njrat | 39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2

General

Target

39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2.exe
Size

23KB
MD5

f845dad805a1bf876745e49e51077d2c
SHA1

686740bbda799790ca8bbf1e4f44b26fb7c6ba21
SHA256

39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2
SHA512

5d14ff441d4c9acd2dc2fa78da1764f66d1801d5ecf95ef56820ff63b8966baa4ead74a9059db5e22b0548358800160c97a98a75d497c59a4694a713f02557d0
SSDEEP

384:8weXCQIreJig/8Z7SS1fEBpng6tgL2IBPZVmRvR6JZlbw8hqIusZzZQ6:jLq411eRpcnu4

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

badrya2.no-ip.info:81

Mutex

a1f8805aaeb5c39808433b1aaaed7c3b

Attributes

reg_key
a1f8805aaeb5c39808433b1aaaed7c3b
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1624	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1116	netsh.exe

Loads dropped DLL 1 IoCs

pid	Process
368	39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2.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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\a1f8805aaeb5c39808433b1aaaed7c3b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\a1f8805aaeb5c39808433b1aaaed7c3b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.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 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	1624	server.exe
Token: 33	1624	server.exe
Token: SeIncBasePriorityPrivilege	1624	server.exe
Token: 33	1624	server.exe
Token: SeIncBasePriorityPrivilege	1624	server.exe
Token: 33	1624	server.exe
Token: SeIncBasePriorityPrivilege	1624	server.exe
Token: 33	1624	server.exe
Token: SeIncBasePriorityPrivilege	1624	server.exe
Token: 33	1624	server.exe
Token: SeIncBasePriorityPrivilege	1624	server.exe
Token: 33	1624	server.exe
Token: SeIncBasePriorityPrivilege	1624	server.exe
Token: 33	1624	server.exe
Token: SeIncBasePriorityPrivilege	1624	server.exe
Token: 33	1624	server.exe
Token: SeIncBasePriorityPrivilege	1624	server.exe
Token: 33	1624	server.exe
Token: SeIncBasePriorityPrivilege	1624	server.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 368 wrote to memory of 1624	368	39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2.exe	27
PID 368 wrote to memory of 1624	368	39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2.exe	27
PID 368 wrote to memory of 1624	368	39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2.exe	27
PID 368 wrote to memory of 1624	368	39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2.exe	27
PID 1624 wrote to memory of 1116	1624	server.exe	28
PID 1624 wrote to memory of 1116	1624	server.exe	28
PID 1624 wrote to memory of 1116	1624	server.exe	28
PID 1624 wrote to memory of 1116	1624	server.exe	28

C:\Users\Admin\AppData\Local\Temp\39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2.exe
"C:\Users\Admin\AppData\Local\Temp\39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:368
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1624
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1116

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
23KB

MD5
f845dad805a1bf876745e49e51077d2c

SHA1
686740bbda799790ca8bbf1e4f44b26fb7c6ba21

SHA256
39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2

SHA512
5d14ff441d4c9acd2dc2fa78da1764f66d1801d5ecf95ef56820ff63b8966baa4ead74a9059db5e22b0548358800160c97a98a75d497c59a4694a713f02557d0

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
23KB

MD5
f845dad805a1bf876745e49e51077d2c

SHA1
686740bbda799790ca8bbf1e4f44b26fb7c6ba21

SHA256
39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2

SHA512
5d14ff441d4c9acd2dc2fa78da1764f66d1801d5ecf95ef56820ff63b8966baa4ead74a9059db5e22b0548358800160c97a98a75d497c59a4694a713f02557d0

Download Submit
\Users\Admin\AppData\Local\Temp\server.exe

Filesize
23KB

MD5
f845dad805a1bf876745e49e51077d2c

SHA1
686740bbda799790ca8bbf1e4f44b26fb7c6ba21

SHA256
39ecb4a6712984d03fc6f95c3586422a3c6e95cfa3e4e1d10749bd562d681cb2

SHA512
5d14ff441d4c9acd2dc2fa78da1764f66d1801d5ecf95ef56820ff63b8966baa4ead74a9059db5e22b0548358800160c97a98a75d497c59a4694a713f02557d0

Download Submit
memory/368-54-0x0000000076401000-0x0000000076403000-memory.dmp

Filesize
8KB

Download
memory/368-55-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download
memory/368-61-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download
memory/1624-62-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download
memory/1624-65-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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