983317b00ca31a01a8b63d082bee42f8d6

Download Submit
memory/100-143-0x0000000001030000-0x0000000001040000-memory.dmp

Filesize
64KB

Download
memory/100-144-0x0000000001030000-0x0000000001040000-memory.dmp

Filesize
64KB

Download
memory/3364-133-0x0000000000C20000-0x0000000000C30000-memory.dmp

Filesize
64KB

Download

Analysis

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