njrat | 3e52e49f1c0ea5cdeb5314f894f481c553b3841eec4c0a2ba8b5aa183affd3fc

General

Target

3e52e49f1c0ea5cdeb5314f894f481c553b3841eec4c0a2ba8b5aa183affd3fc.exe
Size

270KB
MD5

6e9b21506f657614800e3893b2954e80
SHA1

5b41d28b20a29996be71d1776637591c09200c2a
SHA256

3e52e49f1c0ea5cdeb5314f894f481c553b3841eec4c0a2ba8b5aa183affd3fc
SHA512

bffa7110047b6596b6635b92dd6869c0d9e17d39f65281f85507b6ee3fdd9a060b37ef14e1a077719614c3ca042237901cfcb83b6c9a08f2dcca42a7781e37d9
SSDEEP

6144:jDKW1Lgbdl0TBBvjc/J0Lv5Usy19CX/7y2cznP:3h1Lk70TnvjcB0bHy2yRT

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

HacKed

C2

superstart.myq-see.com:1177

Mutex

8bb662d6a258d1485dea4aedcf4aeffe

Attributes

reg_key
8bb662d6a258d1485dea4aedcf4aeffe
splitter
|'|'|

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
3964	552.exe
4084	AppData.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
3740	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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	552.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\8bb662d6a258d1485dea4aedcf4aeffe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\AppData.exe\" .."	AppData.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\8bb662d6a258d1485dea4aedcf4aeffe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\AppData.exe\" .."	AppData.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe
4084	AppData.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4344	3e52e49f1c0ea5cdeb5314f894f481c553b3841eec4c0a2ba8b5aa183affd3fc.exe
Token: SeDebugPrivilege	4084	AppData.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4344 wrote to memory of 3964	4344	3e52e49f1c0ea5cdeb5314f894f481c553b3841eec4c0a2ba8b5aa183affd3fc.exe	88
PID 4344 wrote to memory of 3964	4344	3e52e49f1c0ea5cdeb5314f894f481c553b3841eec4c0a2ba8b5aa183affd3fc.exe	88
PID 4344 wrote to memory of 3964	4344	3e52e49f1c0ea5cdeb5314f894f481c553b3841eec4c0a2ba8b5aa183affd3fc.exe	88
PID 3964 wrote to memory of 4084	3964	552.exe	89
PID 3964 wrote to memory of 4084	3964	552.exe	89
PID 3964 wrote to memory of 4084	3964	552.exe	89
PID 4084 wrote to memory of 3740	4084	AppData.exe	90
PID 4084 wrote to memory of 3740	4084	AppData.exe	90
PID 4084 wrote to memory of 3740	4084	AppData.exe	90

C:\Users\Admin\AppData\Local\Temp\3e52e49f1c0ea5cdeb5314f894f481c553b3841eec4c0a2ba8b5aa183affd3fc.exe
"C:\Users\Admin\AppData\Local\Temp\3e52e49f1c0ea5cdeb5314f894f481c553b3841eec4c0a2ba8b5aa183affd3fc.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4344
- C:\Users\Admin\AppData\Local\Temp\552.exe
  C:\Users\Admin\AppData\Local\Temp\552.exe
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:3964
- - C:\Users\Admin\AppData\Local\Temp\AppData.exe
    "C:\Users\Admin\AppData\Local\Temp\AppData.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4084
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\AppData.exe" "AppData.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      PID:3740

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\Local\Temp\552.exe

Filesize
29KB

MD5
04d514fd111108a2779ce9cf1c309a6c

SHA1
67caefd124d7abd73f4f8bc0c227c1b17f28c06d

SHA256
7aacc883ad4aa7c0c6edf46d64380adf2ec9bfa7f8b6dfe2c0ac2b973bd6873b

SHA512
38b22748e9e19780503584e3e7a6566c30acd259988bc6f5abfb181f81ff6666934c4b0ae54e3a835542e7a0b1becbcb9e632d8c964662a95729238ddf6d8a2f

Download Submit
C:\Users\Admin\AppData\Local\Temp\552.exe

Filesize
29KB

MD5
04d514fd111108a2779ce9cf1c309a6c

SHA1
67caefd124d7abd73f4f8bc0c227c1b17f28c06d

SHA256
7aacc883ad4aa7c0c6edf46d64380adf2ec9bfa7f8b6dfe2c0ac2b973bd6873b

SHA512
38b22748e9e19780503584e3e7a6566c30acd259988bc6f5abfb181f81ff6666934c4b0ae54e3a835542e7a0b1becbcb9e632d8c964662a95729238ddf6d8a2f

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

Filesize
29KB

MD5
04d514fd111108a2779ce9cf1c309a6c

SHA1
67caefd124d7abd73f4f8bc0c227c1b17f28c06d

SHA256
7aacc883ad4aa7c0c6edf46d64380adf2ec9bfa7f8b6dfe2c0ac2b973bd6873b

SHA512
38b22748e9e19780503584e3e7a6566c30acd259988bc6f5abfb181f81ff6666934c4b0ae54e3a835542e7a0b1becbcb9e632d8c964662a95729238ddf6d8a2f

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

Filesize
29KB

MD5
04d514fd111108a2779ce9cf1c309a6c

SHA1
67caefd124d7abd73f4f8bc0c227c1b17f28c06d

SHA256
7aacc883ad4aa7c0c6edf46d64380adf2ec9bfa7f8b6dfe2c0ac2b973bd6873b

SHA512
38b22748e9e19780503584e3e7a6566c30acd259988bc6f5abfb181f81ff6666934c4b0ae54e3a835542e7a0b1becbcb9e632d8c964662a95729238ddf6d8a2f

Download Submit
memory/3964-137-0x00000000723C0000-0x0000000072971000-memory.dmp

Filesize
5.7MB

Download
memory/3964-142-0x00000000723C0000-0x0000000072971000-memory.dmp

Filesize
5.7MB

Download
memory/4084-143-0x00000000723C0000-0x0000000072971000-memory.dmp

Filesize
5.7MB

Download
memory/4084-144-0x00000000723C0000-0x0000000072971000-memory.dmp

Filesize
5.7MB

Download
memory/4344-133-0x00000000007E0000-0x000000000087C000-memory.dmp

Filesize
624KB

Download

Analysis

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